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Apple SoCs such as the M1 come with multiple embedded co-processors running proprietary firmware. Communication with those is established over a simple mailbox using the RTKit IPC protocol. This cannot be implemented inside the mailbox subsystem since on top of communication over channels we also need support for starting, hibernating and resetting these co-processors. We also need to handle shared memory allocations differently depending on the co-processor and don't want to split that across multiple drivers. Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sven Peter <sven@svenpeter.dev>
63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only OR MIT */
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/*
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* Apple RTKit IPC library
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* Copyright (C) The Asahi Linux Contributors
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*/
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#ifndef _APPLE_RTKIT_INTERAL_H
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#define _APPLE_RTKIT_INTERAL_H
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#include <linux/apple-mailbox.h>
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#include <linux/bitfield.h>
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#include <linux/bitmap.h>
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#include <linux/completion.h>
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#include <linux/dma-mapping.h>
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/mailbox_client.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/soc/apple/rtkit.h>
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#include <linux/workqueue.h>
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#define APPLE_RTKIT_APP_ENDPOINT_START 0x20
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#define APPLE_RTKIT_MAX_ENDPOINTS 0x100
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struct apple_rtkit {
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void *cookie;
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const struct apple_rtkit_ops *ops;
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struct device *dev;
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const char *mbox_name;
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int mbox_idx;
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struct mbox_client mbox_cl;
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struct mbox_chan *mbox_chan;
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struct completion epmap_completion;
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struct completion iop_pwr_ack_completion;
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struct completion ap_pwr_ack_completion;
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int boot_result;
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int version;
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unsigned int iop_power_state;
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unsigned int ap_power_state;
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bool crashed;
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DECLARE_BITMAP(endpoints, APPLE_RTKIT_MAX_ENDPOINTS);
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struct apple_rtkit_shmem ioreport_buffer;
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struct apple_rtkit_shmem crashlog_buffer;
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struct apple_rtkit_shmem syslog_buffer;
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char *syslog_msg_buffer;
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size_t syslog_n_entries;
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size_t syslog_msg_size;
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struct workqueue_struct *wq;
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};
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void apple_rtkit_crashlog_dump(struct apple_rtkit *rtk, u8 *bfr, size_t size);
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#endif
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