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 struct VIOsPAPRDevice;
  36
  37 typedef struct VIOsPAPR_RTCE {
  38     uint64_t tce;
  39 } VIOsPAPR_RTCE;
  40
  41 typedef struct VIOsPAPR_CRQ {
  42     uint64_t qladdr;
  43     uint32_t qsize;
  44     uint32_t qnext;
  45     int(*SendFunc)(struct VIOsPAPRDevice *vdev, uint8_t *crq);
  46 } VIOsPAPR_CRQ;
  47
  48 typedef struct VIOsPAPRDevice {
  49     DeviceState qdev;
  50     uint32_t reg;
  51     uint32_t flags;
  52 #define VIO_PAPR_FLAG_DMA_BYPASS        0x1
  53     qemu_irq qirq;
  54     uint32_t vio_irq_num;
  55     target_ulong signal_state;
  56     uint32_t rtce_window_size;
  57     VIOsPAPR_RTCE *rtce_table;
  58     VIOsPAPR_CRQ crq;
  59 } VIOsPAPRDevice;
  60
  61 typedef struct VIOsPAPRBus {
  62     BusState bus;
  63 } VIOsPAPRBus;
  64
  65 typedef struct {
  66     DeviceInfo qdev;
  67     const char *dt_name, *dt_type, *dt_compatible;
  68     target_ulong signal_mask;
  69     int (*init)(VIOsPAPRDevice *dev);
  70     void (*hcalls)(VIOsPAPRBus *bus);
  71     int (*devnode)(VIOsPAPRDevice *dev, void *fdt, int node_off);
  72 } VIOsPAPRDeviceInfo;
  73
  74 extern VIOsPAPRBus *spapr_vio_bus_init(void);
  75 extern VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg);
  76 extern void spapr_vio_bus_register_withprop(VIOsPAPRDeviceInfo *info);
  77 extern int spapr_populate_vdevice(VIOsPAPRBus *bus, void *fdt);
  78
  79 extern int spapr_vio_signal(VIOsPAPRDevice *dev, target_ulong mode);
  80
  81 int spapr_vio_check_tces(VIOsPAPRDevice *dev, target_ulong ioba,
  82                          target_ulong len,
  83                          enum VIOsPAPR_TCEAccess access);
  84
  85 int spapr_tce_dma_read(VIOsPAPRDevice *dev, uint64_t taddr,
  86                        void *buf, uint32_t size);
  87 int spapr_tce_dma_write(VIOsPAPRDevice *dev, uint64_t taddr,
  88                         const void *buf, uint32_t size);
  89 int spapr_tce_dma_zero(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t size);
  90 void stb_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint8_t val);
  91 void sth_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint16_t val);
  92 void stw_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint32_t val);
  93 void stq_tce(VIOsPAPRDevice *dev, uint64_t taddr, uint64_t val);
  94 uint64_t ldq_tce(VIOsPAPRDevice *dev, uint64_t taddr);
  95
  96 int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq);
  97
  98 void vty_putchars(VIOsPAPRDevice *sdev, uint8_t *buf, int len);
  99 void spapr_vty_create(VIOsPAPRBus *bus,
 100                       uint32_t reg, CharDriverState *chardev,
 101                       qemu_irq qirq, uint32_t vio_irq_num);
 102
 103 void spapr_vlan_create(VIOsPAPRBus *bus, uint32_t reg, NICInfo *nd,
 104                        qemu_irq qirq, uint32_t vio_irq_num);
 105
 106 void spapr_vscsi_create(VIOsPAPRBus *bus, uint32_t reg,
 107                         qemu_irq qirq, uint32_t vio_irq_num);
 108
 109 int spapr_tce_set_bypass(uint32_t unit, uint32_t enable);
 110 void spapr_vio_quiesce(void);
 111
 112 #endif /* _HW_SPAPR_VIO_H */