![Alastair D'Silva](/assets/img/avatar_default.png)
In order to successfully issue as_notify, an AFU needs to know the TID to notify, which in turn means that this information should be available in userspace so it can be communicated to the AFU. Signed-off-by: Alastair D'Silva <alastair@d-silva.org> Acked-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
133 lines
3.7 KiB
C
133 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
// Copyright 2017 IBM Corp.
|
|
#ifndef _OCXL_INTERNAL_H_
|
|
#define _OCXL_INTERNAL_H_
|
|
|
|
#include <linux/pci.h>
|
|
#include <linux/cdev.h>
|
|
#include <linux/list.h>
|
|
#include <misc/ocxl.h>
|
|
|
|
#define MAX_IRQ_PER_LINK 2000
|
|
#define MAX_IRQ_PER_CONTEXT MAX_IRQ_PER_LINK
|
|
|
|
#define to_ocxl_function(d) container_of(d, struct ocxl_fn, dev)
|
|
#define to_ocxl_afu(d) container_of(d, struct ocxl_afu, dev)
|
|
|
|
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;
|
|
};
|
|
|
|
struct ocxl_afu {
|
|
struct ocxl_fn *fn;
|
|
struct list_head list;
|
|
struct device dev;
|
|
struct cdev cdev;
|
|
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;
|
|
struct bin_attribute attr_global_mmio;
|
|
};
|
|
|
|
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;
|
|
u16 tidr; // Thread ID used for P9 wait implementation
|
|
};
|
|
|
|
struct ocxl_process_element {
|
|
__be64 config_state;
|
|
__be32 reserved1[11];
|
|
__be32 lpid;
|
|
__be32 tid;
|
|
__be32 pid;
|
|
__be32 reserved2[10];
|
|
__be64 amr;
|
|
__be32 reserved3[3];
|
|
__be32 software_state;
|
|
};
|
|
|
|
|
|
extern struct ocxl_afu *ocxl_afu_get(struct ocxl_afu *afu);
|
|
extern void ocxl_afu_put(struct ocxl_afu *afu);
|
|
|
|
extern int ocxl_create_cdev(struct ocxl_afu *afu);
|
|
extern void ocxl_destroy_cdev(struct ocxl_afu *afu);
|
|
extern int ocxl_register_afu(struct ocxl_afu *afu);
|
|
extern void ocxl_unregister_afu(struct ocxl_afu *afu);
|
|
|
|
extern int ocxl_file_init(void);
|
|
extern void ocxl_file_exit(void);
|
|
|
|
extern int ocxl_pasid_afu_alloc(struct ocxl_fn *fn, u32 size);
|
|
extern void ocxl_pasid_afu_free(struct ocxl_fn *fn, u32 start, u32 size);
|
|
extern int ocxl_actag_afu_alloc(struct ocxl_fn *fn, u32 size);
|
|
extern void ocxl_actag_afu_free(struct ocxl_fn *fn, u32 start, u32 size);
|
|
|
|
extern struct ocxl_context *ocxl_context_alloc(void);
|
|
extern int ocxl_context_init(struct ocxl_context *ctx, struct ocxl_afu *afu,
|
|
struct address_space *mapping);
|
|
extern int ocxl_context_attach(struct ocxl_context *ctx, u64 amr);
|
|
extern int ocxl_context_mmap(struct ocxl_context *ctx,
|
|
struct vm_area_struct *vma);
|
|
extern int ocxl_context_detach(struct ocxl_context *ctx);
|
|
extern void ocxl_context_detach_all(struct ocxl_afu *afu);
|
|
extern void ocxl_context_free(struct ocxl_context *ctx);
|
|
|
|
extern int ocxl_sysfs_add_afu(struct ocxl_afu *afu);
|
|
extern void ocxl_sysfs_remove_afu(struct ocxl_afu *afu);
|
|
|
|
extern int ocxl_afu_irq_alloc(struct ocxl_context *ctx, u64 *irq_offset);
|
|
extern int ocxl_afu_irq_free(struct ocxl_context *ctx, u64 irq_offset);
|
|
extern void ocxl_afu_irq_free_all(struct ocxl_context *ctx);
|
|
extern int ocxl_afu_irq_set_fd(struct ocxl_context *ctx, u64 irq_offset,
|
|
int eventfd);
|
|
extern u64 ocxl_afu_irq_get_addr(struct ocxl_context *ctx, u64 irq_offset);
|
|
|
|
#endif /* _OCXL_INTERNAL_H_ */
|