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aeddad1760
Add user APIs through ioctl to allocate, free, and be notified of an AFU interrupt. For opencapi, an AFU can trigger an interrupt on the host by sending a specific command targeting a 64-bit object handle. On POWER9, this is implemented by mapping a special page in the address space of a process and a write to that page will trigger an interrupt. Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
36 lines
1.4 KiB
C
36 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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// Copyright 2017 IBM Corp.
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#ifndef _ASM_PNV_OCXL_H
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#define _ASM_PNV_OCXL_H
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#include <linux/pci.h>
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#define PNV_OCXL_TL_MAX_TEMPLATE 63
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#define PNV_OCXL_TL_BITS_PER_RATE 4
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#define PNV_OCXL_TL_RATE_BUF_SIZE ((PNV_OCXL_TL_MAX_TEMPLATE+1) * PNV_OCXL_TL_BITS_PER_RATE / 8)
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extern int pnv_ocxl_get_actag(struct pci_dev *dev, u16 *base, u16 *enabled,
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u16 *supported);
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extern int pnv_ocxl_get_pasid_count(struct pci_dev *dev, int *count);
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extern int pnv_ocxl_get_tl_cap(struct pci_dev *dev, long *cap,
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char *rate_buf, int rate_buf_size);
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extern int pnv_ocxl_set_tl_conf(struct pci_dev *dev, long cap,
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uint64_t rate_buf_phys, int rate_buf_size);
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extern int pnv_ocxl_get_xsl_irq(struct pci_dev *dev, int *hwirq);
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extern void pnv_ocxl_unmap_xsl_regs(void __iomem *dsisr, void __iomem *dar,
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void __iomem *tfc, void __iomem *pe_handle);
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extern int pnv_ocxl_map_xsl_regs(struct pci_dev *dev, void __iomem **dsisr,
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void __iomem **dar, void __iomem **tfc,
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void __iomem **pe_handle);
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extern int pnv_ocxl_spa_setup(struct pci_dev *dev, void *spa_mem, int PE_mask,
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void **platform_data);
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extern void pnv_ocxl_spa_release(void *platform_data);
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extern int pnv_ocxl_spa_remove_pe(void *platform_data, int pe_handle);
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extern int pnv_ocxl_alloc_xive_irq(u32 *irq, u64 *trigger_addr);
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extern void pnv_ocxl_free_xive_irq(u32 irq);
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#endif /* _ASM_PNV_OCXL_H */
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