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path: root/sound/pci/emu10k1/emufx.c
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Diffstat (limited to 'sound/pci/emu10k1/emufx.c')
-rw-r--r--sound/pci/emu10k1/emufx.c100
1 files changed, 79 insertions, 21 deletions
diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
index d8e8db89535..7b173c49695 100644
--- a/sound/pci/emu10k1/emufx.c
+++ b/sound/pci/emu10k1/emufx.c
@@ -655,13 +655,66 @@ snd_emu10k1_look_for_ctl(struct snd_emu10k1 *emu, struct snd_ctl_elem_id *id)
return NULL;
}
+#define MAX_TLV_SIZE 256
+
+static unsigned int *copy_tlv(unsigned int __user *_tlv)
+{
+ unsigned int data[2];
+ unsigned int *tlv;
+
+ if (!_tlv)
+ return NULL;
+ if (copy_from_user(data, _tlv, sizeof(data)))
+ return NULL;
+ if (data[1] >= MAX_TLV_SIZE)
+ return NULL;
+ tlv = kmalloc(data[1] * 4 + sizeof(data), GFP_KERNEL);
+ if (!tlv)
+ return NULL;
+ memcpy(tlv, data, sizeof(data));
+ if (copy_from_user(tlv + 2, _tlv + 2, data[1])) {
+ kfree(tlv);
+ return NULL;
+ }
+ return tlv;
+}
+
+static int copy_gctl(struct snd_emu10k1 *emu,
+ struct snd_emu10k1_fx8010_control_gpr *gctl,
+ struct snd_emu10k1_fx8010_control_gpr __user *_gctl,
+ int idx)
+{
+ struct snd_emu10k1_fx8010_control_old_gpr __user *octl;
+
+ if (emu->support_tlv)
+ return copy_from_user(gctl, &_gctl[idx], sizeof(*gctl));
+ octl = (struct snd_emu10k1_fx8010_control_old_gpr __user *)_gctl;
+ if (copy_from_user(gctl, &octl[idx], sizeof(*octl)))
+ return -EFAULT;
+ gctl->tlv = NULL;
+ return 0;
+}
+
+static int copy_gctl_to_user(struct snd_emu10k1 *emu,
+ struct snd_emu10k1_fx8010_control_gpr __user *_gctl,
+ struct snd_emu10k1_fx8010_control_gpr *gctl,
+ int idx)
+{
+ struct snd_emu10k1_fx8010_control_old_gpr __user *octl;
+
+ if (emu->support_tlv)
+ return copy_to_user(&_gctl[idx], gctl, sizeof(*gctl));
+
+ octl = (struct snd_emu10k1_fx8010_control_old_gpr __user *)_gctl;
+ return copy_to_user(&octl[idx], gctl, sizeof(*octl));
+}
+
static int snd_emu10k1_verify_controls(struct snd_emu10k1 *emu,
struct snd_emu10k1_fx8010_code *icode)
{
unsigned int i;
struct snd_ctl_elem_id __user *_id;
struct snd_ctl_elem_id id;
- struct snd_emu10k1_fx8010_control_gpr __user *_gctl;
struct snd_emu10k1_fx8010_control_gpr *gctl;
int err;
@@ -676,9 +729,8 @@ static int snd_emu10k1_verify_controls(struct snd_emu10k1 *emu,
if (! gctl)
return -ENOMEM;
err = 0;
- for (i = 0, _gctl = icode->gpr_add_controls;
- i < icode->gpr_add_control_count; i++, _gctl++) {
- if (copy_from_user(gctl, _gctl, sizeof(*gctl))) {
+ for (i = 0; i < icode->gpr_add_control_count; i++) {
+ if (copy_gctl(emu, gctl, icode->gpr_add_controls, i)) {
err = -EFAULT;
goto __error;
}
@@ -697,10 +749,9 @@ static int snd_emu10k1_verify_controls(struct snd_emu10k1 *emu,
goto __error;
}
}
- for (i = 0, _gctl = icode->gpr_list_controls;
- i < icode->gpr_list_control_count; i++, _gctl++) {
+ for (i = 0; i < icode->gpr_list_control_count; i++) {
/* FIXME: we need to check the WRITE access */
- if (copy_from_user(gctl, _gctl, sizeof(*gctl))) {
+ if (copy_gctl(emu, gctl, icode->gpr_list_controls, i)) {
err = -EFAULT;
goto __error;
}
@@ -718,13 +769,14 @@ static void snd_emu10k1_ctl_private_free(struct snd_kcontrol *kctl)
kctl->private_value = 0;
list_del(&ctl->list);
kfree(ctl);
+ if (kctl->tlv.p)
+ kfree(kctl->tlv.p);
}
static int snd_emu10k1_add_controls(struct snd_emu10k1 *emu,
struct snd_emu10k1_fx8010_code *icode)
{
unsigned int i, j;
- struct snd_emu10k1_fx8010_control_gpr __user *_gctl;
struct snd_emu10k1_fx8010_control_gpr *gctl;
struct snd_emu10k1_fx8010_ctl *ctl, *nctl;
struct snd_kcontrol_new knew;
@@ -740,9 +792,8 @@ static int snd_emu10k1_add_controls(struct snd_emu10k1 *emu,
goto __error;
}
- for (i = 0, _gctl = icode->gpr_add_controls;
- i < icode->gpr_add_control_count; i++, _gctl++) {
- if (copy_from_user(gctl, _gctl, sizeof(*gctl))) {
+ for (i = 0; i < icode->gpr_add_control_count; i++) {
+ if (copy_gctl(emu, gctl, icode->gpr_add_controls, i)) {
err = -EFAULT;
goto __error;
}
@@ -763,11 +814,10 @@ static int snd_emu10k1_add_controls(struct snd_emu10k1 *emu,
knew.device = gctl->id.device;
knew.subdevice = gctl->id.subdevice;
knew.info = snd_emu10k1_gpr_ctl_info;
- if (gctl->tlv.p) {
- knew.tlv.p = gctl->tlv.p;
+ knew.tlv.p = copy_tlv(gctl->tlv);
+ if (knew.tlv.p)
knew.access = SNDRV_CTL_ELEM_ACCESS_READWRITE |
SNDRV_CTL_ELEM_ACCESS_TLV_READ;
- }
knew.get = snd_emu10k1_gpr_ctl_get;
knew.put = snd_emu10k1_gpr_ctl_put;
memset(nctl, 0, sizeof(*nctl));
@@ -785,12 +835,14 @@ static int snd_emu10k1_add_controls(struct snd_emu10k1 *emu,
ctl = kmalloc(sizeof(*ctl), GFP_KERNEL);
if (ctl == NULL) {
err = -ENOMEM;
+ kfree(knew.tlv.p);
goto __error;
}
knew.private_value = (unsigned long)ctl;
*ctl = *nctl;
if ((err = snd_ctl_add(emu->card, kctl = snd_ctl_new1(&knew, emu))) < 0) {
kfree(ctl);
+ kfree(knew.tlv.p);
goto __error;
}
kctl->private_free = snd_emu10k1_ctl_private_free;
@@ -841,7 +893,6 @@ static int snd_emu10k1_list_controls(struct snd_emu10k1 *emu,
unsigned int i = 0, j;
unsigned int total = 0;
struct snd_emu10k1_fx8010_control_gpr *gctl;
- struct snd_emu10k1_fx8010_control_gpr __user *_gctl;
struct snd_emu10k1_fx8010_ctl *ctl;
struct snd_ctl_elem_id *id;
struct list_head *list;
@@ -850,11 +901,11 @@ static int snd_emu10k1_list_controls(struct snd_emu10k1 *emu,
if (! gctl)
return -ENOMEM;
- _gctl = icode->gpr_list_controls;
list_for_each(list, &emu->fx8010.gpr_ctl) {
ctl = emu10k1_gpr_ctl(list);
total++;
- if (_gctl && i < icode->gpr_list_control_count) {
+ if (icode->gpr_list_controls &&
+ i < icode->gpr_list_control_count) {
memset(gctl, 0, sizeof(*gctl));
id = &ctl->kcontrol->id;
gctl->id.iface = id->iface;
@@ -871,11 +922,11 @@ static int snd_emu10k1_list_controls(struct snd_emu10k1 *emu,
gctl->min = ctl->min;
gctl->max = ctl->max;
gctl->translation = ctl->translation;
- if (copy_to_user(_gctl, gctl, sizeof(*gctl))) {
+ if (copy_gctl_to_user(emu, icode->gpr_list_controls,
+ gctl, i)) {
kfree(gctl);
return -EFAULT;
}
- _gctl++;
i++;
}
}
@@ -1026,7 +1077,7 @@ snd_emu10k1_init_mono_control(struct snd_emu10k1_fx8010_control_gpr *ctl,
ctl->gpr[0] = gpr + 0; ctl->value[0] = defval;
ctl->min = 0;
ctl->max = 100;
- ctl->tlv.p = snd_emu10k1_db_scale1;
+ ctl->tlv = snd_emu10k1_db_scale1;
ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;
}
@@ -1041,7 +1092,7 @@ snd_emu10k1_init_stereo_control(struct snd_emu10k1_fx8010_control_gpr *ctl,
ctl->gpr[1] = gpr + 1; ctl->value[1] = defval;
ctl->min = 0;
ctl->max = 100;
- ctl->tlv.p = snd_emu10k1_db_scale1;
+ ctl->tlv = snd_emu10k1_db_scale1;
ctl->translation = EMU10K1_GPR_TRANSLATION_TABLE100;
}
@@ -1566,7 +1617,9 @@ A_OP(icode, &ptr, iMAC0, A_GPR(var), A_GPR(var), A_GPR(vol), A_EXTIN(input))
seg = snd_enter_user();
icode->gpr_add_control_count = nctl;
icode->gpr_add_controls = (struct snd_emu10k1_fx8010_control_gpr __user *)controls;
+ emu->support_tlv = 1; /* support TLV */
err = snd_emu10k1_icode_poke(emu, icode);
+ emu->support_tlv = 0; /* clear again */
snd_leave_user(seg);
__err:
@@ -2183,7 +2236,9 @@ static int __devinit _snd_emu10k1_init_efx(struct snd_emu10k1 *emu)
seg = snd_enter_user();
icode->gpr_add_control_count = i;
icode->gpr_add_controls = (struct snd_emu10k1_fx8010_control_gpr __user *)controls;
+ emu->support_tlv = 1; /* support TLV */
err = snd_emu10k1_icode_poke(emu, icode);
+ emu->support_tlv = 0; /* clear again */
snd_leave_user(seg);
if (err >= 0)
err = snd_emu10k1_ipcm_poke(emu, ipcm);
@@ -2327,6 +2382,9 @@ static int snd_emu10k1_fx8010_ioctl(struct snd_hwdep * hw, struct file *file, un
int res;
switch (cmd) {
+ case SNDRV_EMU10K1_IOCTL_PVERSION:
+ emu->support_tlv = 1;
+ return put_user(SNDRV_EMU10K1_VERSION, (int __user *)argp);
case SNDRV_EMU10K1_IOCTL_INFO:
info = kmalloc(sizeof(*info), GFP_KERNEL);
if (!info)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 22:00:17 +0000