| Thomas Gleixner | b886d83c | 2019-06-01 10:08:55 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| Hoan Tran | 866ae69 | 2016-06-16 14:09:38 -0700 | [diff] [blame] | 2 | /* |
| 3 | * PCC (Platform Communications Channel) methods |
| Hoan Tran | 866ae69 | 2016-06-16 14:09:38 -0700 | [diff] [blame] | 4 | */ |
| 5 | |
| 6 | #ifndef _PCC_H |
| 7 | #define _PCC_H |
| 8 | |
| 9 | #include <linux/mailbox_controller.h> |
| 10 | #include <linux/mailbox_client.h> |
| 11 | |
| Sudeep Holla | 0f2591e | 2021-09-17 14:33:49 +0100 | [diff] [blame] | 12 | struct pcc_mbox_chan { |
| 13 | struct mbox_chan *mchan; |
| 14 | u64 shmem_base_addr; |
| 15 | u64 shmem_size; |
| 16 | u32 latency; |
| 17 | u32 max_access_rate; |
| 18 | u16 min_turnaround_time; |
| 19 | }; |
| 20 | |
| George Cherian | c4b766c | 2017-10-11 08:54:57 +0000 | [diff] [blame] | 21 | #define MAX_PCC_SUBSPACES 256 |
| Hoan Tran | 866ae69 | 2016-06-16 14:09:38 -0700 | [diff] [blame] | 22 | #ifdef CONFIG_PCC |
| Sudeep Holla | 7b6da7f | 2021-09-17 14:33:50 +0100 | [diff] [blame] | 23 | extern struct pcc_mbox_chan * |
| 24 | pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id); |
| 25 | extern void pcc_mbox_free_channel(struct pcc_mbox_chan *chan); |
| Hoan Tran | 866ae69 | 2016-06-16 14:09:38 -0700 | [diff] [blame] | 26 | #else |
| Sudeep Holla | 7b6da7f | 2021-09-17 14:33:50 +0100 | [diff] [blame] | 27 | static inline struct pcc_mbox_chan * |
| 28 | pcc_mbox_request_channel(struct mbox_client *cl, int subspace_id) |
| Hoan Tran | 866ae69 | 2016-06-16 14:09:38 -0700 | [diff] [blame] | 29 | { |
| Hoan Tran | d0679cf | 2016-10-14 16:20:21 -0700 | [diff] [blame] | 30 | return ERR_PTR(-ENODEV); |
| Hoan Tran | 866ae69 | 2016-06-16 14:09:38 -0700 | [diff] [blame] | 31 | } |
| Sudeep Holla | 7b6da7f | 2021-09-17 14:33:50 +0100 | [diff] [blame] | 32 | static inline void pcc_mbox_free_channel(struct pcc_mbox_chan *chan) { } |
| Hoan Tran | 866ae69 | 2016-06-16 14:09:38 -0700 | [diff] [blame] | 33 | #endif |
| 34 | |
| 35 | #endif /* _PCC_H */ |