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3067ceeb00
Enable AER reporting for ednpoint. Provide error handler for AER reception and update error code to be read by user space process. Change PCIe link to down. Implement error reporting for runtime eDMA xfer errors. Bug 4088959 Jira NVIPC-334 Change-Id: I74871e5226eab1b708c72aa71216cd160c6ebf68 Signed-off-by: dbadgaiyan <dbadgaiyan@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2915753 (cherry picked from commit 7b24941fb486ada70229c42ae1deec12f75028c2) Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2921480 Reviewed-by: Arihant Jejani <ajejani@nvidia.com> Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
138 lines
3.8 KiB
C
138 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/* Copyright (c) 2022-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
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#ifndef __PCI_CLIENT_H__
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#define __PCI_CLIENT_H__
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#include <uapi/misc/nvscic2c-pcie-ioctl.h>
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#include "common.h"
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#include "module.h"
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/* forward declaration.*/
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struct vm_area_struct;
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struct dma_buf;
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struct dma_buf_attachment;
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/*
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* PCI client initialization parameters. The fields must remain persistent
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* till deinitialization (exit).
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*/
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struct pci_client_params {
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struct dma_buff_t *self_mem;
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struct pci_aper_t *peer_mem;
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/*
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* @DRV_MODE_EPC: &pci_dev->dev
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* @DRV_MODE_EPF: epf->epc->dev.parent.
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*/
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struct device *dev;
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};
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/* Initialize PCI client either for @DRV_MODE_EPF or @DRV_MODE_EPC. */
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int
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pci_client_init(struct pci_client_params *params, void **pci_client_h);
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/* Teardown of PCI client. */
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void
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pci_client_deinit(void **pci_client_h);
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/* reserve iova using the iova-manager.*/
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int
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pci_client_alloc_iova(void *pci_client_h, size_t size, u64 *address,
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size_t *offset, void **block_h);
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/* free the reserved iova.*/
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int
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pci_client_free_iova(void *pci_client_h, void **block_h);
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int
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pci_client_map_addr(void *pci_client_h, u64 to_iova, phys_addr_t paddr,
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size_t size, int prot);
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size_t
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pci_client_unmap_addr(void *pci_client_h, u64 from_iova, size_t size);
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/* get the pci aperture for a given offset.*/
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int
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pci_client_get_peer_aper(void *pci_client_h, size_t offsetof, size_t size,
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phys_addr_t *phys_addr);
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/* attach dma-buf to pci device.*/
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struct dma_buf_attachment *
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pci_client_dmabuf_attach(void *pci_client_h, struct dma_buf *dmabuff);
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/* detach dma-buf to pci device.*/
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void
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pci_client_dmabuf_detach(void *pci_client_h, struct dma_buf *dmabuff,
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struct dma_buf_attachment *attach);
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/*
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* Users/Units can register for PCI link events as received by
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* @DRV_MODE_EPF or @DRV_MODE_EPC module sbstraction.
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*/
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int
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pci_client_register_for_link_event(void *pci_client_h,
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struct callback_ops *ops, u32 *id);
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/* Unregister for PCI link events. - teardown only. */
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int
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pci_client_unregister_for_link_event(void *pci_client_h, u32 id);
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/*
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* Update the PCI link status as received in @DRV_MODE_EPF or @DRV_MODE_EPC
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* module abstraction. Propagate the link status to registered users.
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*/
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int
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pci_client_change_link_status(void *pci_client_h,
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enum nvscic2c_pcie_link status);
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/* Update PCIe error offset with error. */
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int
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pci_client_set_link_aer_error(void *pci_client_h, u32 err);
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/* Helper function to mmap the PCI link status memory to user-space.*/
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int
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pci_client_mmap_link_mem(void *pci_client_h, struct vm_area_struct *vma);
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/* Helper function to mmap eDMA error memory to user-space.*/
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int
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pci_client_mmap_edma_err_mem(void *pci_client_h,
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u32 ep_id, struct vm_area_struct *vma);
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/* Update eDMA xfer error code.*/
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int
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pci_client_set_edma_error(void *pci_client_h, u32 ep_id, u32 err);
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/* Query PCI link status. */
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enum nvscic2c_pcie_link
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pci_client_query_link_status(void *pci_client_h);
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/*
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* Helper functions to set and set driver context from pci_client_h
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*/
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/* Save driver context of DRV_MODE_EPF or DRV_MODE_EPC */
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int
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pci_client_save_driver_ctx(void *pci_client_h, struct driver_ctx_t *drv_ctx);
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/* Getter driver context of DRV_MODE_EPF or DRV_MODE_EPC */
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struct driver_ctx_t *
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pci_client_get_driver_ctx(void *pci_client_h);
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/*getter drv mode */
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enum drv_mode_t
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pci_client_get_drv_mode(void *pci_client_h);
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/* save peer cpu sent by boottrap msg */
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int
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pci_client_save_peer_cpu(void *pci_client_h, enum peer_cpu_t peer_cpu);
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/* Getter the soc/arch of rp */
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enum peer_cpu_t
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pci_client_get_peer_cpu(void *pci_client_h);
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/* Get allocated edma rx desc iova */
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dma_addr_t
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pci_client_get_edma_rx_desc_iova(void *pci_client_h);
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/* pci client raise irq to rp */
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int
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pci_client_raise_irq(void *pci_client_h, enum pci_epc_irq_type type, u16 num);
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#endif // __PCI_CLIENT_H__
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