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e2a1904d46
ADSP host driver is enhanced to be multi-instance
capable and reentrant:
- Trailing unique identifier string in compatible DT property, like
"adsp", "adsp1" or "aon", is used to identify the driver instances
- Each probed driver instance is inserted into a global list, from
which the handle can be fetched using 'nvadsp_get_handle' API
(passing the above unique identifier as argument)
- Above unique identifier is also used as name for the DBFS
directory (containing files like adsp_console, adsp_logger, etc.)
- 'nvadsp_get_handle' is the only exported API; all other APIs are
accessible via function pointers within 'struct nvadsp_handle'
- APIs above maintain one-is-to-one correspondence with all
legacy APIs, with the addition of a new argument
'struct nvadsp_handle *' at the beginning
- Legacy APIs continue to be supported, but they are hardwired to
work only if the kernel probes just one driver instance
- All driver files are cleaned up to not use any global state
variables (necessary for reentrancy)
Bug 3682950
Change-Id: Id5db49e861b2f81716ae8352b36b406654da2bbd
Signed-off-by: Viswanath L <viswanathl@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3092701
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
Reviewed-by: Dara Ramesh <dramesh@nvidia.com>
23 lines
490 B
C
23 lines
490 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/**
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* Copyright (c) 2014-2024, NVIDIA CORPORATION. All rights reserved.
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*/
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#ifndef ADSP_CNSL_DBFS_H
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#define ADSP_CNSL_DBFS_H
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#define ADSP_APP_CTX_MAX 32
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struct nvadsp_cnsl {
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struct device *dev;
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struct nvadsp_mbox shl_snd_mbox;
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struct nvadsp_mbox app_mbox;
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int open_cnt;
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uint64_t adsp_app_ctx_vals[ADSP_APP_CTX_MAX];
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};
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int
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adsp_create_cnsl(struct dentry *adsp_debugfs_root, struct nvadsp_cnsl *cnsl);
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#endif /* ADSP_CNSL_DBFS_H */
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