linux-kernel - [PATCH 1/5] PCI: endpoint: functions/pci-epf-test: Add DMA support to transfer data

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Date:   Tue, 25 Feb 2020 13:11:07 -0800
From:   Alan Mikhak <alan.mikhak@...ive.com>
To:     kishon@...com
Cc:     alan.mikhak@...ive.com, amurray@...goodpenguin.co.uk,
        arnd@...db.de, bhelgaas@...gle.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        lorenzo.pieralisi@....com
Subject: [PATCH 1/5] PCI: endpoint: functions/pci-epf-test: Add DMA support to transfer data

@@ -380,6 +572,7 @@ static void pci_epf_test_unbind(struct pci_epf *epf)
        int bar;

        cancel_delayed_work(&epf_test->cmd_handler);
+       pci_epf_clean_dma_chan(epf_test);
        pci_epc_stop(epc);
        for (bar = 0; bar < PCI_STD_NUM_BARS; bar++) {
                epf_bar = &epf->bar[bar];
@@ -550,6 +743,12 @@ static int pci_epf_test_bind(struct pci_epf *epf)
                }
        }

+       epf_test->dma_supported = true;
+
+       ret = pci_epf_init_dma_chan(epf_test);
+       if (ret)
+               epf_test->dma_supported = false;
+
        if (linkup_notifier) {
                epf->nb.notifier_call = pci_epf_test_notifier;
                pci_epc_register_notifier(epc, &epf->nb);

Hi Kishon,

Looking forward to building and trying this patch series on
a platform I work on.

Would you please point me to where I can find the patches
which add pci_epf_init_dma_chan() and pci_epf_clean_dma_chan()
to Linux PCI Endpoint Framework?

Regards,
Alan Mikhak