linux-kernel - Re: [PATCH] bus: mhi: pci_generic: Introduce Foxconn T99W175 support

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Date:   Wed, 7 Apr 2021 16:16:03 +0800
From:   Jarvis Jiang <jarvis.w.jiang@...il.com>
To:     Manivannan Sadhasivam <mani@...nel.org>
Cc:     hemantk@...eaurora.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, cchen50@...ovo.com,
        mpearson@...ovo.com
Subject: Re: [PATCH] bus: mhi: pci_generic: Introduce Foxconn T99W175 support

On Wed, Apr 7, 2021 at 2:46 PM Manivannan Sadhasivam <mani@...nel.org> wrote:
>
> On Tue, Apr 06, 2021 at 07:50:29PM -0700, Jarvis Jiang wrote:
> > Add support for T99W175 modems, this modem series is based on SDX55
> > qcom chip. The modem is mainly based on MBIM protocol for both the
> > data and control path.
> >
>
> List the modems whose support is being added.

Ok, I will add the modems supported in the next iteration.

>
> > This patch was tested with Ubuntu 20.04 X86_64 PC as host
> >
> > Signed-off-by: Jarvis Jiang <jarvis.w.jiang@...il.com>
> > ---
> >  drivers/bus/mhi/pci_generic.c | 58 +++++++++++++++++++++++++++++++++++
> >  1 file changed, 58 insertions(+)
> >
> > diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c
> > index 5cf44bcfe040..3e396c65a758 100644
> > --- a/drivers/bus/mhi/pci_generic.c
> > +++ b/drivers/bus/mhi/pci_generic.c
> > @@ -260,6 +260,52 @@ static const struct mhi_pci_dev_info mhi_quectel_em1xx_info = {
> >       .dma_data_width = 32
> >  };
> >
> > +static const struct mhi_channel_config mhi_foxconn_sdx55_channels[] = {
> > +     MHI_CHANNEL_CONFIG_UL(0, "LOOPBACK", 32, 0),
> > +     MHI_CHANNEL_CONFIG_DL(1, "LOOPBACK", 32, 0),
> > +     MHI_CHANNEL_CONFIG_UL(4, "DIAG", 32, 1),
> > +     MHI_CHANNEL_CONFIG_DL(5, "DIAG", 32, 1),
> > +     MHI_CHANNEL_CONFIG_UL(12, "MBIM", 32, 0),
> > +     MHI_CHANNEL_CONFIG_DL(13, "MBIM", 32, 0),
> > +     MHI_CHANNEL_CONFIG_UL(14, "QMI", 32, 0),
> > +     MHI_CHANNEL_CONFIG_DL(15, "QMI", 32, 0),
> > +     MHI_CHANNEL_CONFIG_UL(16, "QMI1", 32, 0),
> > +     MHI_CHANNEL_CONFIG_DL(17, "QMI1", 32, 0),
> > +     MHI_CHANNEL_CONFIG_UL(18, "IP_CTRL", 32, 0),
> > +     MHI_CHANNEL_CONFIG_DL(19, "IP_CTRL", 32, 0),
> > +     MHI_CHANNEL_CONFIG_UL(20, "IPCR", 32, 0),
> > +     MHI_CHANNEL_CONFIG_DL(21, "IPCR", 32, 0),
> > +     MHI_CHANNEL_CONFIG_UL(32, "AT", 32, 0),
> > +     MHI_CHANNEL_CONFIG_DL(33, "AT", 32, 0),
> > +     MHI_CHANNEL_CONFIG_HW_UL(100, "IP_HW0_MBIM", 128, 2),
> > +     MHI_CHANNEL_CONFIG_HW_DL(101, "IP_HW0_MBIM", 128, 3),
> > +};
> > +
> > +static struct mhi_event_config mhi_foxconn_sdx55_events[] = {
> > +     MHI_EVENT_CONFIG_CTRL(0, 128),
> > +     MHI_EVENT_CONFIG_DATA(1, 128),
> > +     MHI_EVENT_CONFIG_HW_DATA(2, 1024, 100),
> > +     MHI_EVENT_CONFIG_HW_DATA(3, 1024, 101)
> > +};
> > +
> > +static struct mhi_controller_config modem_foxconn_sdx55_config = {
> > +     .max_channels = 128,
> > +     .timeout_ms = 20000,
> > +     .num_channels = ARRAY_SIZE(mhi_foxconn_sdx55_channels),
> > +     .ch_cfg = mhi_foxconn_sdx55_channels,
> > +     .num_events = ARRAY_SIZE(mhi_foxconn_sdx55_events),
> > +     .event_cfg = mhi_foxconn_sdx55_events,
> > +};
> > +
> > +static const struct mhi_pci_dev_info mhi_foxconn_sdx55_info = {
> > +     .name = "foxconn-sdx55",
> > +     .fw = "qcom/sdx55m/sbl1.mbn",
> > +     .edl = "qcom/sdx55m/edl.mbn",
> > +     .config = &modem_foxconn_sdx55_config,
> > +     .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
> > +     .dma_data_width = 32
> > +};
> > +
> >  static const struct pci_device_id mhi_pci_id_table[] = {
> >       { PCI_DEVICE(PCI_VENDOR_ID_QCOM, 0x0306),
> >               .driver_data = (kernel_ulong_t) &mhi_qcom_sdx55_info },
> > @@ -269,6 +315,18 @@ static const struct pci_device_id mhi_pci_id_table[] = {
> >               .driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
> >       { PCI_DEVICE(0x1eac, 0x1002), /* EM160R-GL (sdx24) */
> >               .driver_data = (kernel_ulong_t) &mhi_quectel_em1xx_info },
> > +     { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0ab), /* T99W175 (sdx55) */
> > +             .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
> > +     { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0b2), /* T99W175 (sdx55) */
> > +             .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
> > +     { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0b3), /* T99W175 (sdx55) */
> > +             .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
>
> Please add a comment about these devices as you did below. Using T99W175 (sdx55)
> for all is not sufficient.
>
> Thanks,
> Mani
>
Ok, thanks, I will give more comments in the next patch.
Jarvis.

> > +     /* DW5930e (sdx55), With eSIM, It's also T99W175 */
> > +     { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0b0),
> > +             .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
> > +     /* DW5930e (sdx55), Non-eSIM, It's also T99W175 */
> > +     { PCI_DEVICE(PCI_VENDOR_ID_FOXCONN, 0xe0b1),
> > +             .driver_data = (kernel_ulong_t) &mhi_foxconn_sdx55_info },
> >       {  }
> >  };
> >  MODULE_DEVICE_TABLE(pci, mhi_pci_id_table);
> > --
> > 2.25.1
> >