diff options
| author | Loic Poulain <loic.poulain@linaro.org> | 2021-01-05 17:44:36 +0100 |
|---|---|---|
| committer | Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> | 2021-01-06 18:47:58 +0530 |
| commit | e6ca384d3b09258395b46b1c4d37a977937a67ca (patch) | |
| tree | 943d2dfbbc27d4f71bb42e9d37731e564ae1415d | |
| parent | a7209009f885d5ce5841227d845b89e38e87d1ca (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>
Reviewed-by: Hemant Kumar<hemantk@codeaurora.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
| -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 c13de0f2053e..444693e3fd72 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); |