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8#include <sound/core.h>
9#include <sound/hwdep.h>
10#include <linux/uaccess.h>
11#include <linux/nospec.h>
12#include "emux_voice.h"
13
14#define TMP_CLIENT_ID 0x1001
15
16
17
18
19static int
20snd_emux_hwdep_load_patch(struct snd_emux *emu, void __user *arg)
21{
22 int err;
23 struct soundfont_patch_info patch;
24
25 if (copy_from_user(&patch, arg, sizeof(patch)))
26 return -EFAULT;
27
28 if (patch.key == GUS_PATCH)
29 return snd_soundfont_load_guspatch(emu->sflist, arg,
30 patch.len + sizeof(patch),
31 TMP_CLIENT_ID);
32
33 if (patch.type >= SNDRV_SFNT_LOAD_INFO &&
34 patch.type <= SNDRV_SFNT_PROBE_DATA) {
35 err = snd_soundfont_load(emu->sflist, arg, patch.len + sizeof(patch), TMP_CLIENT_ID);
36 if (err < 0)
37 return err;
38 } else {
39 if (emu->ops.load_fx)
40 return emu->ops.load_fx(emu, patch.type, patch.optarg, arg, patch.len + sizeof(patch));
41 else
42 return -EINVAL;
43 }
44 return 0;
45}
46
47
48
49
50static int
51snd_emux_hwdep_misc_mode(struct snd_emux *emu, void __user *arg)
52{
53 struct snd_emux_misc_mode info;
54 int i;
55
56 if (copy_from_user(&info, arg, sizeof(info)))
57 return -EFAULT;
58 if (info.mode < 0 || info.mode >= EMUX_MD_END)
59 return -EINVAL;
60 info.mode = array_index_nospec(info.mode, EMUX_MD_END);
61
62 if (info.port < 0) {
63 for (i = 0; i < emu->num_ports; i++)
64 emu->portptrs[i]->ctrls[info.mode] = info.value;
65 } else {
66 if (info.port < emu->num_ports) {
67 info.port = array_index_nospec(info.port, emu->num_ports);
68 emu->portptrs[info.port]->ctrls[info.mode] = info.value;
69 }
70 }
71 return 0;
72}
73
74
75
76
77
78static int
79snd_emux_hwdep_ioctl(struct snd_hwdep * hw, struct file *file,
80 unsigned int cmd, unsigned long arg)
81{
82 struct snd_emux *emu = hw->private_data;
83
84 switch (cmd) {
85 case SNDRV_EMUX_IOCTL_VERSION:
86 return put_user(SNDRV_EMUX_VERSION, (unsigned int __user *)arg);
87 case SNDRV_EMUX_IOCTL_LOAD_PATCH:
88 return snd_emux_hwdep_load_patch(emu, (void __user *)arg);
89 case SNDRV_EMUX_IOCTL_RESET_SAMPLES:
90 snd_soundfont_remove_samples(emu->sflist);
91 break;
92 case SNDRV_EMUX_IOCTL_REMOVE_LAST_SAMPLES:
93 snd_soundfont_remove_unlocked(emu->sflist);
94 break;
95 case SNDRV_EMUX_IOCTL_MEM_AVAIL:
96 if (emu->memhdr) {
97 int size = snd_util_mem_avail(emu->memhdr);
98 return put_user(size, (unsigned int __user *)arg);
99 }
100 break;
101 case SNDRV_EMUX_IOCTL_MISC_MODE:
102 return snd_emux_hwdep_misc_mode(emu, (void __user *)arg);
103 }
104
105 return 0;
106}
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111
112
113int
114snd_emux_init_hwdep(struct snd_emux *emu)
115{
116 struct snd_hwdep *hw;
117 int err;
118
119 err = snd_hwdep_new(emu->card, SNDRV_EMUX_HWDEP_NAME, emu->hwdep_idx, &hw);
120 if (err < 0)
121 return err;
122 emu->hwdep = hw;
123 strcpy(hw->name, SNDRV_EMUX_HWDEP_NAME);
124 hw->iface = SNDRV_HWDEP_IFACE_EMUX_WAVETABLE;
125 hw->ops.ioctl = snd_emux_hwdep_ioctl;
126
127
128 hw->ops.ioctl_compat = snd_emux_hwdep_ioctl;
129 hw->exclusive = 1;
130 hw->private_data = emu;
131 err = snd_card_register(emu->card);
132 if (err < 0)
133 return err;
134
135 return 0;
136}
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140
141
142void
143snd_emux_delete_hwdep(struct snd_emux *emu)
144{
145 if (emu->hwdep) {
146 snd_device_free(emu->card, emu->hwdep);
147 emu->hwdep = NULL;
148 }
149}
150