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| author | Loic Poulain <loic.poulain@linaro.org> | 2021-07-16 13:21:06 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-21 13:16:18 +0200 |
| commit | b8a97f2a65388394f433bf0730293a94f7d49046 (patch) | |
| tree | b1cd3d2b777429d1c53050abebf94d29a02657e3 /drivers/bus/mhi/pci_generic.c | |
| parent | 546362a9ef2ef40b57c6605f14e88ced507f8dd0 (diff) | |
| download | linux-b8a97f2a65388394f433bf0730293a94f7d49046.tar.gz linux-b8a97f2a65388394f433bf0730293a94f7d49046.tar.bz2 linux-b8a97f2a65388394f433bf0730293a94f7d49046.zip | |
bus: mhi: pci_generic: Fix inbound IPCR channel
The qrtr-mhi client driver assumes that inbound buffers are
automatically allocated and queued by the MHI core, but this
doesn't happen for mhi pci devices since IPCR inbound channel is
not flagged with auto_queue, causing unusable IPCR (qrtr)
feature. Fix that.
Link: https://lore.kernel.org/r/1625736749-24947-1-git-send-email-loic.poulain@linaro.org
[mani: fixed a spelling mistake in commit description]
Fixes: 855a70c12021 ("bus: mhi: Add MHI PCI support for WWAN modems")
Cc: stable@vger.kernel.org #5.10
Reviewed-by: Hemant kumar <hemantk@codeaurora.org>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20210716075106.49938-4-manivannan.sadhasivam@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/bus/mhi/pci_generic.c')
| -rw-r--r-- | drivers/bus/mhi/pci_generic.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c index 3396cb30ebec..4dd1077354af 100644 --- a/drivers/bus/mhi/pci_generic.c +++ b/drivers/bus/mhi/pci_generic.c @@ -75,6 +75,22 @@ 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, \ @@ -213,7 +229,7 @@ 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(21, "IPCR", 8, 0), + MHI_CHANNEL_CONFIG_DL_AUTOQUEUE(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_HW_UL(100, "IP_HW0", 128, 2), |