hw/spapr_vio.h

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