mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-24 20:19:44 +00:00
81a322d4a1
Sorry folks, but it has to be. One more of these invasive qdev patches. We have a serious design bug in the qdev interface: device init callbacks can't signal failure because the init() callback has no return value. This patch fixes it. We have already one case in-tree where this is needed: Try -device virtio-blk-pci (without drive= specified) and watch qemu segfault. This patch fixes it. With usb+scsi being converted to qdev we'll get more devices where the init callback can fail for various reasons. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
46 lines
1.2 KiB
C
46 lines
1.2 KiB
C
/* QEMU Synchronous Serial Interface support. */
|
|
|
|
/* In principle SSI is a point-point interface. As such the qemu
|
|
implementation has a single slave device on a "bus".
|
|
However it is fairly common for boards to have multiple slaves
|
|
connected to a single master, and select devices with an external
|
|
chip select. This is implemented in qemu by having an explicit mux device.
|
|
It is assumed that master and slave are both using the same transfer width.
|
|
*/
|
|
|
|
#ifndef QEMU_SSI_H
|
|
#define QEMU_SSI_H
|
|
|
|
#include "qdev.h"
|
|
|
|
typedef struct SSISlave SSISlave;
|
|
|
|
/* Slave devices. */
|
|
typedef struct {
|
|
DeviceInfo qdev;
|
|
int (*init)(SSISlave *dev);
|
|
uint32_t (*transfer)(SSISlave *dev, uint32_t val);
|
|
} SSISlaveInfo;
|
|
|
|
struct SSISlave {
|
|
DeviceState qdev;
|
|
SSISlaveInfo *info;
|
|
};
|
|
|
|
#define SSI_SLAVE_FROM_QDEV(dev) DO_UPCAST(SSISlave, qdev, dev)
|
|
#define FROM_SSI_SLAVE(type, dev) DO_UPCAST(type, ssidev, dev)
|
|
|
|
void ssi_register_slave(SSISlaveInfo *info);
|
|
|
|
DeviceState *ssi_create_slave(SSIBus *bus, const char *name);
|
|
|
|
/* Master interface. */
|
|
SSIBus *ssi_create_bus(DeviceState *parent, const char *name);
|
|
|
|
uint32_t ssi_transfer(SSIBus *bus, uint32_t val);
|
|
|
|
/* max111x.c */
|
|
void max111x_set_input(DeviceState *dev, int line, uint8_t value);
|
|
|
|
#endif
|