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 #define SPAPR_VIO_TCE_PAGE_SHIFT   12
  25 #define SPAPR_VIO_TCE_PAGE_SIZE    (1ULL << SPAPR_VIO_TCE_PAGE_SHIFT)
  26 #define SPAPR_VIO_TCE_PAGE_MASK    (SPAPR_VIO_TCE_PAGE_SIZE - 1)
  27
  28 enum VIOsPAPR_TCEAccess {
  29     SPAPR_TCE_FAULT = 0,
  30     SPAPR_TCE_RO = 1,
  31     SPAPR_TCE_WO = 2,
  32     SPAPR_TCE_RW = 3,
  33 };
  34
  35 #define SPAPR_VTY_BASE_ADDRESS     0x30000000
  36
  37 #define TYPE_VIO_SPAPR_DEVICE "vio-spapr-device"
  38 #define VIO_SPAPR_DEVICE(obj) \
  39      OBJECT_CHECK(VIOsPAPRDevice, (obj), TYPE_VIO_SPAPR_DEVICE)
  40 #define VIO_SPAPR_DEVICE_CLASS(klass) \
  41      OBJECT_CLASS_CHECK(VIOsPAPRDeviceClass, (klass), TYPE_VIO_SPAPR_DEVICE)
  42 #define VIO_SPAPR_DEVICE_GET_CLASS(obj) \
  43      OBJECT_GET_CLASS(VIOsPAPRDeviceClass, (obj), TYPE_VIO_SPAPR_DEVICE)
  44
  45 struct VIOsPAPRDevice;
  46
  47 typedef struct VIOsPAPR_RTCE {
  48     uint64_t tce;
  49 } VIOsPAPR_RTCE;
  50
  51 typedef struct VIOsPAPR_CRQ {
  52     uint64_t qladdr;
  53     uint32_t qsize;
  54     uint32_t qnext;
  55     int(*SendFunc)(struct VIOsPAPRDevice *vdev, uint8_t *crq);
  56 } VIOsPAPR_CRQ;
  57
  58 typedef struct VIOsPAPRDevice VIOsPAPRDevice;
  59 typedef struct VIOsPAPRBus VIOsPAPRBus;
  60
  61 typedef struct VIOsPAPRDeviceClass {
  62     DeviceClass parent_class;
  63
  64     const char *dt_name, *dt_type, *dt_compatible;
  65     target_ulong signal_mask;
  66     int (*init)(VIOsPAPRDevice *dev);
  67     void (*reset)(VIOsPAPRDevice *dev);
  68     int (*devnode)(VIOsPAPRDevice *dev, void *fdt, int node_off);
  69 } VIOsPAPRDeviceClass;
  70
  71 struct VIOsPAPRDevice {
  72     DeviceState qdev;
  73     uint32_t reg;
  74     uint32_t flags;
  75 #define VIO_PAPR_FLAG_DMA_BYPASS        0x1
  76     qemu_irq qirq;
  77     uint32_t vio_irq_num;
  78     target_ulong signal_state;
  79     uint32_t rtce_window_size;
  80     VIOsPAPR_RTCE *rtce_table;
  81     int kvmtce_fd;
  82     VIOsPAPR_CRQ crq;
  83 };
  84
  85 #define DEFINE_SPAPR_PROPERTIES(type, field, default_reg, default_dma_window) \
  86         DEFINE_PROP_UINT32("reg", type, field.reg, default_reg), \
  87         DEFINE_PROP_UINT32("dma-window", type, field.rtce_window_size, \
  88                            default_dma_window)
  89
  90 struct VIOsPAPRBus {
  91     BusState bus;
  92     int (*init)(VIOsPAPRDevice *dev);
  93     int (*devnode)(VIOsPAPRDevice *dev, void *fdt, int node_off);
  94 };
  95
  96 extern VIOsPAPRBus *spapr_vio_bus_init(void);
  97 extern VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg);
  98 extern int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt);
  99 extern int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus);
 100
 101 extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode);
 102
 103 int spapr_vio_check_tces(VIOsPAPRDevice *dev, target_ulong ioba,
 104                          target_ulong len,
 105                          enum VIOsPAPR_TCEAccess access);
 106
 107 int spapr_tce_dma_read(VIOsPAPRDevice *dev, uint64_t taddr,
 108                        void *buf, uint32_t size);
 109 int spapr_tce_dma_write(VIOsPAPRDevice *dev, uint64_t taddr,
 110                         const void *buf, uint32_t size);
 111 int spapr_tce_dma_zero(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t size);
 112 void stb_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint8_t val);
 113 void sth_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint16_t val);
 114 void stw_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t val);
 115 void stq_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint64_t val);
 116 uint64_t ldq_tce(VIOsPAPRDevice *dev, uint64_t taddr);
 117
 118 int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq);
 119
 120 VIOsPAPRDevice *vty_lookup(sPAPREnvironment *spapr, target_ulong reg);
 121 void vty_putchars(VIOsPAPRDevice *sdev, uint8_t *buf, int len);
 122 void spapr_vty_create(VIOsPAPRBus *bus, uint32_t reg, CharDriverState *chardev);
 123 void spapr_vlan_create(VIOsPAPRBus *bus, uint32_t reg, NICInfo *nd);
 124 void spapr_vscsi_create(VIOsPAPRBus *bus, uint32_t reg);
 125
 126 VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus);
 127
 128 int spapr_tce_set_bypass(uint32_t unit, uint32_t enable);
 129 void spapr_vio_quiesce(void);
 130
 131 #endif /* _HW_SPAPR_VIO_H */