From: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
To: 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,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@somainline.org>
Subject: [PATCH v1 3/7] net: ipa: gsi: Avoid some writes during irq setup for older IPA
Date: Thu, 11 Feb 2021 18:50:11 +0100 [thread overview]
Message-ID: <20210211175015.200772-4-angelogioacchino.delregno@somainline.org> (raw)
In-Reply-To: <20210211175015.200772-1-angelogioacchino.delregno@somainline.org>
On some IPA versions (v3.1 and older), writing to registers
GSI_INTER_EE_SRC_CH_IRQ_OFFSET and GSI_INTER_EE_SRC_EV_CH_IRQ_OFFSET
will generate a fault and the SoC will lockup.
Avoid clearing CH and EV_CH interrupts on GSI probe to fix this bad
behavior: we are anyway not going to get spurious interrupts.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
---
drivers/net/ipa/gsi.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ipa/gsi.c b/drivers/net/ipa/gsi.c
index 6315336b3ca8..b5460cbb085c 100644
--- a/drivers/net/ipa/gsi.c
+++ b/drivers/net/ipa/gsi.c
@@ -207,11 +207,14 @@ static void gsi_irq_setup(struct gsi *gsi)
iowrite32(0, gsi->virt + GSI_CNTXT_SRC_IEOB_IRQ_MSK_OFFSET);
/* Reverse the offset adjustment for inter-EE register offsets */
- adjust = gsi->version < IPA_VERSION_4_5 ? 0 : GSI_EE_REG_ADJUST;
- iowrite32(0, gsi->virt + adjust + GSI_INTER_EE_SRC_CH_IRQ_OFFSET);
- iowrite32(0, gsi->virt + adjust + GSI_INTER_EE_SRC_EV_CH_IRQ_OFFSET);
+ if (gsi->version > IPA_VERSION_3_1) {
+ adjust = gsi->version < IPA_VERSION_4_5 ? 0 : GSI_EE_REG_ADJUST;
+ iowrite32(0, gsi->virt + adjust + GSI_INTER_EE_SRC_CH_IRQ_OFFSET);
+ iowrite32(0, gsi->virt + adjust + GSI_INTER_EE_SRC_EV_CH_IRQ_OFFSET);
+ }
iowrite32(0, gsi->virt + GSI_CNTXT_GSI_IRQ_EN_OFFSET);
+
}
/* Turn off all GSI interrupts when we're all done */
--
2.30.0
next prev parent reply other threads:[~2021-02-11 18:02 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-11 17:50 [PATCH v1 0/7] Add support for IPA v3.1, GSI v1.0, MSM8998 IPA AngeloGioacchino Del Regno
2021-02-11 17:50 ` [PATCH v1 1/7] net: ipa: Add support for IPA v3.1 with GSI v1.0 AngeloGioacchino Del Regno
2021-02-12 18:49 ` Jakub Kicinski
2021-03-02 2:05 ` Alex Elder
2021-05-05 22:42 ` Alex Elder
2021-02-11 17:50 ` [PATCH v1 2/7] net: ipa: endpoint: Don't read unexistant register on IPAv3.1 AngeloGioacchino Del Regno
2021-03-02 2:05 ` Alex Elder
2021-05-05 22:42 ` Alex Elder
2021-02-11 17:50 ` AngeloGioacchino Del Regno [this message]
2021-03-02 2:05 ` [PATCH v1 3/7] net: ipa: gsi: Avoid some writes during irq setup for older IPA Alex Elder
2021-05-05 22:42 ` Alex Elder
2021-02-11 17:50 ` [PATCH v1 4/7] net: ipa: gsi: Use right masks for GSI v1.0 channels hw param AngeloGioacchino Del Regno
2021-03-02 2:05 ` Alex Elder
2021-05-05 22:42 ` Alex Elder
2021-02-11 17:50 ` [PATCH v1 5/7] net: ipa: Add support for IPA on MSM8998 AngeloGioacchino Del Regno
2021-02-12 18:50 ` Jakub Kicinski
2021-03-02 2:05 ` Alex Elder
2021-05-05 22:42 ` Alex Elder
2021-02-11 17:50 ` [PATCH v1 6/7] dt-bindings: net: qcom-ipa: Document qcom,sc7180-ipa compatible AngeloGioacchino Del Regno
2021-03-02 2:05 ` Alex Elder
2021-03-05 19:32 ` Rob Herring
2021-05-05 22:43 ` Alex Elder
2021-02-11 17:50 ` [PATCH v1 7/7] dt-bindings: net: qcom-ipa: Document qcom,msm8998-ipa compatible AngeloGioacchino Del Regno
2021-03-02 2:05 ` Alex Elder
2021-03-05 19:33 ` Rob Herring
2021-05-05 22:43 ` Alex Elder
2021-02-11 20:27 ` [PATCH v1 0/7] Add support for IPA v3.1, GSI v1.0, MSM8998 IPA Alex Elder
2021-02-11 21:51 ` AngeloGioacchino Del Regno
2021-03-02 2:04 ` Alex Elder
2021-05-05 22:42 ` Alex Elder
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