From: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
To: "Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Kishon Vijay Abraham I" <kishon@kernel.org>,
"Thierry Reding" <thierry.reding@gmail.com>,
"Jonathan Hunter" <jonathanh@nvidia.com>,
"Jingoo Han" <jingoohan1@gmail.com>,
"Gustavo Pimentel" <gustavo.pimentel@synopsys.com>
Cc: linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org, mhi@lists.linux.dev,
linux-tegra@vger.kernel.org,
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Subject: [PATCH 05/11] PCI: epf-{mhi/test}: Move DMA initialization to EPC init callback
Date: Thu, 14 Mar 2024 20:53:44 +0530 [thread overview]
Message-ID: <20240314-pci-epf-rework-v1-5-6134e6c1d491@linaro.org> (raw)
In-Reply-To: <20240314-pci-epf-rework-v1-0-6134e6c1d491@linaro.org>
To maintain uniformity across EPF drivers, let's move the DMA
initialization to EPC init callback. This will also allow us to deinit DMA
during PERST# assert in the further commits.
For EPC drivers without PERST#, DMA deinit will only happen during driver
unbind.
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
---
drivers/pci/endpoint/functions/pci-epf-mhi.c | 16 ++++++++--------
drivers/pci/endpoint/functions/pci-epf-test.c | 12 ++++++------
2 files changed, 14 insertions(+), 14 deletions(-)
diff --git a/drivers/pci/endpoint/functions/pci-epf-mhi.c b/drivers/pci/endpoint/functions/pci-epf-mhi.c
index da894a9a447e..4e4300efd9d7 100644
--- a/drivers/pci/endpoint/functions/pci-epf-mhi.c
+++ b/drivers/pci/endpoint/functions/pci-epf-mhi.c
@@ -737,6 +737,14 @@ static int pci_epf_mhi_epc_init(struct pci_epf *epf)
if (!epf_mhi->epc_features)
return -ENODATA;
+ if (info->flags & MHI_EPF_USE_DMA) {
+ ret = pci_epf_mhi_dma_init(epf_mhi);
+ if (ret) {
+ dev_err(dev, "Failed to initialize DMA: %d\n", ret);
+ return ret;
+ }
+ }
+
return 0;
}
@@ -749,14 +757,6 @@ static int pci_epf_mhi_link_up(struct pci_epf *epf)
struct device *dev = &epf->dev;
int ret;
- if (info->flags & MHI_EPF_USE_DMA) {
- ret = pci_epf_mhi_dma_init(epf_mhi);
- if (ret) {
- dev_err(dev, "Failed to initialize DMA: %d\n", ret);
- return ret;
- }
- }
-
mhi_cntrl->mmio = epf_mhi->mmio;
mhi_cntrl->irq = epf_mhi->irq;
mhi_cntrl->mru = info->mru;
diff --git a/drivers/pci/endpoint/functions/pci-epf-test.c b/drivers/pci/endpoint/functions/pci-epf-test.c
index 2fac36553633..8f1e0cb08814 100644
--- a/drivers/pci/endpoint/functions/pci-epf-test.c
+++ b/drivers/pci/endpoint/functions/pci-epf-test.c
@@ -753,6 +753,12 @@ static int pci_epf_test_epc_init(struct pci_epf *epf)
bool msi_capable = true;
int ret;
+ epf_test->dma_supported = true;
+
+ ret = pci_epf_test_init_dma_chan(epf_test);
+ if (ret)
+ epf_test->dma_supported = false;
+
epc_features = pci_epc_get_features(epc, epf->func_no, epf->vfunc_no);
if (epc_features) {
msix_capable = epc_features->msix_capable;
@@ -942,12 +948,6 @@ static int pci_epf_test_bind(struct pci_epf *epf)
if (ret)
return ret;
- epf_test->dma_supported = true;
-
- ret = pci_epf_test_init_dma_chan(epf_test);
- if (ret)
- epf_test->dma_supported = false;
-
return 0;
}
--
2.25.1
next prev parent reply other threads:[~2024-03-14 15:24 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-14 15:23 [PATCH 00/11] PCI: endpoint: Make host reboot handling more robust Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 01/11] PCI: qcom-ep: Disable resources unconditionally during PERST# assert Manivannan Sadhasivam
2024-03-22 16:08 ` Niklas Cassel
2024-03-26 7:44 ` Manivannan Sadhasivam
2024-03-26 10:24 ` Niklas Cassel
2024-03-26 11:10 ` Manivannan Sadhasivam
2024-03-26 13:47 ` Niklas Cassel
2024-03-26 13:55 ` Manivannan Sadhasivam
2024-03-26 10:37 ` Niklas Cassel
2024-03-14 15:23 ` [PATCH 02/11] PCI: endpoint: Decouple EPC and PCIe bus specific events Manivannan Sadhasivam
2024-03-22 16:08 ` Niklas Cassel
2024-03-26 7:49 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 03/11] PCI: endpoint: Rename core_init() callback in 'struct pci_epc_event_ops' to init() Manivannan Sadhasivam
2024-03-22 16:08 ` Niklas Cassel
2024-03-26 7:56 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 04/11] PCI: epf-test: Refactor pci_epf_test_unbind() function Manivannan Sadhasivam
2024-03-22 16:09 ` Niklas Cassel
2024-03-26 7:58 ` Manivannan Sadhasivam
2024-03-14 15:23 ` Manivannan Sadhasivam [this message]
2024-03-22 16:10 ` [PATCH 05/11] PCI: epf-{mhi/test}: Move DMA initialization to EPC init callback Niklas Cassel
2024-03-26 8:26 ` Manivannan Sadhasivam
2024-03-26 11:05 ` Niklas Cassel
2024-03-26 14:27 ` Niklas Cassel
2024-03-27 6:20 ` Manivannan Sadhasivam
2024-03-27 6:18 ` Manivannan Sadhasivam
2024-03-27 11:39 ` Niklas Cassel
2024-03-28 18:42 ` Vinod Koul
2024-04-04 8:44 ` Niklas Cassel
2024-04-22 7:55 ` Manivannan Sadhasivam
2024-04-22 9:30 ` Niklas Cassel
2024-03-14 15:23 ` [PATCH 06/11] PCI: endpoint: Introduce EPC 'deinit' event and notify the EPF drivers Manivannan Sadhasivam
2024-03-22 16:10 ` Niklas Cassel
2024-03-26 8:31 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 07/11] PCI: dwc: ep: Add a generic dw_pcie_ep_linkdown() API to handle Link Down event Manivannan Sadhasivam
2024-03-22 16:10 ` Niklas Cassel
2024-03-27 18:06 ` Niklas Cassel
2024-04-01 16:34 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 08/11] PCI: qcom-ep: Use the " Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 09/11] PCI: epf-test: Handle " Manivannan Sadhasivam
2024-03-22 16:10 ` Niklas Cassel
2024-03-14 15:23 ` [PATCH 10/11] PCI: qcom-ep: Rework {start/stop}_link() callbacks implementation Manivannan Sadhasivam
2024-03-22 16:10 ` Niklas Cassel
2024-03-26 8:33 ` Manivannan Sadhasivam
2024-03-14 15:23 ` [PATCH 11/11] PCI: tegra194: " Manivannan Sadhasivam
2024-03-22 16:11 ` Niklas Cassel
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