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/linux/Documentation/devicetree/bindings/usb/
H A Dusb251xb.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Microchip USB 2.0 Hi-Speed Hub Controller
10 - Richard Leitner <richard.leitner@skidata.com>
15 - microchip,usb2422
16 - microchip,usb2512b
17 - microchip,usb2512bi
18 - microchip,usb2513b
19 - microchip,usb2513bi
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/linux/drivers/gpu/drm/ttm/
H A Dttm_pool.c1 // SPDX-License-Identifier: GPL-2.0 OR MIT
35 #include <linux/dma-mapping.h>
52 #include <linux/fault-inject.h>
59 * struct ttm_pool_dma - Helper object for coherent DMA mappings
70 * struct ttm_pool_alloc_state - Current state of the tt page allocation process
71 * @pages: Pointer to the next tt page pointer to populate.
73 * not committed caching transition from write-back to @tt_caching.
74 * @dma_addr: Pointer to the next tt dma_address entry to populate if any.
76 * @tt_caching: The requested cpu-caching for the pages allocated.
87 * struct ttm_pool_tt_restore - State representing restore from backup
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/linux/drivers/usb/host/
H A Dehci-sched.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2001-2004 by David Brownell
4 * Copyright (c) 2003 Michal Sojka, for high-speed iso transfers
7 /* this file is part of ehci-hcd.c */
9 /*-------------------------------------------------------------------------*/
21 * pre-calculated schedule data to make appending to the queue be quick.
27 * periodic_next_shadow - return "next" pointer on shadow list
37 return &periodic->qh->qh_next; in periodic_next_shadow()
39 return &periodic->fstn->fstn_next; in periodic_next_shadow()
41 return &periodic->itd->itd_next; in periodic_next_shadow()
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H A Dxhci-mtk-sch.c1 // SPDX-License-Identifier: GPL-2.0
14 #include "xhci-mtk.h"
18 /* table 5-5. High-speed Isoc Transaction Limits in usb_20 spec */
28 * max number of microframes for split transfer, assume extra-cs budget is 0
55 return "Can't schedule Start-Split in Y6"; in sch_error_string()
57 return "Can't find a suitable Start-Split location"; in sch_error_string()
59 return "The last Complete-Split is greater than 7"; in sch_error_string()
78 struct usb_endpoint_descriptor *epd = &ep->desc; in decode_ep()
94 usb_endpoint_maxp(epd), epd->bInterval, interval, unit); in decode_ep()
130 struct xhci_hcd *xhci = hcd_to_xhci(mtk->hcd); in get_bw_info()
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H A Dxhci-mem.c1 // SPDX-License-Identifier: GPL-2.0
16 #include <linux/dma-mapping.h>
19 #include "xhci-trace.h"
20 #include "xhci-debugfs.h"
36 struct device *dev = xhci_to_hcd(xhci)->self.sysdev; in xhci_segment_alloc()
42 seg->trbs = dma_pool_zalloc(xhci->segment_pool, flags, &dma); in xhci_segment_alloc()
43 if (!seg->trbs) { in xhci_segment_alloc()
49 seg->bounce_buf = kzalloc_node(max_packet, flags, in xhci_segment_alloc()
51 if (!seg->bounce_buf) { in xhci_segment_alloc()
52 dma_pool_free(xhci->segment_pool, seg->trbs, dma); in xhci_segment_alloc()
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H A Dxhci.h1 /* SPDX-License-Identifier: GPL-2.0 */
19 #include <linux/io-64-nonatomic-lo-hi.h>
20 #include <linux/io-64-nonatomic-hi-lo.h>
22 /* Code sharing between pci-quirks and xhci hcd */
23 #include "xhci-ext-caps.h"
24 #include "pci-quirks.h"
26 #include "xhci-port.h"
27 #include "xhci-caps.h"
35 /* Max number of USB devices for any host controller - limit in section 6.1 */
37 /* Section 5.3.3 - MaxPorts */
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H A Dxhci.c1 // SPDX-License-Identifier: GPL-2.0
22 #include <linux/dma-mapping.h>
23 #include <linux/usb/xhci-sideband.h>
26 #include "xhci-trace.h"
27 #include "xhci-debugfs.h"
28 #include "xhci-dbgcap.h"
48 if (!td || !td->start_seg) in td_on_ring()
51 xhci_for_each_ring_seg(ring->first_seg, seg) { in td_on_ring()
52 if (seg == td->start_seg) in td_on_ring()
60 * xhci_handshake - spin reading hc until handshake completes or fails
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/linux/arch/m68k/atari/
H A Dconfig.c10 * gettod() for TT
40 #include <asm/bootinfo-atari.h>
118 * Parse an Atari-specific record in the bootinfo
124 const void *data = record->data; in atari_parse_bootinfo()
126 switch (be16_to_cpu(record->tag)) { in atari_parse_bootinfo()
141 /* Parse the Atari-specific switches= option. */
233 * hardware, we assume that the ST-DMA serves SCSI instead of in config_atari()
238 pr_cont(" STDMA-SCSI"); in config_atari()
265 * The ST-DMA address registers aren't readable in config_atari()
385 /* allocator for memory that must reside in st-ram */ in config_atari()
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/linux/Documentation/sound/hd-audio/
H A Dmodels.rst2 HD-Audio Codec-Specific Models
8 3-jack in back and a headphone out
9 3stack-digout
10 3-jack in back, a HP out and a SPDIF out
12 5-jack in back, 2-jack in front
13 5stack-digout
14 5-jack in back, 2-jack in front, a SPDIF out
16 6-jack in back, 2-jack in front
17 6stack-digout
18 6-jack with a SPDIF out
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/linux/drivers/gpu/drm/xe/
H A Dxe_bo.c1 // SPDX-License-Identifier: MIT
8 #include <linux/dma-buf.h>
87 return res->mem_type == XE_PL_STOLEN && IS_DGFX(xe); in resource_is_stolen_vram()
92 return mem_type_is_vram(res->mem_type); in resource_is_vram()
97 return resource_is_vram(bo->ttm.resource) || in xe_bo_is_vram()
98 resource_is_stolen_vram(xe_bo_device(bo), bo->ttm.resource); in xe_bo_is_vram()
103 return bo->ttm.resource->mem_type == XE_PL_STOLEN; in xe_bo_is_stolen()
107 * xe_bo_has_single_placement - check if BO is placed only in one memory location
117 return bo->placement.num_placement == 1; in xe_bo_has_single_placement()
121 * xe_bo_is_stolen_devmem - check if BO is of stolen type accessed via PCI BAR
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/linux/drivers/usb/core/
H A Dhub.c1 // SPDX-License-Identifier: GPL-2.0
71 /* Protect struct usb_device->state and ->children members
72 * Note: Both are also protected by ->dev.sem, except that ->state can
80 /* synchronize hub-port add/remove and peering operations */
90 * 10 seconds to send reply for the initial 64-byte descriptor request.
92 /* define initial 64-byte descriptor request timeout in milliseconds */
96 "initial 64-byte descriptor request timeout in milliseconds "
97 "(default 5000 - 5.0 seconds)");
141 if (hub_is_superspeedplus(hub->hdev)) in portspeed()
143 if (hub_is_superspeed(hub->hdev)) in portspeed()
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/linux/drivers/net/ethernet/mellanox/mlx5/core/
H A Den_tc.c14 * - Redistributions of source code must retain the above
18 * - Redistributions in binary form must reproduce the above
156 return tc ? tc : ERR_PTR(-ENOMEM); in mlx5e_tc_table_alloc()
166 return tc->chains; in mlx5e_nic_chains()
172 * which call rhashtable_destroy on fg->ftes_hash which will take ht->mutex but
173 * it's different than the ht->mutex here.
189 void *headers_c = spec->match_criteria, *headers_v = spec->match_value, *fmask, *fval; in mlx5e_tc_match_to_reg_match()
193 u32 max_mask = GENMASK(match_len - 1, 0); in mlx5e_tc_match_to_reg_match()
227 spec->match_criteria_enable |= MLX5_MATCH_MISC_PARAMETERS_2; in mlx5e_tc_match_to_reg_match()
236 void *headers_c = spec->match_criteria, *headers_v = spec->match_value, *fmask, *fval; in mlx5e_tc_match_to_reg_get_match()
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/linux/include/linux/usb/
H A Dhcd.h1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright (c) 2001-2002 by David Brownell
42 /*-------------------------------------------------------------------------*/
51 /*-------------------------------------------------------------------------*/
73 struct usb_bus self; /* hcd is-a bus */
79 * hcd->driver->flags & HCD_MASK
83 struct timer_list rh_timer; /* drives root-hub polling */
93 const struct hc_driver *driver; /* hw-specific hooks */
97 * other external phys should be software-transparent
119 #define HCD_HW_ACCESSIBLE(hcd) ((hcd)->flags & (1U << HCD_FLAG_HW_ACCESSIBLE))
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/linux/drivers/isdn/mISDN/
H A Ddsp_cmx.c20 * There are 3 different solutions: -1 = software, 0 = hardware-crossconnect
21 * 1-n = hardware-conference. The n will give the conference number.
39 * - Crossconnecting or even conference, if more than two members are together.
40 * - Force mixing of transmit data with other crossconnect/conference members.
41 * - Echo generation to benchmark the delay of audio processing.
42 * - Use hardware to minimize cpu load, disable FIFO load and minimize delay.
43 * - Dejittering and clock generation.
48 * RX-Buffer
51 * ----------------+-------------+-------------------
53 * The rx-buffer is a ring buffer used to store the received data for each
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/linux/net/batman-adv/
H A Dmain.h1 /* SPDX-License-Identifier: GPL-2.0 */
13 #define BATADV_DRIVER_DEVICE "batman-adv"
25 #define BATADV_MAX_MTU (ETH_MAX_MTU - batadv_max_header_len())
34 * -> TODO: check influence on BATADV_TQ_LOCAL_WINDOW_SIZE
65 /* number of OGMs sent with the last tt diff */
80 /* default interface for multi interface operation. The default interface is
102 /* BATADV_TQ_SIMILARITY_THRESHOLD - TQ points that a secondary metric can differ
127 * BATADV_TP_MAX_NUM - maximu
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/linux/rust/kernel/
H A Dworkqueue.rs1 // SPDX-License-Identifier: GPL-2.0
11 //! generic, they are used only at compile-time, so they shouldn't exist in the final binary.
51 //! fn new(value: i32) -> Result<Arc<Self>> {
54 //! work <- new_work!("MyStruct::work"),
97 //! fn new(value_1: i32, value_2: i32) -> Result<Arc<Self>> {
101 //! work_1 <- new_work!("MyStruct::work_1"),
102 //! work_2 <- new_work!("MyStruct::work_2"),
140 /// Creates a [`Work`] initialiser with the given name and a newly-created lock class.
158 // SAFETY: Accesses to workqueues used by [`Queue`] are thread-safe.
160 // SAFETY: Accesses to workqueues used by [`Queue`] are thread-safe.
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/linux/drivers/usb/dwc2/
H A Dhcd_queue.c1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
3 * hcd_queue.c - DesignWare HS OTG Controller host queuing routines
5 * Copyright (C) 2004-2013 Synopsys, Inc.
17 #include <linux/dma-mapping.h>
36 * dwc2_periodic_channel_available() - Checks that a channel is available for a
48 * non-periodic transactions in dwc2_periodic_channel_available()
53 num_channels = hsotg->params.host_channels; in dwc2_periodic_channel_available()
54 if ((hsotg->periodic_channels + hsotg->non_periodic_channels < in dwc2_periodic_channel_available()
55 num_channels) && (hsotg->periodic_channels < num_channels - 1)) { in dwc2_periodic_channel_available()
58 dev_dbg(hsotg->dev, in dwc2_periodic_channel_available()
[all …]
H A Dhcd.c1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
3 * hcd.c - DesignWare HS OTG Controller host-mode routines
5 * Copyright (C) 2004-2013 Synopsys, Inc.
17 #include <linux/dma-mapping.h>
37 * dwc2_enable_common_interrupts() - Initializes the commmon interrupts,
55 if (!hsotg->params.host_dma) in dwc2_enable_common_interrupts()
57 if (!hsotg->params.external_id_pin_ctl) in dwc2_enable_common_interrupts()
63 if (dwc2_is_device_mode(hsotg) && hsotg->params.lpm) in dwc2_enable_common_interrupts()
73 switch (hsotg->hw_params.arch) { in dwc2_gahbcfg_init()
75 dev_err(hsotg->dev, "External DMA Mode not supported\n"); in dwc2_gahbcfg_init()
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/linux/Documentation/admin-guide/media/
H A Dbttv.rst1 .. SPDX-License-Identifier: GPL-2.0
8 ----------------------
12 ./scripts/config -e PCI
13 ./scripts/config -m I2C
14 ./scripts/config -m INPUT
15 ./scripts/config -m MEDIA_SUPPORT
16 ./scripts/config -e MEDIA_PCI_SUPPORT
17 ./scripts/config -e MEDIA_ANALOG_TV_SUPPORT
18 ./scripts/config -e MEDIA_DIGITAL_TV_SUPPORT
19 ./scripts/config -e MEDIA_RADIO_SUPPORT
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/linux/drivers/usb/isp1760/
H A Disp1760-hcd.c1 // SPDX-License-Identifier: GPL-2.0
6 * - ISO
7 * - OTG
33 #include "isp1760-core.h"
34 #include "isp1760-hcd.h"
35 #include "isp1760-regs.h"
46 return *(struct isp1760_hcd **)hcd->hcd_priv; in hcd_to_priv()
150 /* the rest is HCD-private */
158 /* QTD_XFER_STARTED: valid ptd has been written to isp176x - only
204 return isp1760_field_read(priv->fields, field); in isp1760_hcd_read()
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/linux/Documentation/gpu/
H A Ddrm-mm.rst6 frame buffers, textures, vertices and other graphics-related data. Given
13 manager to be developed and tried to be a one-size-fits-them all
20 GEM started as an Intel-sponsored project in reaction to TTM's
22 providing a solution to every graphics memory-related problems, GEM
31 .. kernel-doc:: drivers/gpu/drm/ttm/ttm_module.c
34 .. kernel-doc:: include/drm/ttm/ttm_caching.h
38 ---------------------------
40 .. kernel-doc:: include/drm/ttm/ttm_device.h
43 .. kernel-doc:: drivers/gpu/drm/ttm/ttm_device.c
47 --------------------------------
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/linux/sound/oss/dmasound/
H A Ddmasound_core.c5 * OSS/Free compatible Atari TT/Falcon and Amiga DMA sound driver for
12 * interface and the u-law to signed byte conversion.
14 * Michael Marte (marte@informatik.uni-muenchen.de) did the sound queue,
17 * - Michael Schlueter for initial ideas and documentation on the MFP and
19 * - Therapy? for their CD 'Troublegum' which really made me rock.
33 * - Fixed atari_stram_alloc() call, the timer
36 * - After some discussion with Michael Schlueter,
38 * - Slightly speeded up U8->S8 translation by using
40 * - Added 4:3 interpolation for /dev/audio
43 * - Fixed a bug in sq_write and changed /dev/audio
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/linux/include/linux/
H A Dusb.h1 /* SPDX-License-Identifier: GPL-2.0 */
14 #include <linux/errno.h> /* for -ENODEV */
29 /*-------------------------------------------------------------------------*/
32 * Host-side wrappers for standard USB descriptors ... these are parsed
36 * - devices have one (usually) or more configs;
37 * - configs have one (often) or more interfaces;
38 * - interfaces have one (usually) or more settings;
39 * - each interface setting has zero or (usually) more endpoints.
40 * - a SuperSpeed endpoint has a companion descriptor
44 * Devices may also have class-specific or vendor-specific descriptors.
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/linux/Documentation/RCU/
H A DRTFP.txt4 This document describes RCU-related publications, and is followed by
19 with short-lived threads, such as the K42 research operating system.
20 However, Linux has long-lived tasks, so more is needed.
23 serialization, which is an RCU-like mechanism that relies on the presence
27 that these overheads were not so expensive in the mid-80s. Nonetheless,
28 passive serialization appears to be the first deferred-destruction
30 has lapsed, so this approach may be used in non-GPL software, if desired.
34 In 1987, Rashid et al. described lazy TLB-flush [RichardRashid87a].
36 this paper helped inspire the update-side batching used in the later
38 a description of Argus that noted that use of out-of-date values can
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/linux/kernel/rcu/
H A Dsrcutree.c1 // SPDX-License-Identifier: GPL-2.0+
3 * Sleepable Read-Copy Update mechanism for mutual exclusion.
11 * For detailed explanation of Read-Copy Update mechanism see -
33 /* Holdoff in nanoseconds for auto-expediting. */
38 /* Overflow-check frequency. N bits roughly says every 2**N grace periods. */
63 /* Number of CPUs to trigger init_srcu_struct()-time transition to big. */
71 /* Early-boo
1903 srcu_torture_stats_print(struct srcu_struct * ssp,char * tt,char * tf) srcu_torture_stats_print() argument
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