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6937db210f
- Add CBC carveout suport in nvmap. - Chunk size for CBC is 2MB, hence each bit from bitmap for CBC carveout indicate 2MB physically contiguous chunk. - In case of allocation from CBC, first try to allocate the entire chunk in physically contiguous manner, if it's not possible then allocate in chunks of 2MB. All page pointers to these chunks will be stored in nvmap_handle struct. - Modify all other operations like vmap, kmap, mmap as per the above restrictions. Bug 3956637 Change-Id: I7c304b0127c8fef028e135a4662ab3ad3dc1d1f6 Signed-off-by: Ketan Patil <ketanp@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2880662 Reviewed-by: Krishna Reddy <vdumpa@nvidia.com> Reviewed-by: Sachin Nikam <snikam@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2885806 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com> Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com> GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com> Tested-by: Laxman Dewangan <ldewangan@nvidia.com>
116 lines
3.4 KiB
C
116 lines
3.4 KiB
C
/*
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* include/linux/nvmap.h
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*
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* structure declarations for nvmem and nvmap user-space ioctls
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*
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* Copyright (c) 2009-2023, NVIDIA CORPORATION. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#ifndef _LINUX_NVMAP_H
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#define _LINUX_NVMAP_H
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#include <linux/rbtree.h>
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#include <linux/file.h>
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#include <linux/dma-buf.h>
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#include <linux/device.h>
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#include <linux/version.h>
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#include <uapi/linux/nvmap.h>
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#define NVMAP_HEAP_IOVMM (1ul<<30)
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/* common carveout heaps */
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#define NVMAP_HEAP_CARVEOUT_VPR (1ul<<28)
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#define NVMAP_HEAP_CARVEOUT_TSEC (1ul<<27)
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#define NVMAP_HEAP_CARVEOUT_VIDMEM (1ul<<26)
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#define NVMAP_HEAP_CARVEOUT_CBC (1ul << 3)
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#define NVMAP_HEAP_CARVEOUT_FSI (1ul<<2)
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#define NVMAP_HEAP_CARVEOUT_IVM (1ul<<1)
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#define NVMAP_HEAP_CARVEOUT_GENERIC (1ul<<0)
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#define NVMAP_HEAP_CARVEOUT_MASK (NVMAP_HEAP_IOVMM - 1)
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/* allocation flags */
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#define NVMAP_HANDLE_UNCACHEABLE (0x0ul << 0)
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#define NVMAP_HANDLE_WRITE_COMBINE (0x1ul << 0)
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#define NVMAP_HANDLE_INNER_CACHEABLE (0x2ul << 0)
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#define NVMAP_HANDLE_CACHEABLE (0x3ul << 0)
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#define NVMAP_HANDLE_CACHE_FLAG (0x3ul << 0)
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#define NVMAP_HANDLE_SECURE (0x1ul << 2)
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#define NVMAP_HANDLE_KIND_SPECIFIED (0x1ul << 3)
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#define NVMAP_HANDLE_COMPR_SPECIFIED (0x1ul << 4)
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#define NVMAP_HANDLE_ZEROED_PAGES (0x1ul << 5)
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#define NVMAP_HANDLE_PHYS_CONTIG (0x1ul << 6)
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#define NVMAP_HANDLE_CACHE_SYNC (0x1ul << 7)
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#define NVMAP_HANDLE_CACHE_SYNC_AT_RESERVE (0x1ul << 8)
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#define NVMAP_HANDLE_RO (0x1ul << 9)
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#ifdef NVMAP_CONFIG_PAGE_POOLS
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ulong nvmap_page_pool_get_unused_pages(void);
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#else
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static inline ulong nvmap_page_pool_get_unused_pages(void)
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{
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return 0;
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}
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#endif
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 15, 0)
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ulong nvmap_iovmm_get_used_pages(void);
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#endif
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int nvmap_register_vidmem_carveout(struct device *dma_dev,
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phys_addr_t base, size_t size);
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/*
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* A heap can be mapped to memory other than DRAM.
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* The HW, controls the memory, can be power gated/ungated
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* based upon the clients using the memory.
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* if no client/alloc happens from the memory, the HW needs
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* to be power gated. Similarly it should power ungated if
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* alloc happens from the memory.
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* int (*busy)(void) - trigger runtime power ungate
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* int (*idle)(void) - trigger runtime power gate
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*/
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struct nvmap_pm_ops {
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int (*busy)(void);
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int (*idle)(void);
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};
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struct nvmap_platform_carveout {
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const char *name;
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unsigned int usage_mask;
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phys_addr_t base;
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size_t size;
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struct device *cma_dev;
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bool resize;
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struct device *dma_dev;
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struct device dev;
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struct dma_declare_info *dma_info;
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bool is_ivm;
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unsigned int peer;
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unsigned int vmid;
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int can_alloc;
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bool enable_static_dma_map;
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bool disable_dynamic_dma_map;
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bool no_cpu_access; /* carveout can't be accessed from cpu at all */
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bool init_done; /* FIXME: remove once all caveouts use reserved-memory */
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struct nvmap_pm_ops pm_ops;
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bool is_cbc; /* cbc carveout is treated differently */
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};
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struct nvmap_platform_data {
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const struct nvmap_platform_carveout *carveouts;
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unsigned int nr_carveouts;
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};
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#endif /* _LINUX_NVMAP_H */
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