diff options
| author | Loic Poulain <loic.poulain@linaro.org> | 2020-12-17 12:54:02 +0100 |
|---|---|---|
| committer | Loic Poulain <loic.poulain@linaro.org> | 2021-02-02 17:02:26 +0100 |
| commit | ec047aed98e0acac78dda324b2a19d77ee916e1e (patch) | |
| tree | eb065ed9314d8b55c28285abb453bce03018d966 /drivers/bus/mhi/pci_generic.c | |
| parent | 608779e34b4f2ab4fb663ec3351437b6555aec6a (diff) | |
mhi: pci_generic: Fix shared MSI vector support
When a shared MSI vector must be used (e.g. when VTd is disabled on
x86_64), each event MSI vector must be set to the shared vector idx.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Diffstat (limited to 'drivers/bus/mhi/pci_generic.c')
| -rw-r--r-- | drivers/bus/mhi/pci_generic.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c index 86ff0c3ac04f..5b3a23a40040 100644 --- a/drivers/bus/mhi/pci_generic.c +++ b/drivers/bus/mhi/pci_generic.c @@ -154,7 +154,7 @@ static const struct mhi_channel_config modem_qcom_v1_mhi_channels[] = { MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0", 128, 3), }; -static const struct mhi_event_config modem_qcom_v1_mhi_events[] = { +static struct mhi_event_config modem_qcom_v1_mhi_events[] = { /* first ring is control+data ring */ MHI_EVENT_CONFIG_CTRL(0), /* DIAG dedicated event ring */ @@ -164,7 +164,7 @@ static const struct mhi_event_config modem_qcom_v1_mhi_events[] = { MHI_EVENT_CONFIG_HW_DATA(3, 101) }; -static const struct mhi_controller_config modem_qcom_v1_mhiv_config = { +static struct mhi_controller_config modem_qcom_v1_mhiv_config = { .max_channels = 128, .timeout_ms = 8000, .num_channels = ARRAY_SIZE(modem_qcom_v1_mhi_channels), @@ -295,8 +295,12 @@ static int mhi_pci_get_irqs(struct mhi_controller *mhi_cntrl, } if (nr_vectors < mhi_cntrl->nr_irqs) { - dev_warn(&pdev->dev, "Not enough MSI vectors (%d/%d), use shared MSI\n", - nr_vectors, mhi_cntrl_config->num_events); + dev_warn(&pdev->dev, "using shared MSI\n"); + + /* Patch msi vectors, use only one (shared) */ + for (i = 0; i < mhi_cntrl_config->num_events; i++) + mhi_cntrl_config->event_cfg[i].irq = 0; + mhi_cntrl->nr_irqs = 1; } irq = devm_kcalloc(&pdev->dev, mhi_cntrl->nr_irqs, sizeof(int), GFP_KERNEL); |