1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
|
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright (C) IBM Corp. 2005
*
* Authors: Jimi Xenidis <jimix@watson.ibm.com>
*/
#include <xen/config.h>
#include <xen/types.h>
#include <xen/sched.h>
#include <xen/init.h>
#include <public/xen.h>
#include <asm/current.h>
#include <asm/papr.h>
#include <asm/hcalls.h>
#define DABR_BT (1UL << 2)
#define DABR_DW (1UL << 1)
#define DABR_DR (1UL << 0)
#define DABRX_BT (1UL << 3)
#define DABRX_HYP (1UL << 2)
#define DABRX_PNH (1UL << 1)
#define DABRX_PRO (1UL << 0)
static inline int has_dabrx(void) { return 1; }
static void h_set_dabr(struct cpu_user_regs *regs)
{
ulong dabr = regs->gprs[4];
if (!has_dabrx()) {
if (!(dabr & DABR_BT)) {
regs->gprs[3] = H_Parameter;
return;
}
} else {
asm volatile("mtspr %0,%1" : : "I" (SPRN_DABRX), "r" (2) : "memory");
}
asm volatile("mtspr %0,%1" : : "I" (SPRN_DABR), "r" (dabr) : "memory");
regs->gprs[3] = H_Success;
}
static void h_set_xdabr(struct cpu_user_regs *regs)
{
ulong dabr = regs->gprs[4];
ulong dabrx = regs->gprs[5];
if (!has_dabrx()) {
regs->gprs[3] = H_Function;
return;
}
/* make sure reserved bits are 0 */
if ((dabrx & ~((DABRX_BT << 1) - 1)) != 0) {
regs->gprs[3] = H_Parameter;
return;
}
if ((dabrx & DABRX_HYP) || dabrx == 0) {
regs->gprs[3] = H_Parameter;
return;
}
asm volatile("mtspr %0,%1; mtspr %2,%3"
: /* output */ :
"I" (SPRN_DABR), "r" (dabr),
"I" (SPRN_DABRX), "r" (dabrx) : "memory");
regs->gprs[3] = H_Success;
}
__init_papr_hcall(H_SET_DABR, h_set_dabr);
__init_papr_hcall(H_SET_XDABR, h_set_xdabr);
|
