LXR qemu/hw/spapr

   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 "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
  37struct VIOsPAPRDevice;
  38
  39typedef 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
  46typedef struct VIOsPAPRDevice VIOsPAPRDevice;
  47typedef struct VIOsPAPRBus VIOsPAPRBus;
  48
  49typedef 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
  60struct 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
  72struct 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
  79extern VIOsPAPRBus *spapr_vio_bus_init(void);
  80extern VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg);
  81extern int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt);
  82extern int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus);
  83
  84extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode);
  85
  86static inline qemu_irq spapr_vio_qirq(VIOsPAPRDevice *dev)
  87{
  88    return xics_get_qirq(spapr->icp, dev->irq);
  89}
  90
  91static 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
  97static 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
 104static 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
 111static 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
 124int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq);
 125
 126VIOsPAPRDevice *vty_lookup(sPAPREnvironment *spapr, target_ulong reg);
 127void vty_putchars(VIOsPAPRDevice *sdev, uint8_t *buf, int len);
 128void spapr_vty_create(VIOsPAPRBus *bus, CharDriverState *chardev);
 129void spapr_vlan_create(VIOsPAPRBus *bus, NICInfo *nd);
 130void spapr_vscsi_create(VIOsPAPRBus *bus);
 131
 132VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus);
 133
 134void spapr_vio_quiesce(void);
 135
 136#endif /* _HW_SPAPR_VIO_H */
 137