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nvadsp: Add multi-instance support

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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>
This commit is contained in:
Viswanath L
2024-03-08 21:07:39 +00:00
committed by mobile promotions
parent 9458d6b97f
commit e2a1904d46
17 changed files with 1332 additions and 862 deletions
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6
drivers/platform/tegra/nvadsp/adsp_console_dbfs.h
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@@ -1,15 +1,19 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/**
* Copyright (c) 2014-2023, NVIDIA CORPORATION. All rights reserved.
* Copyright (c) 2014-2024, NVIDIA CORPORATION. All rights reserved.
*/
#ifndef ADSP_CNSL_DBFS_H
#define ADSP_CNSL_DBFS_H
#define ADSP_APP_CTX_MAX 32
struct nvadsp_cnsl {
struct device *dev;
struct nvadsp_mbox shl_snd_mbox;
struct nvadsp_mbox app_mbox;
int open_cnt;
uint64_t adsp_app_ctx_vals[ADSP_APP_CTX_MAX];
};
int