At Wed, 17 Jan 2007 13:35:10 +0100,
私 wrote:
>
> At Wed, 17 Jan 2007 00:12:07 -0500,
> terminator356@xxxxxxxxxxxxxxxxxxxxx wrote:
> >
> > Hi, ld10k1 doesn't work, crashes. Lots of people saying it.
> > In the alsa-kernel/include emu10k1.h,
> > union {
> > snd_kcontrol_tlv_rw_t *c;
> > unsigned int *p;
> > } tlv;
> > was added to struct 'snd_emu10k1_fx8010_control_gpr'.
> > But alsa-lib/include/sound/emu10k1.h was not changed.
> > So I did this:
> > ...
> > unsigned int min; /* minimum range */
> > unsigned int max; /* maximum range */
> > unsigned int *p; // <----- ADDED THIS <----------------
> > unsigned int translation; /* translation type (EMU10K1_GPR_TRANSLATION*) */
> > } emu10k1_fx8010_control_gpr_t;
> >
> > which is in alsa-lib/include/sound/emu10k1.h
> >
> > For me, it fixes ld10k1. *p acts as a placeholder because it is useless
> > (at this point) to ld10k1.
> >
> > ----Can you tell me what those changes were for? What are *c and *p ? ---
>
> Well, this is an ABI breakage by introducing the TLV support.
> The tlv keeps the additional information such as dB range.
>
> James, do you have already a fix?
> I'm afraid that fixing this isn't so obvious and relatively
> complicated.
The patch below changes the driver to accept the old ABI as default,
then switch to the new ABI if EMU10K1_PVERSION ioctl is called.
Could you give it a try? If it works, I'll post a patch to ld10k1 to
switch to the new ABI.
Takashi
diff -r beb52b12c43f include/emu10k1.h
--- a/include/emu10k1.h Tue Jan 16 17:49:21 2007 +0100
+++ b/include/emu10k1.h Thu Jan 18 12:04:51 2007 +0100
@@ -1449,6 +1449,7 @@ struct snd_emu10k1 {
unsigned int tos_link: 1, /* tos link detected */
rear_ac97: 1, /* rear channels are on AC'97 */
enable_ir: 1;
+ unsigned int support_tlv :1;
/* Contains profile of card capabilities */
const struct snd_emu_chip_details *card_capabilities;
unsigned int audigy; /* is Audigy? */
@@ -1901,11 +1902,20 @@ struct snd_emu10k1_fx8010_control_gpr {
unsigned int value[32]; /* initial values */
unsigned int min; /* minimum range */
unsigned int max; /* maximum range */
- union {
- snd_kcontrol_tlv_rw_t *c;
- unsigned int *p;
- } tlv;
unsigned int translation; /* translation type (EMU10K1_GPR_TRANSLATION*) */
+ unsigned int *tlv;
+};
+
+/* old ABI without TLV support */
+struct snd_emu10k1_fx8010_control_old_gpr {
+ struct snd_ctl_elem_id id;
+ unsigned int vcount;
+ unsigned int count;
+ unsigned short gpr[32];
+ unsigned int value[32];
+ unsigned int min;
+ unsigned int max;
+ unsigned int translation;
};
struct snd_emu10k1_fx8010_code {
@@ -1956,6 +1966,8 @@ struct snd_emu10k1_fx8010_pcm_rec {
unsigned int res2; /* reserved */
};
+#define SNDRV_EMU10K1_VERSION SNDRV_PROTOCOL_VERSION(1, 0, 1)
+
#define SNDRV_EMU10K1_IOCTL_INFO _IOR ('H', 0x10, struct snd_emu10k1_fx8010_info)
#define SNDRV_EMU10K1_IOCTL_CODE_POKE _IOW ('H', 0x11, struct snd_emu10k1_fx8010_code)
#define SNDRV_EMU10K1_IOCTL_CODE_PEEK _IOWR('H', 0x12, struct snd_emu10k1_fx8010_code)
@@ -1964,6 +1976,7 @@ struct snd_emu10k1_fx8010_pcm_rec {
#define SNDRV_EMU10K1_IOCTL_TRAM_PEEK _IOWR('H', 0x22, struct snd_emu10k1_fx8010_tram)
#define SNDRV_EMU10K1_IOCTL_PCM_POKE _IOW ('H', 0x30, struct snd_emu10k1_fx8010_pcm_rec)
#define SNDRV_EMU10K1_IOCTL_PCM_PEEK _IOWR('H', 0x31, struct snd_emu10k1_fx8010_pcm_rec)
+#define SNDRV_EMU10K1_IOCTL_PVERSION _IOR ('H', 0x40, int)
#define SNDRV_EMU10K1_IOCTL_STOP _IO ('H', 0x80)
#define SNDRV_EMU10K1_IOCTL_CONTINUE _IO ('H', 0x81)
#define SNDRV_EMU10K1_IOCTL_ZERO_TRAM_COUNTER _IO ('H', 0x82)
diff -r beb52b12c43f pci/emu10k1/emufx.c
--- a/pci/emu10k1/emufx.c Tue Jan 16 17:49:21 2007 +0100
+++ b/pci/emu10k1/emufx.c Thu Jan 18 12:06:54 2007 +0100
@@ -655,13 +655,66 @@ snd_emu10k1_look_for_ctl(struct snd_emu1
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(s
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(s
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
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(stru
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(stru
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(stru
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(str
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(str
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(str
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
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 s
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_G
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_e
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(stru
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)
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