summaryrefslogblamecommitdiff
path: root/include/acpi/pcc.h
blob: 73e806fe7ce70795d79e3fd237844a3baa5fdcf6 (plain) (tree) 
b886d83c5b62 ^

866ae696e26e ^


866ae696e26e ^








0f2591e21b2e ^









c4b766c2f3fc ^

866ae696e26e ^

7b6da7fe7bba ^



866ae696e26e ^

7b6da7fe7bba ^


866ae696e26e ^

d0679cfaf54c ^

866ae696e26e ^

7b6da7fe7bba ^

866ae696e26e ^



1

2
3

4
5
6
7
8
9
10
11

12
13
14
15
16
17
18
19
20

21

22

23
24
25

26

27
28

29

30

31

32

33
34
35

                                           

                                                







                                     








                                
                                   
                 


                                                                  
     

                                                                 
 
                                
 
                                                                        


                   
/* 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 */