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/linux/Documentation/devicetree/bindings/fpga/
H A Dfpga-region.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/fpga/fpga-region.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: FPGA Region
10 - Michal Simek <michal.simek@amd.com>
14 - Introduction
15 - Terminology
16 - Sequence
17 - FPGA Region
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/linux/drivers/ata/
H A Dsata_nv.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * sata_nv.c - NVIDIA nForce SATA
9 * as Documentation/driver-api/libata.rst
14 * NV-specific details such as register offsets, SATA phy location,
19 * This allows the use of NCQ. Non-DMA-mapped ATA commands are still
84 NV_ADMA_SGTBL_LEN = (1024 - NV_ADMA_CPB_SZ) /
188 /* ADMA Physical Region Descriptor - one SG segment */
199 WNB = (1 << 14), /* wait-not-BSY */
219 __le16 reserved2; /* 6-7 */
220 __le16 tf[12]; /* 8-31 */
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H A Dlibata-sff.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * libata-sff.c - helper library for PCI IDE BMDMA
5 * Copyright 2003-2006 Red Hat, Inc. All rights reserved.
6 * Copyright 2003-2006 Jeff Garzik
9 * as Documentation/driver-api/libata.rst
12 * http://www.sata-io.org/
32 .freeze = ata_sff_freeze,
53 * ata_sff_check_status - Read device status reg & clear interrupt
56 * Reads ATA taskfile status register for currently-selected device
65 return ioread8(ap->ioaddr.status_addr); in ata_sff_check_status()
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H A Dsata_mv.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * sata_mv.c - Marvell SATA support
5 * Copyright 2008-2009: Marvell Corporation, all rights reserved.
12 * Please ALWAYS copy linux-ide@vger.kernel.org on emails.
18 * --> Develop a low-power-consumption strategy, and implement it.
20 * --> Add sysfs attributes for per-chip / per-HC IRQ coalescing thresholds.
22 * --> [Experiment, Marvell value added] Is it possible to use target
23 * mode to cross-connect two Linux boxes with Marvell cards? If so,
31 * 80x1-B2 errata PCI#11:
34 * should be careful to insert those cards only onto PCI-X bus #0,
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/linux/drivers/ufs/host/
H A Dufs-qcom.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2013-2016, Linux Foundation. All rights reserved.
17 #include <linux/reset-controller.h>
28 #include "ufshcd-pltfrm.h"
29 #include "ufs-qcom.h"
37 /* De-emphasis for gear-5 */
139 * ufs_qcom_config_ice_allocator() - ICE core allocator configuration
145 struct ufs_hba *hba = host->hba; in ufs_qcom_config_ice_allocator()
149 if (!(host->caps & UFS_QCOM_CAP_ICE_CONFIG) || in ufs_qcom_config_ice_allocator()
150 !(host->hba->caps & UFSHCD_CAP_CRYPTO)) in ufs_qcom_config_ice_allocator()
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/linux/Documentation/admin-guide/
H A Dkernel-parameters.txt39 Documentation/arch/m68k/kernel-options.rst.
49 PARISC The PA-RISC architecture is enabled.
64 the Documentation/scsi/ sub-directory.
83 X86-32 X86-32, aka i386 architecture is enabled.
84 X86-64 X86-64 architecture is enabled.
85 X86 Either 32-bit or 64-bit x86 (same as X86-32+X86-64)
94 KNL Is a kernel start-up parameter.
114 force -- enable ACPI if default was off
115 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
116 off -- disable ACPI if default was on
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/linux/drivers/net/ethernet/3com/
H A D3c59x.c3 Written 1996-1999 by Donald Becker.
43 /* Set the copy breakpoint for the copy-only-tiny-frames scheme.
48 /* ARM systems perform better by disregarding the bus-master
49 transfer capability of these cards. -- rmk */
56 /* Tx timeout interval (millisecs) */
98 This is only in the support-all-kernels source code. */
117 The Boomerang size is twice as large as the Vortex -- it has additional
124 code size of a per-interface flag is not worthwhile. */
145 II. Board-specific settings
151 The EEPROM settings for media type and forced-full-duplex are observed.
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/linux/drivers/ufs/core/
H A Dufshcd.c1 // SPDX-License-Identifier: GPL-2.0-or-later
4 * Copyright (C) 2011-2013 Samsung India Software Operations
5 * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
17 #include <linux/blk-pm.h>
32 #include "ufshcd-priv.h"
35 #include "ufs-sysfs.h"
36 #include "ufs-debugfs.h"
37 #include "ufs-fault-injection.h"
39 #include "ufshcd-crypto.h"
49 /* UIC command timeout, unit: ms */
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/linux/drivers/net/ethernet/chelsio/cxgb4/
H A Dt4_hw.c4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
16 * - Redistributions of source code must retain the above
20 * - Redistributions in binary form must reproduce the above
43 * t4_wait_op_done_val - wait until an operation is completed
46 * @mask: a single-bit field within @reg that indicates completion
55 * operation completes and -EAGAIN otherwise.
68 if (--attempts == 0) in t4_wait_op_done_val()
69 return -EAGAIN; in t4_wait_op_done_val()
83 * t4_set_reg_field - set a register field to a value
102 * t4_read_indirect - read indirectly addressed registers
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/linux/drivers/scsi/lpfc/
H A Dlpfc_init.c4 * Copyright (C) 2017-2025 Broadcom. All Rights Reserved. The term *
6 * Copyright (C) 2004-2016 Emulex. All rights reserved. *
9 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
17 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
26 #include <linux/dma-mapping.h>
108 * lpfc_config_port_prep - Perform lpfc initialization prior to config port
117 * 0 - success.
118 * -ERESTART - requests the SLI layer to reset the HBA and try again.
119 * Any other value - indicates an error.
124 lpfc_vpd_t *vp = &phba->vpd; in lpfc_config_port_prep()
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/linux/Documentation/driver-api/media/drivers/
H A Dcx2341x-devel.rst1 .. SPDX-License-Identifier: GPL-2.0
7 -----------------------
12 .. note:: the memory long words are little-endian ('intel format').
21 .. code-block:: none
23 ivtvctl -O min=0x02000000,max=0x020000ff
26 register space :-).
35 .. code-block:: none
37 0x00000000-0x00ffffff Encoder memory space
38 0x00000000-0x0003ffff Encode.rom
39 ???-??? MPEG buffer(s)
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/linux/drivers/net/ethernet/freescale/
H A Dgianfar.c1 // SPDX-License-Identifier: GPL-2.0-or-later
5 * This driver is designed for the non-CPM ethernet controllers
13 * Copyright 2002-2009, 2011-2013 Freescale Semiconductor, Inc.
20 * B-V +1.62
25 * is therefore conveyed through an OF-style device tree.
45 * pre-allocated skb, and so after the skb is passed up to the
93 #include <linux/dma-mapping.h>
115 bdp->bufPtr = cpu_to_be32(buf); in gfar_init_rxbdp()
118 if (bdp == rx_queue->rx_bd_base + rx_queue->rx_ring_size - 1) in gfar_init_rxbdp()
123 bdp->lstatus = cpu_to_be32(lstatus); in gfar_init_rxbdp()
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/linux/drivers/gpu/drm/amd/display/dmub/inc/
H A Ddmub_cmd.h154 * Physical framebuffer address location, 64-bit.
273 * @knee_threshold: Current x-position of ACE knee (u0.16).
293 * union dmub_addr - DMUB physical/virtual 64-bit address.
307 * -dml2_soc_power_management_parameters
308 * -dml2_soc_vmin_clock_limits
512 * 0x1 (bit 0) - Desync Error flag.
517 * 0x2 (bit 1) - State Transition Error flag.
522 * 0x4 (bit 2) - Crc Error flag
527 * 0x8 (bit 3) - Reserved
532 * 0x10 (bit 4) - Incorrect Coasting vtotal checking --> use debug flag to control DPCD write.
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/linux/kernel/
H A Dworkqueue.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * kernel/workqueue.c - generic async execution with shared worker pool
10 * Kai Petzke <wpp@marie.physik.tu-berlin.de>
22 * pools for workqueues which are not bound to any specific CPU - the
25 * Please read Documentation/core-api/workqueue.rst for details.
79 * BH pool is per-CPU and always DISASSOCIATED.
108 UNBOUND_POOL_HASH_ORDER = 6, /* hashed by pool->attrs */
128 WORKER_ID_LEN = 10 + WQ_NAME_LEN, /* "kworker/R-" + WQ_NAME_LEN */
142 * I: Modifiable by initialization/destruction paths and read-only for
148 * L: pool->lock protected. Access with pool->lock held.
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/linux/drivers/scsi/
H A Dadvansys.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * advansys.c - Linux Host Driver for AdvanSys SCSI Adapters
5 * Copyright (c) 1995-2000 Advanced System Products, Inc.
6 * Copyright (c) 2000-2001 ConnectCom Solutions, Inc.
34 #include <linux/dma-mapping.h>
109 #define ASC_CHIP_LATEST_VER_EISA ((ASC_CHIP_MIN_VER_EISA - 1) + 3)
125 * Narrow boards only support 12-byte commands, while wide boards
126 * extend to 16-byte commands.
391 #define ASC_IERR_BIST_PRE_TEST 0x0800 /* BIST pre-test error */
412 * is Ultra-capable or not. These tables let us convert from one to the other.
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/linux/drivers/net/
H A Dvirtio_net.c1 // SPDX-License-Identifier: GPL-2.0-or-later
41 #define VIRTIO_O2F_DELTA (VIRTIO_FEATURES_MAP_MIN - \
67 * at once, the weight is chosen so that the EWMA will be insensitive to short-
134 #define VIRTNET_SQ_STAT(name, m) {name, offsetof(struct virtnet_sq_stats, m), -1}
135 #define VIRTNET_RQ_STAT(name, m) {name, offsetof(struct virtnet_rq_stats, m), -1}
180 {#name, offsetof(struct virtio_net_stats_cvq, name), -1}
183 {#name, offsetof(struct virtio_net_stats_rx_ ## class, rx_ ## name), -1}
186 {#name, offsetof(struct virtio_net_stats_tx_ ## class, tx_ ## name), -1}
542 u16 indir_table_size = vi->has_rss ? vi->rss_indir_table_size : 1; in virtnet_rss_hdr_size()
544 return struct_size(vi->rss_hdr, indirection_table, indir_table_size); in virtnet_rss_hdr_size()
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/linux/include/uapi/linux/
H A Dbpf.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
21 #define BPF_DW 0x18 /* double word (64-bit) */
23 #define BPF_ATOMIC 0xc0 /* atomic memory ops - op type in immediate */
24 #define BPF_XADD 0xc0 /* exclusive add - legacy name */
32 #define BPF_TO_LE 0x00 /* convert to little-endia
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/linux/tools/include/uapi/linux/
H A Dbpf.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
21 #define BPF_DW 0x18 /* double word (64-bit) */
23 #define BPF_ATOMIC 0xc0 /* atomic memory ops - op type in immediate */
24 #define BPF_XADD 0xc0 /* exclusive add - legacy name */
32 #define BPF_TO_LE 0x00 /* convert to little-endia
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