| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| 251 | 45.39% | 5 | 17.86% | |
| 172 | 31.10% | 7 | 25.00% | |
| 57 | 10.31% | 3 | 10.71% | |
| 36 | 6.51% | 7 | 25.00% | |
| 19 | 3.44% | 2 | 7.14% | |
| 13 | 2.35% | 2 | 7.14% | |
| 4 | 0.72% | 1 | 3.57% | |
| 1 | 0.18% | 1 | 3.57% | |
| Total | 553 | 28 |
| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Cornelia Huck | 251 | 45.39% | 5 | 17.86% |
| Dong Jia Shi | 172 | 31.10% | 7 | 25.00% |
| Farhan Ali | 57 | 10.31% | 3 | 10.71% |
| Eric Farman | 36 | 6.51% | 7 | 25.00% |
| Christoph Hellwig | 19 | 3.44% | 2 | 7.14% |
| Jason Gunthorpe | 13 | 2.35% | 2 | 7.14% |
| Kevin Tian | 4 | 0.72% | 1 | 3.57% |
| Greg Kroah-Hartman | 1 | 0.18% | 1 | 3.57% |
| Total | 553 | 28 |
/* SPDX-License-Identifier: GPL-2.0 */ /* * Private stuff for vfio_ccw driver * * Copyright IBM Corp. 2017 * Copyright Red Hat, Inc. 2019 * * Author(s): Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> * Xiao Feng Ren <renxiaof@linux.vnet.ibm.com> * Cornelia Huck <cohuck@redhat.com> */ #ifndef _VFIO_CCW_PRIVATE_H_ #define _VFIO_CCW_PRIVATE_H_ #include <linux/completion.h> #include <linux/eventfd.h> #include <linux/workqueue.h> #include <linux/vfio_ccw.h> #include <linux/vfio.h> #include <linux/mdev.h> #include <asm/crw.h> #include <asm/debug.h> #include "css.h" #include "vfio_ccw_cp.h" #define VFIO_CCW_OFFSET_SHIFT 10 #define VFIO_CCW_OFFSET_TO_INDEX(off) (off >> VFIO_CCW_OFFSET_SHIFT) #define VFIO_CCW_INDEX_TO_OFFSET(index) ((u64)(index) << VFIO_CCW_OFFSET_SHIFT) #define VFIO_CCW_OFFSET_MASK (((u64)(1) << VFIO_CCW_OFFSET_SHIFT) - 1) /* capability chain handling similar to vfio-pci */ struct vfio_ccw_private; struct vfio_ccw_region; struct vfio_ccw_regops { ssize_t (*read)(struct vfio_ccw_private *private, char __user *buf, size_t count, loff_t *ppos); ssize_t (*write)(struct vfio_ccw_private *private, const char __user *buf, size_t count, loff_t *ppos); void (*release)(struct vfio_ccw_private *private, struct vfio_ccw_region *region); }; struct vfio_ccw_region { u32 type; u32 subtype; const struct vfio_ccw_regops *ops; void *data; size_t size; u32 flags; }; int vfio_ccw_register_dev_region(struct vfio_ccw_private *private, unsigned int subtype, const struct vfio_ccw_regops *ops, size_t size, u32 flags, void *data); void vfio_ccw_unregister_dev_regions(struct vfio_ccw_private *private); int vfio_ccw_register_async_dev_regions(struct vfio_ccw_private *private); int vfio_ccw_register_schib_dev_regions(struct vfio_ccw_private *private); int vfio_ccw_register_crw_dev_regions(struct vfio_ccw_private *private); struct vfio_ccw_crw { struct list_head next; struct crw crw; }; /** * struct vfio_ccw_private * @vdev: Embedded VFIO device * @sch: pointer to the subchannel * @state: internal state of the device * @completion: synchronization helper of the I/O completion * @io_region: MMIO region to input/output I/O arguments/results * @io_mutex: protect against concurrent update of I/O regions * @region: additional regions for other subchannel operations * @cmd_region: MMIO region for asynchronous I/O commands other than START * @schib_region: MMIO region for SCHIB information * @crw_region: MMIO region for getting channel report words * @num_regions: number of additional regions * @cp: channel program for the current I/O operation * @irb: irb info received from interrupt * @scsw: scsw info * @io_trigger: eventfd ctx for signaling userspace I/O results * @crw_trigger: eventfd ctx for signaling userspace CRW information * @req_trigger: eventfd ctx for signaling userspace to return device * @io_work: work for deferral process of I/O handling * @crw_work: work for deferral process of CRW handling * @release_comp: synchronization helper for vfio device release * @parent: parent data structures for mdevs created */ struct vfio_ccw_private { struct vfio_device vdev; struct subchannel *sch; int state; struct completion *completion; struct ccw_io_region *io_region; struct mutex io_mutex; struct vfio_ccw_region *region; struct ccw_cmd_region *cmd_region; struct ccw_schib_region *schib_region; struct ccw_crw_region *crw_region; int num_regions; struct channel_program cp; struct irb irb; union scsw scsw; struct list_head crw; struct eventfd_ctx *io_trigger; struct eventfd_ctx *crw_trigger; struct eventfd_ctx *req_trigger; struct work_struct io_work; struct work_struct crw_work; struct completion release_comp; struct mdev_parent parent; struct mdev_type mdev_type; struct mdev_type *mdev_types[1]; } __aligned(8); int vfio_ccw_sch_quiesce(struct subchannel *sch); extern struct mdev_driver vfio_ccw_mdev_driver; /* * States of the device statemachine. */ enum vfio_ccw_state { VFIO_CCW_STATE_NOT_OPER, VFIO_CCW_STATE_STANDBY, VFIO_CCW_STATE_IDLE, VFIO_CCW_STATE_CP_PROCESSING, VFIO_CCW_STATE_CP_PENDING, /* last element! */ NR_VFIO_CCW_STATES }; /* * Asynchronous events of the device statemachine. */ enum vfio_ccw_event { VFIO_CCW_EVENT_NOT_OPER, VFIO_CCW_EVENT_IO_REQ, VFIO_CCW_EVENT_INTERRUPT, VFIO_CCW_EVENT_ASYNC_REQ, VFIO_CCW_EVENT_OPEN, VFIO_CCW_EVENT_CLOSE, /* last element! */ NR_VFIO_CCW_EVENTS }; /* * Action called through jumptable. */ typedef void (fsm_func_t)(struct vfio_ccw_private *, enum vfio_ccw_event); extern fsm_func_t *vfio_ccw_jumptable[NR_VFIO_CCW_STATES][NR_VFIO_CCW_EVENTS]; static inline void vfio_ccw_fsm_event(struct vfio_ccw_private *private, enum vfio_ccw_event event) { trace_vfio_ccw_fsm_event(private->sch->schid, private->state, event); vfio_ccw_jumptable[private->state][event](private, event); } extern struct workqueue_struct *vfio_ccw_work_q; /* s390 debug feature, similar to base cio */ extern debug_info_t *vfio_ccw_debug_msg_id; extern debug_info_t *vfio_ccw_debug_trace_id; #define VFIO_CCW_TRACE_EVENT(imp, txt) \ debug_text_event(vfio_ccw_debug_trace_id, imp, txt) #define VFIO_CCW_MSG_EVENT(imp, args...) \ debug_sprintf_event(vfio_ccw_debug_msg_id, imp, ##args) static inline void VFIO_CCW_HEX_EVENT(int level, void *data, int length) { debug_event(vfio_ccw_debug_trace_id, level, data, length); } #endif