36 lines
807 B
C
36 lines
807 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* PCC (Platform Communications Channel) methods
|
|
*/
|
|
|
|
#ifndef _PCC_H
|
|
#define _PCC_H
|
|
|
|
#include <linux/mailbox_controller.h>
|
|
#include <linux/mailbox_client.h>
|
|
|
|
struct pcc_mbox_chan {
|
|
struct mbox_chan *mchan;
|
|
u64 shmem_base_addr;
|
|
u64 shmem_size;
|
|
u32 latency;
|
|
u32 max_access_rate;
|
|
u16 min_turnaround_time;
|
|
};
|
|
|
|
#define MAX_PCC_SUBSPACES 256
|
|
#ifdef CONFIG_PCC
|
|
extern struct pcc_mbox_chan *
|
|
pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id);
|
|
extern void pcc_mbox_free_channel(struct pcc_mbox_chan *chan);
|
|
#else
|
|
static inline struct pcc_mbox_chan *
|
|
pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id)
|
|
{
|
|
return ERR_PTR(-ENODEV);
|
|
}
|
|
static inline void pcc_mbox_free_channel(struct pcc_mbox_chan *chan) { }
|
|
#endif
|
|
|
|
#endif /* _PCC_H */
|