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-rw-r--r--drivers/accel/qaic/mhi_controller.c44
-rw-r--r--drivers/bus/mhi/host/pci_generic.c20
-rw-r--r--drivers/net/wireless/ath/ath11k/mhi.c4
-rw-r--r--drivers/net/wireless/ath/ath12k/mhi.c4
-rw-r--r--net/qrtr/mhi.c69
5 files changed, 60 insertions, 81 deletions
diff --git a/drivers/accel/qaic/mhi_controller.c b/drivers/accel/qaic/mhi_controller.c
index 13a14c6c6168..4d787f77ce41 100644
--- a/drivers/accel/qaic/mhi_controller.c
+++ b/drivers/accel/qaic/mhi_controller.c
@@ -39,7 +39,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -55,7 +54,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -71,7 +69,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -87,7 +84,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -103,7 +99,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -119,7 +114,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -135,7 +129,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -151,7 +144,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -167,7 +159,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -183,7 +174,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -199,7 +189,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -215,7 +204,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -231,7 +219,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -247,7 +234,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -263,7 +249,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -279,7 +264,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -295,7 +279,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -311,7 +294,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -327,7 +309,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -343,7 +324,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -359,7 +339,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -375,7 +354,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -391,7 +369,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -407,7 +384,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -423,7 +399,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -439,7 +414,6 @@ static const struct mhi_channel_config aic100_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = true,
.wake_capable = false,
},
};
@@ -458,7 +432,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -474,7 +447,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -490,7 +462,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -506,7 +477,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -522,7 +492,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -538,7 +507,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -554,7 +522,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -570,7 +537,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -586,7 +552,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -602,7 +567,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -618,7 +582,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -634,7 +597,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -650,7 +612,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -666,7 +627,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -682,7 +642,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -698,7 +657,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -714,7 +672,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
.wake_capable = false,
},
{
@@ -730,7 +687,6 @@ static const struct mhi_channel_config aic200_channels[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = true,
.wake_capable = false,
},
};
diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
index e3bc737313a2..0884a384b77f 100644
--- a/drivers/bus/mhi/host/pci_generic.c
+++ b/drivers/bus/mhi/host/pci_generic.c
@@ -94,22 +94,6 @@ struct mhi_pci_dev_info {
.doorbell_mode_switch = false, \
}
-#define MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(ch_num, ch_name, el_count, ev_ring) \
- { \
- .num = ch_num, \
- .name = ch_name, \
- .num_elements = el_count, \
- .event_ring = ev_ring, \
- .dir = DMA_FROM_DEVICE, \
- .ee_mask = BIT(MHI_EE_AMSS), \
- .pollcfg = 0, \
- .doorbell = MHI_DB_BRST_DISABLE, \
- .lpm_notify = false, \
- .offload_channel = false, \
- .doorbell_mode_switch = false, \
- .auto_queue = true, \
- }
-
#define MHI_EVENT_CONFIG_CTRL(ev_ring, el_count) \
{ \
.num_elements = el_count, \
@@ -329,7 +313,7 @@ static const struct mhi_channel_config modem_qcom_v1_mhi_channels[] = {
MHI_CHANNEL_CONFIG_UL(14, "QMI", 4, 0),
MHI_CHANNEL_CONFIG_DL(15, "QMI", 4, 0),
MHI_CHANNEL_CONFIG_UL(20, "IPCR", 8, 0),
- MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(21, "IPCR", 8, 0),
+ MHI_CHANNEL_CONFIG_DL(21, "IPCR", 8, 0),
MHI_CHANNEL_CONFIG_UL_FP(34, "FIREHOSE", 32, 0),
MHI_CHANNEL_CONFIG_DL_FP(35, "FIREHOSE", 32, 0),
MHI_CHANNEL_CONFIG_UL(46, "IP_SW0", 64, 2),
@@ -762,7 +746,7 @@ static const struct mhi_channel_config mhi_telit_fn980_hw_v1_channels[] = {
MHI_CHANNEL_CONFIG_UL(14, "QMI", 32, 0),
MHI_CHANNEL_CONFIG_DL(15, "QMI", 32, 0),
MHI_CHANNEL_CONFIG_UL(20, "IPCR", 16, 0),
- MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(21, "IPCR", 16, 0),
+ MHI_CHANNEL_CONFIG_DL(21, "IPCR", 16, 0),
MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0", 128, 1),
MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 2),
};
diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c
index acd76e9392d3..d2c44f7f9b62 100644
--- a/drivers/net/wireless/ath/ath11k/mhi.c
+++ b/drivers/net/wireless/ath/ath11k/mhi.c
@@ -34,7 +34,6 @@ static const struct mhi_channel_config ath11k_mhi_channels_qca6390[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
},
{
.num = 21,
@@ -48,7 +47,6 @@ static const struct mhi_channel_config ath11k_mhi_channels_qca6390[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = true,
},
};
@@ -99,7 +97,6 @@ static const struct mhi_channel_config ath11k_mhi_channels_qcn9074[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
},
{
.num = 21,
@@ -113,7 +110,6 @@ static const struct mhi_channel_config ath11k_mhi_channels_qcn9074[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = true,
},
};
diff --git a/drivers/net/wireless/ath/ath12k/mhi.c b/drivers/net/wireless/ath/ath12k/mhi.c
index 08f44baf182a..2dbdb95ae7be 100644
--- a/drivers/net/wireless/ath/ath12k/mhi.c
+++ b/drivers/net/wireless/ath/ath12k/mhi.c
@@ -31,7 +31,6 @@ static const struct mhi_channel_config ath12k_mhi_channels_qcn9274[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
},
{
.num = 21,
@@ -45,7 +44,6 @@ static const struct mhi_channel_config ath12k_mhi_channels_qcn9274[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = true,
},
};
@@ -96,7 +94,6 @@ static const struct mhi_channel_config ath12k_mhi_channels_wcn7850[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = false,
},
{
.num = 21,
@@ -110,7 +107,6 @@ static const struct mhi_channel_config ath12k_mhi_channels_wcn7850[] = {
.lpm_notify = false,
.offload_channel = false,
.doorbell_mode_switch = false,
- .auto_queue = true,
},
};
diff --git a/net/qrtr/mhi.c b/net/qrtr/mhi.c
index 69f53625a049..80e341d2f8a4 100644
--- a/net/qrtr/mhi.c
+++ b/net/qrtr/mhi.c
@@ -24,13 +24,25 @@ static void qcom_mhi_qrtr_dl_callback(struct mhi_device *mhi_dev,
struct qrtr_mhi_dev *qdev = dev_get_drvdata(&mhi_dev->dev);
int rc;
- if (!qdev || mhi_res->transaction_status)
+ if (!qdev || (mhi_res->transaction_status && mhi_res->transaction_status != -ENOTCONN))
return;
+ /* Channel got reset. So just free the buffer */
+ if (mhi_res->transaction_status == -ENOTCONN) {
+ devm_kfree(&mhi_dev->dev, mhi_res->buf_addr);
+ return;
+ }
+
rc = qrtr_endpoint_post(&qdev->ep, mhi_res->buf_addr,
mhi_res->bytes_xferd);
if (rc == -EINVAL)
dev_err(qdev->dev, "invalid ipcrouter packet\n");
+
+ /* Done with the buffer, now recycle it for future use */
+ rc = mhi_queue_buf(mhi_dev, DMA_FROM_DEVICE, mhi_res->buf_addr,
+ mhi_dev->mhi_cntrl->buffer_len, MHI_EOT);
+ if (rc)
+ dev_err(&mhi_dev->dev, "Failed to recycle the buffer: %d\n", rc);
}
/* From QRTR to MHI */
@@ -72,6 +84,29 @@ free_skb:
return rc;
}
+static int qcom_mhi_qrtr_queue_dl_buffers(struct mhi_device *mhi_dev)
+{
+ u32 free_desc;
+ void *buf;
+ int ret;
+
+ free_desc = mhi_get_free_desc_count(mhi_dev, DMA_FROM_DEVICE);
+ while (free_desc--) {
+ buf = devm_kmalloc(&mhi_dev->dev, mhi_dev->mhi_cntrl->buffer_len, GFP_KERNEL);
+ if (!buf)
+ return -ENOMEM;
+
+ ret = mhi_queue_buf(mhi_dev, DMA_FROM_DEVICE, buf, mhi_dev->mhi_cntrl->buffer_len,
+ MHI_EOT);
+ if (ret) {
+ dev_err(&mhi_dev->dev, "Failed to queue buffer: %d\n", ret);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
static int qcom_mhi_qrtr_probe(struct mhi_device *mhi_dev,
const struct mhi_device_id *id)
{
@@ -87,20 +122,30 @@ static int qcom_mhi_qrtr_probe(struct mhi_device *mhi_dev,
qdev->ep.xmit = qcom_mhi_qrtr_send;
dev_set_drvdata(&mhi_dev->dev, qdev);
- rc = qrtr_endpoint_register(&qdev->ep, QRTR_EP_NID_AUTO);
- if (rc)
- return rc;
/* start channels */
- rc = mhi_prepare_for_transfer_autoqueue(mhi_dev);
- if (rc) {
- qrtr_endpoint_unregister(&qdev->ep);
+ rc = mhi_prepare_for_transfer(mhi_dev);
+ if (rc)
return rc;
- }
+
+ rc = qrtr_endpoint_register(&qdev->ep, QRTR_EP_NID_AUTO);
+ if (rc)
+ goto err_unprepare;
+
+ rc = qcom_mhi_qrtr_queue_dl_buffers(mhi_dev);
+ if (rc)
+ goto err_unregister;
dev_dbg(qdev->dev, "Qualcomm MHI QRTR driver probed\n");
return 0;
+
+err_unregister:
+ qrtr_endpoint_unregister(&qdev->ep);
+err_unprepare:
+ mhi_unprepare_from_transfer(mhi_dev);
+
+ return rc;
}
static void qcom_mhi_qrtr_remove(struct mhi_device *mhi_dev)
@@ -151,11 +196,13 @@ static int __maybe_unused qcom_mhi_qrtr_pm_resume_early(struct device *dev)
if (state == MHI_STATE_M3)
return 0;
- rc = mhi_prepare_for_transfer_autoqueue(mhi_dev);
- if (rc)
+ rc = mhi_prepare_for_transfer(mhi_dev);
+ if (rc) {
dev_err(dev, "failed to prepare for autoqueue transfer %d\n", rc);
+ return rc;
+ }
- return rc;
+ return qcom_mhi_qrtr_queue_dl_buffers(mhi_dev);
}
static const struct dev_pm_ops qcom_mhi_qrtr_pm_ops = {
generated by cgit v1.2.3 (git 2.39.0) at 2026-04-10 06:22:12 +0300