xref: /openbmc/qemu/include/hw/ppc/spapr_vio.h (revision 709395f8)
1 #ifndef HW_SPAPR_VIO_H
2 #define HW_SPAPR_VIO_H
3 
4 /*
5  * QEMU sPAPR VIO bus definitions
6  *
7  * Copyright (c) 2010 David Gibson, IBM Corporation <david@gibson.dropbear.id.au>
8  * Based on the s390 virtio bus definitions:
9  * Copyright (c) 2009 Alexander Graf <agraf@suse.de>
10  *
11  * This library is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU Lesser General Public
13  * License as published by the Free Software Foundation; either
14  * version 2 of the License, or (at your option) any later version.
15  *
16  * This library is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
19  * Lesser General Public License for more details.
20  *
21  * You should have received a copy of the GNU Lesser General Public
22  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
23  */
24 
25 #include "sysemu/dma.h"
26 
27 #define TYPE_VIO_SPAPR_DEVICE "vio-spapr-device"
28 #define VIO_SPAPR_DEVICE(obj) \
29      OBJECT_CHECK(VIOsPAPRDevice, (obj), TYPE_VIO_SPAPR_DEVICE)
30 #define VIO_SPAPR_DEVICE_CLASS(klass) \
31      OBJECT_CLASS_CHECK(VIOsPAPRDeviceClass, (klass), TYPE_VIO_SPAPR_DEVICE)
32 #define VIO_SPAPR_DEVICE_GET_CLASS(obj) \
33      OBJECT_GET_CLASS(VIOsPAPRDeviceClass, (obj), TYPE_VIO_SPAPR_DEVICE)
34 
35 #define TYPE_SPAPR_VIO_BUS "spapr-vio-bus"
36 #define SPAPR_VIO_BUS(obj) OBJECT_CHECK(VIOsPAPRBus, (obj), TYPE_SPAPR_VIO_BUS)
37 
38 #define TYPE_SPAPR_VIO_BRIDGE "spapr-vio-bridge"
39 
40 typedef struct VIOsPAPR_CRQ {
41     uint64_t qladdr;
42     uint32_t qsize;
43     uint32_t qnext;
44     int(*SendFunc)(struct VIOsPAPRDevice *vdev, uint8_t *crq);
45 } VIOsPAPR_CRQ;
46 
47 typedef struct VIOsPAPRDevice VIOsPAPRDevice;
48 typedef struct VIOsPAPRBus VIOsPAPRBus;
49 
50 typedef struct VIOsPAPRDeviceClass {
51     DeviceClass parent_class;
52 
53     const char *dt_name, *dt_type, *dt_compatible;
54     target_ulong signal_mask;
55     uint32_t rtce_window_size;
56     void (*realize)(VIOsPAPRDevice *dev, Error **errp);
57     void (*reset)(VIOsPAPRDevice *dev);
58     int (*devnode)(VIOsPAPRDevice *dev, void *fdt, int node_off);
59 } VIOsPAPRDeviceClass;
60 
61 struct VIOsPAPRDevice {
62     DeviceState qdev;
63     uint32_t reg;
64     uint32_t irq;
65     uint64_t signal_state;
66     VIOsPAPR_CRQ crq;
67     AddressSpace as;
68     MemoryRegion mrroot;
69     MemoryRegion mrbypass;
70     sPAPRTCETable *tcet;
71 };
72 
73 #define DEFINE_SPAPR_PROPERTIES(type, field)           \
74         DEFINE_PROP_UINT32("reg", type, field.reg, -1)
75 
76 struct VIOsPAPRBus {
77     BusState bus;
78     uint32_t next_reg;
79 };
80 
81 extern VIOsPAPRBus *spapr_vio_bus_init(void);
82 extern VIOsPAPRDevice *spapr_vio_find_by_reg(VIOsPAPRBus *bus, uint32_t reg);
83 void spapr_dt_vdevice(VIOsPAPRBus *bus, void *fdt);
84 extern gchar *spapr_vio_stdout_path(VIOsPAPRBus *bus);
85 
86 static inline qemu_irq spapr_vio_qirq(VIOsPAPRDevice *dev)
87 {
88     sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
89 
90     return spapr_qirq(spapr, dev->irq);
91 }
92 
93 static inline bool spapr_vio_dma_valid(VIOsPAPRDevice *dev, uint64_t taddr,
94                                        uint32_t size, DMADirection dir)
95 {
96     return dma_memory_valid(&dev->as, taddr, size, dir);
97 }
98 
99 static inline int spapr_vio_dma_read(VIOsPAPRDevice *dev, uint64_t taddr,
100                                      void *buf, uint32_t size)
101 {
102     return (dma_memory_read(&dev->as, taddr, buf, size) != 0) ?
103         H_DEST_PARM : H_SUCCESS;
104 }
105 
106 static inline int spapr_vio_dma_write(VIOsPAPRDevice *dev, uint64_t taddr,
107                                       const void *buf, uint32_t size)
108 {
109     return (dma_memory_write(&dev->as, taddr, buf, size) != 0) ?
110         H_DEST_PARM : H_SUCCESS;
111 }
112 
113 static inline int spapr_vio_dma_set(VIOsPAPRDevice *dev, uint64_t taddr,
114                                     uint8_t c, uint32_t size)
115 {
116     return (dma_memory_set(&dev->as, taddr, c, size) != 0) ?
117         H_DEST_PARM : H_SUCCESS;
118 }
119 
120 #define vio_stb(_dev, _addr, _val) (stb_dma(&(_dev)->as, (_addr), (_val)))
121 #define vio_sth(_dev, _addr, _val) (stw_be_dma(&(_dev)->as, (_addr), (_val)))
122 #define vio_stl(_dev, _addr, _val) (stl_be_dma(&(_dev)->as, (_addr), (_val)))
123 #define vio_stq(_dev, _addr, _val) (stq_be_dma(&(_dev)->as, (_addr), (_val)))
124 #define vio_ldq(_dev, _addr) (ldq_be_dma(&(_dev)->as, (_addr)))
125 
126 int spapr_vio_send_crq(VIOsPAPRDevice *dev, uint8_t *crq);
127 
128 VIOsPAPRDevice *vty_lookup(sPAPRMachineState *spapr, target_ulong reg);
129 void vty_putchars(VIOsPAPRDevice *sdev, uint8_t *buf, int len);
130 void spapr_vty_create(VIOsPAPRBus *bus, Chardev *chardev);
131 void spapr_vlan_create(VIOsPAPRBus *bus, NICInfo *nd);
132 void spapr_vscsi_create(VIOsPAPRBus *bus);
133 
134 VIOsPAPRDevice *spapr_vty_get_default(VIOsPAPRBus *bus);
135 
136 extern const VMStateDescription vmstate_spapr_vio;
137 
138 #define VMSTATE_SPAPR_VIO(_f, _s) \
139     VMSTATE_STRUCT(_f, _s, 0, vmstate_spapr_vio, VIOsPAPRDevice)
140 
141 void spapr_vio_set_bypass(VIOsPAPRDevice *dev, bool bypass);
142 
143 #endif /* HW_SPAPR_VIO_H */
144