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18a165f104
Instead of immediately returning an error when trying to allocate a context device and none are free, log a warning and stall the submit until a usable context becomes available. Bug 4712458 Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Change-Id: I964c906e94a8624ded04a5f3851f8c3dbbe76d8b Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3227684 Reviewed-by: Santosh BS <santoshb@nvidia.com> GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com>
54 lines
1017 B
C
54 lines
1017 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Host1x context devices
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*
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* Copyright (c) 2020, NVIDIA Corporation.
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*/
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#ifndef __HOST1X_CONTEXT_H
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#define __HOST1X_CONTEXT_H
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#include <linux/mutex.h>
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#include <linux/refcount.h>
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struct host1x;
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extern struct bus_type host1x_context_device_bus_type;
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struct host1x_memory_context_list {
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struct mutex lock;
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struct host1x_hw_memory_context *devs;
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unsigned int len;
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struct list_head waiters;
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};
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struct host1x_hw_memory_context {
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struct host1x *host;
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refcount_t ref;
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struct pid *owner;
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struct device dev;
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u64 dma_mask;
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u32 stream_id;
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struct list_head owners;
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unsigned int active;
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};
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#ifdef CONFIG_IOMMU_API
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int host1x_memory_context_list_init(struct host1x *host1x);
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void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl);
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#else
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static inline int host1x_memory_context_list_init(struct host1x *host1x)
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{
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return 0;
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}
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static inline void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl)
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{
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}
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#endif
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#endif
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