linux-kernel - Re: Re: [PATCH] bus: mhi: host: Add firehose support for Foxconn SDX24/SDX55/SDX65

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Message-ID: <CAA8EJpoiOLYMhxyJbdrgnMVfVggL9cOWtX8L__YKd=RPQWOcSg@mail.gmail.com>
Date: Mon, 15 Jul 2024 09:16:57 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Slark Xiao <slark_xiao@....com>
Cc: manivannan.sadhasivam@...aro.org, mhi@...ts.linux.dev, 
	linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Re: [PATCH] bus: mhi: host: Add firehose support for Foxconn SDX24/SDX55/SDX65

On Mon, 15 Jul 2024 at 08:46, Slark Xiao <slark_xiao@....com> wrote:
>
>
> At 2024-07-13 23:09:47, "Dmitry Baryshkov" <dmitry.baryshkov@...aro.org> wrote:
> >On Tue, Jul 09, 2024 at 09:58:18AM GMT, Slark Xiao wrote:
> >> Since we implement the FIREHOSE channel support in foxconn mhi
> >> channels, that means each product which use this channel config
> >> would support FIREHOSE. But according to the trigger_edl feature,
> >> we need to enable it by adding '.edl_trigger = true' in device
> >> info struct.
> >> Also, we update all edl image path from 'qcom' to 'fox' in case of
> >> conflicting with other vendors.
> >
> >Separate patches please. Also don't use "we", just an imerative style:
> >do this and that.
> >
>
> Do you mean use 2 patches (1 for enabling trigger edl and 1 for
> modifying path)? Though these changes are aimed to make
> firehose download successfully.

Yes. "Do this. Also do that" is usually a sign that the patch should be split.

>
> >>
> >> Signed-off-by: Slark Xiao <slark_xiao@....com>
> >> ---
> >>  drivers/bus/mhi/host/pci_generic.c | 20 ++++++++++++++------
> >>  1 file changed, 14 insertions(+), 6 deletions(-)
> >>
> >> diff --git a/drivers/bus/mhi/host/pci_generic.c b/drivers/bus/mhi/host/pci_generic.c
> >> index 14a11880bcea..440609b81e57 100644
> >> --- a/drivers/bus/mhi/host/pci_generic.c
> >> +++ b/drivers/bus/mhi/host/pci_generic.c
> >> @@ -433,8 +433,8 @@ static const struct mhi_controller_config modem_foxconn_sdx72_config = {
> >>
> >>  static const struct mhi_pci_dev_info mhi_foxconn_sdx55_info = {
> >>      .name = "foxconn-sdx55",
> >> -    .fw = "qcom/sdx55m/sbl1.mbn",
> >> -    .edl = "qcom/sdx55m/edl.mbn",
> >> +    .edl = "fox/sdx55m/prog_firehose_sdx55.mbn",
> >
> >qcom/sdx55m/foxconn/prog_firehose_sdx55.mbn
>
> what's your opinion?Mani
>
> >
> >> +    .edl_trigger = true,
> >>      .config = &modem_foxconn_sdx55_config,
> >>      .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
> >>      .dma_data_width = 32,
> >> @@ -444,8 +444,8 @@ static const struct mhi_pci_dev_info mhi_foxconn_sdx55_info = {
> >>
> >>  static const struct mhi_pci_dev_info mhi_foxconn_t99w175_info = {
> >>      .name = "foxconn-t99w175",
> >> -    .fw = "qcom/sdx55m/sbl1.mbn",
> >> -    .edl = "qcom/sdx55m/edl.mbn",
> >> +    .edl = "fox/sdx55m/prog_firehose_sdx55.mbn",
> >
> >Is it the same file as the one mentioned in the previous chunk or is it
> >different?
> >
>
> They are same for same chip, though we have some variants.

Please excuse me, I can't fully understand. So are the files the same or not?

There is a simple mental experiment regarding the file names: you
should be able to have a single host rootfs, which supports working
with all of your modems at the same time, without modifications.
So if modem A and modem B might use file foo.bar and the file is the
same for all SDX55 modems, it's fine to have it in qcom/sdx55m/ or in
qcom/sdx55m/foxconn. If it is different depending on the end-device,
it should go to the qcom/sdx55m/foxconn/devname/ .

>
> >If they are different, then, please,
> >
> >qcom/sdx55m/foxconn/t99w175/prog_firehose_sdx55.mbn
> >
> >
> >> +    .edl_trigger = true,
> >>      .config = &modem_foxconn_sdx55_config,
> >>      .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
> >>      .dma_data_width = 32,
> >> @@ -455,8 +455,8 @@ static const struct mhi_pci_dev_info mhi_foxconn_t99w175_info = {
> >>
> >>  static const struct mhi_pci_dev_info mhi_foxconn_dw5930e_info = {
> >>      .name = "foxconn-dw5930e",
> >> -    .fw = "qcom/sdx55m/sbl1.mbn",
> >> -    .edl = "qcom/sdx55m/edl.mbn",
> >> +    .edl = "fox/sdx55m/prog_firehose_sdx55.mbn",
> >> +    .edl_trigger = true,
> >>      .config = &modem_foxconn_sdx55_config,
> >>      .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
> >>      .dma_data_width = 32,
> >> @@ -466,6 +466,8 @@ static const struct mhi_pci_dev_info mhi_foxconn_dw5930e_info = {
> >>
> >>  static const struct mhi_pci_dev_info mhi_foxconn_t99w368_info = {
> >>      .name = "foxconn-t99w368",
> >> +    .edl = "fox/sdx65m/prog_firehose_lite.elf",
> >> +    .edl_trigger = true,
> >>      .config = &modem_foxconn_sdx55_config,
> >>      .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
> >>      .dma_data_width = 32,
> >> @@ -475,6 +477,8 @@ static const struct mhi_pci_dev_info mhi_foxconn_t99w368_info = {
> >>
> >>  static const struct mhi_pci_dev_info mhi_foxconn_t99w373_info = {
> >>      .name = "foxconn-t99w373",
> >> +    .edl = "fox/sdx65m/prog_firehose_lite.elf",
> >> +    .edl_trigger = true,
> >>      .config = &modem_foxconn_sdx55_config,
> >>      .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
> >>      .dma_data_width = 32,
> >> @@ -484,6 +488,8 @@ static const struct mhi_pci_dev_info mhi_foxconn_t99w373_info = {
> >>
> >>  static const struct mhi_pci_dev_info mhi_foxconn_t99w510_info = {
> >>      .name = "foxconn-t99w510",
> >> +    .edl = "fox/sdx24m/prog_firehose_sdx24.mbn",
> >> +    .edl_trigger = true,
> >>      .config = &modem_foxconn_sdx55_config,
> >>      .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
> >>      .dma_data_width = 32,
> >> @@ -493,6 +499,8 @@ static const struct mhi_pci_dev_info mhi_foxconn_t99w510_info = {
> >>
> >>  static const struct mhi_pci_dev_info mhi_foxconn_dw5932e_info = {
> >>      .name = "foxconn-dw5932e",
> >> +    .edl = "fox/sdx65m/prog_firehose_lite.elf",
> >> +    .edl_trigger = true,
> >>      .config = &modem_foxconn_sdx55_config,
> >>      .bar_num = MHI_PCI_DEFAULT_BAR_NUM,
> >>      .dma_data_width = 32,
> >> --
> >> 2.25.1
> >>
> >
> >--
> >With best wishes
> >Dmitry



-- 
With best wishes
Dmitry