2019-09-20 19:18:30 +03:00
|
|
|
/* SPDX-License-Identifier: GPL-2.0+ */
|
2018-01-23 14:31:41 +03:00
|
|
|
// Copyright 2017 IBM Corp.
|
|
|
|
#ifndef _OCXL_INTERNAL_H_
|
|
|
|
#define _OCXL_INTERNAL_H_
|
|
|
|
|
|
|
|
#include <linux/pci.h>
|
|
|
|
#include <linux/cdev.h>
|
|
|
|
#include <linux/list.h>
|
2018-01-23 14:31:43 +03:00
|
|
|
#include <misc/ocxl.h>
|
2018-01-23 14:31:41 +03:00
|
|
|
|
|
|
|
#define MAX_IRQ_PER_LINK 2000
|
|
|
|
#define MAX_IRQ_PER_CONTEXT MAX_IRQ_PER_LINK
|
|
|
|
|
|
|
|
extern struct pci_driver ocxl_pci_driver;
|
|
|
|
|
|
|
|
struct ocxl_fn {
|
|
|
|
struct device dev;
|
|
|
|
int bar_used[3];
|
|
|
|
struct ocxl_fn_config config;
|
|
|
|
struct list_head afu_list;
|
|
|
|
int pasid_base;
|
|
|
|
int actag_base;
|
|
|
|
int actag_enabled;
|
|
|
|
int actag_supported;
|
|
|
|
struct list_head pasid_list;
|
|
|
|
struct list_head actag_list;
|
|
|
|
void *link;
|
|
|
|
};
|
|
|
|
|
2019-03-27 08:31:32 +03:00
|
|
|
struct ocxl_file_info {
|
|
|
|
struct ocxl_afu *afu;
|
|
|
|
struct device dev;
|
|
|
|
struct cdev cdev;
|
|
|
|
struct bin_attribute attr_global_mmio;
|
|
|
|
};
|
|
|
|
|
2018-01-23 14:31:41 +03:00
|
|
|
struct ocxl_afu {
|
2019-03-27 08:31:32 +03:00
|
|
|
struct kref kref;
|
2018-01-23 14:31:41 +03:00
|
|
|
struct ocxl_fn *fn;
|
|
|
|
struct list_head list;
|
|
|
|
struct ocxl_afu_config config;
|
|
|
|
int pasid_base;
|
|
|
|
int pasid_count; /* opened contexts */
|
|
|
|
int pasid_max; /* maximum number of contexts */
|
|
|
|
int actag_base;
|
|
|
|
int actag_enabled;
|
|
|
|
struct mutex contexts_lock;
|
|
|
|
struct idr contexts_idr;
|
|
|
|
struct mutex afu_control_lock;
|
|
|
|
u64 global_mmio_start;
|
|
|
|
u64 irq_base_offset;
|
|
|
|
void __iomem *global_mmio_ptr;
|
|
|
|
u64 pp_mmio_start;
|
2019-03-27 08:31:32 +03:00
|
|
|
void *private;
|
2018-01-23 14:31:41 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
enum ocxl_context_status {
|
|
|
|
CLOSED,
|
|
|
|
OPENED,
|
|
|
|
ATTACHED,
|
|
|
|
};
|
|
|
|
|
|
|
|
// Contains metadata about a translation fault
|
|
|
|
struct ocxl_xsl_error {
|
|
|
|
u64 addr; // The address that triggered the fault
|
|
|
|
u64 dsisr; // the value of the dsisr register
|
|
|
|
u64 count; // The number of times this fault has been triggered
|
|
|
|
};
|
|
|
|
|
|
|
|
struct ocxl_context {
|
|
|
|
struct ocxl_afu *afu;
|
|
|
|
int pasid;
|
|
|
|
struct mutex status_mutex;
|
|
|
|
enum ocxl_context_status status;
|
|
|
|
struct address_space *mapping;
|
|
|
|
struct mutex mapping_lock;
|
|
|
|
wait_queue_head_t events_wq;
|
|
|
|
struct mutex xsl_error_lock;
|
|
|
|
struct ocxl_xsl_error xsl_error;
|
|
|
|
struct mutex irq_lock;
|
|
|
|
struct idr irq_idr;
|
2018-05-11 09:13:01 +03:00
|
|
|
u16 tidr; // Thread ID used for P9 wait implementation
|
2018-01-23 14:31:41 +03:00
|
|
|
};
|
|
|
|
|
|
|
|
struct ocxl_process_element {
|
|
|
|
__be64 config_state;
|
2020-11-25 18:50:11 +03:00
|
|
|
__be32 pasid;
|
|
|
|
__be16 bdf;
|
|
|
|
__be16 reserved1;
|
|
|
|
__be32 reserved2[9];
|
2018-01-23 14:31:41 +03:00
|
|
|
__be32 lpid;
|
|
|
|
__be32 tid;
|
|
|
|
__be32 pid;
|
2020-11-25 18:50:11 +03:00
|
|
|
__be32 reserved3[10];
|
2018-01-23 14:31:41 +03:00
|
|
|
__be64 amr;
|
2020-11-25 18:50:11 +03:00
|
|
|
__be32 reserved4[3];
|
2018-01-23 14:31:41 +03:00
|
|
|
__be32 software_state;
|
|
|
|
};
|
|
|
|
|
2019-03-25 08:34:54 +03:00
|
|
|
int ocxl_create_cdev(struct ocxl_afu *afu);
|
|
|
|
void ocxl_destroy_cdev(struct ocxl_afu *afu);
|
2019-03-27 08:31:32 +03:00
|
|
|
int ocxl_file_register_afu(struct ocxl_afu *afu);
|
|
|
|
void ocxl_file_unregister_afu(struct ocxl_afu *afu);
|
2018-01-23 14:31:41 +03:00
|
|
|
|
2019-03-25 08:34:54 +03:00
|
|
|
int ocxl_file_init(void);
|
|
|
|
void ocxl_file_exit(void);
|
2018-01-23 14:31:41 +03:00
|
|
|
|
2019-03-25 08:34:54 +03:00
|
|
|
int ocxl_pasid_afu_alloc(struct ocxl_fn *fn, u32 size);
|
|
|
|
void ocxl_pasid_afu_free(struct ocxl_fn *fn, u32 start, u32 size);
|
|
|
|
int ocxl_actag_afu_alloc(struct ocxl_fn *fn, u32 size);
|
|
|
|
void ocxl_actag_afu_free(struct ocxl_fn *fn, u32 start, u32 size);
|
2018-01-23 14:31:41 +03:00
|
|
|
|
2019-03-25 08:34:55 +03:00
|
|
|
/*
|
|
|
|
* Get the max PASID value that can be used by the function
|
|
|
|
*/
|
|
|
|
int ocxl_config_get_pasid_info(struct pci_dev *dev, int *count);
|
|
|
|
|
2020-06-19 17:04:39 +03:00
|
|
|
/*
|
|
|
|
* Control whether the FPGA is reloaded on a link reset
|
|
|
|
*/
|
|
|
|
int ocxl_config_get_reset_reload(struct pci_dev *dev, int *val);
|
|
|
|
int ocxl_config_set_reset_reload(struct pci_dev *dev, int val);
|
|
|
|
|
2019-03-25 08:34:55 +03:00
|
|
|
/*
|
|
|
|
* Check if an AFU index is valid for the given function.
|
|
|
|
*
|
|
|
|
* AFU indexes can be sparse, so a driver should check all indexes up
|
|
|
|
* to the maximum found in the function description
|
|
|
|
*/
|
|
|
|
int ocxl_config_check_afu_index(struct pci_dev *dev,
|
|
|
|
struct ocxl_fn_config *fn, int afu_idx);
|
|
|
|
|
|
|
|
/**
|
2020-04-15 04:23:43 +03:00
|
|
|
* ocxl_link_update_pe() - Update values within a Process Element
|
|
|
|
* @link_handle: the link handle associated with the process element
|
|
|
|
* @pasid: the PASID for the AFU context
|
|
|
|
* @tid: the new thread id for the process element
|
2019-03-25 08:34:55 +03:00
|
|
|
*
|
2020-04-15 04:23:43 +03:00
|
|
|
* Returns 0 on success
|
2019-03-25 08:34:55 +03:00
|
|
|
*/
|
|
|
|
int ocxl_link_update_pe(void *link_handle, int pasid, __u16 tid);
|
|
|
|
|
2019-03-25 08:34:54 +03:00
|
|
|
int ocxl_context_mmap(struct ocxl_context *ctx,
|
2018-01-23 14:31:41 +03:00
|
|
|
struct vm_area_struct *vma);
|
2019-03-25 08:34:54 +03:00
|
|
|
void ocxl_context_detach_all(struct ocxl_afu *afu);
|
2018-01-23 14:31:41 +03:00
|
|
|
|
2019-03-27 08:31:32 +03:00
|
|
|
int ocxl_sysfs_register_afu(struct ocxl_file_info *info);
|
|
|
|
void ocxl_sysfs_unregister_afu(struct ocxl_file_info *info);
|
2018-01-23 14:31:41 +03:00
|
|
|
|
2019-03-27 08:31:34 +03:00
|
|
|
int ocxl_irq_offset_to_id(struct ocxl_context *ctx, u64 offset);
|
|
|
|
u64 ocxl_irq_id_to_offset(struct ocxl_context *ctx, int irq_id);
|
2019-03-25 08:34:54 +03:00
|
|
|
void ocxl_afu_irq_free_all(struct ocxl_context *ctx);
|
2018-01-23 14:31:42 +03:00
|
|
|
|
2018-01-23 14:31:41 +03:00
|
|
|
#endif /* _OCXL_INTERNAL_H_ */
|