pcie: minor cleanups for slot control/status
[qemu.git] / include / hw / pci / shpc.h
1 #ifndef SHPC_H
2 #define SHPC_H
3
4 #include "exec/memory.h"
5 #include "hw/hotplug.h"
6 #include "hw/pci/pci.h"
7
8 struct SHPCDevice {
9 /* Capability offset in device's config space */
10 int cap;
11
12 /* # of hot-pluggable slots */
13 int nslots;
14
15 /* SHPC WRS: working register set */
16 uint8_t *config;
17
18 /* Used to enable checks on load. Note that writable bits are
19 * never checked even if set in cmask. */
20 uint8_t *cmask;
21
22 /* Used to implement R/W bytes */
23 uint8_t *wmask;
24
25 /* Used to implement RW1C(Write 1 to Clear) bytes */
26 uint8_t *w1cmask;
27
28 /* MMIO for the SHPC BAR */
29 MemoryRegion mmio;
30
31 /* Bus controlled by this SHPC */
32 PCIBus *sec_bus;
33
34 /* MSI already requested for this event */
35 int msi_requested;
36 };
37
38 void shpc_reset(PCIDevice *d);
39 int shpc_bar_size(PCIDevice *dev);
40 int shpc_init(PCIDevice *dev, PCIBus *sec_bus, MemoryRegion *bar,
41 unsigned off, Error **errp);
42 void shpc_cleanup(PCIDevice *dev, MemoryRegion *bar);
43 void shpc_free(PCIDevice *dev);
44 void shpc_cap_write_config(PCIDevice *d, uint32_t addr, uint32_t val, int len);
45
46
47 void shpc_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
48 Error **errp);
49 void shpc_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
50 Error **errp);
51 void shpc_device_unplug_request_cb(HotplugHandler *hotplug_dev,
52 DeviceState *dev, Error **errp);
53
54 extern VMStateInfo shpc_vmstate_info;
55 #define SHPC_VMSTATE(_field, _type, _test) \
56 VMSTATE_BUFFER_UNSAFE_INFO_TEST(_field, _type, _test, 0, \
57 shpc_vmstate_info, 0)
58
59 static inline bool shpc_present(const PCIDevice *dev)
60 {
61 return dev->cap_present & QEMU_PCI_CAP_SHPC;
62 }
63
64 #endif