diff options
Diffstat (limited to 'vbox.h')
| -rw-r--r-- | vbox.h | 15 |
1 files changed, 9 insertions, 6 deletions
@@ -31,14 +31,17 @@ #include "utils.h" #include "vboxdev.h" -/** Size of the VBox buffer. The maximum message length that may be sent. */ -// Enough to fit a set_pointer_shape message with a 16x16 cursor -#define VBOX_BUFFER_SIZE (1024 + 32 + 24 + 20) - +/** Struct containing all the information required to send a VirtualBox message. */ typedef struct vboxcomm { + /** The IO port of the VirtualBox pci device, found by vbox_init_device(). */ uint16_t iobase; - char buf[VBOX_BUFFER_SIZE]; + /** Whether we are using VDS or not. */ + bool vds; + /** The VDS (Virtual DMA service) descriptor corresponding to the buffer that we will use. + * Initialized by vbox_init_buffer(), even if we don't use VDS. */ VDSDDS dds; + /** We assume the actual buffer comes in memory after this struct. */ + char buf[]; } vboxcomm_t; typedef vboxcomm_t * PVBOXCOMM; typedef vboxcomm_t __far * LPVBOXCOMM; @@ -65,7 +68,7 @@ extern int vbox_init_device(LPVBOXCOMM vb); /** Prepares the buffer used for communicating with VBox and * computes its physical address (using VDS if necessary). */ -extern int vbox_init_buffer(LPVBOXCOMM vb); +extern int vbox_init_buffer(LPVBOXCOMM vb, unsigned size); /** Releases/unlocks buffer, no further use possible. */ extern int vbox_release_buffer(LPVBOXCOMM vb); |