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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/drivers/misc/cxl/vphb.c
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@@ -1,26 +1,11 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Copyright 2014 IBM Corp.
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; either version
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- * 2 of the License, or (at your option) any later version.
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  */
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 #include <linux/pci.h>
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 #include <misc/cxl.h>
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 #include "cxl.h"
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-
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-static int cxl_dma_set_mask(struct pci_dev *pdev, u64 dma_mask)
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-{
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-	if (dma_mask < DMA_BIT_MASK(64)) {
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-		pr_info("%s only 64bit DMA supported on CXL", __func__);
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-		return -EIO;
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-	}
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-
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-	*(pdev->dev.dma_mask) = dma_mask;
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-	return 0;
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-}
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 static int cxl_pci_probe_mode(struct pci_bus *bus)
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 {
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@@ -54,8 +39,7 @@
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 		return false;
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 	}
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-	set_dma_ops(&dev->dev, &dma_nommu_ops);
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-	set_dma_offset(&dev->dev, PAGE_OFFSET);
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+	dev->dev.archdata.dma_offset = PAGE_OFFSET;
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 	/*
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 	 * Allocate a context to do cxl things too.  If we eventually do real
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@@ -166,7 +150,7 @@
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 out:
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 	cxl_afu_configured_put(afu);
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-	return rc ? PCIBIOS_DEVICE_NOT_FOUND : PCIBIOS_SUCCESSFUL;
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+	return rc ? PCIBIOS_DEVICE_NOT_FOUND : 0;
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 }
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 static int cxl_pcie_write_config(struct pci_bus *bus, unsigned int devfn,
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@@ -200,7 +184,7 @@
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 out:
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 	cxl_afu_configured_put(afu);
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-	return rc ? PCIBIOS_SET_FAILED : PCIBIOS_SUCCESSFUL;
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+	return rc ? PCIBIOS_SET_FAILED : 0;
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 }
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 static struct pci_ops cxl_pcie_pci_ops =
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@@ -220,7 +204,6 @@
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 	.reset_secondary_bus = cxl_pci_reset_secondary_bus,
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 	.setup_msi_irqs = cxl_setup_msi_irqs,
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 	.teardown_msi_irqs = cxl_teardown_msi_irqs,
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-	.dma_set_mask = cxl_dma_set_mask,
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 };
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 int cxl_pci_vphb_add(struct cxl_afu *afu)