diff options
| author | Ian Moffett <ian@osmora.org> | 2024-04-18 15:06:22 -0400 |
|---|---|---|
| committer | Ian Moffett <ian@osmora.org> | 2024-04-18 15:06:22 -0400 |
| commit | 0e24592cb32f61bb59caad30ea9acc524974c6dd (patch) | |
| tree | f229e71727d51d0a21bf9da0e7111c2376f745a7 /sys/include | |
| parent | 691302ee1f22a5458c4dab3d5f85cc3de9332bb5 (diff) | |
kernel: vm: Add device pager
Signed-off-by: Ian Moffett <ian@osmora.org>
Diffstat (limited to 'sys/include')
| -rw-r--r-- | sys/include/sys/device.h | 2 | ||||
| -rw-r--r-- | sys/include/vm/pager.h | 4 |
2 files changed, 6 insertions, 0 deletions
diff --git a/sys/include/sys/device.h b/sys/include/sys/device.h index 7b2f297..8695ab6 100644 --- a/sys/include/sys/device.h +++ b/sys/include/sys/device.h @@ -32,6 +32,7 @@ #include <sys/sio.h> #include <sys/queue.h> +#include <sys/types.h> #include <vm/dynalloc.h> #define DEVICE_ALLOC() dynalloc(sizeof(struct device)) @@ -41,6 +42,7 @@ struct device { size_t blocksize; int(*write)(struct device *dev, struct sio_txn *sio); int(*read)(struct device *dev, struct sio_txn *sio); + paddr_t(*mmap)(struct device *dev, off_t off, vm_prot_t prot); TAILQ_ENTRY(device) link; }; diff --git a/sys/include/vm/pager.h b/sys/include/vm/pager.h index 5f36bfc..e57afe1 100644 --- a/sys/include/vm/pager.h +++ b/sys/include/vm/pager.h @@ -38,10 +38,14 @@ struct vm_object; struct vm_pagerops { int(*get)(struct vm_object *obj, off_t off, size_t len, struct vm_page *pg); int(*store)(struct vm_object *obj, off_t off, size_t len, struct vm_page *pg); + /* TODO: Remove this and add demand paging */ + int(*get_paddr)(struct vm_object *obj, paddr_t *paddr, vm_prot_t prot); }; extern struct vm_pagerops g_vnode_pagerops; +extern struct vm_pagerops g_dev_pagerops; int vm_pager_get(struct vm_object *obj, off_t off, size_t len, struct vm_page *pg); +int vm_pager_paddr(struct vm_object *obj, paddr_t *paddr, vm_prot_t prot); #endif /* !_VM_PAGER_H_ */ |