/openbmc/linux/mm/ |
H A D | dmapool.c | 1 // SPDX-License-Identifier: GPL-2.0-only 3 * DMA Pool allocator 9 * This allocator returns small blocks of a given size which are DMA-able by 14 * The current design of this allocator is fairly simple. The pool is 15 * represented by the 'struct dma_pool' which keeps a doubly-linked list of 17 * least 'size' bytes. Free blocks are tracked in an unsorted singly-linked 23 #include <linux/dma-mapping.h> 45 dma_addr_t dma; member 48 struct dma_pool { /* the pool */ 66 dma_addr_t dma; member [all …]
|
H A D | dmapool_test.c | 2 #include <linux/dma-map-ops.h> 3 #include <linux/dma-mapping.h> 12 dma_addr_t dma; member 31 static struct dma_pool *pool; variable 45 p[i].v = dma_pool_alloc(pool, GFP_KERNEL, in dmapool_test_alloc() 46 &p[i].dma); in dmapool_test_alloc() 52 dma_pool_free(pool, p[i].v, p[i].dma); in dmapool_test_alloc() 57 for (--i; i >= 0; i--) in dmapool_test_alloc() 58 dma_pool_free(pool, p[i].v, p[i].dma); in dmapool_test_alloc() 59 return -ENOMEM; in dmapool_test_alloc() [all …]
|
/openbmc/linux/Documentation/devicetree/bindings/reserved-memory/ |
H A D | shared-dma-pool.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 3 --- 4 $id: http://devicetree.org/schemas/reserved-memory/shared-dma-pool.yaml# 5 $schema: http://devicetree.org/meta-schemas/core.yaml# 7 title: /reserved-memory DMA pool 10 - devicetree-spec@vger.kernel.org 13 - $ref: reserved-memory.yaml 18 - const: shared-dma-pool 21 pool of DMA buffers for a set of devices. It can be used by an 22 operating system to instantiate the necessary pool management [all …]
|
/openbmc/linux/lib/ |
H A D | genalloc.c | 1 // SPDX-License-Identifier: GPL-2.0-only 5 * kmalloc/kfree interface. Uses for this includes on-device special 16 * available. If new memory is added to the pool a lock has to be 21 * On architectures that don't have NMI-safe cmpxchg implementation, 26 * Copyright 2005 (C) Jes Sorensen <jes@trained-monkey.org> 42 return chunk->end_addr - chunk->start_addr + 1; in chunk_size() 52 return -EBUSY; in set_bits_ll() 66 return -EBUSY; in clear_bits_ll() 74 * bitmap_set_ll - set the specified number of bits at the specified position 79 * Set @nr bits start from @start in @map lock-lessly. Several users [all …]
|
/openbmc/linux/drivers/gpu/drm/ttm/ |
H A D | ttm_pool.c | 1 // SPDX-License-Identifier: GPL-2.0 OR MIT 30 * Additional to that allocations from the DMA coherent API are pooled as well 35 #include <linux/dma-mapping.h> 51 * struct ttm_pool_dma - Helper object for coherent DMA mappings 53 * @addr: original DMA address returned for the mapping 63 MODULE_PARM_DESC(page_pool_size, "Number of pages in the WC/UC/DMA pool"); 79 static struct page *ttm_pool_alloc_page(struct ttm_pool *pool, gfp_t gfp_flags, in ttm_pool_alloc_page() argument 83 struct ttm_pool_dma *dma; in ttm_pool_alloc_page() local 95 if (!pool->use_dma_alloc) { in ttm_pool_alloc_page() 96 p = alloc_pages_node(pool->nid, gfp_flags, order); in ttm_pool_alloc_page() [all …]
|
/openbmc/linux/drivers/net/ipa/ |
H A D | gsi_trans.h | 1 /* SPDX-License-Identifier: GPL-2.0 */ 3 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. 4 * Copyright (C) 2019-2022 Linaro Ltd. 12 #include <linux/dma-direction.h> 29 * struct gsi_trans - a GSI transaction 41 * @direction: DMA transfer direction (DMA_NONE for commands) 76 * gsi_trans_pool_init() - Initialize a pool of structures for transactions 77 * @pool: GSI transaction pool pointer 78 * @size: Size of elements in the pool 79 * @count: Minimum number of elements in the pool [all …]
|
H A D | gsi_trans.c | 1 // SPDX-License-Identifier: GPL-2.0 3 /* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved. 4 * Copyright (C) 2019-2022 Linaro Ltd. 12 #include <linux/dma-direction.h> 44 * transaction. If a buffer in an operation must be mapped for DMA, this is 75 __le64 addr; /* DMA address */ 81 /* gsi_tre->flags mask values (in CPU byte order) */ 87 int gsi_trans_pool_init(struct gsi_trans_pool *pool, size_t size, u32 count, in gsi_trans_pool_init() argument 94 return -EINVAL; in gsi_trans_pool_init() 96 return -EINVAL; in gsi_trans_pool_init() [all …]
|
/openbmc/linux/drivers/scsi/lpfc/ |
H A D | lpfc_mem.c | 4 * Copyright (C) 2017-2022 Broadcom. All Rights Reserved. The term * 6 * Copyright (C) 2004-2014 Emulex. All rights reserved. * 9 * Portions Copyright (C) 2004-2005 Christoph Hellwig * 17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * 45 #define LPFC_MBUF_POOL_SIZE 64 /* max elements in MBUF safety pool */ 46 #define LPFC_MEM_POOL_SIZE 64 /* max elem in non-DMA safety pool */ 47 #define LPFC_DEVICE_DATA_POOL_SIZE 64 /* max elements in device data pool */ 48 #define LPFC_RRQ_POOL_SIZE 256 /* max elements in non-DMA pool */ 49 #define LPFC_MBX_POOL_SIZE 256 /* max elements in MBX non-DMA pool */ 54 int max_xri = phba->sli4_hba.max_cfg_param.max_xri; in lpfc_mem_alloc_active_rrq_pool_s4() [all …]
|
/openbmc/linux/net/xdp/ |
H A D | xsk_buff_pool.c | 1 // SPDX-License-Identifier: GPL-2.0 11 void xp_add_xsk(struct xsk_buff_pool *pool, struct xdp_sock *xs) in xp_add_xsk() argument 15 if (!xs->tx) in xp_add_xsk() 18 spin_lock_irqsave(&pool->xsk_tx_list_lock, flags); in xp_add_xsk() 19 list_add_rcu(&xs->tx_list, &pool->xsk_tx_list); in xp_add_xsk() 20 spin_unlock_irqrestore(&pool->xsk_tx_list_lock, flags); in xp_add_xsk() 23 void xp_del_xsk(struct xsk_buff_pool *pool, struct xdp_sock *xs) in xp_del_xsk() argument 27 if (!xs->tx) in xp_del_xsk() 30 spin_lock_irqsave(&pool->xsk_tx_list_lock, flags); in xp_del_xsk() 31 list_del_rcu(&xs->tx_list); in xp_del_xsk() [all …]
|
/openbmc/linux/drivers/media/platform/renesas/vsp1/ |
H A D | vsp1_dl.c | 1 // SPDX-License-Identifier: GPL-2.0+ 3 * vsp1_dl.c -- R-Car VSP1 Display List 11 #include <linux/dma-mapping.h> 41 * struct vsp1_dl_ext_header - Extended display list header 43 * @pre_ext_dl_num_cmd: number of pre-extended command bodies to parse 45 * @pre_ext_dl_plist: start address of pre-extended display list bodies 46 * @post_ext_dl_num_cmd: number of post-extended command bodies to parse 47 * @post_ext_dl_plist: start address of post-extended display list bodies 54 * expecting 32-bit accesses. The flags are appropriate to the whole 79 * struct vsp1_pre_ext_dl_body - Pre Extended Display List Body [all …]
|
/openbmc/linux/net/core/ |
H A D | page_pool.c | 1 /* SPDX-License-Identifier: GPL-2.0 16 #include <linux/dma-direction.h> 17 #include <linux/dma-mapping.h> 18 #include <linux/page-flags.h> 33 #define alloc_stat_inc(pool, __stat) (pool->alloc_stats.__stat++) argument 35 #define recycle_stat_inc(pool, __stat) \ argument 37 struct page_pool_recycle_stats __percpu *s = pool->recycle_stats; \ 38 this_cpu_inc(s->__stat); \ 41 #define recycle_stat_add(pool, __stat, val) \ argument 43 struct page_pool_recycle_stats __percpu *s = pool->recycle_stats; \ [all …]
|
/openbmc/linux/include/net/page_pool/ |
H A D | helpers.h | 1 /* SPDX-License-Identifier: GPL-2.0 12 * uses one frame per-page, but it can fallback on the 19 * The API keeps track of in-flight pages, in order to let API users know 22 * the page to a page_pool-aware object like skbs marked with 27 * release the DMA mapping and in-flight state accounting. 40 * Drivers that wish to harvest page pool stats and report them to users 42 * struct page_pool_stats call page_pool_get_stats to get stats for the specified pool. 44 bool page_pool_get_stats(struct page_pool *pool, 64 * page_pool_dev_alloc_pages() - allocate a page. 65 * @pool: pool from which to allocate [all …]
|
H A D | types.h | 1 /* SPDX-License-Identifier: GPL-2.0 */ 6 #include <linux/dma-direction.h> 9 #define PP_FLAG_DMA_MAP BIT(0) /* Should page_pool do the DMA 14 * DMA-synced-for-device according to 17 * Please note DMA-sync-for-CPU is still 29 * use-case. The NAPI budget is 64 packets. After a NAPI poll the RX 33 * Keeping room for more objects, is due to XDP_DROP use-case. As 47 * struct page_pool_params - page pool parameters 52 * @dev: device, for DMA pre-mapping purposes 54 * @dma_dir: DMA mapping direction [all …]
|
/openbmc/linux/include/net/ |
H A D | xsk_buff_pool.h | 1 /* SPDX-License-Identifier: GPL-2.0 */ 9 #include <linux/dma-mapping.h> 27 dma_addr_t dma; member 29 struct xsk_buff_pool *pool; member 65 /* For performance reasons, each buff pool has its own array of dma_pages 94 * The low 12-bits of the addr will be 0 since this is the page address, so we 103 int xp_assign_dev(struct xsk_buff_pool *pool, struct net_device *dev, 105 int xp_assign_dev_shared(struct xsk_buff_pool *pool, struct xdp_sock *umem_xs, 107 int xp_alloc_tx_descs(struct xsk_buff_pool *pool, struct xdp_sock *xs); 108 void xp_destroy(struct xsk_buff_pool *pool); [all …]
|
/openbmc/linux/arch/arm64/boot/dts/ti/ |
H A D | k3-j721e-som-p0.dtsi | 1 // SPDX-License-Identifier: GPL-2.0 3 * Copyright (C) 2019-2020 Texas Instruments Incorporated - https://www.ti.com/ 8 /dts-v1/; 10 #include "k3-j721e.dtsi" 20 reserved_memory: reserved-memory { 21 #address-cells = <2>; 22 #size-cells = <2>; 28 no-map; 31 mcu_r5fss0_core0_dma_memory_region: r5f-dma-memory@a0000000 { 32 compatible = "shared-dma-pool"; [all …]
|
H A D | k3-j784s4-evm.dts | 1 // SPDX-License-Identifier: GPL-2.0 3 * Copyright (C) 2022 Texas Instruments Incorporated - https://www.ti.com/ 8 /dts-v1/; 10 #include <dt-bindings/net/ti-dp83867.h> 11 #include <dt-bindings/gpio/gpio.h> 12 #include "k3-j784s4.dtsi" 15 compatible = "ti,j784s4-evm", "ti,j784s4"; 19 stdout-path = "serial2:115200n8"; 39 reserved_memory: reserved-memory { 40 #address-cells = <2>; [all …]
|
H A D | k3-am642-tqma64xxl.dtsi | 1 // SPDX-License-Identifier: GPL-2.0-only 3 * Copyright (C) 2021 Texas Instruments Incorporated - https://www.ti.com/ 4 * Copyright (c) 2022-2023 TQ-Systems GmbH <linux@ew.tq-group.com>, D-82229 Seefeld, Germany. 7 #include "k3-am642.dtsi" 18 /* 1G RAM - default variant */ 23 reserved-memory { 24 #address-cells = <2>; 25 #size-cells = <2>; 31 no-map; 34 main_r5fss0_core0_dma_memory_region: r5f-dma-memory@a0000000 { [all …]
|
/openbmc/linux/drivers/net/ethernet/ti/ |
H A D | k3-cppi-desc-pool.c | 1 // SPDX-License-Identifier: GPL-2.0 2 /* TI K3 CPPI5 descriptors pool API 4 * Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com 10 #include <linux/dma-mapping.h> 15 #include "k3-cppi-desc-pool.h" 27 void k3_cppi_desc_pool_destroy(struct k3_cppi_desc_pool *pool) in k3_cppi_desc_pool_destroy() argument 29 if (!pool) in k3_cppi_desc_pool_destroy() 32 WARN(gen_pool_size(pool->gen_pool) != gen_pool_avail(pool->gen_pool), in k3_cppi_desc_pool_destroy() 34 gen_pool_size(pool->gen_pool), in k3_cppi_desc_pool_destroy() 35 gen_pool_avail(pool->gen_pool)); in k3_cppi_desc_pool_destroy() [all …]
|
/openbmc/linux/drivers/soc/ti/ |
H A D | knav_qmss_queue.c | 1 // SPDX-License-Identifier: GPL-2.0-only 5 * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com 12 #include <linux/dma-mapping.h> 42 * are to be re-defined 55 (kdev->instances + (idx << kdev->inst_shift)) 58 list_for_each_entry_rcu(qh, &inst->handles, list, \ 62 for (idx = 0, inst = kdev->instances; \ 63 idx < (kdev)->num_queues_in_use; \ 82 * @inst: - qmss queue instance like accumulator 93 if (atomic_read(&qh->notifier_enabled) <= 0) in knav_queue_notify() [all …]
|
/openbmc/linux/include/linux/ |
H A D | genalloc.h | 1 /* SPDX-License-Identifier: GPL-2.0-only */ 5 * kmalloc/kfree interface. Uses for this includes on-device special 16 * available. If new memory is added to the pool a lock has to be 21 * On architectures that don't have NMI-safe cmpxchg implementation, 46 * @pool: the pool being allocated from 52 void *data, struct gen_pool *pool, 56 * General purpose special memory pool descriptor. 60 struct list_head chunks; /* list of chunks in this pool */ 70 * General purpose special memory pool chunk descriptor. 73 struct list_head next_chunk; /* next chunk in pool */ [all …]
|
/openbmc/linux/drivers/usb/core/ |
H A D | buffer.c | 1 // SPDX-License-Identifier: GPL-2.0 3 * DMA memory management for framework level HCD code (hc_driver) 17 #include <linux/dma-mapping.h> 25 * DMA-Coherent Buffers 28 /* FIXME tune these based on pool statistics ... */ 44 pool_max[0] = 0; /* Don't use this pool */ in usb_init_pool_max() 52 * hcd_buffer_create - initialize buffer pools 57 * Call this as part of initializing a host controller that uses the dma 58 * memory allocators. It initializes some pools of dma-coherent memory that 70 if (hcd->localmem_pool || !hcd_uses_dma(hcd)) in hcd_buffer_create() [all …]
|
/openbmc/linux/kernel/dma/ |
H A D | swiotlb.c | 1 // SPDX-License-Identifier: GPL-2.0-only 3 * Dynamic DMA mapping support. 6 * I/O TLBs (aka DMA address translation hardware). 9 * Copyright (C) 2000, 2003 Hewlett-Packard Co 10 * David Mosberger-Tang <davidm@hpl.hp.com> 12 * 03/05/07 davidm Switch from PCI-DMA to generic device DMA API. 14 * unnecessary i-cache flushing. 27 #include <linux/dma-direct.h> 28 #include <linux/dma-map-ops.h> 33 #include <linux/iommu-helper.h> [all …]
|
H A D | pool.c | 1 // SPDX-License-Identifier: GPL-2.0 8 #include <linux/dma-map-ops.h> 9 #include <linux/dma-direct.h> 26 /* Dynamic background expansion when the atomic pool is near capacity */ 71 end = cma_get_base(cma) + size - 1; in cma_in_zone() 79 static int atomic_pool_expand(struct gen_pool *pool, size_t pool_size, in atomic_pool_expand() argument 85 int ret = -ENOMEM; in atomic_pool_expand() 97 } while (!page && order-- > 0); in atomic_pool_expand() 113 * Memory in the atomic DMA pools must be unencrypted, the pools do not in atomic_pool_expand() 114 * shrink so no re-encryption occurs in dma_direct_free(). in atomic_pool_expand() [all …]
|
/openbmc/linux/drivers/scsi/megaraid/ |
H A D | megaraid_ioctl.h | 1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 6 * Copyright (c) 2003-2004 LSI Logic Corporation. 31 * con_log() - console log routine 86 * struct uioc_t - the common ioctl packet structure 93 * @cmdbuf : Pointer to buffer - can point to mbox or plain data buffer 104 * @list : for kioc free pool list maintenance 106 * @buf_vaddr : dma pool buffer attached to kioc for data transfer 107 * @buf_paddr : physical address of the dma pool buffer 108 * @pool_index : index of the dma pool that @buf_vaddr is taken from 153 /* For on-stack uioc timers. */ [all …]
|
/openbmc/linux/arch/arm/boot/dts/st/ |
H A D | stm32mp157a-microgea-stm32mp1.dtsi | 1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) 3 * Copyright (c) STMicroelectronics 2019 - All Rights Reserved 9 compatible = "engicam,microgea-stm32mp1", "st,stm32mp157"; 16 reserved-memory { 17 #address-cells = <1>; 18 #size-cells = <1>; 22 compatible = "shared-dma-pool"; 24 no-map; 28 compatible = "shared-dma-pool"; 30 no-map; [all …]
|