| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/reserved-memory/ |
| D | reserved-memory.txt | 1 *** Reserved memory regions ***
3 Reserved memory is specified as a node under the /reserved-memory node.
4 The operating system shall exclude reserved memory from normal usage
5 one can create child nodes describing particular reserved (excluded from
6 normal use) memory regions. Such memory regions are usually designed for
9 Parameters for each memory region can be encoded into the device tree
12 /reserved-memory node
13 ---------------------
14 #address-cells, #size-cells (required) - standard definition
15 - Should use the same values as the root node
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| /kernel/linux/linux-4.19/Documentation/devicetree/bindings/reserved-memory/ |
| D | reserved-memory.txt | 1 *** Reserved memory regions ***
3 Reserved memory is specified as a node under the /reserved-memory node.
4 The operating system shall exclude reserved memory from normal usage
5 one can create child nodes describing particular reserved (excluded from
6 normal use) memory regions. Such memory regions are usually designed for
9 Parameters for each memory region can be encoded into the device tree
12 /reserved-memory node
13 ---------------------
14 #address-cells, #size-cells (required) - standard definition
15 - Should use the same values as the root node
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| /kernel/linux/linux-4.19/Documentation/powerpc/ |
| D | firmware-assisted-dump.txt | 2 Firmware-Assisted Dump
3 ------------------------
6 The goal of firmware-assisted dump is to enable the dump of
7 a crashed system, and to do so from a fully-reset system, and
11 - Firmware assisted dump (fadump) infrastructure is intended to replace
13 - Fadump uses the same firmware interfaces and memory reservation model
15 - Unlike phyp dump, fadump exports the memory dump through /proc/vmcore
18 - Unlike phyp dump, userspace tool does not need to refer any sysfs
20 - Unlike phyp dump, fadump allows user to release all the memory reserved
22 - Once enabled through kernel boot parameter, fadump can be
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| /kernel/linux/linux-5.10/Documentation/powerpc/ |
| D | firmware-assisted-dump.rst | 2 Firmware-Assisted Dump
7 The goal of firmware-assisted dump is to enable the dump of
8 a crashed system, and to do so from a fully-reset system, and
12 - Firmware-Assisted Dump (FADump) infrastructure is intended to replace
14 - Fadump uses the same firmware interfaces and memory reservation model
16 - Unlike phyp dump, FADump exports the memory dump through /proc/vmcore
19 - Unlike phyp dump, userspace tool does not need to refer any sysfs
21 - Unlike phyp dump, FADump allows user to release all the memory reserved
23 - Once enabled through kernel boot parameter, FADump can be
28 Comparing with kdump or other strategies, firmware-assisted
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| /kernel/linux/linux-5.10/kernel/dma/ |
| D | contiguous.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Contiguous Memory Allocator for DMA mapping framework
4 * Copyright (c) 2010-2011 by Samsung Electronics.
9 * Contiguous Memory Allocator
11 * The Contiguous Memory Allocator (CMA) makes it possible to
12 * allocate big contiguous chunks of memory after the system has
17 * Various devices on embedded systems have no scatter-getter and/or
18 * IO map support and require contiguous blocks of memory to
22 * Such devices often require big memory buffers (a full HD frame
24 * MB of memory), which makes mechanisms such as kmalloc() or
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| /kernel/linux/linux-4.19/kernel/dma/ |
| D | contiguous.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Contiguous Memory Allocator for DMA mapping framework
4 * Copyright (c) 2010-2011 by Samsung Electronics.
19 #include <asm/dma-contiguous.h>
24 #include <linux/dma-contiguous.h>
39 * The size can be set in bytes or as a percentage of the total memory
46 static phys_addr_t size_cmdline = -1;
54 return -EINVAL; in early_cma()
61 if (*p != '-') { in early_cma()
82 for_each_memblock(memory, reg) in cma_early_percent_memory()
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| /kernel/linux/linux-5.10/drivers/staging/media/atomisp/include/hmm/ |
| D | hmm_pool.h | 1 /* SPDX-License-Identifier: GPL-2.0 */
5 * Copyright (c) 2010 Intel Corporation. All Rights Reserved.
40 * struct hmm_pool_ops - memory pool callbacks.
42 * @pool_init: initialize the memory pool.
43 * @pool_exit: uninitialize the memory pool.
44 * @pool_alloc_pages: allocate pages from memory pool.
45 * @pool_free_pages: free pages to memory pool.
46 * @pool_inited: check whether memory pool is initialized.
66 * struct hmm_reserved_pool_info - represents reserved pool private data.
68 * The array is as reserved memory pool.
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| /kernel/linux/linux-4.19/Documentation/devicetree/bindings/remoteproc/ |
| D | ti,davinci-rproc.txt | 4 Binding status: Unstable - Subject to changes for DT representation of clocks
7 The TI Davinci family of SoCs usually contains a TI DSP Core sub-system that
8 is used to offload some of the processor-intensive tasks or algorithms, for
11 The processor cores in the sub-system usually contain additional sub-modules
12 like L1 and/or L2 caches/SRAMs, an Interrupt Controller, an external memory
18 Each DSP Core sub-system is represented as a single DT node.
21 --------------------
24 - compatible: Should be one of the following,
25 "ti,da850-dsp" for DSPs on OMAP-L138 SoCs
27 - reg: Should contain an entry for each value in 'reg-names'.
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/remoteproc/ |
| D | ti,davinci-rproc.txt | 4 Binding status: Unstable - Subject to changes for DT representation of clocks
7 The TI Davinci family of SoCs usually contains a TI DSP Core sub-system that
8 is used to offload some of the processor-intensive tasks or algorithms, for
11 The processor cores in the sub-system usually contain additional sub-modules
12 like L1 and/or L2 caches/SRAMs, an Interrupt Controller, an external memory
18 Each DSP Core sub-system is represented as a single DT node.
21 --------------------
24 - compatible: Should be one of the following,
25 "ti,da850-dsp" for DSPs on OMAP-L138 SoCs
27 - reg: Should contain an entry for each value in 'reg-names'.
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| D | ti,omap-remoteproc.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/remoteproc/ti,omap-remoteproc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Suman Anna <s-anna@ti.com>
13 The OMAP family of SoCs usually have one or more slave processor sub-systems
14 that are used to offload some of the processor-intensive tasks, or to manage
17 The processor cores in the sub-system are usually behind an IOMMU, and may
18 contain additional sub-modules like Internal RAM and/or ROMs, L1 and/or L2
21 The OMAP SoCs usually have a DSP processor sub-system and/or an IPU processor
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| D | ti,k3-dsp-rproc.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/remoteproc/ti,k3-dsp-rproc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Suman Anna <s-anna@ti.com>
13 The TI K3 family of SoCs usually have one or more TI DSP Core sub-systems
14 that are used to offload some of the processor-intensive tasks or algorithms,
17 These processor sub-systems usually contain additional sub-modules like
18 L1 and/or L2 caches/SRAMs, an Interrupt Controller, an external memory
23 Each DSP Core sub-system is represented as a single DT node. Each node has a
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| /kernel/liteos_m/arch/risc-v/nuclei/gcc/nmsis/Core/Include/ |
| D | core_feature_base.h | 2 * Copyright (c) 2019 Nuclei Limited. All rights reserved.
4 * SPDX-License-Identifier: Apache-2.0
10 * www.apache.org/licenses/LICENSE-2.0
47 /** \brief Type of Control and Status Register(CSR), depends on the XLEN defined in RISC-V */
69 …rv_csr_t b:1; /*!< bit: 1 Tentatively reserved for Bit-Manipulation…
71 …rv_csr_t d:1; /*!< bit: 3 Double-precision floating-point extension…
73 …rv_csr_t f:1; /*!< bit: 5 Single-precision floating-point extension…
77 …rv_csr_t j:1; /*!< bit: 9 Tentatively reserved for Dynamically Tran…
78 rv_csr_t _reserved1:1; /*!< bit: 10 Reserved */
79 … l:1; /*!< bit: 11 Tentatively reserved for Decimal Floating-Point e…
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| /kernel/linux/linux-5.10/include/linux/ |
| D | memblock.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
7 * Logical memory blocks.
29 * enum memblock_flags - definition of memory region attributes
43 * struct memblock_region - represents a memory region
46 * @flags: memory region attributes
59 * struct memblock_type - collection of memory regions of certain type
64 * @name: the memory type symbolic name
75 * struct memblock - memblock allocator metadata
78 * @memory: usable memory regions
79 * @reserved: reserved memory regions
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| /kernel/linux/linux-4.19/drivers/of/ |
| D | of_reserved_mem.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Device tree based initialization code for reserved memory.
5 * Copyright (c) 2013, 2015 The Linux Foundation. All Rights Reserved.
12 #define pr_fmt(fmt) "OF: reserved mem: " fmt
42 return -ENOMEM; in early_init_dt_alloc_reserved_memory_arch()
49 return -ENOMEM; in early_init_dt_alloc_reserved_memory_arch()
62 pr_err("Reserved memory not supported, ignoring region 0x%llx%s\n", in early_init_dt_alloc_reserved_memory_arch()
64 return -ENOSYS; in early_init_dt_alloc_reserved_memory_arch()
69 * res_mem_save_node() - save fdt node for second pass initialization
81 rmem->fdt_node = node; in fdt_reserved_mem_save_node()
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/soc/fsl/ |
| D | qman.txt | 3 Copyright (C) 2008 - 2014 Freescale Semiconductor Inc.
7 - QMan Node
8 - QMan Private Memory Nodes
9 - Example
13 The Queue Manager is part of the Data-Path Acceleration Architecture (DPAA). QMan
16 flow-level queuing, is also responsible for congestion management functions such
22 - compatible
26 May include "fsl,<SoC>-qman"
28 - reg
30 Value type: <prop-encoded-array>
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| /kernel/linux/linux-4.19/Documentation/devicetree/bindings/soc/fsl/ |
| D | qman.txt | 3 Copyright (C) 2008 - 2014 Freescale Semiconductor Inc.
7 - QMan Node
8 - QMan Private Memory Nodes
9 - Example
13 The Queue Manager is part of the Data-Path Acceleration Architecture (DPAA). QMan
16 flow-level queuing, is also responsible for congestion management functions such
22 - compatible
26 May include "fsl,<SoC>-qman"
28 - reg
30 Value type: <prop-encoded-array>
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| /kernel/linux/linux-4.19/include/linux/ |
| D | memblock.h | 7 * Logical memory blocks.
24 * enum memblock_flags - definition of memory region attributes
38 * struct memblock_region - represents a memory region
41 * @flags: memory region attributes
54 * struct memblock_type - collection of memory regions of certain type
59 * @name: the memory type symbolic name
70 * struct memblock - memblock allocator metadata
73 * @memory: usabe memory regions
74 * @reserved: reserved memory regions
75 * @physmem: all physical memory
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| /kernel/linux/linux-5.10/drivers/of/ |
| D | of_reserved_mem.c | 1 // SPDX-License-Identifier: GPL-2.0+
3 * Device tree based initialization code for reserved memory.
5 * Copyright (c) 2013, 2015 The Linux Foundation. All Rights Reserved.
12 #define pr_fmt(fmt) "OF: reserved mem: " fmt
39 return -ENOMEM; in early_init_dt_alloc_reserved_memory_arch()
49 * fdt_reserved_mem_save_node() - save fdt node for second pass initialization
61 rmem->fdt_node = node; in fdt_reserved_mem_save_node()
62 rmem->name = uname; in fdt_reserved_mem_save_node()
63 rmem->base = base; in fdt_reserved_mem_save_node()
64 rmem->size = size; in fdt_reserved_mem_save_node()
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| /kernel/linux/linux-4.19/Documentation/devicetree/bindings/media/ |
| D | s5p-mfc.txt | 10 - compatible : value should be either one among the following
11 (a) "samsung,mfc-v5" for MFC v5 present in Exynos4 SoCs
12 (b) "samsung,mfc-v6" for MFC v6 present in Exynos5 SoCs
13 (c) "samsung,mfc-v7" for MFC v7 present in Exynos5420 SoC
14 (d) "samsung,mfc-v8" for MFC v8 present in Exynos5800 SoC
15 (e) "samsung,exynos5433-mfc" for MFC v8 present in Exynos5433 SoC
16 (f) "samsung,mfc-v10" for MFC v10 present in Exynos7880 SoC
18 - reg : Physical base address of the IP registers and length of memory
21 - interrupts : MFC interrupt number to the CPU.
22 - clocks : from common clock binding: handle to mfc clock.
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| /kernel/linux/linux-5.10/Documentation/devicetree/bindings/media/ |
| D | s5p-mfc.txt | 10 - compatible : value should be either one among the following
11 (a) "samsung,mfc-v5" for MFC v5 present in Exynos4 SoCs
12 (b) "samsung,mfc-v6" for MFC v6 present in Exynos5 SoCs
13 (c) "samsung,mfc-v7" for MFC v7 present in Exynos5420 SoC
14 (d) "samsung,mfc-v8" for MFC v8 present in Exynos5800 SoC
15 (e) "samsung,exynos5433-mfc" for MFC v8 present in Exynos5433 SoC
16 (f) "samsung,mfc-v10" for MFC v10 present in Exynos7880 SoC
18 - reg : Physical base address of the IP registers and length of memory
21 - interrupts : MFC interrupt number to the CPU.
22 - clocks : from common clock binding: handle to mfc clock.
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| /kernel/linux/linux-5.10/arch/powerpc/kernel/ |
| D | fadump.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * memory contents. The most of the code implementation has been adapted
32 #include <asm/fadump-internal.h>
56 #define RESERVED_RNGS_SZ 16384 /* 16K - 128 entries */
60 struct fadump_mrange_info reserved_mrange_info = { "reserved", rngs,
70 * fadump_cma_init() - Initialize CMA area from a fadump reserved memory
72 * This function initializes CMA area from fadump reserved memory.
73 * The total size of fadump reserved memory covers for boot memory size
75 * Initialize only the area equivalent to boot memory size for CMA use.
76 * The reamining portion of fadump reserved memory will be not given
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| /kernel/linux/linux-5.10/mm/ |
| D | memblock.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Procedures for maintaining information about logical memory blocks.
35 * Memblock is a method of managing memory regions during the early
36 * boot period when the usual kernel memory allocators are not up and
39 * Memblock views the system memory as collections of contiguous
42 * * ``memory`` - describes the physical memory available to the
43 * kernel; this may differ from the actual physical memory installed
44 * in the system, for instance when the memory is restricted with
46 * * ``reserved`` - describes the regions that were allocated
47 * * ``physmem`` - describes the actual physical memory available during
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| /kernel/linux/linux-5.10/tools/testing/selftests/bpf/verifier/ |
| D | ringbuf.c | 4 /* reserve 8 byte ringbuf memory */
5 BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
10 /* store a pointer to the reserved memory in R6 */
15 BPF_STX_MEM(BPF_DW, BPF_REG_10, BPF_REG_6, -8),
17 BPF_LDX_MEM(BPF_DW, BPF_REG_7, BPF_REG_10, -8),
20 /* submit the reserved ringbuf memory */
22 /* add invalid offset to reserved ringbuf memory */
36 /* reserve 8 byte ringbuf memory */
37 BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
42 /* store a pointer to the reserved memory in R6 */
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| /kernel/linux/linux-5.10/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/ |
| D | nv40.c | 39 #define nv40_instobj(p) container_of((p), struct nv40_instobj, base.memory)
48 nv40_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data) in nv40_instobj_wr32() argument
50 struct nv40_instobj *iobj = nv40_instobj(memory); in nv40_instobj_wr32()
51 iowrite32_native(data, iobj->imem->iomem + iobj->node->offset + offset); in nv40_instobj_wr32()
55 nv40_instobj_rd32(struct nvkm_memory *memory, u64 offset) in nv40_instobj_rd32() argument
57 struct nv40_instobj *iobj = nv40_instobj(memory); in nv40_instobj_rd32()
58 return ioread32_native(iobj->imem->iomem + iobj->node->offset + offset); in nv40_instobj_rd32()
68 nv40_instobj_release(struct nvkm_memory *memory) in nv40_instobj_release() argument
74 nv40_instobj_acquire(struct nvkm_memory *memory) in nv40_instobj_acquire() argument
76 struct nv40_instobj *iobj = nv40_instobj(memory); in nv40_instobj_acquire()
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| /kernel/linux/linux-4.19/drivers/gpu/drm/nouveau/nvkm/subdev/instmem/ |
| D | nv40.c | 39 #define nv40_instobj(p) container_of((p), struct nv40_instobj, base.memory)
48 nv40_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data) in nv40_instobj_wr32() argument
50 struct nv40_instobj *iobj = nv40_instobj(memory); in nv40_instobj_wr32()
51 iowrite32_native(data, iobj->imem->iomem + iobj->node->offset + offset); in nv40_instobj_wr32()
55 nv40_instobj_rd32(struct nvkm_memory *memory, u64 offset) in nv40_instobj_rd32() argument
57 struct nv40_instobj *iobj = nv40_instobj(memory); in nv40_instobj_rd32()
58 return ioread32_native(iobj->imem->iomem + iobj->node->offset + offset); in nv40_instobj_rd32()
68 nv40_instobj_release(struct nvkm_memory *memory) in nv40_instobj_release() argument
74 nv40_instobj_acquire(struct nvkm_memory *memory) in nv40_instobj_acquire() argument
76 struct nv40_instobj *iobj = nv40_instobj(memory); in nv40_instobj_acquire()
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