2 * IBM PowerPC iSeries Virtual I/O Infrastructure Support.
4 * Copyright (c) 2005 Stephen Rothwell, IBM Corp.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
11 #include <linux/types.h>
12 #include <linux/device.h>
13 #include <linux/init.h>
16 #include <asm/iommu.h>
17 #include <asm/abs_addr.h>
19 #include <asm/iSeries/vio.h>
20 #include <asm/iSeries/HvTypes.h>
21 #include <asm/iSeries/HvLpConfig.h>
22 #include <asm/iSeries/HvCallXm.h>
24 struct device
*iSeries_vio_dev
= &vio_bus_device
.dev
;
25 EXPORT_SYMBOL(iSeries_vio_dev
);
27 static struct iommu_table veth_iommu_table
;
28 static struct iommu_table vio_iommu_table
;
30 void __init
iommu_vio_init(void)
32 struct iommu_table
*t
;
33 struct iommu_table_cb cb
;
35 unsigned long itc_entries
;
37 cb
.itc_busno
= 255; /* Bus 255 is the virtual bus */
38 cb
.itc_virtbus
= 0xff; /* Ask for virtual bus */
40 cbp
= virt_to_abs(&cb
);
41 HvCallXm_getTceTableParms(cbp
);
43 itc_entries
= cb
.itc_size
* PAGE_SIZE
/ sizeof(union tce_entry
);
44 veth_iommu_table
.it_size
= itc_entries
/ 2;
45 veth_iommu_table
.it_busno
= cb
.itc_busno
;
46 veth_iommu_table
.it_offset
= cb
.itc_offset
;
47 veth_iommu_table
.it_index
= cb
.itc_index
;
48 veth_iommu_table
.it_type
= TCE_VB
;
49 veth_iommu_table
.it_blocksize
= 1;
51 t
= iommu_init_table(&veth_iommu_table
);
54 printk("Virtual Bus VETH TCE table failed.\n");
56 vio_iommu_table
.it_size
= itc_entries
- veth_iommu_table
.it_size
;
57 vio_iommu_table
.it_busno
= cb
.itc_busno
;
58 vio_iommu_table
.it_offset
= cb
.itc_offset
+
59 veth_iommu_table
.it_size
;
60 vio_iommu_table
.it_index
= cb
.itc_index
;
61 vio_iommu_table
.it_type
= TCE_VB
;
62 vio_iommu_table
.it_blocksize
= 1;
64 t
= iommu_init_table(&vio_iommu_table
);
67 printk("Virtual Bus VIO TCE table failed.\n");
71 * vio_register_device: - Register a new vio device.
72 * @voidev: The device to register.
74 static struct vio_dev
*__init
vio_register_device_iseries(char *type
,
77 struct vio_dev
*viodev
;
79 /* allocate a vio_dev for this node */
80 viodev
= kmalloc(sizeof(struct vio_dev
), GFP_KERNEL
);
83 memset(viodev
, 0, sizeof(struct vio_dev
));
85 snprintf(viodev
->dev
.bus_id
, BUS_ID_SIZE
, "%s%d", type
, unit_num
);
87 return vio_register_device_common(viodev
, viodev
->dev
.bus_id
, type
,
88 unit_num
, &vio_iommu_table
);
91 void __init
probe_bus_iseries(void)
93 HvLpIndexMap vlan_map
;
94 struct vio_dev
*viodev
;
97 /* there is only one of each of these */
98 vio_register_device_iseries("viocons", 0);
99 vio_register_device_iseries("vscsi", 0);
101 vlan_map
= HvLpConfig_getVirtualLanIndexMap();
102 for (i
= 0; i
< HVMAXARCHITECTEDVIRTUALLANS
; i
++) {
103 if ((vlan_map
& (0x8000 >> i
)) == 0)
105 viodev
= vio_register_device_iseries("vlan", i
);
106 /* veth is special and has it own iommu_table */
107 viodev
->iommu_table
= &veth_iommu_table
;
109 for (i
= 0; i
< HVMAXARCHITECTEDVIRTUALDISKS
; i
++)
110 vio_register_device_iseries("viodasd", i
);
111 for (i
= 0; i
< HVMAXARCHITECTEDVIRTUALCDROMS
; i
++)
112 vio_register_device_iseries("viocd", i
);
113 for (i
= 0; i
< HVMAXARCHITECTEDVIRTUALTAPES
; i
++)
114 vio_register_device_iseries("viotape", i
);
118 * vio_bus_init_iseries: - Initialize the iSeries virtual IO bus
120 static int __init
vio_bus_init_iseries(void)
124 err
= vio_bus_init();
126 vio_bus_device
.iommu_table
= &vio_iommu_table
;
127 iSeries_vio_dev
= &vio_bus_device
.dev
;
133 __initcall(vio_bus_init_iseries
);