| /linux/drivers/gpu/drm/i915/ |
| H A D | Kconfig.debug | 1 # SPDX-License-Identifier: GPL-2.0-only
12 Add -Werror to the build flags for (and only for) i915.ko.
66 Choose this option to turn on extra driver debugging that may affect
74 bool "Always insert extra checks around mmio access by default"
78 reads) around every mmio (register) access that will slow the system
79 down. This sets the default value of i915.mmio_debug to -1 and can
132 ordinary tests, but may be vital for post-mortem debugging when
146 ordinary tests, but may be vital for post-mortem debugging when
159 Choose this option to turn on extra driver debugging that may affect
171 Choose this option to turn on extra driver debugging that may affect
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| /linux/Documentation/devicetree/bindings/net/ |
| H A D | mdio.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Andrew Lunn <andrew@lunn.ch>
11 - Florian Fainelli <f.fainelli@gmail.com>
12 - Heiner Kallweit <hkallweit1@gmail.com>
17 bus. These should follow the generic ethernet-phy.yaml document, or
22 pattern: '^mdio(-(bus|external))?(@.+|-([0-9]+))?$'
24 "#address-cells":
27 "#size-cells":
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| /linux/Documentation/fb/ |
| H A D | vesafb.rst | 7 The idea is simple: Turn on graphics mode at boot time with the help
20 * You can run XF68_FBDev on top of /dev/fb0 (=> non-accelerated X11
22 * Most important: boot logo :-)
33 Documentation/admin-guide/svga.rst for details.
81 "vga=mode-number" you have to transform the numbers to decimal.
88 XF68_FBDev should work just fine, but it is non-accelerated. Running
89 another (accelerated) X-Server like XF86_SVGA might or might not work.
90 It depends on X-Server and graphics board.
92 The X-Server must restore the video mode correctly, else you end up
93 with a broken console (and vesafb cannot do anything about this).
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| /linux/drivers/net/mdio/ |
| H A D | fwnode_mdio.c | 1 // SPDX-License-Identifier: GPL-2.0-only
14 #include <linux/pse-pd/pse.h>
34 if (PTR_ERR(psec) == -ENOENT) in fwnode_find_pse_control()
52 if (err == -ENOENT) in fwnode_find_mii_timestamper()
58 mii_ts = ERR_PTR(-EINVAL); in fwnode_find_mii_timestamper()
79 if (rc == -EPROBE_DEFER) in fwnode_mdiobus_phy_device_register()
80 rc = driver_deferred_probe_check_state(&phy->mdio.dev); in fwnode_mdiobus_phy_device_register()
81 if (rc == -EPROBE_DEFER) in fwnode_mdiobus_phy_device_register()
85 phy->irq = rc; in fwnode_mdiobus_phy_device_register()
86 mdio->irq[addr] = rc; in fwnode_mdiobus_phy_device_register()
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| H A D | mdio-bcm-unimac.c | 1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (C) 2014-2017 Broadcom
17 #include <linux/platform_data/mdio-bcm-unimac.h>
50 * peripheral registers for CPU-native byte order. in unimac_mdio_readl()
53 return __raw_readl(priv->base + offset); in unimac_mdio_readl()
55 return readl_relaxed(priv->base + offset); in unimac_mdio_readl()
62 __raw_writel(val, priv->base + offset); in unimac_mdio_writel()
64 writel_relaxed(val, priv->base + offset); in unimac_mdio_writel()
93 struct unimac_mdio_priv *priv = bus->priv; in unimac_mdio_read()
97 ret = clk_prepare_enable(priv->clk); in unimac_mdio_read()
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| /linux/Documentation/process/ |
| H A D | 4.Coding.rst | 6 While there is much to be said for a solid and community-oriented design
19 ---------
25 :ref:`Documentation/process/coding-style.rst <codingstyle>`. For much of
38 strangely-formatted code.
43 giving up a degree of control in a number of ways - including control over
49 as a way of getting their name into the kernel changelogs - or both. But
59 80-column limit, for example), just do it.
61 Note that you can also use the ``clang-format`` tool to help you with
62 these rules, to quickly re-format parts of your code automatically,
66 See the file :ref:`Documentation/dev-tools/clang-format.rst <clangformat>`
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| H A D | maintainer-kvm-x86.rst | 1 .. SPDX-License-Identifier: GPL-2.0
7 --------
17 -----
21 -----
25 specific tree, ``github.com/kvm-x86/linux.git``.
39 using finer-grained topic branches is to make it easier to keep tabs on an area
42 in-flight commits' SHA1 hashes, and having to reject a pull request due to bugs
46 via a Cthulhu merge on an as-needed basis, i.e. when a topic branch is updated.
61 close around rc5 for new features, and a soft close around rc6 for fixes (for
69 Patches that will be taken through a non-KVM tree (most often through the tip
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| H A D | applying-patches.rst | 54 in the patch file when applying it (the ``-p1`` argument to ``patch`` does
57 To revert a previously applied patch, use the -R argument to patch.
60 patch -p1 < ../patch-x.y.z
64 patch -R -p1 < ../patch-x.y.z
76 patch -p1 < path/to/patch-x.y.z
82 Patch can also get the name of the file to use via the -i argument, like
85 patch -p1 -i path/to/patch-x.y.z
91 xzcat path/to/patch-x.y.z.xz | patch -p1
92 bzcat path/to/patch-x.y.z.gz | patch -p1
96 gunzip or xz on the file -- like this::
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| H A D | 2.Process.rst | 14 ---------------
16 The kernel developers use a loosely time-based release process, with a new
53 be called 5.6-rc1. The -rc1 release is the signal that the time to
63 exception is made for drivers for previously-unsupported hardware; if they
64 touch no in-tree code, they cannot cause regressions and should be safe to
68 time. Linus releases new -rc kernels about once a week; a normal series
69 will get up to somewhere between -rc6 and -rc9 before the kernel is
78 September 30 5.4-rc1, merge window closes
79 October 6 5.4-rc2
80 October 13 5.4-rc3
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| H A D | coding-style.rst | 19 --------------
31 Now, some people will claim that having 8-character indentations makes
33 80-character terminal screen. The answer to that is that if you need
37 In short, 8-char indents make things easier to read, and have the added
43 instead of ``double-indenting`` the ``case`` labels. E.g.:
45 .. code-block:: c
67 .. code-block:: c
74 .. code-block:: c
81 .. code-block:: c
93 used for indentation, and the above example is deliberately broken.
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| /linux/Documentation/power/ |
| H A D | swsusp.rst | 32 power states like "standby", which normally don't turn USB off.)
47 - If you feel ACPI works pretty well on your system, you might try::
51 - If you would like to write hibernation image to swap and then suspend
56 - If you have SATA disks, you'll need recent kernels with SATA suspend
58 are built into kernel -- not modules. [There's way to make
66 before suspend (it is limited to around 2/5 of available RAM by default).
68 - The resume process checks for the presence of the resume device,
72 - The resume process may be triggered in two ways:
81 read-only) otherwise data may be corrupted.
87 Last revised: 2003-10-20 by Pavel Machek
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| /linux/arch/x86/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
4 bool "64-bit kernel" if "$(ARCH)" = "x86"
7 Say yes to build a 64-bit kernel - formerly known as x86_64
8 Say no to build a 32-bit kernel - formerly known as i386
13 # Options that are inherently 32-bit kernel only:
27 # Options that are inherently 64-bit kernel only:
46 We keep the static function tracing (!DYNAMIC_FTRACE) around
49 only need to keep it around for x86_64. No need to keep it
55 # ported to 32-bit as well. )
154 # Word-size accesses may read uninitialized data past the trailing \0
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| /linux/arch/arm64/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0-only
279 ARM 64-bit (AArch64) Linux support.
287 # required due to use of the -Zfixed-x18 flag.
290 # -Zsanitizer=shadow-call-stack flag.
300 depends on $(cc-option,-fpatchable-function-entry=2)
326 # VA_BITS - PAGE_SHIFT - 3
404 def_bool !$(as-instr,1:\n.inst 0\n.rept . - 1b\n\nnop\n.endr\n)
409 # https://github.com/llvm/llvm-project/commit/2a96f47c5ffca84cd774ad402cacd137f4bf45e2
448 This option adds an alternative code sequence to work around Ampere
459 at stage-2.
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| /linux/drivers/char/agp/ |
| H A D | uninorth-agp.c | 1 // SPDX-License-Identifier: GPL-2.0-only
42 A_SIZE_32(agp_bridge->driver->aperture_sizes); in uninorth_fetch_size()
50 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) in uninorth_fetch_size()
54 if (i == agp_bridge->driver->num_aperture_sizes) { in uninorth_fetch_size()
55 dev_err(&agp_bridge->dev->dev, "invalid aperture size, " in uninorth_fetch_size()
63 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) in uninorth_fetch_size()
68 agp_bridge->previous_size = in uninorth_fetch_size()
69 agp_bridge->current_size = (void *)(values + i); in uninorth_fetch_size()
70 agp_bridge->aperture_size_idx = i; in uninorth_fetch_size()
80 pci_write_config_dword(agp_bridge->dev, UNI_N_CFG_GART_CTRL, in uninorth_tlbflush()
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| /linux/arch/x86/kernel/cpu/ |
| H A D | intel.c | 1 // SPDX-License-Identifier: GPL-2.0
18 #include <asm/intel-family.h>
39 * Processors which have self-snooping capability can handle conflicting
47 switch (c->x86_vfm) { in check_memory_type_self_snoop_errata()
79 if (c->x86 != 6) in probe_xeon_phi_r3mwait()
81 switch (c->x86_vfm) { in probe_xeon_phi_r3mwait()
101 * Early microcode releases for the Spectre v2 mitigation were broken.
103 * - https://newsroom.intel.com/wp-content/uploads/sites/11/2018/03/microcode-update-guidance.pdf
104 * - https://kb.vmware.com/s/article/52345
105 * - Microcode revisions observed in the wild
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| /linux/drivers/acpi/x86/ |
| H A D | utils.c | 1 // SPDX-License-Identifier: GPL-2.0-only
8 * Copyright (C) 2013-2015 Intel Corporation. All rights reserved.
18 #include <asm/intel-family.h>
22 * Some ACPI devices are hidden (status == 0x0) in recent BIOS-es because
26 * Some BIOS-es (temporarily) hide specific APCI devices to work around Windows
29 * Likewise sometimes some not-actually present devices are sometimes
32 * We work around this by using the below quirk list to override the status
38 * are re-used on different SoCs for completely different devices.
117 * but it is. In the 67000+ DMI decode dumps from linux-hardware.org
122 * was copy-pasted from the GPD win, so it has a disabled KIOX000A
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| /linux/arch/arm/mm/ |
| H A D | Kconfig | 1 # SPDX-License-Identifier: GPL-2.0
17 A 32-bit RISC microprocessor based on the ARM7 processor core
36 A 32-bit RISC processor with 8kByte Cache, Write Buffer and
37 MMU built around an ARM7TDMI core.
53 A 32-bit RISC processor with 8KB cache or 4KB variants,
54 write buffer and MPU(Protection Unit) built around
69 A 32-bit RISC microprocessor based on the ARM9 processor core
182 ARM940T is a member of the ARM9TDMI family of general-
184 instruction and 4KB data cases, each with a 4-word line
190 # ARM946E-S
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| /linux/drivers/crypto/ccp/ |
| H A D | ccp-dev-v5.c | 1 // SPDX-License-Identifier: GPL-2.0-only
12 #include <linux/dma-mapping.h>
17 #include "ccp-dev.h"
22 * If no space is available, wait around.
31 if (cmd_q->lsb >= 0) { in ccp_lsb_alloc()
32 start = (u32)bitmap_find_next_zero_area(cmd_q->lsbmap, in ccp_lsb_alloc()
36 bitmap_set(cmd_q->lsbmap, start, count); in ccp_lsb_alloc()
37 return start + cmd_q->lsb * LSB_SIZE; in ccp_lsb_alloc()
42 ccp = cmd_q->ccp; in ccp_lsb_alloc()
44 mutex_lock(&ccp->sb_mutex); in ccp_lsb_alloc()
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| /linux/Documentation/admin-guide/ |
| H A D | kernel-parameters.txt | 16 force -- enable ACPI if default was off
17 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
18 off -- disable ACPI if default was on
19 noirq -- do not use ACPI for IRQ routing
20 strict -- Be less tolerant of platforms that are not
22 rsdt -- prefer RSDT over (default) XSDT
23 copy_dsdt -- copy DSDT to memory
24 nocmcff -- Disable firmware first mode for corrected
28 nospcr -- disable console in ACPI SPCR table as
45 If set to vendor, prefer vendor-specific driver
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| /linux/include/ufs/ |
| H A D | ufshcd.h | 1 /* 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.
16 #include <linux/blk-crypto-profile.h>
17 #include <linux/blk-mq.h>
19 #include <linux/fault-inject.h>
23 #include <linux/dma-direction.h>
68 * struct uic_command - UIC command structure
92 /* Host <-> Device UniPro Link state */
97 UIC_LINK_BROKEN_STATE = 3, /* Link is in broken state */
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| /linux/arch/alpha/kernel/ |
| H A D | core_cia.c | 1 // SPDX-License-Identifier: GPL-2.0
34 * NOTE: Herein lie back-to-back mb instructions. They are magic.
58 * +-+-+-+-+-
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| /linux/drivers/scsi/isci/ |
| H A D | init.c | 7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
20 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
26 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
136 return sysfs_emit(buf, "%d\n", ihost->id); in isci_show_id()
184 /* ata recovery called from ata-eh */
206 * isci_register_sas_ha() - This method initializes various lldd
219 struct sas_ha_struct *sas_ha = &(isci_host->sas_ha); in isci_register_sas_ha()
223 sas_phys = devm_kcalloc(&isci_host->pdev->dev, in isci_register_sas_ha()
227 return -ENOMEM; in isci_register_sas_ha()
229 sas_ports = devm_kcalloc(&isci_host->pdev->dev, in isci_register_sas_ha()
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| /linux/sound/pci/ |
| H A D | es1968.c | 1 // SPDX-License-Identifier: GPL-2.0-or-later
9 * Rewritted from card-es1938.c source.
27 * encoding. The codecs are almost always AC-97 compliant codecs,
52 * to have a 512 byte buffer sitting around in wavecache/memory.
73 * the main maestro indirection. Ouch. We spinlock around the actual
79 * We also have an OSS state lock that is thrown around in a few
88 #include <linux/dma-mapping.h>
102 #include <media/drv-intf/tea575x.h>
115 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 1-MAX */
118 static int total_bufsize[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1024 };
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| /linux/drivers/video/fbdev/ |
| H A D | sa1100fb.c | 16 * linux-arm-kernel@lists.arm.linux.org.uk
26 * - With the Neponset plugged into an Assabet, LCD powerdown
29 * - We don't limit the CPU clock rate nor the mode selection
33 * - Linear grayscale palettes and the kernel.
41 * David Neuer. It's around 8 lines of C code, plus another 4 to
44 * - The following must never be specified in a panel definition:
47 * - The following should be specified:
57 * - Driver appears to be working for Brutus 320x200x8bpp mode. Other
66 * - FrameBuffer memory is now allocated at run-time when the
70 * - Big cleanup for dynamic selection of machine type at run time.
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| /linux/drivers/net/ethernet/dec/tulip/ |
| H A D | tulip_core.c | 1 /* tulip_core.c: A DEC 21x4x-family ethernet driver for Linux.
4 Written/copyright 1994-2001 by Donald Becker.
33 /* A few user-configurable values. */
39 /* Used to pass the full-duplex flag, etc. */
47 "10baseT-FDX", "100baseTx-FDX", "100baseT4", "100baseFx",
48 "100baseFx-FDX", "MII 10baseT", "MII 10baseT-FDX", "MII",
49 "10baseT(forced)", "MII 100baseTx", "MII 100baseTx-FDX", "MII 100baseT4",
50 "MII 100baseFx-HDX", "MII 100baseFx-FDX", "Home-PNA 1Mbps", "Invalid-19",
54 /* Set the copy breakpoint for the copy-only-tiny-buffer Rx structure. */
71 Warning: many older 486 systems are broken and require setting 0x00A04800
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