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 struct VIOsPAPRDevice;
  38
  39 typedef struct VIOsPAPR_RTCE {
  40     uint64_t tce;
  41 } VIOsPAPR_RTCE;
  42
  43 typedef struct VIOsPAPR_CRQ {
  44     uint64_t qladdr;
  45     uint32_t qsize;
  46     uint32_t qnext;
  47     int(*SendFunc)(struct VIOsPAPRDevice *vdev, uint8_t *crq);
  48 } VIOsPAPR_CRQ;
  49
  50 typedef struct VIOsPAPRDevice {
  51     DeviceState qdev;
  52     uint32_t reg;
  53     uint32_t flags;
  54 #define VIO_PAPR_FLAG_DMA_BYPASS        0x1
  55     qemu_irq qirq;
  56     uint32_t vio_irq_num;
  57     target_ulong signal_state;
  58     uint32_t rtce_window_size;
  59     VIOsPAPR_RTCE *rtce_table;
  60     int kvmtce_fd;
  61     VIOsPAPR_CRQ crq;
  62 } VIOsPAPRDevice;
  63
  64 #define DEFINE_SPAPR_PROPERTIES(type, field, default_reg, default_dma_window) \
  65         DEFINE_PROP_UINT32("reg", type, field.reg, default_reg), \
  66         DEFINE_PROP_UINT32("dma-window", type, field.rtce_window_size, \
  67                            default_dma_window)
  68
  69 typedef struct VIOsPAPRBus {
  70     BusState bus;
  71 } VIOsPAPRBus;
  72
  73 typedef struct {
  74     DeviceInfo qdev;
  75     const char *dt_name, *dt_type, *dt_compatible;
  76     target_ulong signal_mask;
  77     int (*init)(VIOsPAPRDevice *dev);
  78     int (*devnode)(VIOsPAPRDevice *dev, void *fdt, int node_off);
  79 } VIOsPAPRDeviceInfo;
  80
  81 extern VIOsPAPRBus *spapr_vio_bus_init(void);
  82 extern VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg);
  83 extern void spapr_vio_bus_register_withprop(VIOsPAPRDeviceInfo *info);
  84 extern int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt);
  85 extern int spapr_populate_chosen_stdout(void *fdt, VIOsPAPRBus *bus);
  86
  87 extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode);
  88
  89 int spapr_vio_check_tces(VIOsPAPRDevice *dev, target_ulong ioba,
  90                          target_ulong len,
  91                          enum VIOsPAPR_TCEAccess access);
  92
  93 int spapr_tce_dma_read(VIOsPAPRDevice *dev, uint64_t taddr,
  94                        void *buf, uint32_t size);
  95 int spapr_tce_dma_write(VIOsPAPRDevice *dev, uint64_t taddr,
  96                         const void *buf, uint32_t size);
  97 int spapr_tce_dma_zero(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t size);
  98 void stb_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint8_t val);
  99 void sth_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint16_t val);
 100 void stw_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t val);
 101 void stq_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint64_t val);
 102 uint64_t ldq_tce(VIOsPAPRDevice *dev, uint64_t taddr);
 103
 104 int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq);
 105
 106 void vty_putchars(VIOsPAPRDevice *sdev, uint8_t *buf, int len);
 107 void spapr_vty_create(VIOsPAPRBus *bus, uint32_t reg, CharDriverState *chardev);
 108 void spapr_vlan_create(VIOsPAPRBus *bus, uint32_t reg, NICInfo *nd);
 109 void spapr_vscsi_create(VIOsPAPRBus *bus, uint32_t reg);
 110
 111 VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus);
 112
 113 int spapr_tce_set_bypass(uint32_t unit, uint32_t enable);
 114 void spapr_vio_quiesce(void);
 115
 116 #endif /* _HW_SPAPR_VIO_H */