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