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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950/* 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; void __iomem *shmem; u64 shmem_size; u32 latency; u32 max_access_rate; u16 min_turnaround_time;};
/* Generic Communications Channel Shared Memory Region */#define PCC_SIGNATURE 0x50434300/* Generic Communications Channel Command Field */#define PCC_CMD_GENERATE_DB_INTR BIT(15)/* Generic Communications Channel Status Field */#define PCC_STATUS_CMD_COMPLETE BIT(0)#define PCC_STATUS_SCI_DOORBELL BIT(1)#define PCC_STATUS_ERROR BIT(2)#define PCC_STATUS_PLATFORM_NOTIFY BIT(3)/* Initiator Responder Communications Channel Flags */#define PCC_CMD_COMPLETION_NOTIFY BIT(0)
#define MAX_PCC_SUBSPACES 256
#ifdef CONFIG_PCCextern 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);#elsestatic 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 */