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[73.185.129.58]) by smtp.googlemail.com with ESMTPSA id h2sm3009479ioh.6.2021.02.11.12.27.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 11 Feb 2021 12:27:03 -0800 (PST) Subject: Re: [PATCH v1 0/7] Add support for IPA v3.1, GSI v1.0, MSM8998 IPA To: AngeloGioacchino Del Regno , elder@kernel.org Cc: bjorn.andersson@linaro.org, agross@kernel.org, davem@davemloft.net, kuba@kernel.org, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, konrad.dybcio@somainline.org, marijn.suijten@somainline.org, phone-devel@vger.kernel.org References: <20210211175015.200772-1-angelogioacchino.delregno@somainline.org> From: Alex Elder Message-ID: <3a596fce-9aa3-e2eb-7920-4ada65f8d2ee@ieee.org> Date: Thu, 11 Feb 2021 14:27:01 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.1 MIME-Version: 1.0 In-Reply-To: <20210211175015.200772-1-angelogioacchino.delregno@somainline.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 2/11/21 11:50 AM, AngeloGioacchino Del Regno wrote: > Hey all! > > This time around I thought that it would be nice to get some modem > action going on. We have it, it's working (ish), so just.. why not. Thank you for the patches! I would like to review these carefully but I'm sorry I won't be able to get to it today, and possibly not for a few days. But I *will* review them. I just want you to know I'm paying attention, though I'm sort of buried in an important issue right now. I'm very impressed at how small the patches are though. -Alex > This series adds support for IPA v3.1 (featuring GSI v1.0) and also > takes account for some bits that are shared with other unimplemented > IPA v3 variants and it is specifically targeting MSM8998, for which > support is added. > > Since the userspace isn't entirely ready (as far as I can see) for > data connection (3g/lte/whatever) through the modem, it was possible > to only partially test this series. > Specifically, loading the IPA firmware and setting up the interface > went just fine, along with a basic setup of the network interface > that got exposed by this driver. > > With this series, the benefits that I see are: > 1. The modem doesn't crash anymore when trying to setup a data > connection, as now the modem firmware seems to be happy with > having IPA initialized and ready; > 2. Other random modem crashes while picking up LTE home network > signal (even just for calling, nothing fancy) seem to be gone. > > These are the reasons why I think that this series is ready for > upstream action. It's *at least* stabilizing the platform when > the modem is up. > > This was tested on the F(x)Tec Pro 1 (MSM8998) smartphone. > > AngeloGioacchino Del Regno (7): > net: ipa: Add support for IPA v3.1 with GSI v1.0 > net: ipa: endpoint: Don't read unexistant register on IPAv3.1 > net: ipa: gsi: Avoid some writes during irq setup for older IPA > net: ipa: gsi: Use right masks for GSI v1.0 channels hw param > net: ipa: Add support for IPA on MSM8998 > dt-bindings: net: qcom-ipa: Document qcom,sc7180-ipa compatible > dt-bindings: net: qcom-ipa: Document qcom,msm8998-ipa compatible > > .../devicetree/bindings/net/qcom,ipa.yaml | 7 +- > drivers/net/ipa/Makefile | 3 +- > drivers/net/ipa/gsi.c | 33 +- > drivers/net/ipa/gsi_reg.h | 5 + > drivers/net/ipa/ipa_data-msm8998.c | 407 ++++++++++++++++++ > drivers/net/ipa/ipa_data.h | 5 + > drivers/net/ipa/ipa_endpoint.c | 26 +- > drivers/net/ipa/ipa_main.c | 12 +- > drivers/net/ipa/ipa_reg.h | 3 + > drivers/net/ipa/ipa_version.h | 1 + > 10 files changed, 480 insertions(+), 22 deletions(-) > create mode 100644 drivers/net/ipa/ipa_data-msm8998.c >