]> asedeno.scripts.mit.edu Git - linux.git/blobdiff - sound/core/pcm_compat.c
Merge tag 'arc-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
[linux.git] / sound / core / pcm_compat.c
index 6f9003b1869a72e3c2910f1fc7eaa78da30c7e4f..967c689fb8da7ec595d210e17ac6e1c435f4366b 100644 (file)
@@ -83,19 +83,6 @@ struct snd_pcm_sw_params32 {
        unsigned char reserved[56];
 };
 
-/* recalcuate the boundary within 32bit */
-static snd_pcm_uframes_t recalculate_boundary(struct snd_pcm_runtime *runtime)
-{
-       snd_pcm_uframes_t boundary;
-
-       if (! runtime->buffer_size)
-               return 0;
-       boundary = runtime->buffer_size;
-       while (boundary * 2 <= 0x7fffffffUL - runtime->buffer_size)
-               boundary *= 2;
-       return boundary;
-}
-
 static int snd_pcm_ioctl_sw_params_compat(struct snd_pcm_substream *substream,
                                          struct snd_pcm_sw_params32 __user *src)
 {
@@ -168,10 +155,13 @@ static int snd_pcm_channel_info_user(struct snd_pcm_substream *substream,
        snd_pcm_channel_info_user(s, p)
 #endif /* CONFIG_X86_X32 */
 
-struct snd_pcm_status32 {
+struct compat_snd_pcm_status64 {
        s32 state;
-       struct compat_timespec trigger_tstamp;
-       struct compat_timespec tstamp;
+       u8 rsvd[4]; /* alignment */
+       s64 trigger_tstamp_sec;
+       s64 trigger_tstamp_nsec;
+       s64 tstamp_sec;
+       s64 tstamp_nsec;
        u32 appl_ptr;
        u32 hw_ptr;
        s32 delay;
@@ -180,85 +170,24 @@ struct snd_pcm_status32 {
        u32 overrange;
        s32 suspended_state;
        u32 audio_tstamp_data;
-       struct compat_timespec audio_tstamp;
-       struct compat_timespec driver_tstamp;
+       s64 audio_tstamp_sec;
+       s64 audio_tstamp_nsec;
+       s64 driver_tstamp_sec;
+       s64 driver_tstamp_nsec;
        u32 audio_tstamp_accuracy;
-       unsigned char reserved[52-2*sizeof(struct compat_timespec)];
-} __attribute__((packed));
-
-
-static int snd_pcm_status_user_compat(struct snd_pcm_substream *substream,
-                                     struct snd_pcm_status32 __user *src,
-                                     bool ext)
-{
-       struct snd_pcm_status status;
-       int err;
-
-       memset(&status, 0, sizeof(status));
-       /*
-        * with extension, parameters are read/write,
-        * get audio_tstamp_data from user,
-        * ignore rest of status structure
-        */
-       if (ext && get_user(status.audio_tstamp_data,
-                               (u32 __user *)(&src->audio_tstamp_data)))
-               return -EFAULT;
-       err = snd_pcm_status(substream, &status);
-       if (err < 0)
-               return err;
-
-       if (clear_user(src, sizeof(*src)))
-               return -EFAULT;
-       if (put_user(status.state, &src->state) ||
-           compat_put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
-           compat_put_timespec(&status.tstamp, &src->tstamp) ||
-           put_user(status.appl_ptr, &src->appl_ptr) ||
-           put_user(status.hw_ptr, &src->hw_ptr) ||
-           put_user(status.delay, &src->delay) ||
-           put_user(status.avail, &src->avail) ||
-           put_user(status.avail_max, &src->avail_max) ||
-           put_user(status.overrange, &src->overrange) ||
-           put_user(status.suspended_state, &src->suspended_state) ||
-           put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
-           compat_put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
-           compat_put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
-           put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
-               return -EFAULT;
-
-       return err;
-}
-
-#ifdef CONFIG_X86_X32
-/* X32 ABI has 64bit timespec and 64bit alignment */
-struct snd_pcm_status_x32 {
-       s32 state;
-       u32 rsvd; /* alignment */
-       struct timespec trigger_tstamp;
-       struct timespec tstamp;
-       u32 appl_ptr;
-       u32 hw_ptr;
-       s32 delay;
-       u32 avail;
-       u32 avail_max;
-       u32 overrange;
-       s32 suspended_state;
-       u32 audio_tstamp_data;
-       struct timespec audio_tstamp;
-       struct timespec driver_tstamp;
-       u32 audio_tstamp_accuracy;
-       unsigned char reserved[52-2*sizeof(struct timespec)];
+       unsigned char reserved[52-4*sizeof(s64)];
 } __packed;
 
-#define put_timespec(src, dst) copy_to_user(dst, src, sizeof(*dst))
-
-static int snd_pcm_status_user_x32(struct snd_pcm_substream *substream,
-                                  struct snd_pcm_status_x32 __user *src,
-                                  bool ext)
+static int snd_pcm_status_user_compat64(struct snd_pcm_substream *substream,
+                                       struct compat_snd_pcm_status64 __user *src,
+                                       bool ext)
 {
-       struct snd_pcm_status status;
+       struct snd_pcm_status64 status;
+       struct compat_snd_pcm_status64 compat_status64;
        int err;
 
        memset(&status, 0, sizeof(status));
+       memset(&compat_status64, 0, sizeof(compat_status64));
        /*
         * with extension, parameters are read/write,
         * get audio_tstamp_data from user,
@@ -267,31 +196,39 @@ static int snd_pcm_status_user_x32(struct snd_pcm_substream *substream,
        if (ext && get_user(status.audio_tstamp_data,
                                (u32 __user *)(&src->audio_tstamp_data)))
                return -EFAULT;
-       err = snd_pcm_status(substream, &status);
+       err = snd_pcm_status64(substream, &status);
        if (err < 0)
                return err;
 
        if (clear_user(src, sizeof(*src)))
                return -EFAULT;
-       if (put_user(status.state, &src->state) ||
-           put_timespec(&status.trigger_tstamp, &src->trigger_tstamp) ||
-           put_timespec(&status.tstamp, &src->tstamp) ||
-           put_user(status.appl_ptr, &src->appl_ptr) ||
-           put_user(status.hw_ptr, &src->hw_ptr) ||
-           put_user(status.delay, &src->delay) ||
-           put_user(status.avail, &src->avail) ||
-           put_user(status.avail_max, &src->avail_max) ||
-           put_user(status.overrange, &src->overrange) ||
-           put_user(status.suspended_state, &src->suspended_state) ||
-           put_user(status.audio_tstamp_data, &src->audio_tstamp_data) ||
-           put_timespec(&status.audio_tstamp, &src->audio_tstamp) ||
-           put_timespec(&status.driver_tstamp, &src->driver_tstamp) ||
-           put_user(status.audio_tstamp_accuracy, &src->audio_tstamp_accuracy))
+
+       compat_status64 = (struct compat_snd_pcm_status64) {
+               .state = status.state,
+               .trigger_tstamp_sec = status.trigger_tstamp_sec,
+               .trigger_tstamp_nsec = status.trigger_tstamp_nsec,
+               .tstamp_sec = status.tstamp_sec,
+               .tstamp_nsec = status.tstamp_nsec,
+               .appl_ptr = status.appl_ptr,
+               .hw_ptr = status.hw_ptr,
+               .delay = status.delay,
+               .avail = status.avail,
+               .avail_max = status.avail_max,
+               .overrange = status.overrange,
+               .suspended_state = status.suspended_state,
+               .audio_tstamp_data = status.audio_tstamp_data,
+               .audio_tstamp_sec = status.audio_tstamp_sec,
+               .audio_tstamp_nsec = status.audio_tstamp_nsec,
+               .driver_tstamp_sec = status.audio_tstamp_sec,
+               .driver_tstamp_nsec = status.audio_tstamp_nsec,
+               .audio_tstamp_accuracy = status.audio_tstamp_accuracy,
+       };
+
+       if (copy_to_user(src, &compat_status64, sizeof(compat_status64)))
                return -EFAULT;
 
        return err;
 }
-#endif /* CONFIG_X86_X32 */
 
 /* both for HW_PARAMS and HW_REFINE */
 static int snd_pcm_ioctl_hw_params_compat(struct snd_pcm_substream *substream,
@@ -436,91 +373,6 @@ static int snd_pcm_ioctl_xfern_compat(struct snd_pcm_substream *substream,
        return err;
 }
 
-
-struct snd_pcm_mmap_status32 {
-       s32 state;
-       s32 pad1;
-       u32 hw_ptr;
-       struct compat_timespec tstamp;
-       s32 suspended_state;
-       struct compat_timespec audio_tstamp;
-} __attribute__((packed));
-
-struct snd_pcm_mmap_control32 {
-       u32 appl_ptr;
-       u32 avail_min;
-};
-
-struct snd_pcm_sync_ptr32 {
-       u32 flags;
-       union {
-               struct snd_pcm_mmap_status32 status;
-               unsigned char reserved[64];
-       } s;
-       union {
-               struct snd_pcm_mmap_control32 control;
-               unsigned char reserved[64];
-       } c;
-} __attribute__((packed));
-
-static int snd_pcm_ioctl_sync_ptr_compat(struct snd_pcm_substream *substream,
-                                        struct snd_pcm_sync_ptr32 __user *src)
-{
-       struct snd_pcm_runtime *runtime = substream->runtime;
-       volatile struct snd_pcm_mmap_status *status;
-       volatile struct snd_pcm_mmap_control *control;
-       u32 sflags;
-       struct snd_pcm_mmap_control scontrol;
-       struct snd_pcm_mmap_status sstatus;
-       snd_pcm_uframes_t boundary;
-       int err;
-
-       if (snd_BUG_ON(!runtime))
-               return -EINVAL;
-
-       if (get_user(sflags, &src->flags) ||
-           get_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
-           get_user(scontrol.avail_min, &src->c.control.avail_min))
-               return -EFAULT;
-       if (sflags & SNDRV_PCM_SYNC_PTR_HWSYNC) {
-               err = snd_pcm_hwsync(substream);
-               if (err < 0)
-                       return err;
-       }
-       status = runtime->status;
-       control = runtime->control;
-       boundary = recalculate_boundary(runtime);
-       if (! boundary)
-               boundary = 0x7fffffff;
-       snd_pcm_stream_lock_irq(substream);
-       /* FIXME: we should consider the boundary for the sync from app */
-       if (!(sflags & SNDRV_PCM_SYNC_PTR_APPL))
-               control->appl_ptr = scontrol.appl_ptr;
-       else
-               scontrol.appl_ptr = control->appl_ptr % boundary;
-       if (!(sflags & SNDRV_PCM_SYNC_PTR_AVAIL_MIN))
-               control->avail_min = scontrol.avail_min;
-       else
-               scontrol.avail_min = control->avail_min;
-       sstatus.state = status->state;
-       sstatus.hw_ptr = status->hw_ptr % boundary;
-       sstatus.tstamp = status->tstamp;
-       sstatus.suspended_state = status->suspended_state;
-       sstatus.audio_tstamp = status->audio_tstamp;
-       snd_pcm_stream_unlock_irq(substream);
-       if (put_user(sstatus.state, &src->s.status.state) ||
-           put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
-           compat_put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
-           put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
-           compat_put_timespec(&sstatus.audio_tstamp,
-                   &src->s.status.audio_tstamp) ||
-           put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
-           put_user(scontrol.avail_min, &src->c.control.avail_min))
-               return -EFAULT;
-
-       return 0;
-}
-
 #ifdef CONFIG_X86_X32
 /* X32 ABI has 64bit timespec and 64bit alignment */
 struct snd_pcm_mmap_status_x32 {
@@ -528,10 +380,12 @@ struct snd_pcm_mmap_status_x32 {
        s32 pad1;
        u32 hw_ptr;
        u32 pad2; /* alignment */
-       struct timespec tstamp;
+       s64 tstamp_sec;
+       s64 tstamp_nsec;
        s32 suspended_state;
        s32 pad3;
-       struct timespec audio_tstamp;
+       s64 audio_tstamp_sec;
+       s64 audio_tstamp_nsec;
 } __packed;
 
 struct snd_pcm_mmap_control_x32 {
@@ -599,9 +453,11 @@ static int snd_pcm_ioctl_sync_ptr_x32(struct snd_pcm_substream *substream,
        snd_pcm_stream_unlock_irq(substream);
        if (put_user(sstatus.state, &src->s.status.state) ||
            put_user(sstatus.hw_ptr, &src->s.status.hw_ptr) ||
-           put_timespec(&sstatus.tstamp, &src->s.status.tstamp) ||
+           put_user(sstatus.tstamp.tv_sec, &src->s.status.tstamp_sec) ||
+           put_user(sstatus.tstamp.tv_nsec, &src->s.status.tstamp_nsec) ||
            put_user(sstatus.suspended_state, &src->s.status.suspended_state) ||
-           put_timespec(&sstatus.audio_tstamp, &src->s.status.audio_tstamp) ||
+           put_user(sstatus.audio_tstamp.tv_sec, &src->s.status.audio_tstamp_sec) ||
+           put_user(sstatus.audio_tstamp.tv_nsec, &src->s.status.audio_tstamp_nsec) ||
            put_user(scontrol.appl_ptr, &src->c.control.appl_ptr) ||
            put_user(scontrol.avail_min, &src->c.control.avail_min))
                return -EFAULT;
@@ -616,8 +472,8 @@ enum {
        SNDRV_PCM_IOCTL_HW_REFINE32 = _IOWR('A', 0x10, struct snd_pcm_hw_params32),
        SNDRV_PCM_IOCTL_HW_PARAMS32 = _IOWR('A', 0x11, struct snd_pcm_hw_params32),
        SNDRV_PCM_IOCTL_SW_PARAMS32 = _IOWR('A', 0x13, struct snd_pcm_sw_params32),
-       SNDRV_PCM_IOCTL_STATUS32 = _IOR('A', 0x20, struct snd_pcm_status32),
-       SNDRV_PCM_IOCTL_STATUS_EXT32 = _IOWR('A', 0x24, struct snd_pcm_status32),
+       SNDRV_PCM_IOCTL_STATUS_COMPAT32 = _IOR('A', 0x20, struct snd_pcm_status32),
+       SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32 = _IOWR('A', 0x24, struct snd_pcm_status32),
        SNDRV_PCM_IOCTL_DELAY32 = _IOR('A', 0x21, s32),
        SNDRV_PCM_IOCTL_CHANNEL_INFO32 = _IOR('A', 0x32, struct snd_pcm_channel_info32),
        SNDRV_PCM_IOCTL_REWIND32 = _IOW('A', 0x46, u32),
@@ -626,11 +482,10 @@ enum {
        SNDRV_PCM_IOCTL_READI_FRAMES32 = _IOR('A', 0x51, struct snd_xferi32),
        SNDRV_PCM_IOCTL_WRITEN_FRAMES32 = _IOW('A', 0x52, struct snd_xfern32),
        SNDRV_PCM_IOCTL_READN_FRAMES32 = _IOR('A', 0x53, struct snd_xfern32),
-       SNDRV_PCM_IOCTL_SYNC_PTR32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr32),
+       SNDRV_PCM_IOCTL_STATUS_COMPAT64 = _IOR('A', 0x20, struct compat_snd_pcm_status64),
+       SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64 = _IOWR('A', 0x24, struct compat_snd_pcm_status64),
 #ifdef CONFIG_X86_X32
        SNDRV_PCM_IOCTL_CHANNEL_INFO_X32 = _IOR('A', 0x32, struct snd_pcm_channel_info),
-       SNDRV_PCM_IOCTL_STATUS_X32 = _IOR('A', 0x20, struct snd_pcm_status_x32),
-       SNDRV_PCM_IOCTL_STATUS_EXT_X32 = _IOWR('A', 0x24, struct snd_pcm_status_x32),
        SNDRV_PCM_IOCTL_SYNC_PTR_X32 = _IOWR('A', 0x23, struct snd_pcm_sync_ptr_x32),
 #endif /* CONFIG_X86_X32 */
 };
@@ -650,8 +505,8 @@ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned l
 
        /*
         * When PCM is used on 32bit mode, we need to disable
-        * mmap of PCM status/control records because of the size
-        * incompatibility.
+        * mmap of the old PCM status/control records because
+        * of the size incompatibility.
         */
        pcm_file->no_compat_mmap = 1;
 
@@ -673,6 +528,13 @@ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned l
        case SNDRV_PCM_IOCTL_XRUN:
        case SNDRV_PCM_IOCTL_LINK:
        case SNDRV_PCM_IOCTL_UNLINK:
+       case __SNDRV_PCM_IOCTL_SYNC_PTR32:
+               return snd_pcm_common_ioctl(file, substream, cmd, argp);
+       case __SNDRV_PCM_IOCTL_SYNC_PTR64:
+#ifdef CONFIG_X86_X32
+               if (in_x32_syscall())
+                       return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
+#endif /* CONFIG_X86_X32 */
                return snd_pcm_common_ioctl(file, substream, cmd, argp);
        case SNDRV_PCM_IOCTL_HW_REFINE32:
                return snd_pcm_ioctl_hw_params_compat(substream, 1, argp);
@@ -680,12 +542,10 @@ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned l
                return snd_pcm_ioctl_hw_params_compat(substream, 0, argp);
        case SNDRV_PCM_IOCTL_SW_PARAMS32:
                return snd_pcm_ioctl_sw_params_compat(substream, argp);
-       case SNDRV_PCM_IOCTL_STATUS32:
-               return snd_pcm_status_user_compat(substream, argp, false);
-       case SNDRV_PCM_IOCTL_STATUS_EXT32:
-               return snd_pcm_status_user_compat(substream, argp, true);
-       case SNDRV_PCM_IOCTL_SYNC_PTR32:
-               return snd_pcm_ioctl_sync_ptr_compat(substream, argp);
+       case SNDRV_PCM_IOCTL_STATUS_COMPAT32:
+               return snd_pcm_status_user32(substream, argp, false);
+       case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT32:
+               return snd_pcm_status_user32(substream, argp, true);
        case SNDRV_PCM_IOCTL_CHANNEL_INFO32:
                return snd_pcm_ioctl_channel_info_compat(substream, argp);
        case SNDRV_PCM_IOCTL_WRITEI_FRAMES32:
@@ -702,13 +562,11 @@ static long snd_pcm_ioctl_compat(struct file *file, unsigned int cmd, unsigned l
                return snd_pcm_ioctl_rewind_compat(substream, argp);
        case SNDRV_PCM_IOCTL_FORWARD32:
                return snd_pcm_ioctl_forward_compat(substream, argp);
+       case SNDRV_PCM_IOCTL_STATUS_COMPAT64:
+               return snd_pcm_status_user_compat64(substream, argp, false);
+       case SNDRV_PCM_IOCTL_STATUS_EXT_COMPAT64:
+               return snd_pcm_status_user_compat64(substream, argp, true);
 #ifdef CONFIG_X86_X32
-       case SNDRV_PCM_IOCTL_STATUS_X32:
-               return snd_pcm_status_user_x32(substream, argp, false);
-       case SNDRV_PCM_IOCTL_STATUS_EXT_X32:
-               return snd_pcm_status_user_x32(substream, argp, true);
-       case SNDRV_PCM_IOCTL_SYNC_PTR_X32:
-               return snd_pcm_ioctl_sync_ptr_x32(substream, argp);
        case SNDRV_PCM_IOCTL_CHANNEL_INFO_X32:
                return snd_pcm_ioctl_channel_info_x32(substream, argp);
 #endif /* CONFIG_X86_X32 */