include/hw/ppc/spapr_vio.h

   1 #ifndef HW_SPAPR_VIO_H
   2 #define HW_SPAPR_VIO_H
   3
   4 /*
   5  * QEMU sPAPR VIO bus definitions
   6  *
   7  * Copyright (c) 2010 David Gibson, IBM Corporation <david@gibson.dropbear.id.au>
   8  * Based on the s390 virtio bus definitions:
   9  * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  23  */
  24
  25 #include "hw/ppc/spapr.h"
  26 #include "sysemu/dma.h"
  27
  28 #define TYPE_VIO_SPAPR_DEVICE "vio-spapr-device"
  29 #define VIO_SPAPR_DEVICE(obj) \
  30      OBJECT_CHECK(SpaprVioDevice, (obj), TYPE_VIO_SPAPR_DEVICE)
  31 #define VIO_SPAPR_DEVICE_CLASS(klass) \
  32      OBJECT_CLASS_CHECK(SpaprVioDeviceClass, (klass), TYPE_VIO_SPAPR_DEVICE)
  33 #define VIO_SPAPR_DEVICE_GET_CLASS(obj) \
  34      OBJECT_GET_CLASS(SpaprVioDeviceClass, (obj), TYPE_VIO_SPAPR_DEVICE)
  35
  36 #define TYPE_SPAPR_VIO_BUS "spapr-vio-bus"
  37 #define SPAPR_VIO_BUS(obj) OBJECT_CHECK(SpaprVioBus, (obj), TYPE_SPAPR_VIO_BUS)
  38
  39 #define TYPE_SPAPR_VIO_BRIDGE "spapr-vio-bridge"
  40
  41 typedef struct SpaprVioCrq {
  42     uint64_t qladdr;
  43     uint32_t qsize;
  44     uint32_t qnext;
  45     int(*SendFunc)(struct SpaprVioDevice *vdev, uint8_t *crq);
  46 } SpaprVioCrq;
  47
  48 typedef struct SpaprVioDevice SpaprVioDevice;
  49 typedef struct SpaprVioBus SpaprVioBus;
  50
  51 typedef struct SpaprVioDeviceClass {
  52     DeviceClass parent_class;
  53
  54     const char *dt_name, *dt_type, *dt_compatible;
  55     target_ulong signal_mask;
  56     uint32_t rtce_window_size;
  57     void (*realize)(SpaprVioDevice *dev, Error **errp);
  58     void (*reset)(SpaprVioDevice *dev);
  59     int (*devnode)(SpaprVioDevice *dev, void *fdt, int node_off);
  60 } SpaprVioDeviceClass;
  61
  62 struct SpaprVioDevice {
  63     DeviceState qdev;
  64     uint32_t reg;
  65     uint32_t irq;
  66     uint64_t signal_state;
  67     SpaprVioCrq crq;
  68     AddressSpace as;
  69     MemoryRegion mrroot;
  70     MemoryRegion mrbypass;
  71     SpaprTceTable *tcet;
  72 };
  73
  74 #define DEFINE_SPAPR_PROPERTIES(type, field)           \
  75         DEFINE_PROP_UINT32("reg", type, field.reg, -1)
  76
  77 struct SpaprVioBus {
  78     BusState bus;
  79     uint32_t next_reg;
  80 };
  81
  82 extern SpaprVioBus *spapr_vio_bus_init(void);
  83 extern SpaprVioDevice *spapr_vio_find_by_reg(SpaprVioBus *bus, uint32_t reg);
  84 void spapr_dt_vdevice(SpaprVioBus *bus, void *fdt);
  85 extern gchar *spapr_vio_stdout_path(SpaprVioBus *bus);
  86
  87 static inline qemu_irq spapr_vio_qirq(SpaprVioDevice *dev)
  88 {
  89     SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
  90
  91     return spapr_qirq(spapr, dev->irq);
  92 }
  93
  94 static inline bool spapr_vio_dma_valid(SpaprVioDevice *dev, uint64_t taddr,
  95                                        uint32_t size, DMADirection dir)
  96 {
  97     return dma_memory_valid(&dev->as, taddr, size, dir);
  98 }
  99
 100 static inline int spapr_vio_dma_read(SpaprVioDevice *dev, uint64_t taddr,
 101                                      void *buf, uint32_t size)
 102 {
 103     return (dma_memory_read(&dev->as, taddr, buf, size) != 0) ?
 104         H_DEST_PARM : H_SUCCESS;
 105 }
 106
 107 static inline int spapr_vio_dma_write(SpaprVioDevice *dev, uint64_t taddr,
 108                                       const void *buf, uint32_t size)
 109 {
 110     return (dma_memory_write(&dev->as, taddr, buf, size) != 0) ?
 111         H_DEST_PARM : H_SUCCESS;
 112 }
 113
 114 static inline int spapr_vio_dma_set(SpaprVioDevice *dev, uint64_t taddr,
 115                                     uint8_t c, uint32_t size)
 116 {
 117     return (dma_memory_set(&dev->as, taddr, c, size) != 0) ?
 118         H_DEST_PARM : H_SUCCESS;
 119 }
 120
 121 #define vio_stb(_dev, _addr, _val) (stb_dma(&(_dev)->as, (_addr), (_val)))
 122 #define vio_sth(_dev, _addr, _val) (stw_be_dma(&(_dev)->as, (_addr), (_val)))
 123 #define vio_stl(_dev, _addr, _val) (stl_be_dma(&(_dev)->as, (_addr), (_val)))
 124 #define vio_stq(_dev, _addr, _val) (stq_be_dma(&(_dev)->as, (_addr), (_val)))
 125 #define vio_ldq(_dev, _addr) (ldq_be_dma(&(_dev)->as, (_addr)))
 126
 127 int spapr_vio_send_crq(SpaprVioDevice *dev, uint8_t *crq);
 128
 129 SpaprVioDevice *vty_lookup(SpaprMachineState *spapr, target_ulong reg);
 130 void vty_putchars(SpaprVioDevice *sdev, uint8_t *buf, int len);
 131 void spapr_vty_create(SpaprVioBus *bus, Chardev *chardev);
 132 void spapr_vlan_create(SpaprVioBus *bus, NICInfo *nd);
 133 void spapr_vscsi_create(SpaprVioBus *bus);
 134
 135 SpaprVioDevice *spapr_vty_get_default(SpaprVioBus *bus);
 136
 137 extern const VMStateDescription vmstate_spapr_vio;
 138
 139 #define VMSTATE_SPAPR_VIO(_f, _s) \
 140     VMSTATE_STRUCT(_f, _s, 0, vmstate_spapr_vio, SpaprVioDevice)
 141
 142 void spapr_vio_set_bypass(SpaprVioDevice *dev, bool bypass);
 143
 144 #endif /* HW_SPAPR_VIO_H */