From 8cd2b8ce48e52bfda76a04be9aef8c1b176693d9 Mon Sep 17 00:00:00 2001 From: Manivannan Sadhasivam Date: Mon, 17 Jul 2023 12:24:53 +0530 Subject: PCI: qcom-ep: Pass alignment restriction to the EPF core MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Qcom PCIe EP controllers have 4K alignment restriction for the outbound window address. Hence, pass this info to the EPF core so that the EPF drivers can make use of this info. Link: https://lore.kernel.org/linux-pci/20230717065459.14138-2-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam Signed-off-by: Krzysztof Wilczyński --- drivers/pci/controller/dwc/pcie-qcom-ep.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/pci/controller/dwc/pcie-qcom-ep.c') diff --git a/drivers/pci/controller/dwc/pcie-qcom-ep.c b/drivers/pci/controller/dwc/pcie-qcom-ep.c index 0fe7f06f2102..736be5bee458 100644 --- a/drivers/pci/controller/dwc/pcie-qcom-ep.c +++ b/drivers/pci/controller/dwc/pcie-qcom-ep.c @@ -706,6 +706,7 @@ static const struct pci_epc_features qcom_pcie_epc_features = { .core_init_notifier = true, .msi_capable = true, .msix_capable = false, + .align = SZ_4K, }; static const struct pci_epc_features * -- cgit v1.2.3 From ff8d92038cf92c886873c0e0628ba1272e6a087c Mon Sep 17 00:00:00 2001 From: Manivannan Sadhasivam Date: Mon, 17 Jul 2023 12:24:55 +0530 Subject: PCI: qcom-ep: Add eDMA support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Qualcomm PCIe Endpoint controllers have the in-built Embedded DMA (eDMA) peripheral for offloading the data transfer between the PCIe bus and memory. Let's add support for it by enabling the eDMA IRQ in the driver. The eDMA DMA Engine driver will handle the rest of the functionality. Since the eDMA on Qualcomm platforms only uses a single IRQ for all channels, use 1 for edma.nr_irqs. [kwilczynski: commit log] Link: https://lore.kernel.org/linux-pci/20230717065459.14138-4-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam Signed-off-by: Krzysztof Wilczyński --- drivers/pci/controller/dwc/pcie-qcom-ep.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'drivers/pci/controller/dwc/pcie-qcom-ep.c') diff --git a/drivers/pci/controller/dwc/pcie-qcom-ep.c b/drivers/pci/controller/dwc/pcie-qcom-ep.c index 736be5bee458..1baec81183b6 100644 --- a/drivers/pci/controller/dwc/pcie-qcom-ep.c +++ b/drivers/pci/controller/dwc/pcie-qcom-ep.c @@ -74,6 +74,7 @@ #define PARF_INT_ALL_PLS_ERR BIT(15) #define PARF_INT_ALL_PME_LEGACY BIT(16) #define PARF_INT_ALL_PLS_PME BIT(17) +#define PARF_INT_ALL_EDMA BIT(22) /* PARF_BDF_TO_SID_CFG register fields */ #define PARF_BDF_TO_SID_BYPASS BIT(0) @@ -395,7 +396,7 @@ static int qcom_pcie_perst_deassert(struct dw_pcie *pci) writel_relaxed(0, pcie_ep->parf + PARF_INT_ALL_MASK); val = PARF_INT_ALL_LINK_DOWN | PARF_INT_ALL_BME | PARF_INT_ALL_PM_TURNOFF | PARF_INT_ALL_DSTATE_CHANGE | - PARF_INT_ALL_LINK_UP; + PARF_INT_ALL_LINK_UP | PARF_INT_ALL_EDMA; writel_relaxed(val, pcie_ep->parf + PARF_INT_ALL_MASK); ret = dw_pcie_ep_init_complete(&pcie_ep->pci.ep); @@ -744,6 +745,7 @@ static int qcom_pcie_ep_probe(struct platform_device *pdev) pcie_ep->pci.dev = dev; pcie_ep->pci.ops = &pci_ops; pcie_ep->pci.ep.ops = &pci_ep_ops; + pcie_ep->pci.edma.nr_irqs = 1; platform_set_drvdata(pdev, pcie_ep); ret = qcom_pcie_ep_get_resources(pdev, pcie_ep); -- cgit v1.2.3