diff options
author | Ranjani Sridharan <ranjani.sridharan@linux.intel.com> | 2022-03-17 20:50:35 +0300 |
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committer | Mark Brown <broonie@kernel.org> | 2022-03-18 19:04:44 +0300 |
commit | 67ec2a091630c28ea8d05db2bd7178a05b04b7e6 (patch) | |
tree | d0e11fd92d4cda93ab72f103696be0e0f30a7ac9 /sound/soc/sof/ipc3-control.c | |
parent | 544ac8858f249950b4d99c68e538cdc07300528f (diff) | |
download | linux-67ec2a091630c28ea8d05db2bd7178a05b04b7e6.tar.xz |
ASoC: SOF: Add bytes_ext control IPC ops for IPC3
Define and set the get/put/volatile_get control IPC ops for byte
controls for IPC3.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20220317175044.1752400-11-ranjani.sridharan@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/ipc3-control.c')
-rw-r--r-- | sound/soc/sof/ipc3-control.c | 171 |
1 files changed, 171 insertions, 0 deletions
diff --git a/sound/soc/sof/ipc3-control.c b/sound/soc/sof/ipc3-control.c index df8e4df9663d..cdd5ad860a94 100644 --- a/sound/soc/sof/ipc3-control.c +++ b/sound/soc/sof/ipc3-control.c @@ -270,6 +270,174 @@ static int sof_ipc3_bytes_put(struct snd_sof_control *scontrol, return 0; } +static int sof_ipc3_bytes_ext_get(struct snd_sof_control *scontrol, + const unsigned int __user *binary_data, unsigned int size) +{ + struct snd_ctl_tlv __user *tlvd = (struct snd_ctl_tlv __user *)binary_data; + struct sof_ipc_ctrl_data *cdata = scontrol->ipc_control_data; + struct snd_soc_component *scomp = scontrol->scomp; + struct snd_ctl_tlv header; + size_t data_size; + + snd_sof_refresh_control(scontrol); + + /* + * Decrement the limit by ext bytes header size to + * ensure the user space buffer is not exceeded. + */ + if (size < sizeof(struct snd_ctl_tlv)) + return -ENOSPC; + + size -= sizeof(struct snd_ctl_tlv); + + /* set the ABI header values */ + cdata->data->magic = SOF_ABI_MAGIC; + cdata->data->abi = SOF_ABI_VERSION; + + /* check data size doesn't exceed max coming from topology */ + if (cdata->data->size > scontrol->max_size - sizeof(struct sof_abi_hdr)) { + dev_err_ratelimited(scomp->dev, "User data size %d exceeds max size %zu\n", + cdata->data->size, + scontrol->max_size - sizeof(struct sof_abi_hdr)); + return -EINVAL; + } + + data_size = cdata->data->size + sizeof(struct sof_abi_hdr); + + /* make sure we don't exceed size provided by user space for data */ + if (data_size > size) + return -ENOSPC; + + header.numid = cdata->cmd; + header.length = data_size; + if (copy_to_user(tlvd, &header, sizeof(struct snd_ctl_tlv))) + return -EFAULT; + + if (copy_to_user(tlvd->tlv, cdata->data, data_size)) + return -EFAULT; + + return 0; +} + +static int sof_ipc3_bytes_ext_put(struct snd_sof_control *scontrol, + const unsigned int __user *binary_data, + unsigned int size) +{ + const struct snd_ctl_tlv __user *tlvd = (const struct snd_ctl_tlv __user *)binary_data; + struct sof_ipc_ctrl_data *cdata = scontrol->ipc_control_data; + struct snd_soc_component *scomp = scontrol->scomp; + struct snd_ctl_tlv header; + + /* + * The beginning of bytes data contains a header from where + * the length (as bytes) is needed to know the correct copy + * length of data from tlvd->tlv. + */ + if (copy_from_user(&header, tlvd, sizeof(struct snd_ctl_tlv))) + return -EFAULT; + + /* make sure TLV info is consistent */ + if (header.length + sizeof(struct snd_ctl_tlv) > size) { + dev_err_ratelimited(scomp->dev, "Inconsistent TLV, data %d + header %zu > %d\n", + header.length, sizeof(struct snd_ctl_tlv), size); + return -EINVAL; + } + + /* be->max is coming from topology */ + if (header.length > scontrol->max_size) { + dev_err_ratelimited(scomp->dev, "Bytes data size %d exceeds max %zu\n", + header.length, scontrol->max_size); + return -EINVAL; + } + + /* Check that header id matches the command */ + if (header.numid != cdata->cmd) { + dev_err_ratelimited(scomp->dev, "Incorrect command for bytes put %d\n", + header.numid); + return -EINVAL; + } + + if (copy_from_user(cdata->data, tlvd->tlv, header.length)) + return -EFAULT; + + if (cdata->data->magic != SOF_ABI_MAGIC) { + dev_err_ratelimited(scomp->dev, "Wrong ABI magic 0x%08x\n", cdata->data->magic); + return -EINVAL; + } + + if (SOF_ABI_VERSION_INCOMPATIBLE(SOF_ABI_VERSION, cdata->data->abi)) { + dev_err_ratelimited(scomp->dev, "Incompatible ABI version 0x%08x\n", + cdata->data->abi); + return -EINVAL; + } + + /* be->max has been verified to be >= sizeof(struct sof_abi_hdr) */ + if (cdata->data->size > scontrol->max_size - sizeof(struct sof_abi_hdr)) { + dev_err_ratelimited(scomp->dev, "Mismatch in ABI data size (truncated?)\n"); + return -EINVAL; + } + + /* notify DSP of byte control updates */ + if (pm_runtime_active(scomp->dev)) + return snd_sof_ipc_set_get_comp_data(scontrol, true); + + return 0; +} + +static int sof_ipc3_bytes_ext_volatile_get(struct snd_sof_control *scontrol, + const unsigned int __user *binary_data, + unsigned int size) +{ + struct snd_ctl_tlv __user *tlvd = (struct snd_ctl_tlv __user *)binary_data; + struct sof_ipc_ctrl_data *cdata = scontrol->ipc_control_data; + struct snd_soc_component *scomp = scontrol->scomp; + struct snd_ctl_tlv header; + size_t data_size; + int ret; + + /* + * Decrement the limit by ext bytes header size to + * ensure the user space buffer is not exceeded. + */ + if (size < sizeof(struct snd_ctl_tlv)) + return -ENOSPC; + + size -= sizeof(struct snd_ctl_tlv); + + /* set the ABI header values */ + cdata->data->magic = SOF_ABI_MAGIC; + cdata->data->abi = SOF_ABI_VERSION; + + /* get all the component data from DSP */ + ret = snd_sof_ipc_set_get_comp_data(scontrol, false); + if (ret < 0) + return ret; + + /* check data size doesn't exceed max coming from topology */ + if (cdata->data->size > scontrol->max_size - sizeof(struct sof_abi_hdr)) { + dev_err_ratelimited(scomp->dev, "User data size %d exceeds max size %zu\n", + cdata->data->size, + scontrol->max_size - sizeof(struct sof_abi_hdr)); + return -EINVAL; + } + + data_size = cdata->data->size + sizeof(struct sof_abi_hdr); + + /* make sure we don't exceed size provided by user space for data */ + if (data_size > size) + return -ENOSPC; + + header.numid = cdata->cmd; + header.length = data_size; + if (copy_to_user(tlvd, &header, sizeof(struct snd_ctl_tlv))) + return -EFAULT; + + if (copy_to_user(tlvd->tlv, cdata->data, data_size)) + return -EFAULT; + + return ret; +} + static void snd_sof_update_control(struct snd_sof_control *scontrol, struct sof_ipc_ctrl_data *cdata) { @@ -419,5 +587,8 @@ const struct sof_ipc_tplg_control_ops tplg_ipc3_control_ops = { .enum_get = sof_ipc3_enum_get, .bytes_put = sof_ipc3_bytes_put, .bytes_get = sof_ipc3_bytes_get, + .bytes_ext_put = sof_ipc3_bytes_ext_put, + .bytes_ext_get = sof_ipc3_bytes_ext_get, + .bytes_ext_volatile_get = sof_ipc3_bytes_ext_volatile_get, .update = sof_ipc3_control_update, }; |