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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2016-2019 HabanaLabs, Ltd.
* All Rights Reserved.
*/
#include <uapi/misc/habanalabs.h>
#include "habanalabs.h"
#include <linux/fs.h>
#include <linux/uaccess.h>
#include <linux/slab.h>
static int hw_ip_info(struct hl_device *hdev, struct hl_info_args *args)
{
struct hl_info_hw_ip_info hw_ip = {0};
u32 size = args->return_size;
void __user *out = (void __user *) (uintptr_t) args->return_pointer;
struct asic_fixed_properties *prop = &hdev->asic_prop;
u64 sram_kmd_size, dram_kmd_size;
if ((!size) || (!out))
return -EINVAL;
sram_kmd_size = (prop->sram_user_base_address -
prop->sram_base_address);
dram_kmd_size = (prop->dram_user_base_address -
prop->dram_base_address);
hw_ip.device_id = hdev->asic_funcs->get_pci_id(hdev);
hw_ip.sram_base_address = prop->sram_user_base_address;
hw_ip.dram_base_address = prop->dram_user_base_address;
hw_ip.tpc_enabled_mask = prop->tpc_enabled_mask;
hw_ip.sram_size = prop->sram_size - sram_kmd_size;
hw_ip.dram_size = prop->dram_size - dram_kmd_size;
if (hw_ip.dram_size > 0)
hw_ip.dram_enabled = 1;
hw_ip.num_of_events = prop->num_of_events;
memcpy(hw_ip.armcp_version,
prop->armcp_info.armcp_version, VERSION_MAX_LEN);
hw_ip.armcp_cpld_version = __le32_to_cpu(prop->armcp_info.cpld_version);
hw_ip.psoc_pci_pll_nr = prop->psoc_pci_pll_nr;
hw_ip.psoc_pci_pll_nf = prop->psoc_pci_pll_nf;
hw_ip.psoc_pci_pll_od = prop->psoc_pci_pll_od;
hw_ip.psoc_pci_pll_div_factor = prop->psoc_pci_pll_div_factor;
return copy_to_user(out, &hw_ip,
min((size_t)size, sizeof(hw_ip))) ? -EFAULT : 0;
}
static int hw_events_info(struct hl_device *hdev, struct hl_info_args *args)
{
u32 size, max_size = args->return_size;
void __user *out = (void __user *) (uintptr_t) args->return_pointer;
void *arr;
if ((!max_size) || (!out))
return -EINVAL;
arr = hdev->asic_funcs->get_events_stat(hdev, &size);
return copy_to_user(out, arr, min(max_size, size)) ? -EFAULT : 0;
}
static int dram_usage_info(struct hl_device *hdev, struct hl_info_args *args)
{
struct hl_info_dram_usage dram_usage = {0};
u32 max_size = args->return_size;
void __user *out = (void __user *) (uintptr_t) args->return_pointer;
struct asic_fixed_properties *prop = &hdev->asic_prop;
u64 dram_kmd_size;
if ((!max_size) || (!out))
return -EINVAL;
dram_kmd_size = (prop->dram_user_base_address -
prop->dram_base_address);
dram_usage.dram_free_mem = (prop->dram_size - dram_kmd_size) -
atomic64_read(&hdev->dram_used_mem);
dram_usage.ctx_dram_mem = atomic64_read(&hdev->user_ctx->dram_phys_mem);
return copy_to_user(out, &dram_usage,
min((size_t) max_size, sizeof(dram_usage))) ? -EFAULT : 0;
}
static int hw_idle(struct hl_device *hdev, struct hl_info_args *args)
{
struct hl_info_hw_idle hw_idle = {0};
u32 max_size = args->return_size;
void __user *out = (void __user *) (uintptr_t) args->return_pointer;
if ((!max_size) || (!out))
return -EINVAL;
hw_idle.is_idle = hdev->asic_funcs->is_device_idle(hdev);
return copy_to_user(out, &hw_idle,
min((size_t) max_size, sizeof(hw_idle))) ? -EFAULT : 0;
}
static int hl_info_ioctl(struct hl_fpriv *hpriv, void *data)
{
struct hl_info_args *args = data;
struct hl_device *hdev = hpriv->hdev;
int rc;
if (hl_device_disabled_or_in_reset(hdev)) {
dev_err(hdev->dev,
"Device is disabled or in reset. Can't execute INFO IOCTL\n");
return -EBUSY;
}
switch (args->op) {
case HL_INFO_HW_IP_INFO:
rc = hw_ip_info(hdev, args);
break;
case HL_INFO_HW_EVENTS:
rc = hw_events_info(hdev, args);
break;
case HL_INFO_DRAM_USAGE:
rc = dram_usage_info(hdev, args);
break;
case HL_INFO_HW_IDLE:
rc = hw_idle(hdev, args);
break;
default:
dev_err(hdev->dev, "Invalid request %d\n", args->op);
rc = -ENOTTY;
break;
}
return rc;
}
#define HL_IOCTL_DEF(ioctl, _func) \
[_IOC_NR(ioctl)] = {.cmd = ioctl, .func = _func}
static const struct hl_ioctl_desc hl_ioctls[] = {
HL_IOCTL_DEF(HL_IOCTL_INFO, hl_info_ioctl),
HL_IOCTL_DEF(HL_IOCTL_CB, hl_cb_ioctl),
HL_IOCTL_DEF(HL_IOCTL_CS, hl_cs_ioctl),
HL_IOCTL_DEF(HL_IOCTL_WAIT_CS, hl_cs_wait_ioctl),
HL_IOCTL_DEF(HL_IOCTL_MEMORY, hl_mem_ioctl)
};
#define HL_CORE_IOCTL_COUNT ARRAY_SIZE(hl_ioctls)
long hl_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
{
struct hl_fpriv *hpriv = filep->private_data;
struct hl_device *hdev = hpriv->hdev;
hl_ioctl_t *func;
const struct hl_ioctl_desc *ioctl = NULL;
unsigned int nr = _IOC_NR(cmd);
char stack_kdata[128] = {0};
char *kdata = NULL;
unsigned int usize, asize;
int retcode;
if (hdev->hard_reset_pending) {
dev_crit_ratelimited(hdev->dev,
"Device HARD reset pending! Please close FD\n");
return -ENODEV;
}
if ((nr >= HL_COMMAND_START) && (nr < HL_COMMAND_END)) {
u32 hl_size;
ioctl = &hl_ioctls[nr];
hl_size = _IOC_SIZE(ioctl->cmd);
usize = asize = _IOC_SIZE(cmd);
if (hl_size > asize)
asize = hl_size;
cmd = ioctl->cmd;
} else {
dev_err(hdev->dev, "invalid ioctl: pid=%d, nr=0x%02x\n",
task_pid_nr(current), nr);
return -ENOTTY;
}
/* Do not trust userspace, use our own definition */
func = ioctl->func;
if (unlikely(!func)) {
dev_dbg(hdev->dev, "no function\n");
retcode = -ENOTTY;
goto out_err;
}
if (cmd & (IOC_IN | IOC_OUT)) {
if (asize <= sizeof(stack_kdata)) {
kdata = stack_kdata;
} else {
kdata = kzalloc(asize, GFP_KERNEL);
if (!kdata) {
retcode = -ENOMEM;
goto out_err;
}
}
}
if (cmd & IOC_IN) {
if (copy_from_user(kdata, (void __user *)arg, usize)) {
retcode = -EFAULT;
goto out_err;
}
} else if (cmd & IOC_OUT) {
memset(kdata, 0, usize);
}
retcode = func(hpriv, kdata);
if (cmd & IOC_OUT)
if (copy_to_user((void __user *)arg, kdata, usize))
retcode = -EFAULT;
out_err:
if (retcode)
dev_dbg(hdev->dev,
"error in ioctl: pid=%d, cmd=0x%02x, nr=0x%02x\n",
task_pid_nr(current), cmd, nr);
if (kdata != stack_kdata)
kfree(kdata);
return retcode;
}
|
