| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Björn Helgaas | 6677 | 27.22% | 36 | 7.24% |
| Alex Williamson | 2510 | 10.23% | 34 | 6.84% |
| Linus Torvalds (pre-git) | 1083 | 4.42% | 26 | 5.23% |
| Linus Torvalds | 750 | 3.06% | 16 | 3.22% |
| Doug Meyer | 514 | 2.10% | 1 | 0.20% |
| David Woodhouse | 461 | 1.88% | 1 | 0.20% |
| Mika Westerberg | 459 | 1.87% | 3 | 0.60% |
| Tadeusz Struk | 457 | 1.86% | 1 | 0.20% |
| Ding Tianhong | 411 | 1.68% | 3 | 0.60% |
| Kelvin Cao | 328 | 1.34% | 3 | 0.60% |
| Yinghai Lu | 316 | 1.29% | 11 | 2.21% |
| Alan Cox | 308 | 1.26% | 9 | 1.81% |
| Lukas Wunner | 298 | 1.21% | 6 | 1.21% |
| Logan Gunthorpe | 277 | 1.13% | 5 | 1.01% |
| Olaf Dabrunz | 244 | 0.99% | 3 | 0.60% |
| Maciej W. Rozycki | 243 | 0.99% | 2 | 0.40% |
| Chiqijun | 236 | 0.96% | 1 | 0.20% |
| Jon Mason | 234 | 0.95% | 3 | 0.60% |
| Wasim Khan | 224 | 0.91% | 1 | 0.20% |
| Vidya Sagar | 220 | 0.90% | 2 | 0.40% |
| Thomas Petazzoni | 220 | 0.90% | 1 | 0.20% |
| Kai-Heng Feng | 203 | 0.83% | 4 | 0.80% |
| Xudong Hao | 197 | 0.80% | 1 | 0.20% |
| Nathan Rossi | 183 | 0.75% | 1 | 0.20% |
| Rafael J. Wysocki | 179 | 0.73% | 4 | 0.80% |
| Brice Goglin | 164 | 0.67% | 3 | 0.60% |
| Casey Leedom | 144 | 0.59% | 2 | 0.40% |
| Alex Deucher | 143 | 0.58% | 4 | 0.80% |
| Abhishek Sahu | 143 | 0.58% | 2 | 0.40% |
| Stephen Chandler Paul | 140 | 0.57% | 2 | 0.40% |
| Tejun Heo | 138 | 0.56% | 8 | 1.61% |
| Stefan Assmann | 137 | 0.56% | 5 | 1.01% |
| Kristen Carlson Accardi | 135 | 0.55% | 2 | 0.40% |
| James Puthukattukaran | 134 | 0.55% | 1 | 0.20% |
| Maxim Levitsky | 133 | 0.54% | 1 | 0.20% |
| Andreas Noever | 132 | 0.54% | 2 | 0.40% |
| Sinan Kaya | 129 | 0.53% | 5 | 1.01% |
| Noa Osherovich | 123 | 0.50% | 3 | 0.60% |
| Alexander Duyck | 120 | 0.49% | 1 | 0.20% |
| raymond pang | 112 | 0.46% | 2 | 0.40% |
| Sean V Kelley | 108 | 0.44% | 1 | 0.20% |
| Bartosz Pawlowski | 106 | 0.43% | 2 | 0.40% |
| Rudolf Marek | 104 | 0.42% | 3 | 0.60% |
| Jean Delvare | 102 | 0.42% | 13 | 2.62% |
| Len Brown | 99 | 0.40% | 2 | 0.40% |
| Zhangfei Gao | 97 | 0.40% | 2 | 0.40% |
| Peer Chen | 94 | 0.38% | 1 | 0.20% |
| David S. Miller | 93 | 0.38% | 4 | 0.80% |
| Slawomir Pawlowski | 92 | 0.38% | 1 | 0.20% |
| Krzysztof Hałasa | 92 | 0.38% | 1 | 0.20% |
| Jiri Slaby | 89 | 0.36% | 2 | 0.40% |
| James Sewart | 88 | 0.36% | 2 | 0.40% |
| Feng Kan | 84 | 0.34% | 2 | 0.40% |
| Todd E Brandt | 83 | 0.34% | 1 | 0.20% |
| Daniel Drake | 81 | 0.33% | 3 | 0.60% |
| Dexuan Cui | 79 | 0.32% | 3 | 0.60% |
| Hariprasad Shenai | 78 | 0.32% | 1 | 0.20% |
| Myron Stowe | 76 | 0.31% | 4 | 0.80% |
| Jon Derrick | 72 | 0.29% | 1 | 0.20% |
| Thinh Nguyen | 69 | 0.28% | 2 | 0.40% |
| Andrew Morton | 69 | 0.28% | 2 | 0.40% |
| Patrick Mochel | 66 | 0.27% | 1 | 0.20% |
| Xiong Huang | 60 | 0.24% | 2 | 0.40% |
| Thomas Jarosch | 59 | 0.24% | 2 | 0.40% |
| Mark M. Hoffman | 59 | 0.24% | 2 | 0.40% |
| Srinidhi Kasagar | 58 | 0.24% | 1 | 0.20% |
| Dave Jones | 57 | 0.23% | 1 | 0.20% |
| Lizhi Hou | 56 | 0.23% | 2 | 0.40% |
| Mengyuan Lou | 54 | 0.22% | 1 | 0.20% |
| Ivan Kokshaysky | 54 | 0.22% | 4 | 0.80% |
| Adrian Bunk | 53 | 0.22% | 1 | 0.20% |
| Hou Zhiqiang | 53 | 0.22% | 1 | 0.20% |
| George Cherian | 53 | 0.22% | 2 | 0.40% |
| Tim Yamin | 51 | 0.21% | 3 | 0.60% |
| Jacek Lawrynowicz | 51 | 0.21% | 1 | 0.20% |
| Ali Saidi | 51 | 0.21% | 1 | 0.20% |
| Ian Abbott | 49 | 0.20% | 2 | 0.40% |
| Stefan Mätje | 46 | 0.19% | 1 | 0.20% |
| Michał Mirosław | 46 | 0.19% | 2 | 0.40% |
| Arjan van de Ven | 46 | 0.19% | 1 | 0.20% |
| Gabe Black | 44 | 0.18% | 1 | 0.20% |
| Ashok Raj | 44 | 0.18% | 1 | 0.20% |
| Bauke Jan Douma | 42 | 0.17% | 1 | 0.20% |
| Clemens Ladisch | 41 | 0.17% | 2 | 0.40% |
| Krzysztof Wilczynski | 41 | 0.17% | 3 | 0.60% |
| Bartlomiej Zolnierkiewicz | 41 | 0.17% | 2 | 0.40% |
| Yakui Zhao | 40 | 0.16% | 1 | 0.20% |
| Örjan Persson | 39 | 0.16% | 1 | 0.20% |
| Frederick Lawler | 39 | 0.16% | 1 | 0.20% |
| Greg Kroah-Hartman | 39 | 0.16% | 6 | 1.21% |
| Sébastien Dugué | 39 | 0.16% | 1 | 0.20% |
| Shanker Donthineni | 38 | 0.15% | 1 | 0.20% |
| Sasha Neftin | 38 | 0.15% | 1 | 0.20% |
| Neil Horman | 36 | 0.15% | 1 | 0.20% |
| Michael Ellerman | 36 | 0.15% | 1 | 0.20% |
| Sebastian Andrzej Siewior | 36 | 0.15% | 1 | 0.20% |
| Todd Android Poynor | 35 | 0.14% | 1 | 0.20% |
| Alvaro Karsz | 34 | 0.14% | 1 | 0.20% |
| Andy Shevchenko | 33 | 0.13% | 2 | 0.40% |
| Jonathan Chocron | 33 | 0.13% | 1 | 0.20% |
| Manoj Iyer | 32 | 0.13% | 2 | 0.40% |
| Ajit Khaparde | 32 | 0.13% | 1 | 0.20% |
| Rui Zhang | 32 | 0.13% | 1 | 0.20% |
| Puranjay Mohan | 31 | 0.13% | 1 | 0.20% |
| Evan Quan | 31 | 0.13% | 2 | 0.40% |
| Sergei Shtylyov | 30 | 0.12% | 1 | 0.20% |
| Karsten Wiese | 29 | 0.12% | 1 | 0.20% |
| Jayachandran C | 29 | 0.12% | 1 | 0.20% |
| Andreas Petlund | 28 | 0.11% | 1 | 0.20% |
| Douglas Lehr | 28 | 0.11% | 1 | 0.20% |
| Ard Biesheuvel | 28 | 0.11% | 1 | 0.20% |
| Vadim Lomovtsev | 28 | 0.11% | 1 | 0.20% |
| Dely Sy | 28 | 0.11% | 2 | 0.40% |
| gw.kernel@tnode.com | 28 | 0.11% | 1 | 0.20% |
| Rajat Jain | 27 | 0.11% | 2 | 0.40% |
| Daniel Ritz | 27 | 0.11% | 2 | 0.40% |
| Abhinav Ratna | 27 | 0.11% | 1 | 0.20% |
| Ben Hutchings | 26 | 0.11% | 2 | 0.40% |
| Benjamin Li | 26 | 0.11% | 1 | 0.20% |
| Robert Hancock | 26 | 0.11% | 1 | 0.20% |
| Manish Jaggi | 25 | 0.10% | 2 | 0.40% |
| Ilpo Järvinen | 25 | 0.10% | 3 | 0.60% |
| Jacob jun Pan | 24 | 0.10% | 1 | 0.20% |
| Pavan Chebbi | 24 | 0.10% | 1 | 0.20% |
| Ido Schimmel | 23 | 0.09% | 1 | 0.20% |
| Suresh B. Siddha | 23 | 0.09% | 1 | 0.20% |
| Amey Narkhede | 22 | 0.09% | 3 | 0.60% |
| Marcos Scriven | 21 | 0.09% | 1 | 0.20% |
| Matt Carlson | 21 | 0.09% | 1 | 0.20% |
| Huang Rui | 21 | 0.09% | 1 | 0.20% |
| Felix Radensky | 20 | 0.08% | 1 | 0.20% |
| Ananth Jasty | 20 | 0.08% | 1 | 0.20% |
| Peter Oruba | 20 | 0.08% | 1 | 0.20% |
| Conke Hu | 19 | 0.08% | 1 | 0.20% |
| Carl-Daniel Hailfinger | 19 | 0.08% | 1 | 0.20% |
| Auke-Jan H Kok | 19 | 0.08% | 4 | 0.80% |
| Vasundhara Volam | 18 | 0.07% | 1 | 0.20% |
| Marc Zyngier | 18 | 0.07% | 3 | 0.60% |
| Andres Salomon | 18 | 0.07% | 1 | 0.20% |
| Joerg Roedel | 17 | 0.07% | 1 | 0.20% |
| Bin Meng | 16 | 0.07% | 1 | 0.20% |
| Marti Raudsepp | 16 | 0.07% | 1 | 0.20% |
| Jesse Barnes | 15 | 0.06% | 1 | 0.20% |
| Krzysztof Helt | 14 | 0.06% | 1 | 0.20% |
| Jason S. McMullan | 14 | 0.06% | 1 | 0.20% |
| Chris Blake | 13 | 0.05% | 1 | 0.20% |
| Rumen Ivanov Zarev | 13 | 0.05% | 1 | 0.20% |
| Marek Behún | 12 | 0.05% | 2 | 0.40% |
| Ville Syrjälä | 12 | 0.05% | 1 | 0.20% |
| Yu Zhao | 12 | 0.05% | 1 | 0.20% |
| Daniel Yeisley | 11 | 0.04% | 1 | 0.20% |
| Konstantin Kharlamov | 11 | 0.04% | 1 | 0.20% |
| Matthew Wilcox | 10 | 0.04% | 2 | 0.40% |
| Andrew Lutomirski | 10 | 0.04% | 1 | 0.20% |
| Tim Sander | 10 | 0.04% | 1 | 0.20% |
| Kevin Buettner | 10 | 0.04% | 1 | 0.20% |
| David Daney | 10 | 0.04% | 1 | 0.20% |
| Dominik Brodowski | 10 | 0.04% | 1 | 0.20% |
| Sriharsha Basavapatna | 9 | 0.04% | 1 | 0.20% |
| James Prestwood | 9 | 0.04% | 1 | 0.20% |
| Marcin Bachry | 9 | 0.04% | 1 | 0.20% |
| Mike Pastore | 9 | 0.04% | 1 | 0.20% |
| Maik Broemme | 9 | 0.04% | 1 | 0.20% |
| Andre Przywara | 9 | 0.04% | 1 | 0.20% |
| Damien Le Moal | 9 | 0.04% | 1 | 0.20% |
| Jaehoon Chung | 9 | 0.04% | 1 | 0.20% |
| Jörg Wedekind | 9 | 0.04% | 1 | 0.20% |
| Jakub Kiciński | 9 | 0.04% | 1 | 0.20% |
| Thomas Vincent-Cross | 8 | 0.03% | 1 | 0.20% |
| Raphael Norwitz | 8 | 0.03% | 1 | 0.20% |
| Guilherme G. Piccoli | 8 | 0.03% | 1 | 0.20% |
| Edward Cree | 8 | 0.03% | 1 | 0.20% |
| Doug Thompson | 8 | 0.03% | 1 | 0.20% |
| Kuppuswamy Sathyanarayanan | 8 | 0.03% | 1 | 0.20% |
| Vicki Pfau | 8 | 0.03% | 1 | 0.20% |
| Antti Järvinen | 8 | 0.03% | 1 | 0.20% |
| Brian King | 8 | 0.03% | 1 | 0.20% |
| Nikolai Kostrigin | 8 | 0.03% | 1 | 0.20% |
| Aaron Sierra | 8 | 0.03% | 1 | 0.20% |
| Jarod Wilson | 8 | 0.03% | 1 | 0.20% |
| Thomas Renninger | 8 | 0.03% | 1 | 0.20% |
| Yifeng Li | 8 | 0.03% | 1 | 0.20% |
| Hans de Goede | 7 | 0.03% | 1 | 0.20% |
| Robin Murphy | 7 | 0.03% | 1 | 0.20% |
| Ryan Desfosses | 7 | 0.03% | 1 | 0.20% |
| Simon Horman | 7 | 0.03% | 1 | 0.20% |
| Keith Busch | 7 | 0.03% | 2 | 0.40% |
| Jesper Juhl | 7 | 0.03% | 1 | 0.20% |
| Crane Cai | 7 | 0.03% | 1 | 0.20% |
| Ingmar Klein | 7 | 0.03% | 1 | 0.20% |
| Ondrej Zary | 6 | 0.02% | 1 | 0.20% |
| Jay Cliburn | 6 | 0.02% | 1 | 0.20% |
| Shane Huang | 6 | 0.02% | 2 | 0.40% |
| Josh Boyer | 6 | 0.02% | 1 | 0.20% |
| Ben Skeggs | 6 | 0.02% | 3 | 0.60% |
| Stafford Horne | 5 | 0.02% | 1 | 0.20% |
| Jan Kiszka | 5 | 0.02% | 1 | 0.20% |
| Benjamin Herrenschmidt | 5 | 0.02% | 1 | 0.20% |
| Niklas Schnelle | 5 | 0.02% | 1 | 0.20% |
| Xavier Gnata | 5 | 0.02% | 1 | 0.20% |
| Christoph Hellwig | 5 | 0.02% | 3 | 0.60% |
| Hanjun Guo | 5 | 0.02% | 1 | 0.20% |
| Hemant Pedanekar | 5 | 0.02% | 1 | 0.20% |
| Dongdong Liu | 4 | 0.02% | 2 | 0.40% |
| Karol Kozimor | 4 | 0.02% | 1 | 0.20% |
| Csaba Henk | 4 | 0.02% | 1 | 0.20% |
| Yijing Wang | 4 | 0.02% | 1 | 0.20% |
| tomek at koprowski | 4 | 0.02% | 1 | 0.20% |
| Gustavo A. R. Silva | 4 | 0.02% | 1 | 0.20% |
| Iacopo Spalletti | 4 | 0.02% | 1 | 0.20% |
| Herbert Xu | 4 | 0.02% | 1 | 0.20% |
| Mohan Kumar | 4 | 0.02% | 2 | 0.40% |
| Paul Menzel | 4 | 0.02% | 1 | 0.20% |
| Yang Shunyong | 3 | 0.01% | 1 | 0.20% |
| Denis Efremov | 3 | 0.01% | 1 | 0.20% |
| Jérôme Carretero | 3 | 0.01% | 1 | 0.20% |
| Paul Gortmaker | 3 | 0.01% | 1 | 0.20% |
| Wei Yang | 3 | 0.01% | 1 | 0.20% |
| Mengdong Lin | 3 | 0.01% | 1 | 0.20% |
| Heikki Krogerus | 3 | 0.01% | 1 | 0.20% |
| Thomas Gleixner | 3 | 0.01% | 1 | 0.20% |
| Chris Wedgwood | 3 | 0.01% | 1 | 0.20% |
| Heiner Kallweit | 3 | 0.01% | 1 | 0.20% |
| Sakari Ailus | 3 | 0.01% | 2 | 0.40% |
| Dave Airlie | 2 | 0.01% | 1 | 0.20% |
| Eric W. Biedermann | 2 | 0.01% | 1 | 0.20% |
| LeoLiuoc | 2 | 0.01% | 1 | 0.20% |
| Henry Su | 2 | 0.01% | 1 | 0.20% |
| Steffen Liebergeld | 1 | 0.00% | 1 | 0.20% |
| David O'Shea | 1 | 0.00% | 1 | 0.20% |
| Meelis Roos | 1 | 0.00% | 1 | 0.20% |
| Masahiro Yamada | 1 | 0.00% | 1 | 0.20% |
| Yicong Yang | 1 | 0.00% | 1 | 0.20% |
| Alexander A. Klimov | 1 | 0.00% | 1 | 0.20% |
| Jeff Garzik | 1 | 0.00% | 1 | 0.20% |
| Total | 24529 | 497 |
// SPDX-License-Identifier: GPL-2.0 /* * This file contains work-arounds for many known PCI hardware bugs. * Devices present only on certain architectures (host bridges et cetera) * should be handled in arch-specific code. * * Note: any quirks for hotpluggable devices must _NOT_ be declared __init. * * Copyright (c) 1999 Martin Mares <mj@ucw.cz> * * Init/reset quirks for USB host controllers should be in the USB quirks * file, where their drivers can use them. */ #include <linux/bitfield.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/export.h> #include <linux/pci.h> #include <linux/isa-dma.h> /* isa_dma_bridge_buggy */ #include <linux/init.h> #include <linux/delay.h> #include <linux/acpi.h> #include <linux/dmi.h> #include <linux/ioport.h> #include <linux/sched.h> #include <linux/ktime.h> #include <linux/mm.h> #include <linux/nvme.h> #include <linux/platform_data/x86/apple.h> #include <linux/pm_runtime.h> #include <linux/suspend.h> #include <linux/switchtec.h> #include "pci.h" /* * Retrain the link of a downstream PCIe port by hand if necessary. * * This is needed at least where a downstream port of the ASMedia ASM2824 * Gen 3 switch is wired to the upstream port of the Pericom PI7C9X2G304 * Gen 2 switch, and observed with the Delock Riser Card PCI Express x1 > * 2 x PCIe x1 device, P/N 41433, plugged into the SiFive HiFive Unmatched * board. * * In such a configuration the switches are supposed to negotiate the link * speed of preferably 5.0GT/s, falling back to 2.5GT/s. However the link * continues switching between the two speeds indefinitely and the data * link layer never reaches the active state, with link training reported * repeatedly active ~84% of the time. Forcing the target link speed to * 2.5GT/s with the upstream ASM2824 device makes the two switches talk to * each other correctly however. And more interestingly retraining with a * higher target link speed afterwards lets the two successfully negotiate * 5.0GT/s. * * With the ASM2824 we can rely on the otherwise optional Data Link Layer * Link Active status bit and in the failed link training scenario it will * be off along with the Link Bandwidth Management Status indicating that * hardware has changed the link speed or width in an attempt to correct * unreliable link operation. For a port that has been left unconnected * both bits will be clear. So use this information to detect the problem * rather than polling the Link Training bit and watching out for flips or * at least the active status. * * Since the exact nature of the problem isn't known and in principle this * could trigger where an ASM2824 device is downstream rather upstream, * apply this erratum workaround to any downstream ports as long as they * support Link Active reporting and have the Link Control 2 register. * Restrict the speed to 2.5GT/s then with the Target Link Speed field, * request a retrain and wait 200ms for the data link to go up. * * If this turns out successful and we know by the Vendor:Device ID it is * safe to do so, then lift the restriction, letting the devices negotiate * a higher speed. Also check for a similar 2.5GT/s speed restriction the * firmware may have already arranged and lift it with ports that already * report their data link being up. * * Return TRUE if the link has been successfully retrained, otherwise FALSE. */ bool pcie_failed_link_retrain(struct pci_dev *dev) { static const struct pci_device_id ids[] = { { PCI_VDEVICE(ASMEDIA, 0x2824) }, /* ASMedia ASM2824 */ {} }; u16 lnksta, lnkctl2; if (!pci_is_pcie(dev) || !pcie_downstream_port(dev) || !pcie_cap_has_lnkctl2(dev) || !dev->link_active_reporting) return false; pcie_capability_read_word(dev, PCI_EXP_LNKCTL2, &lnkctl2); pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnksta); if ((lnksta & (PCI_EXP_LNKSTA_LBMS | PCI_EXP_LNKSTA_DLLLA)) == PCI_EXP_LNKSTA_LBMS) { pci_info(dev, "broken device, retraining non-functional downstream link at 2.5GT/s\n"); lnkctl2 &= ~PCI_EXP_LNKCTL2_TLS; lnkctl2 |= PCI_EXP_LNKCTL2_TLS_2_5GT; pcie_capability_write_word(dev, PCI_EXP_LNKCTL2, lnkctl2); if (pcie_retrain_link(dev, false)) { pci_info(dev, "retraining failed\n"); return false; } pcie_capability_read_word(dev, PCI_EXP_LNKSTA, &lnksta); } if ((lnksta & PCI_EXP_LNKSTA_DLLLA) && (lnkctl2 & PCI_EXP_LNKCTL2_TLS) == PCI_EXP_LNKCTL2_TLS_2_5GT && pci_match_id(ids, dev)) { u32 lnkcap; pci_info(dev, "removing 2.5GT/s downstream link speed restriction\n"); pcie_capability_read_dword(dev, PCI_EXP_LNKCAP, &lnkcap); lnkctl2 &= ~PCI_EXP_LNKCTL2_TLS; lnkctl2 |= lnkcap & PCI_EXP_LNKCAP_SLS; pcie_capability_write_word(dev, PCI_EXP_LNKCTL2, lnkctl2); if (pcie_retrain_link(dev, false)) { pci_info(dev, "retraining failed\n"); return false; } } return true; } static ktime_t fixup_debug_start(struct pci_dev *dev, void (*fn)(struct pci_dev *dev)) { if (initcall_debug) pci_info(dev, "calling %pS @ %i\n", fn, task_pid_nr(current)); return ktime_get(); } static void fixup_debug_report(struct pci_dev *dev, ktime_t calltime, void (*fn)(struct pci_dev *dev)) { ktime_t delta, rettime; unsigned long long duration; rettime = ktime_get(); delta = ktime_sub(rettime, calltime); duration = (unsigned long long) ktime_to_ns(delta) >> 10; if (initcall_debug || duration > 10000) pci_info(dev, "%pS took %lld usecs\n", fn, duration); } static void pci_do_fixups(struct pci_dev *dev, struct pci_fixup *f, struct pci_fixup *end) { ktime_t calltime; for (; f < end; f++) if ((f->class == (u32) (dev->class >> f->class_shift) || f->class == (u32) PCI_ANY_ID) && (f->vendor == dev->vendor || f->vendor == (u16) PCI_ANY_ID) && (f->device == dev->device || f->device == (u16) PCI_ANY_ID)) { void (*hook)(struct pci_dev *dev); #ifdef CONFIG_HAVE_ARCH_PREL32_RELOCATIONS hook = offset_to_ptr(&f->hook_offset); #else hook = f->hook; #endif calltime = fixup_debug_start(dev, hook); hook(dev); fixup_debug_report(dev, calltime, hook); } } extern struct pci_fixup __start_pci_fixups_early[]; extern struct pci_fixup __end_pci_fixups_early[]; extern struct pci_fixup __start_pci_fixups_header[]; extern struct pci_fixup __end_pci_fixups_header[]; extern struct pci_fixup __start_pci_fixups_final[]; extern struct pci_fixup __end_pci_fixups_final[]; extern struct pci_fixup __start_pci_fixups_enable[]; extern struct pci_fixup __end_pci_fixups_enable[]; extern struct pci_fixup __start_pci_fixups_resume[]; extern struct pci_fixup __end_pci_fixups_resume[]; extern struct pci_fixup __start_pci_fixups_resume_early[]; extern struct pci_fixup __end_pci_fixups_resume_early[]; extern struct pci_fixup __start_pci_fixups_suspend[]; extern struct pci_fixup __end_pci_fixups_suspend[]; extern struct pci_fixup __start_pci_fixups_suspend_late[]; extern struct pci_fixup __end_pci_fixups_suspend_late[]; static bool pci_apply_fixup_final_quirks; void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev) { struct pci_fixup *start, *end; switch (pass) { case pci_fixup_early: start = __start_pci_fixups_early; end = __end_pci_fixups_early; break; case pci_fixup_header: start = __start_pci_fixups_header; end = __end_pci_fixups_header; break; case pci_fixup_final: if (!pci_apply_fixup_final_quirks) return; start = __start_pci_fixups_final; end = __end_pci_fixups_final; break; case pci_fixup_enable: start = __start_pci_fixups_enable; end = __end_pci_fixups_enable; break; case pci_fixup_resume: start = __start_pci_fixups_resume; end = __end_pci_fixups_resume; break; case pci_fixup_resume_early: start = __start_pci_fixups_resume_early; end = __end_pci_fixups_resume_early; break; case pci_fixup_suspend: start = __start_pci_fixups_suspend; end = __end_pci_fixups_suspend; break; case pci_fixup_suspend_late: start = __start_pci_fixups_suspend_late; end = __end_pci_fixups_suspend_late; break; default: /* stupid compiler warning, you would think with an enum... */ return; } pci_do_fixups(dev, start, end); } EXPORT_SYMBOL(pci_fixup_device); static int __init pci_apply_final_quirks(void) { struct pci_dev *dev = NULL; u8 cls = 0; u8 tmp; if (pci_cache_line_size) pr_info("PCI: CLS %u bytes\n", pci_cache_line_size << 2); pci_apply_fixup_final_quirks = true; for_each_pci_dev(dev) { pci_fixup_device(pci_fixup_final, dev); /* * If arch hasn't set it explicitly yet, use the CLS * value shared by all PCI devices. If there's a * mismatch, fall back to the default value. */ if (!pci_cache_line_size) { pci_read_config_byte(dev, PCI_CACHE_LINE_SIZE, &tmp); if (!cls) cls = tmp; if (!tmp || cls == tmp) continue; pci_info(dev, "CLS mismatch (%u != %u), using %u bytes\n", cls << 2, tmp << 2, pci_dfl_cache_line_size << 2); pci_cache_line_size = pci_dfl_cache_line_size; } } if (!pci_cache_line_size) { pr_info("PCI: CLS %u bytes, default %u\n", cls << 2, pci_dfl_cache_line_size << 2); pci_cache_line_size = cls ? cls : pci_dfl_cache_line_size; } return 0; } fs_initcall_sync(pci_apply_final_quirks); /* * Decoding should be disabled for a PCI device during BAR sizing to avoid * conflict. But doing so may cause problems on host bridge and perhaps other * key system devices. For devices that need to have mmio decoding always-on, * we need to set the dev->mmio_always_on bit. */ static void quirk_mmio_always_on(struct pci_dev *dev) { dev->mmio_always_on = 1; } DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_BRIDGE_HOST, 8, quirk_mmio_always_on); /* * The Mellanox Tavor device gives false positive parity errors. Disable * parity error reporting. */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR, pci_disable_parity); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE, pci_disable_parity); /* * Deal with broken BIOSes that neglect to enable passive release, * which can cause problems in combination with the 82441FX/PPro MTRRs */ static void quirk_passive_release(struct pci_dev *dev) { struct pci_dev *d = NULL; unsigned char dlc; /* * We have to make sure a particular bit is set in the PIIX3 * ISA bridge, so we have to go out and find it. */ while ((d = pci_get_device(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, d))) { pci_read_config_byte(d, 0x82, &dlc); if (!(dlc & 1<<1)) { pci_info(d, "PIIX3: Enabling Passive Release\n"); dlc |= 1<<1; pci_write_config_byte(d, 0x82, dlc); } } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_passive_release); #ifdef CONFIG_X86_32 /* * The VIA VP2/VP3/MVP3 seem to have some 'features'. There may be a * workaround but VIA don't answer queries. If you happen to have good * contacts at VIA ask them for me please -- Alan * * This appears to be BIOS not version dependent. So presumably there is a * chipset level fix. */ static void quirk_isa_dma_hangs(struct pci_dev *dev) { if (!isa_dma_bridge_buggy) { isa_dma_bridge_buggy = 1; pci_info(dev, "Activating ISA DMA hang workarounds\n"); } } /* * It's not totally clear which chipsets are the problematic ones. We know * 82C586 and 82C596 variants are affected. */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_0, quirk_isa_dma_hangs); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C596, quirk_isa_dma_hangs); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, quirk_isa_dma_hangs); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1533, quirk_isa_dma_hangs); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_1, quirk_isa_dma_hangs); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_2, quirk_isa_dma_hangs); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NEC, PCI_DEVICE_ID_NEC_CBUS_3, quirk_isa_dma_hangs); #endif #ifdef CONFIG_HAS_IOPORT /* * Intel NM10 "Tiger Point" LPC PM1a_STS.BM_STS must be clear * for some HT machines to use C4 w/o hanging. */ static void quirk_tigerpoint_bm_sts(struct pci_dev *dev) { u32 pmbase; u16 pm1a; pci_read_config_dword(dev, 0x40, &pmbase); pmbase = pmbase & 0xff80; pm1a = inw(pmbase); if (pm1a & 0x10) { pci_info(dev, FW_BUG "Tiger Point LPC.BM_STS cleared\n"); outw(0x10, pmbase); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_TGP_LPC, quirk_tigerpoint_bm_sts); #endif /* Chipsets where PCI->PCI transfers vanish or hang */ static void quirk_nopcipci(struct pci_dev *dev) { if ((pci_pci_problems & PCIPCI_FAIL) == 0) { pci_info(dev, "Disabling direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_FAIL; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5597, quirk_nopcipci); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_496, quirk_nopcipci); static void quirk_nopciamd(struct pci_dev *dev) { u8 rev; pci_read_config_byte(dev, 0x08, &rev); if (rev == 0x13) { /* Erratum 24 */ pci_info(dev, "Chipset erratum: Disabling direct PCI/AGP transfers\n"); pci_pci_problems |= PCIAGP_FAIL; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8151_0, quirk_nopciamd); /* Triton requires workarounds to be used by the drivers */ static void quirk_triton(struct pci_dev *dev) { if ((pci_pci_problems&PCIPCI_TRITON) == 0) { pci_info(dev, "Limiting direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_TRITON; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437, quirk_triton); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82437VX, quirk_triton); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439, quirk_triton); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82439TX, quirk_triton); /* * VIA Apollo KT133 needs PCI latency patch * Made according to a Windows driver-based patch by George E. Breese; * see PCI Latency Adjust on http://www.viahardware.com/download/viatweak.shtm * Also see http://www.au-ja.org/review-kt133a-1-en.phtml for the info on * which Mr Breese based his work. * * Updated based on further information from the site and also on * information provided by VIA */ static void quirk_vialatency(struct pci_dev *dev) { struct pci_dev *p; u8 busarb; /* * Ok, we have a potential problem chipset here. Now see if we have * a buggy southbridge. */ p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, NULL); if (p != NULL) { /* * 0x40 - 0x4f == 686B, 0x10 - 0x2f == 686A; * thanks Dan Hollis. * Check for buggy part revisions */ if (p->revision < 0x40 || p->revision > 0x42) goto exit; } else { p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, NULL); if (p == NULL) /* No problem parts */ goto exit; /* Check for buggy part revisions */ if (p->revision < 0x10 || p->revision > 0x12) goto exit; } /* * Ok we have the problem. Now set the PCI master grant to occur * every master grant. The apparent bug is that under high PCI load * (quite common in Linux of course) you can get data loss when the * CPU is held off the bus for 3 bus master requests. This happens * to include the IDE controllers.... * * VIA only apply this fix when an SB Live! is present but under * both Linux and Windows this isn't enough, and we have seen * corruption without SB Live! but with things like 3 UDMA IDE * controllers. So we ignore that bit of the VIA recommendation.. */ pci_read_config_byte(dev, 0x76, &busarb); /* * Set bit 4 and bit 5 of byte 76 to 0x01 * "Master priority rotation on every PCI master grant" */ busarb &= ~(1<<5); busarb |= (1<<4); pci_write_config_byte(dev, 0x76, busarb); pci_info(dev, "Applying VIA southbridge workaround\n"); exit: pci_dev_put(p); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); /* Must restore this on a resume from RAM */ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8363_0, quirk_vialatency); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8371_1, quirk_vialatency); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8361, quirk_vialatency); /* VIA Apollo VP3 needs ETBF on BT848/878 */ static void quirk_viaetbf(struct pci_dev *dev) { if ((pci_pci_problems&PCIPCI_VIAETBF) == 0) { pci_info(dev, "Limiting direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_VIAETBF; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_viaetbf); static void quirk_vsfx(struct pci_dev *dev) { if ((pci_pci_problems&PCIPCI_VSFX) == 0) { pci_info(dev, "Limiting direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_VSFX; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576, quirk_vsfx); /* * ALi Magik requires workarounds to be used by the drivers that DMA to AGP * space. Latency must be set to 0xA and Triton workaround applied too. * [Info kindly provided by ALi] */ static void quirk_alimagik(struct pci_dev *dev) { if ((pci_pci_problems&PCIPCI_ALIMAGIK) == 0) { pci_info(dev, "Limiting direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_ALIMAGIK|PCIPCI_TRITON; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1647, quirk_alimagik); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M1651, quirk_alimagik); /* Natoma has some interesting boundary conditions with Zoran stuff at least */ static void quirk_natoma(struct pci_dev *dev) { if ((pci_pci_problems&PCIPCI_NATOMA) == 0) { pci_info(dev, "Limiting direct PCI/PCI transfers\n"); pci_pci_problems |= PCIPCI_NATOMA; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82441, quirk_natoma); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_0, quirk_natoma); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443LX_1, quirk_natoma); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_0, quirk_natoma); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_1, quirk_natoma); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443BX_2, quirk_natoma); /* * This chip can cause PCI parity errors if config register 0xA0 is read * while DMAs are occurring. */ static void quirk_citrine(struct pci_dev *dev) { dev->cfg_size = 0xA0; } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_CITRINE, quirk_citrine); /* * This chip can cause bus lockups if config addresses above 0x600 * are read or written. */ static void quirk_nfp6000(struct pci_dev *dev) { dev->cfg_size = 0x600; } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP4000, quirk_nfp6000); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000, quirk_nfp6000); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP5000, quirk_nfp6000); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NETRONOME, PCI_DEVICE_ID_NETRONOME_NFP6000_VF, quirk_nfp6000); /* On IBM Crocodile ipr SAS adapters, expand BAR to system page size */ static void quirk_extend_bar_to_page(struct pci_dev *dev) { int i; for (i = 0; i < PCI_STD_NUM_BARS; i++) { struct resource *r = &dev->resource[i]; const char *r_name = pci_resource_name(dev, i); if (r->flags & IORESOURCE_MEM && resource_size(r) < PAGE_SIZE) { r->end = PAGE_SIZE - 1; r->start = 0; r->flags |= IORESOURCE_UNSET; pci_info(dev, "%s %pR: expanded to page size\n", r_name, r); } } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_IBM, 0x034a, quirk_extend_bar_to_page); /* * S3 868 and 968 chips report region size equal to 32M, but they decode 64M. * If it's needed, re-allocate the region. */ static void quirk_s3_64M(struct pci_dev *dev) { struct resource *r = &dev->resource[0]; if ((r->start & 0x3ffffff) || r->end != r->start + 0x3ffffff) { r->flags |= IORESOURCE_UNSET; r->start = 0; r->end = 0x3ffffff; } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_868, quirk_s3_64M); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_S3, PCI_DEVICE_ID_S3_968, quirk_s3_64M); static void quirk_io(struct pci_dev *dev, int pos, unsigned int size, const char *name) { u32 region; struct pci_bus_region bus_region; struct resource *res = dev->resource + pos; const char *res_name = pci_resource_name(dev, pos); pci_read_config_dword(dev, PCI_BASE_ADDRESS_0 + (pos << 2), ®ion); if (!region) return; res->name = pci_name(dev); res->flags = region & ~PCI_BASE_ADDRESS_IO_MASK; res->flags |= (IORESOURCE_IO | IORESOURCE_PCI_FIXED | IORESOURCE_SIZEALIGN); region &= ~(size - 1); /* Convert from PCI bus to resource space */ bus_region.start = region; bus_region.end = region + size - 1; pcibios_bus_to_resource(dev->bus, res, &bus_region); pci_info(dev, FW_BUG "%s %pR: %s quirk\n", res_name, res, name); } /* * Some CS5536 BIOSes (for example, the Soekris NET5501 board w/ comBIOS * ver. 1.33 20070103) don't set the correct ISA PCI region header info. * BAR0 should be 8 bytes; instead, it may be set to something like 8k * (which conflicts w/ BAR1's memory range). * * CS553x's ISA PCI BARs may also be read-only (ref: * https://bugzilla.kernel.org/show_bug.cgi?id=85991 - Comment #4 forward). */ static void quirk_cs5536_vsa(struct pci_dev *dev) { static char *name = "CS5536 ISA bridge"; if (pci_resource_len(dev, 0) != 8) { quirk_io(dev, 0, 8, name); /* SMB */ quirk_io(dev, 1, 256, name); /* GPIO */ quirk_io(dev, 2, 64, name); /* MFGPT */ pci_info(dev, "%s bug detected (incorrect header); workaround applied\n", name); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CS5536_ISA, quirk_cs5536_vsa); static void quirk_io_region(struct pci_dev *dev, int port, unsigned int size, int nr, const char *name) { u16 region; struct pci_bus_region bus_region; struct resource *res = dev->resource + nr; pci_read_config_word(dev, port, ®ion); region &= ~(size - 1); if (!region) return; res->name = pci_name(dev); res->flags = IORESOURCE_IO; /* Convert from PCI bus to resource space */ bus_region.start = region; bus_region.end = region + size - 1; pcibios_bus_to_resource(dev->bus, res, &bus_region); /* * "res" is typically a bridge window resource that's not being * used for a bridge window, so it's just a place to stash this * non-standard resource. Printing "nr" or pci_resource_name() of * it doesn't really make sense. */ if (!pci_claim_resource(dev, nr)) pci_info(dev, "quirk: %pR claimed by %s\n", res, name); } /* * ATI Northbridge setups MCE the processor if you even read somewhere * between 0x3b0->0x3bb or read 0x3d3 */ static void quirk_ati_exploding_mce(struct pci_dev *dev) { pci_info(dev, "ATI Northbridge, reserving I/O ports 0x3b0 to 0x3bb\n"); /* Mae rhaid i ni beidio ag edrych ar y lleoliadiau I/O hyn */ request_region(0x3b0, 0x0C, "RadeonIGP"); request_region(0x3d3, 0x01, "RadeonIGP"); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS100, quirk_ati_exploding_mce); /* * In the AMD NL platform, this device ([1022:7912]) has a class code of * PCI_CLASS_SERIAL_USB_XHCI (0x0c0330), which means the xhci driver will * claim it. The same applies on the VanGogh platform device ([1022:163a]). * * But the dwc3 driver is a more specific driver for this device, and we'd * prefer to use it instead of xhci. To prevent xhci from claiming the * device, change the class code to 0x0c03fe, which the PCI r3.0 spec * defines as "USB device (not host controller)". The dwc3 driver can then * claim it based on its Vendor and Device ID. */ static void quirk_amd_dwc_class(struct pci_dev *pdev) { u32 class = pdev->class; if (class != PCI_CLASS_SERIAL_USB_DEVICE) { /* Use "USB Device (not host controller)" class */ pdev->class = PCI_CLASS_SERIAL_USB_DEVICE; pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n", class, pdev->class); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB, quirk_amd_dwc_class); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VANGOGH_USB, quirk_amd_dwc_class); /* * Synopsys USB 3.x host HAPS platform has a class code of * PCI_CLASS_SERIAL_USB_XHCI, and xhci driver can claim it. However, these * devices should use dwc3-haps driver. Change these devices' class code to * PCI_CLASS_SERIAL_USB_DEVICE to prevent the xhci-pci driver from claiming * them. */ static void quirk_synopsys_haps(struct pci_dev *pdev) { u32 class = pdev->class; switch (pdev->device) { case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3: case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB3_AXI: case PCI_DEVICE_ID_SYNOPSYS_HAPSUSB31: pdev->class = PCI_CLASS_SERIAL_USB_DEVICE; pci_info(pdev, "PCI class overridden (%#08x -> %#08x) so dwc3 driver can claim this instead of xhci\n", class, pdev->class); break; } } DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_SYNOPSYS, PCI_ANY_ID, PCI_CLASS_SERIAL_USB_XHCI, 0, quirk_synopsys_haps); /* * Let's make the southbridge information explicit instead of having to * worry about people probing the ACPI areas, for example.. (Yes, it * happens, and if you read the wrong ACPI register it will put the machine * to sleep with no way of waking it up again. Bummer). * * ALI M7101: Two IO regions pointed to by words at * 0xE0 (64 bytes of ACPI registers) * 0xE2 (32 bytes of SMB registers) */ static void quirk_ali7101_acpi(struct pci_dev *dev) { quirk_io_region(dev, 0xE0, 64, PCI_BRIDGE_RESOURCES, "ali7101 ACPI"); quirk_io_region(dev, 0xE2, 32, PCI_BRIDGE_RESOURCES+1, "ali7101 SMB"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M7101, quirk_ali7101_acpi); static void piix4_io_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) { u32 devres; u32 mask, size, base; pci_read_config_dword(dev, port, &devres); if ((devres & enable) != enable) return; mask = (devres >> 16) & 15; base = devres & 0xffff; size = 16; for (;;) { unsigned int bit = size >> 1; if ((bit & mask) == bit) break; size = bit; } /* * For now we only print it out. Eventually we'll want to * reserve it (at least if it's in the 0x1000+ range), but * let's get enough confirmation reports first. */ base &= -size; pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base + size - 1); } static void piix4_mem_quirk(struct pci_dev *dev, const char *name, unsigned int port, unsigned int enable) { u32 devres; u32 mask, size, base; pci_read_config_dword(dev, port, &devres); if ((devres & enable) != enable) return; base = devres & 0xffff0000; mask = (devres & 0x3f) << 16; size = 128 << 16; for (;;) { unsigned int bit = size >> 1; if ((bit & mask) == bit) break; size = bit; } /* * For now we only print it out. Eventually we'll want to * reserve it, but let's get enough confirmation reports first. */ base &= -size; pci_info(dev, "%s MMIO at %04x-%04x\n", name, base, base + size - 1); } /* * PIIX4 ACPI: Two IO regions pointed to by longwords at * 0x40 (64 bytes of ACPI registers) * 0x90 (16 bytes of SMB registers) * and a few strange programmable PIIX4 device resources. */ static void quirk_piix4_acpi(struct pci_dev *dev) { u32 res_a; quirk_io_region(dev, 0x40, 64, PCI_BRIDGE_RESOURCES, "PIIX4 ACPI"); quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+1, "PIIX4 SMB"); /* Device resource A has enables for some of the other ones */ pci_read_config_dword(dev, 0x5c, &res_a); piix4_io_quirk(dev, "PIIX4 devres B", 0x60, 3 << 21); piix4_io_quirk(dev, "PIIX4 devres C", 0x64, 3 << 21); /* Device resource D is just bitfields for static resources */ /* Device 12 enabled? */ if (res_a & (1 << 29)) { piix4_io_quirk(dev, "PIIX4 devres E", 0x68, 1 << 20); piix4_mem_quirk(dev, "PIIX4 devres F", 0x6c, 1 << 7); } /* Device 13 enabled? */ if (res_a & (1 << 30)) { piix4_io_quirk(dev, "PIIX4 devres G", 0x70, 1 << 20); piix4_mem_quirk(dev, "PIIX4 devres H", 0x74, 1 << 7); } piix4_io_quirk(dev, "PIIX4 devres I", 0x78, 1 << 20); piix4_io_quirk(dev, "PIIX4 devres J", 0x7c, 1 << 20); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi); #define ICH_PMBASE 0x40 #define ICH_ACPI_CNTL 0x44 #define ICH4_ACPI_EN 0x10 #define ICH6_ACPI_EN 0x80 #define ICH4_GPIOBASE 0x58 #define ICH4_GPIO_CNTL 0x5c #define ICH4_GPIO_EN 0x10 #define ICH6_GPIOBASE 0x48 #define ICH6_GPIO_CNTL 0x4c #define ICH6_GPIO_EN 0x10 /* * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at * 0x40 (128 bytes of ACPI, GPIO & TCO registers) * 0x58 (64 bytes of GPIO I/O space) */ static void quirk_ich4_lpc_acpi(struct pci_dev *dev) { u8 enable; /* * The check for PCIBIOS_MIN_IO is to ensure we won't create a conflict * with low legacy (and fixed) ports. We don't know the decoding * priority and can't tell whether the legacy device or the one created * here is really at that address. This happens on boards with broken * BIOSes. */ pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable); if (enable & ICH4_ACPI_EN) quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO"); pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable); if (enable & ICH4_GPIO_EN) quirk_io_region(dev, ICH4_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, quirk_ich4_lpc_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_10, quirk_ich4_lpc_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, quirk_ich4_lpc_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, quirk_ich4_lpc_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, quirk_ich4_lpc_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, quirk_ich4_lpc_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, quirk_ich4_lpc_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, quirk_ich4_lpc_acpi); static void ich6_lpc_acpi_gpio(struct pci_dev *dev) { u8 enable; pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable); if (enable & ICH6_ACPI_EN) quirk_io_region(dev, ICH_PMBASE, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO"); pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable); if (enable & ICH6_GPIO_EN) quirk_io_region(dev, ICH6_GPIOBASE, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO"); } static void ich6_lpc_generic_decode(struct pci_dev *dev, unsigned int reg, const char *name, int dynsize) { u32 val; u32 size, base; pci_read_config_dword(dev, reg, &val); /* Enabled? */ if (!(val & 1)) return; base = val & 0xfffc; if (dynsize) { /* * This is not correct. It is 16, 32 or 64 bytes depending on * register D31:F0:ADh bits 5:4. * * But this gets us at least _part_ of it. */ size = 16; } else { size = 128; } base &= ~(size-1); /* * Just print it out for now. We should reserve it after more * debugging. */ pci_info(dev, "%s PIO at %04x-%04x\n", name, base, base+size-1); } static void quirk_ich6_lpc(struct pci_dev *dev) { /* Shared ACPI/GPIO decode with all ICH6+ */ ich6_lpc_acpi_gpio(dev); /* ICH6-specific generic IO decode */ ich6_lpc_generic_decode(dev, 0x84, "LPC Generic IO decode 1", 0); ich6_lpc_generic_decode(dev, 0x88, "LPC Generic IO decode 2", 1); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, quirk_ich6_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, quirk_ich6_lpc); static void ich7_lpc_generic_decode(struct pci_dev *dev, unsigned int reg, const char *name) { u32 val; u32 mask, base; pci_read_config_dword(dev, reg, &val); /* Enabled? */ if (!(val & 1)) return; /* IO base in bits 15:2, mask in bits 23:18, both are dword-based */ base = val & 0xfffc; mask = (val >> 16) & 0xfc; mask |= 3; /* * Just print it out for now. We should reserve it after more * debugging. */ pci_info(dev, "%s PIO at %04x (mask %04x)\n", name, base, mask); } /* ICH7-10 has the same common LPC generic IO decode registers */ static void quirk_ich7_lpc(struct pci_dev *dev) { /* We share the common ACPI/GPIO decode with ICH6 */ ich6_lpc_acpi_gpio(dev); /* And have 4 ICH7+ generic decodes */ ich7_lpc_generic_decode(dev, 0x84, "ICH7 LPC Generic IO decode 1"); ich7_lpc_generic_decode(dev, 0x88, "ICH7 LPC Generic IO decode 2"); ich7_lpc_generic_decode(dev, 0x8c, "ICH7 LPC Generic IO decode 3"); ich7_lpc_generic_decode(dev, 0x90, "ICH7 LPC Generic IO decode 4"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_0, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_2, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_3, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_4, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_2, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_4, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_8, quirk_ich7_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH10_1, quirk_ich7_lpc); /* * VIA ACPI: One IO region pointed to by longword at * 0x48 or 0x20 (256 bytes of ACPI registers) */ static void quirk_vt82c586_acpi(struct pci_dev *dev) { if (dev->revision & 0x10) quirk_io_region(dev, 0x48, 256, PCI_BRIDGE_RESOURCES, "vt82c586 ACPI"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_vt82c586_acpi); /* * VIA VT82C686 ACPI: Three IO region pointed to by (long)words at * 0x48 (256 bytes of ACPI registers) * 0x70 (128 bytes of hardware monitoring register) * 0x90 (16 bytes of SMB registers) */ static void quirk_vt82c686_acpi(struct pci_dev *dev) { quirk_vt82c586_acpi(dev); quirk_io_region(dev, 0x70, 128, PCI_BRIDGE_RESOURCES+1, "vt82c686 HW-mon"); quirk_io_region(dev, 0x90, 16, PCI_BRIDGE_RESOURCES+2, "vt82c686 SMB"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_vt82c686_acpi); /* * VIA VT8235 ISA Bridge: Two IO regions pointed to by words at * 0x88 (128 bytes of power management registers) * 0xd0 (16 bytes of SMB registers) */ static void quirk_vt8235_acpi(struct pci_dev *dev) { quirk_io_region(dev, 0x88, 128, PCI_BRIDGE_RESOURCES, "vt8235 PM"); quirk_io_region(dev, 0xd0, 16, PCI_BRIDGE_RESOURCES+1, "vt8235 SMB"); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_vt8235_acpi); /* * TI XIO2000a PCIe-PCI Bridge erroneously reports it supports fast * back-to-back: Disable fast back-to-back on the secondary bus segment */ static void quirk_xio2000a(struct pci_dev *dev) { struct pci_dev *pdev; u16 command; pci_warn(dev, "TI XIO2000a quirk detected; secondary bus fast back-to-back transfers disabled\n"); list_for_each_entry(pdev, &dev->subordinate->devices, bus_list) { pci_read_config_word(pdev, PCI_COMMAND, &command); if (command & PCI_COMMAND_FAST_BACK) pci_write_config_word(pdev, PCI_COMMAND, command & ~PCI_COMMAND_FAST_BACK); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_XIO2000A, quirk_xio2000a); #ifdef CONFIG_X86_IO_APIC #include <asm/io_apic.h> /* * VIA 686A/B: If an IO-APIC is active, we need to route all on-chip * devices to the external APIC. * * TODO: When we have device-specific interrupt routers, this code will go * away from quirks. */ static void quirk_via_ioapic(struct pci_dev *dev) { u8 tmp; if (nr_ioapics < 1) tmp = 0; /* nothing routed to external APIC */ else tmp = 0x1f; /* all known bits (4-0) routed to external APIC */ pci_info(dev, "%s VIA external APIC routing\n", tmp ? "Enabling" : "Disabling"); /* Offset 0x58: External APIC IRQ output control */ pci_write_config_byte(dev, 0x58, tmp); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_ioapic); /* * VIA 8237: Some BIOSes don't set the 'Bypass APIC De-Assert Message' Bit. * This leads to doubled level interrupt rates. * Set this bit to get rid of cycle wastage. * Otherwise uncritical. */ static void quirk_via_vt8237_bypass_apic_deassert(struct pci_dev *dev) { u8 misc_control2; #define BYPASS_APIC_DEASSERT 8 pci_read_config_byte(dev, 0x5B, &misc_control2); if (!(misc_control2 & BYPASS_APIC_DEASSERT)) { pci_info(dev, "Bypassing VIA 8237 APIC De-Assert Message\n"); pci_write_config_byte(dev, 0x5B, misc_control2|BYPASS_APIC_DEASSERT); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_vt8237_bypass_apic_deassert); /* * The AMD IO-APIC can hang the box when an APIC IRQ is masked. * We check all revs >= B0 (yet not in the pre production!) as the bug * is currently marked NoFix * * We have multiple reports of hangs with this chipset that went away with * noapic specified. For the moment we assume it's the erratum. We may be wrong * of course. However the advice is demonstrably good even if so. */ static void quirk_amd_ioapic(struct pci_dev *dev) { if (dev->revision >= 0x02) { pci_warn(dev, "I/O APIC: AMD Erratum #22 may be present. In the event of instability try\n"); pci_warn(dev, " : booting with the \"noapic\" option\n"); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7410, quirk_amd_ioapic); #endif /* CONFIG_X86_IO_APIC */ #if defined(CONFIG_ARM64) && defined(CONFIG_PCI_ATS) static void quirk_cavium_sriov_rnm_link(struct pci_dev *dev) { /* Fix for improper SR-IOV configuration on Cavium cn88xx RNM device */ if (dev->subsystem_device == 0xa118) dev->sriov->link = dev->devfn; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CAVIUM, 0xa018, quirk_cavium_sriov_rnm_link); #endif /* * Some settings of MMRBC can lead to data corruption so block changes. * See AMD 8131 HyperTransport PCI-X Tunnel Revision Guide */ static void quirk_amd_8131_mmrbc(struct pci_dev *dev) { if (dev->subordinate && dev->revision <= 0x12) { pci_info(dev, "AMD8131 rev %x detected; disabling PCI-X MMRBC\n", dev->revision); dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MMRBC; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_amd_8131_mmrbc); /* * FIXME: it is questionable that quirk_via_acpi() is needed. It shows up * as an ISA bridge, and does not support the PCI_INTERRUPT_LINE register * at all. Therefore it seems like setting the pci_dev's IRQ to the value * of the ACPI SCI interrupt is only done for convenience. * -jgarzik */ static void quirk_via_acpi(struct pci_dev *d) { u8 irq; /* VIA ACPI device: SCI IRQ line in PCI config byte 0x42 */ pci_read_config_byte(d, 0x42, &irq); irq &= 0xf; if (irq && (irq != 2)) d->irq = irq; } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi); /* VIA bridges which have VLink */ static int via_vlink_dev_lo = -1, via_vlink_dev_hi = 18; static void quirk_via_bridge(struct pci_dev *dev) { /* See what bridge we have and find the device ranges */ switch (dev->device) { case PCI_DEVICE_ID_VIA_82C686: /* * The VT82C686 is special; it attaches to PCI and can have * any device number. All its subdevices are functions of * that single device. */ via_vlink_dev_lo = PCI_SLOT(dev->devfn); via_vlink_dev_hi = PCI_SLOT(dev->devfn); break; case PCI_DEVICE_ID_VIA_8237: case PCI_DEVICE_ID_VIA_8237A: via_vlink_dev_lo = 15; break; case PCI_DEVICE_ID_VIA_8235: via_vlink_dev_lo = 16; break; case PCI_DEVICE_ID_VIA_8231: case PCI_DEVICE_ID_VIA_8233_0: case PCI_DEVICE_ID_VIA_8233A: case PCI_DEVICE_ID_VIA_8233C_0: via_vlink_dev_lo = 17; break; } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686, quirk_via_bridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8231, quirk_via_bridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233_0, quirk_via_bridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233A, quirk_via_bridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8233C_0, quirk_via_bridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, quirk_via_bridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, quirk_via_bridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237A, quirk_via_bridge); /* * quirk_via_vlink - VIA VLink IRQ number update * @dev: PCI device * * If the device we are dealing with is on a PIC IRQ we need to ensure that * the IRQ line register which usually is not relevant for PCI cards, is * actually written so that interrupts get sent to the right place. * * We only do this on systems where a VIA south bridge was detected, and * only for VIA devices on the motherboard (see quirk_via_bridge above). */ static void quirk_via_vlink(struct pci_dev *dev) { u8 irq, new_irq; /* Check if we have VLink at all */ if (via_vlink_dev_lo == -1) return; new_irq = dev->irq; /* Don't quirk interrupts outside the legacy IRQ range */ if (!new_irq || new_irq > 15) return; /* Internal device ? */ if (dev->bus->number != 0 || PCI_SLOT(dev->devfn) > via_vlink_dev_hi || PCI_SLOT(dev->devfn) < via_vlink_dev_lo) return; /* * This is an internal VLink device on a PIC interrupt. The BIOS * ought to have set this but may not have, so we redo it. */ pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq); if (new_irq != irq) { pci_info(dev, "VIA VLink IRQ fixup, from %d to %d\n", irq, new_irq); udelay(15); /* unknown if delay really needed */ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq); } } DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_vlink); /* * VIA VT82C598 has its device ID settable and many BIOSes set it to the ID * of VT82C597 for backward compatibility. We need to switch it off to be * able to recognize the real type of the chip. */ static void quirk_vt82c598_id(struct pci_dev *dev) { pci_write_config_byte(dev, 0xfc, 0); pci_read_config_word(dev, PCI_DEVICE_ID, &dev->device); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C597_0, quirk_vt82c598_id); /* * CardBus controllers have a legacy base address that enables them to * respond as i82365 pcmcia controllers. We don't want them to do this * even if the Linux CardBus driver is not loaded, because the Linux i82365 * driver does not (and should not) handle CardBus. */ static void quirk_cardbus_legacy(struct pci_dev *dev) { pci_write_config_dword(dev, PCI_CB_LEGACY_MODE_BASE, 0); } DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy); DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_BRIDGE_CARDBUS, 8, quirk_cardbus_legacy); /* * Following the PCI ordering rules is optional on the AMD762. I'm not sure * what the designers were smoking but let's not inhale... * * To be fair to AMD, it follows the spec by default, it's BIOS people who * turn it off! */ static void quirk_amd_ordering(struct pci_dev *dev) { u32 pcic; pci_read_config_dword(dev, 0x4C, &pcic); if ((pcic & 6) != 6) { pcic |= 6; pci_warn(dev, "BIOS failed to enable PCI standards compliance; fixing this error\n"); pci_write_config_dword(dev, 0x4C, pcic); pci_read_config_dword(dev, 0x84, &pcic); pcic |= (1 << 23); /* Required in this mode */ pci_write_config_dword(dev, 0x84, pcic); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_FE_GATE_700C, quirk_amd_ordering); /* * DreamWorks-provided workaround for Dunord I-3000 problem * * This card decodes and responds to addresses not apparently assigned to * it. We force a larger allocation to ensure that nothing gets put too * close to it. */ static void quirk_dunord(struct pci_dev *dev) { struct resource *r = &dev->resource[1]; r->flags |= IORESOURCE_UNSET; r->start = 0; r->end = 0xffffff; } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_DUNORD, PCI_DEVICE_ID_DUNORD_I3000, quirk_dunord); /* * i82380FB mobile docking controller: its PCI-to-PCI bridge is subtractive * decoding (transparent), and does indicate this in the ProgIf. * Unfortunately, the ProgIf value is wrong - 0x80 instead of 0x01. */ static void quirk_transparent_bridge(struct pci_dev *dev) { dev->transparent = 1; } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82380FB, quirk_transparent_bridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA, 0x605, quirk_transparent_bridge); /* * Common misconfiguration of the MediaGX/Geode PCI master that will reduce * PCI bandwidth from 70MB/s to 25MB/s. See the GXM/GXLV/GX1 datasheets * found at http://www.national.com/analog for info on what these bits do. * <christer@weinigel.se> */ static void quirk_mediagx_master(struct pci_dev *dev) { u8 reg; pci_read_config_byte(dev, 0x41, ®); if (reg & 2) { reg &= ~2; pci_info(dev, "Fixup for MediaGX/Geode Slave Disconnect Boundary (0x41=0x%02x)\n", reg); pci_write_config_byte(dev, 0x41, reg); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_PCI_MASTER, quirk_mediagx_master); /* * Ensure C0 rev restreaming is off. This is normally done by the BIOS but * in the odd case it is not the results are corruption hence the presence * of a Linux check. */ static void quirk_disable_pxb(struct pci_dev *pdev) { u16 config; if (pdev->revision != 0x04) /* Only C0 requires this */ return; pci_read_config_word(pdev, 0x40, &config); if (config & (1<<6)) { config &= ~(1<<6); pci_write_config_word(pdev, 0x40, config); pci_info(pdev, "C0 revision 450NX. Disabling PCI restreaming\n"); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb); static void quirk_amd_ide_mode(struct pci_dev *pdev) { /* set SBX00/Hudson-2 SATA in IDE mode to AHCI mode */ u8 tmp; pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &tmp); if (tmp == 0x01) { pci_read_config_byte(pdev, 0x40, &tmp); pci_write_config_byte(pdev, 0x40, tmp|1); pci_write_config_byte(pdev, 0x9, 1); pci_write_config_byte(pdev, 0xa, 6); pci_write_config_byte(pdev, 0x40, tmp); pdev->class = PCI_CLASS_STORAGE_SATA_AHCI; pci_info(pdev, "set SATA to AHCI mode\n"); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP600_SATA, quirk_amd_ide_mode); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP700_SATA, quirk_amd_ide_mode); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_HUDSON2_SATA_IDE, quirk_amd_ide_mode); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AMD, 0x7900, quirk_amd_ide_mode); /* Serverworks CSB5 IDE does not fully support native mode */ static void quirk_svwks_csb5ide(struct pci_dev *pdev) { u8 prog; pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); if (prog & 5) { prog &= ~5; pdev->class &= ~5; pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); /* PCI layer will sort out resources */ } } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, quirk_svwks_csb5ide); /* Intel 82801CAM ICH3-M datasheet says IDE modes must be the same */ static void quirk_ide_samemode(struct pci_dev *pdev) { u8 prog; pci_read_config_byte(pdev, PCI_CLASS_PROG, &prog); if (((prog & 1) && !(prog & 4)) || ((prog & 4) && !(prog & 1))) { pci_info(pdev, "IDE mode mismatch; forcing legacy mode\n"); prog &= ~5; pdev->class &= ~5; pci_write_config_byte(pdev, PCI_CLASS_PROG, prog); } } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode); /* Some ATA devices break if put into D3 */ static void quirk_no_ata_d3(struct pci_dev *pdev) { pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3; } /* Quirk the legacy ATA devices only. The AHCI ones are ok */ DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); /* ALi loses some register settings that we cannot then restore */ DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); /* VIA comes back fine but we need to keep it alive or ACPI GTM failures occur when mode detecting */ DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_VIA, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_no_ata_d3); /* * This was originally an Alpha-specific thing, but it really fits here. * The i82375 PCI/EISA bridge appears as non-classified. Fix that. */ static void quirk_eisa_bridge(struct pci_dev *dev) { dev->class = PCI_CLASS_BRIDGE_EISA << 8; } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82375, quirk_eisa_bridge); /* * On ASUS P4B boards, the SMBus PCI Device within the ICH2/4 southbridge * is not activated. The myth is that Asus said that they do not want the * users to be irritated by just another PCI Device in the Win98 device * manager. (see the file prog/hotplug/README.p4b in the lm_sensors * package 2.7.0 for details) * * The SMBus PCI Device can be activated by setting a bit in the ICH LPC * bridge. Unfortunately, this device has no subvendor/subdevice ID. So it * becomes necessary to do this tweak in two steps -- the chosen trigger * is either the Host bridge (preferred) or on-board VGA controller. * * Note that we used to unhide the SMBus that way on Toshiba laptops * (Satellite A40 and Tecra M2) but then found that the thermal management * was done by SMM code, which could cause unsynchronized concurrent * accesses to the SMBus registers, with potentially bad effects. Thus you * should be very careful when adding new entries: if SMM is accessing the * Intel SMBus, this is a very good reason to leave it hidden. * * Likewise, many recent laptops use ACPI for thermal management. If the * ACPI DSDT code accesses the SMBus, then Linux should not access it * natively, and keeping the SMBus hidden is the right thing to do. If you * are about to add an entry in the table below, please first disassemble * the DSDT and double-check that there is no code accessing the SMBus. */ static int asus_hides_smbus; static void asus_hides_smbus_hostbridge(struct pci_dev *dev) { if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { if (dev->device == PCI_DEVICE_ID_INTEL_82845_HB) switch (dev->subsystem_device) { case 0x8025: /* P4B-LX */ case 0x8070: /* P4B */ case 0x8088: /* P4B533 */ case 0x1626: /* L3C notebook */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82845G_HB) switch (dev->subsystem_device) { case 0x80b1: /* P4GE-V */ case 0x80b2: /* P4PE */ case 0x8093: /* P4B533-V */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82850_HB) switch (dev->subsystem_device) { case 0x8030: /* P4T533 */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_7205_0) switch (dev->subsystem_device) { case 0x8070: /* P4G8X Deluxe */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_E7501_MCH) switch (dev->subsystem_device) { case 0x80c9: /* PU-DLS */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82855GM_HB) switch (dev->subsystem_device) { case 0x1751: /* M2N notebook */ case 0x1821: /* M5N notebook */ case 0x1897: /* A6L notebook */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) switch (dev->subsystem_device) { case 0x184b: /* W1N notebook */ case 0x186a: /* M6Ne notebook */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) switch (dev->subsystem_device) { case 0x80f2: /* P4P800-X */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82915GM_HB) switch (dev->subsystem_device) { case 0x1882: /* M6V notebook */ case 0x1977: /* A6VA notebook */ asus_hides_smbus = 1; } } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_HP)) { if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) switch (dev->subsystem_device) { case 0x088C: /* HP Compaq nc8000 */ case 0x0890: /* HP Compaq nc6000 */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82865_HB) switch (dev->subsystem_device) { case 0x12bc: /* HP D330L */ case 0x12bd: /* HP D530 */ case 0x006a: /* HP Compaq nx9500 */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82875_HB) switch (dev->subsystem_device) { case 0x12bf: /* HP xw4100 */ asus_hides_smbus = 1; } } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_SAMSUNG)) { if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) switch (dev->subsystem_device) { case 0xC00C: /* Samsung P35 notebook */ asus_hides_smbus = 1; } } else if (unlikely(dev->subsystem_vendor == PCI_VENDOR_ID_COMPAQ)) { if (dev->device == PCI_DEVICE_ID_INTEL_82855PM_HB) switch (dev->subsystem_device) { case 0x0058: /* Compaq Evo N620c */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82810_IG3) switch (dev->subsystem_device) { case 0xB16C: /* Compaq Deskpro EP 401963-001 (PCA# 010174) */ /* Motherboard doesn't have Host bridge * subvendor/subdevice IDs, therefore checking * its on-board VGA controller */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82801DB_2) switch (dev->subsystem_device) { case 0x00b8: /* Compaq Evo D510 CMT */ case 0x00b9: /* Compaq Evo D510 SFF */ case 0x00ba: /* Compaq Evo D510 USDT */ /* Motherboard doesn't have Host bridge * subvendor/subdevice IDs and on-board VGA * controller is disabled if an AGP card is * inserted, therefore checking USB UHCI * Controller #1 */ asus_hides_smbus = 1; } else if (dev->device == PCI_DEVICE_ID_INTEL_82815_CGC) switch (dev->subsystem_device) { case 0x001A: /* Compaq Deskpro EN SSF P667 815E */ /* Motherboard doesn't have host bridge * subvendor/subdevice IDs, therefore checking * its on-board VGA controller */ asus_hides_smbus = 1; } } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845G_HB, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82850_HB, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_7205_0, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7501_MCH, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_IG3, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_2, asus_hides_smbus_hostbridge); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82815_CGC, asus_hides_smbus_hostbridge); static void asus_hides_smbus_lpc(struct pci_dev *dev) { u16 val; if (likely(!asus_hides_smbus)) return; pci_read_config_word(dev, 0xF2, &val); if (val & 0x8) { pci_write_config_word(dev, 0xF2, val & (~0x8)); pci_read_config_word(dev, 0xF2, &val); if (val & 0x8) pci_info(dev, "i801 SMBus device continues to play 'hide and seek'! 0x%x\n", val); else pci_info(dev, "Enabled i801 SMBus device\n"); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, asus_hides_smbus_lpc); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, asus_hides_smbus_lpc); /* It appears we just have one such device. If not, we have a warning */ static void __iomem *asus_rcba_base; static void asus_hides_smbus_lpc_ich6_suspend(struct pci_dev *dev) { u32 rcba; if (likely(!asus_hides_smbus)) return; WARN_ON(asus_rcba_base); pci_read_config_dword(dev, 0xF0, &rcba); /* use bits 31:14, 16 kB aligned */ asus_rcba_base = ioremap(rcba & 0xFFFFC000, 0x4000); if (asus_rcba_base == NULL) return; } static void asus_hides_smbus_lpc_ich6_resume_early(struct pci_dev *dev) { u32 val; if (likely(!asus_hides_smbus || !asus_rcba_base)) return; /* read the Function Disable register, dword mode only */ val = readl(asus_rcba_base + 0x3418); /* enable the SMBus device */ writel(val & 0xFFFFFFF7, asus_rcba_base + 0x3418); } static void asus_hides_smbus_lpc_ich6_resume(struct pci_dev *dev) { if (likely(!asus_hides_smbus || !asus_rcba_base)) return; iounmap(asus_rcba_base); asus_rcba_base = NULL; pci_info(dev, "Enabled ICH6/i801 SMBus device\n"); } static void asus_hides_smbus_lpc_ich6(struct pci_dev *dev) { asus_hides_smbus_lpc_ich6_suspend(dev); asus_hides_smbus_lpc_ich6_resume_early(dev); asus_hides_smbus_lpc_ich6_resume(dev); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6); DECLARE_PCI_FIXUP_SUSPEND(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_suspend); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, asus_hides_smbus_lpc_ich6_resume_early); /* SiS 96x south bridge: BIOS typically hides SMBus device... */ static void quirk_sis_96x_smbus(struct pci_dev *dev) { u8 val = 0; pci_read_config_byte(dev, 0x77, &val); if (val & 0x10) { pci_info(dev, "Enabling SiS 96x SMBus\n"); pci_write_config_byte(dev, 0x77, val & ~0x10); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_961, quirk_sis_96x_smbus); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_962, quirk_sis_96x_smbus); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_963, quirk_sis_96x_smbus); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_LPC, quirk_sis_96x_smbus); /* * ... This is further complicated by the fact that some SiS96x south * bridges pretend to be 85C503/5513 instead. In that case see if we * spotted a compatible north bridge to make sure. * (pci_find_device() doesn't work yet) * * We can also enable the sis96x bit in the discovery register.. */ #define SIS_DETECT_REGISTER 0x40 static void quirk_sis_503(struct pci_dev *dev) { u8 reg; u16 devid; pci_read_config_byte(dev, SIS_DETECT_REGISTER, ®); pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg | (1 << 6)); pci_read_config_word(dev, PCI_DEVICE_ID, &devid); if (((devid & 0xfff0) != 0x0960) && (devid != 0x0018)) { pci_write_config_byte(dev, SIS_DETECT_REGISTER, reg); return; } /* * Ok, it now shows up as a 96x. Run the 96x quirk by hand in case * it has already been processed. (Depends on link order, which is * apparently not guaranteed) */ dev->device = devid; quirk_sis_96x_smbus(dev); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_503, quirk_sis_503); /* * On ASUS A8V and A8V Deluxe boards, the onboard AC97 audio controller * and MC97 modem controller are disabled when a second PCI soundcard is * present. This patch, tweaking the VT8237 ISA bridge, enables them. * -- bjd */ static void asus_hides_ac97_lpc(struct pci_dev *dev) { u8 val; int asus_hides_ac97 = 0; if (likely(dev->subsystem_vendor == PCI_VENDOR_ID_ASUSTEK)) { if (dev->device == PCI_DEVICE_ID_VIA_8237) asus_hides_ac97 = 1; } if (!asus_hides_ac97) return; pci_read_config_byte(dev, 0x50, &val); if (val & 0xc0) { pci_write_config_byte(dev, 0x50, val & (~0xc0)); pci_read_config_byte(dev, 0x50, &val); if (val & 0xc0) pci_info(dev, "Onboard AC97/MC97 devices continue to play 'hide and seek'! 0x%x\n", val); else pci_info(dev, "Enabled onboard AC97/MC97 devices\n"); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, asus_hides_ac97_lpc); #if defined(CONFIG_ATA) || defined(CONFIG_ATA_MODULE) /* * If we are using libata we can drive this chip properly but must do this * early on to make the additional device appear during the PCI scanning. */ static void quirk_jmicron_ata(struct pci_dev *pdev) { u32 conf1, conf5, class; u8 hdr; /* Only poke fn 0 */ if (PCI_FUNC(pdev->devfn)) return; pci_read_config_dword(pdev, 0x40, &conf1); pci_read_config_dword(pdev, 0x80, &conf5); conf1 &= ~0x00CFF302; /* Clear bit 1, 8, 9, 12-19, 22, 23 */ conf5 &= ~(1 << 24); /* Clear bit 24 */ switch (pdev->device) { case PCI_DEVICE_ID_JMICRON_JMB360: /* SATA single port */ case PCI_DEVICE_ID_JMICRON_JMB362: /* SATA dual ports */ case PCI_DEVICE_ID_JMICRON_JMB364: /* SATA dual ports */ /* The controller should be in single function ahci mode */ conf1 |= 0x0002A100; /* Set 8, 13, 15, 17 */ break; case PCI_DEVICE_ID_JMICRON_JMB365: case PCI_DEVICE_ID_JMICRON_JMB366: /* Redirect IDE second PATA port to the right spot */ conf5 |= (1 << 24); fallthrough; case PCI_DEVICE_ID_JMICRON_JMB361: case PCI_DEVICE_ID_JMICRON_JMB363: case PCI_DEVICE_ID_JMICRON_JMB369: /* Enable dual function mode, AHCI on fn 0, IDE fn1 */ /* Set the class codes correctly and then direct IDE 0 */ conf1 |= 0x00C2A1B3; /* Set 0, 1, 4, 5, 7, 8, 13, 15, 17, 22, 23 */ break; case PCI_DEVICE_ID_JMICRON_JMB368: /* The controller should be in single function IDE mode */ conf1 |= 0x00C00000; /* Set 22, 23 */ break; } pci_write_config_dword(pdev, 0x40, conf1); pci_write_config_dword(pdev, 0x80, conf5); /* Update pdev accordingly */ pci_read_config_byte(pdev, PCI_HEADER_TYPE, &hdr); pdev->hdr_type = hdr & PCI_HEADER_TYPE_MASK; pdev->multifunction = FIELD_GET(PCI_HEADER_TYPE_MFD, hdr); pci_read_config_dword(pdev, PCI_CLASS_REVISION, &class); pdev->class = class >> 8; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB360, quirk_jmicron_ata); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB361, quirk_jmicron_ata); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB362, quirk_jmicron_ata); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB363, quirk_jmicron_ata); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB364, quirk_jmicron_ata); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB365, quirk_jmicron_ata); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB366, quirk_jmicron_ata); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB368, quirk_jmicron_ata); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB369, quirk_jmicron_ata); #endif static void quirk_jmicron_async_suspend(struct pci_dev *dev) { if (dev->multifunction) { device_disable_async_suspend(&dev->dev); pci_info(dev, "async suspend disabled to avoid multi-function power-on ordering issue\n"); } } DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_IDE, 8, quirk_jmicron_async_suspend); DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_JMICRON, PCI_ANY_ID, PCI_CLASS_STORAGE_SATA_AHCI, 0, quirk_jmicron_async_suspend); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x2362, quirk_jmicron_async_suspend); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_JMICRON, 0x236f, quirk_jmicron_async_suspend); #ifdef CONFIG_X86_IO_APIC static void quirk_alder_ioapic(struct pci_dev *pdev) { int i; if ((pdev->class >> 8) != 0xff00) return; /* * The first BAR is the location of the IO-APIC... we must * not touch this (and it's already covered by the fixmap), so * forcibly insert it into the resource tree. */ if (pci_resource_start(pdev, 0) && pci_resource_len(pdev, 0)) insert_resource(&iomem_resource, &pdev->resource[0]); /* * The next five BARs all seem to be rubbish, so just clean * them out. */ for (i = 1; i < PCI_STD_NUM_BARS; i++) memset(&pdev->resource[i], 0, sizeof(pdev->resource[i])); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EESSC, quirk_alder_ioapic); #endif static void quirk_no_msi(struct pci_dev *dev) { pci_info(dev, "avoiding MSI to work around a hardware defect\n"); dev->no_msi = 1; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4386, quirk_no_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4387, quirk_no_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4388, quirk_no_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4389, quirk_no_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x438a, quirk_no_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x438b, quirk_no_msi); static void quirk_pcie_mch(struct pci_dev *pdev) { pdev->no_msi = 1; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quirk_pcie_mch); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch); DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_HUAWEI, 0x1610, PCI_CLASS_BRIDGE_PCI, 8, quirk_pcie_mch); /* * HiSilicon KunPeng920 and KunPeng930 have devices appear as PCI but are * actually on the AMBA bus. These fake PCI devices can support SVA via * SMMU stall feature, by setting dma-can-stall for ACPI platforms. * * Normally stalling must not be enabled for PCI devices, since it would * break the PCI requirement for free-flowing writes and may lead to * deadlock. We expect PCI devices to support ATS and PRI if they want to * be fault-tolerant, so there's no ACPI binding to describe anything else, * even when a "PCI" device turns out to be a regular old SoC device * dressed up as a RCiEP and normal rules don't apply. */ static void quirk_huawei_pcie_sva(struct pci_dev *pdev) { struct property_entry properties[] = { PROPERTY_ENTRY_BOOL("dma-can-stall"), {}, }; if (pdev->revision != 0x21 && pdev->revision != 0x30) return; pdev->pasid_no_tlp = 1; /* * Set the dma-can-stall property on ACPI platforms. Device tree * can set it directly. */ if (!pdev->dev.of_node && device_create_managed_software_node(&pdev->dev, properties, NULL)) pci_warn(pdev, "could not add stall property"); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa250, quirk_huawei_pcie_sva); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa251, quirk_huawei_pcie_sva); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa255, quirk_huawei_pcie_sva); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa256, quirk_huawei_pcie_sva); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa258, quirk_huawei_pcie_sva); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_HUAWEI, 0xa259, quirk_huawei_pcie_sva); /* * It's possible for the MSI to get corrupted if SHPC and ACPI are used * together on certain PXH-based systems. */ static void quirk_pcie_pxh(struct pci_dev *dev) { dev->no_msi = 1; pci_warn(dev, "PXH quirk detected; SHPC device MSI disabled\n"); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh); /* * Some Intel PCI Express chipsets have trouble with downstream device * power management. */ static void quirk_intel_pcie_pm(struct pci_dev *dev) { pci_pm_d3hot_delay = 120; dev->no_d1d2 = 1; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2601, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2602, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2603, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2604, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2605, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2606, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2607, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2608, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2609, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260a, quirk_intel_pcie_pm); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x260b, quirk_intel_pcie_pm); static void quirk_d3hot_delay(struct pci_dev *dev, unsigned int delay) { if (dev->d3hot_delay >= delay) return; dev->d3hot_delay = delay; pci_info(dev, "extending delay after power-on from D3hot to %d msec\n", dev->d3hot_delay); } static void quirk_radeon_pm(struct pci_dev *dev) { if (dev->subsystem_vendor == PCI_VENDOR_ID_APPLE && dev->subsystem_device == 0x00e2) quirk_d3hot_delay(dev, 20); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6741, quirk_radeon_pm); /* * NVIDIA Ampere-based HDA controllers can wedge the whole device if a bus * reset is performed too soon after transition to D0, extend d3hot_delay * to previous effective default for all NVIDIA HDA controllers. */ static void quirk_nvidia_hda_pm(struct pci_dev *dev) { quirk_d3hot_delay(dev, 20); } DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_nvidia_hda_pm); /* * Ryzen5/7 XHCI controllers fail upon resume from runtime suspend or s2idle. * https://bugzilla.kernel.org/show_bug.cgi?id=205587 * * The kernel attempts to transition these devices to D3cold, but that seems * to be ineffective on the platforms in question; the PCI device appears to * remain on in D3hot state. The D3hot-to-D0 transition then requires an * extended delay in order to succeed. */ static void quirk_ryzen_xhci_d3hot(struct pci_dev *dev) { quirk_d3hot_delay(dev, 20); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e0, quirk_ryzen_xhci_d3hot); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x15e1, quirk_ryzen_xhci_d3hot); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x1639, quirk_ryzen_xhci_d3hot); #ifdef CONFIG_X86_IO_APIC static int dmi_disable_ioapicreroute(const struct dmi_system_id *d) { noioapicreroute = 1; pr_info("%s detected: disable boot interrupt reroute\n", d->ident); return 0; } static const struct dmi_system_id boot_interrupt_dmi_table[] = { /* * Systems to exclude from boot interrupt reroute quirks */ { .callback = dmi_disable_ioapicreroute, .ident = "ASUSTek Computer INC. M2N-LR", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "ASUSTek Computer INC."), DMI_MATCH(DMI_PRODUCT_NAME, "M2N-LR"), }, }, {} }; /* * Boot interrupts on some chipsets cannot be turned off. For these chipsets, * remap the original interrupt in the Linux kernel to the boot interrupt, so * that a PCI device's interrupt handler is installed on the boot interrupt * line instead. */ static void quirk_reroute_to_boot_interrupts_intel(struct pci_dev *dev) { dmi_check_system(boot_interrupt_dmi_table); if (noioapicquirk || noioapicreroute) return; dev->irq_reroute_variant = INTEL_IRQ_REROUTE_VARIANT; pci_info(dev, "rerouting interrupts for [%04x:%04x]\n", dev->vendor, dev->device); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_0, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80333_1, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_0, quirk_reroute_to_boot_interrupts_intel); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_80332_1, quirk_reroute_to_boot_interrupts_intel); /* * On some chipsets we can disable the generation of legacy INTx boot * interrupts. */ /* * IO-APIC1 on 6300ESB generates boot interrupts, see Intel order no * 300641-004US, section 5.7.3. * * Core IO on Xeon E5 1600/2600/4600, see Intel order no 326509-003. * Core IO on Xeon E5 v2, see Intel order no 329188-003. * Core IO on Xeon E7 v2, see Intel order no 329595-002. * Core IO on Xeon E5 v3, see Intel order no 330784-003. * Core IO on Xeon E7 v3, see Intel order no 332315-001US. * Core IO on Xeon E5 v4, see Intel order no 333810-002US. * Core IO on Xeon E7 v4, see Intel order no 332315-001US. * Core IO on Xeon D-1500, see Intel order no 332051-001. * Core IO on Xeon Scalable, see Intel order no 610950. */ #define INTEL_6300_IOAPIC_ABAR 0x40 /* Bus 0, Dev 29, Func 5 */ #define INTEL_6300_DISABLE_BOOT_IRQ (1<<14) #define INTEL_CIPINTRC_CFG_OFFSET 0x14C /* Bus 0, Dev 5, Func 0 */ #define INTEL_CIPINTRC_DIS_INTX_ICH (1<<25) static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev) { u16 pci_config_word; u32 pci_config_dword; if (noioapicquirk) return; switch (dev->device) { case PCI_DEVICE_ID_INTEL_ESB_10: pci_read_config_word(dev, INTEL_6300_IOAPIC_ABAR, &pci_config_word); pci_config_word |= INTEL_6300_DISABLE_BOOT_IRQ; pci_write_config_word(dev, INTEL_6300_IOAPIC_ABAR, pci_config_word); break; case 0x3c28: /* Xeon E5 1600/2600/4600 */ case 0x0e28: /* Xeon E5/E7 V2 */ case 0x2f28: /* Xeon E5/E7 V3,V4 */ case 0x6f28: /* Xeon D-1500 */ case 0x2034: /* Xeon Scalable Family */ pci_read_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET, &pci_config_dword); pci_config_dword |= INTEL_CIPINTRC_DIS_INTX_ICH; pci_write_config_dword(dev, INTEL_CIPINTRC_CFG_OFFSET, pci_config_dword); break; default: return; } pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", dev->vendor, dev->device); } /* * Device 29 Func 5 Device IDs of IO-APIC * containing ABAR—APIC1 Alternate Base Address Register */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_10, quirk_disable_intel_boot_interrupt); /* * Device 5 Func 0 Device IDs of Core IO modules/hubs * containing Coherent Interface Protocol Interrupt Control * * Device IDs obtained from volume 2 datasheets of commented * families above. */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x3c28, quirk_disable_intel_boot_interrupt); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0e28, quirk_disable_intel_boot_interrupt); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2f28, quirk_disable_intel_boot_interrupt); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x6f28, quirk_disable_intel_boot_interrupt); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2034, quirk_disable_intel_boot_interrupt); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x3c28, quirk_disable_intel_boot_interrupt); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x0e28, quirk_disable_intel_boot_interrupt); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2f28, quirk_disable_intel_boot_interrupt); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x6f28, quirk_disable_intel_boot_interrupt); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, 0x2034, quirk_disable_intel_boot_interrupt); /* Disable boot interrupts on HT-1000 */ #define BC_HT1000_FEATURE_REG 0x64 #define BC_HT1000_PIC_REGS_ENABLE (1<<0) #define BC_HT1000_MAP_IDX 0xC00 #define BC_HT1000_MAP_DATA 0xC01 static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev) { u32 pci_config_dword; u8 irq; if (noioapicquirk) return; pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword); pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword | BC_HT1000_PIC_REGS_ENABLE); for (irq = 0x10; irq < 0x10 + 32; irq++) { outb(irq, BC_HT1000_MAP_IDX); outb(0x00, BC_HT1000_MAP_DATA); } pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword); pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", dev->vendor, dev->device); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000SB, quirk_disable_broadcom_boot_interrupt); /* Disable boot interrupts on AMD and ATI chipsets */ /* * NOIOAMODE needs to be disabled to disable "boot interrupts". For AMD 8131 * rev. A0 and B0, NOIOAMODE needs to be disabled anyway to fix IO-APIC mode * (due to an erratum). */ #define AMD_813X_MISC 0x40 #define AMD_813X_NOIOAMODE (1<<0) #define AMD_813X_REV_B1 0x12 #define AMD_813X_REV_B2 0x13 static void quirk_disable_amd_813x_boot_interrupt(struct pci_dev *dev) { u32 pci_config_dword; if (noioapicquirk) return; if ((dev->revision == AMD_813X_REV_B1) || (dev->revision == AMD_813X_REV_B2)) return; pci_read_config_dword(dev, AMD_813X_MISC, &pci_config_dword); pci_config_dword &= ~AMD_813X_NOIOAMODE; pci_write_config_dword(dev, AMD_813X_MISC, pci_config_dword); pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", dev->vendor, dev->device); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_amd_813x_boot_interrupt); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, quirk_disable_amd_813x_boot_interrupt); #define AMD_8111_PCI_IRQ_ROUTING 0x56 static void quirk_disable_amd_8111_boot_interrupt(struct pci_dev *dev) { u16 pci_config_word; if (noioapicquirk) return; pci_read_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, &pci_config_word); if (!pci_config_word) { pci_info(dev, "boot interrupts on device [%04x:%04x] already disabled\n", dev->vendor, dev->device); return; } pci_write_config_word(dev, AMD_8111_PCI_IRQ_ROUTING, 0); pci_info(dev, "disabled boot interrupts on device [%04x:%04x]\n", dev->vendor, dev->device); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8111_SMBUS, quirk_disable_amd_8111_boot_interrupt); #endif /* CONFIG_X86_IO_APIC */ /* * Toshiba TC86C001 IDE controller reports the standard 8-byte BAR0 size * but the PIO transfers won't work if BAR0 falls at the odd 8 bytes. * Re-allocate the region if needed... */ static void quirk_tc86c001_ide(struct pci_dev *dev) { struct resource *r = &dev->resource[0]; if (r->start & 0x8) { r->flags |= IORESOURCE_UNSET; r->start = 0; r->end = 0xf; } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TOSHIBA_2, PCI_DEVICE_ID_TOSHIBA_TC86C001_IDE, quirk_tc86c001_ide); /* * PLX PCI 9050 PCI Target bridge controller has an erratum that prevents the * local configuration registers accessible via BAR0 (memory) or BAR1 (i/o) * being read correctly if bit 7 of the base address is set. * The BAR0 or BAR1 region may be disabled (size 0) or enabled (size 128). * Re-allocate the regions to a 256-byte boundary if necessary. */ static void quirk_plx_pci9050(struct pci_dev *dev) { unsigned int bar; /* Fixed in revision 2 (PCI 9052). */ if (dev->revision >= 2) return; for (bar = 0; bar <= 1; bar++) if (pci_resource_len(dev, bar) == 0x80 && (pci_resource_start(dev, bar) & 0x80)) { struct resource *r = &dev->resource[bar]; pci_info(dev, "Re-allocating PLX PCI 9050 BAR %u to length 256 to avoid bit 7 bug\n", bar); r->flags |= IORESOURCE_UNSET; r->start = 0; r->end = 0xff; } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050, quirk_plx_pci9050); /* * The following Meilhaus (vendor ID 0x1402) device IDs (amongst others) * may be using the PLX PCI 9050: 0x0630, 0x0940, 0x0950, 0x0960, 0x100b, * 0x1400, 0x140a, 0x140b, 0x14e0, 0x14ea, 0x14eb, 0x1604, 0x1608, 0x160c, * 0x168f, 0x2000, 0x2600, 0x3000, 0x810a, 0x810b. * * Currently, device IDs 0x2000 and 0x2600 are used by the Comedi "me_daq" * driver. */ DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2000, quirk_plx_pci9050); DECLARE_PCI_FIXUP_HEADER(0x1402, 0x2600, quirk_plx_pci9050); static void quirk_netmos(struct pci_dev *dev) { unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4; unsigned int num_serial = dev->subsystem_device & 0xf; /* * These Netmos parts are multiport serial devices with optional * parallel ports. Even when parallel ports are present, they * are identified as class SERIAL, which means the serial driver * will claim them. To prevent this, mark them as class OTHER. * These combo devices should be claimed by parport_serial. * * The subdevice ID is of the form 0x00PS, where <P> is the number * of parallel ports and <S> is the number of serial ports. */ switch (dev->device) { case PCI_DEVICE_ID_NETMOS_9835: /* Well, this rule doesn't hold for the following 9835 device */ if (dev->subsystem_vendor == PCI_VENDOR_ID_IBM && dev->subsystem_device == 0x0299) return; fallthrough; case PCI_DEVICE_ID_NETMOS_9735: case PCI_DEVICE_ID_NETMOS_9745: case PCI_DEVICE_ID_NETMOS_9845: case PCI_DEVICE_ID_NETMOS_9855: if (num_parallel) { pci_info(dev, "Netmos %04x (%u parallel, %u serial); changing class SERIAL to OTHER (use parport_serial)\n", dev->device, num_parallel, num_serial); dev->class = (PCI_CLASS_COMMUNICATION_OTHER << 8) | (dev->class & 0xff); } } } DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NETMOS, PCI_ANY_ID, PCI_CLASS_COMMUNICATION_SERIAL, 8, quirk_netmos); static void quirk_e100_interrupt(struct pci_dev *dev) { u16 command, pmcsr; u8 __iomem *csr; u8 cmd_hi; switch (dev->device) { /* PCI IDs taken from drivers/net/e100.c */ case 0x1029: case 0x1030 ... 0x1034: case 0x1038 ... 0x103E: case 0x1050 ... 0x1057: case 0x1059: case 0x1064 ... 0x106B: case 0x1091 ... 0x1095: case 0x1209: case 0x1229: case 0x2449: case 0x2459: case 0x245D: case 0x27DC: break; default: return; } /* * Some firmware hands off the e100 with interrupts enabled, * which can cause a flood of interrupts if packets are * received before the driver attaches to the device. So * disable all e100 interrupts here. The driver will * re-enable them when it's ready. */ pci_read_config_word(dev, PCI_COMMAND, &command); if (!(command & PCI_COMMAND_MEMORY) || !pci_resource_start(dev, 0)) return; /* * Check that the device is in the D0 power state. If it's not, * there is no point to look any further. */ if (dev->pm_cap) { pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr); if ((pmcsr & PCI_PM_CTRL_STATE_MASK) != PCI_D0) return; } /* Convert from PCI bus to resource space. */ csr = ioremap(pci_resource_start(dev, 0), 8); if (!csr) { pci_warn(dev, "Can't map e100 registers\n"); return; } cmd_hi = readb(csr + 3); if (cmd_hi == 0) { pci_warn(dev, "Firmware left e100 interrupts enabled; disabling\n"); writeb(1, csr + 3); } iounmap(csr); } DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET, 8, quirk_e100_interrupt); /* * The 82575 and 82598 may experience data corruption issues when transitioning * out of L0S. To prevent this we need to disable L0S on the PCIe link. */ static void quirk_disable_aspm_l0s(struct pci_dev *dev) { pci_info(dev, "Disabling L0s\n"); pci_disable_link_state(dev, PCIE_LINK_STATE_L0S); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a7, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10a9, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10b6, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c6, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c7, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10c8, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10d6, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10db, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10dd, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10e1, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10ec, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f1, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x10f4, quirk_disable_aspm_l0s); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1508, quirk_disable_aspm_l0s); static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev) { pci_info(dev, "Disabling ASPM L0s/L1\n"); pci_disable_link_state(dev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1); } /* * ASM1083/1085 PCIe-PCI bridge devices cause AER timeout errors on the * upstream PCIe root port when ASPM is enabled. At least L0s mode is affected; * disable both L0s and L1 for now to be safe. */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1); /* * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain * Link bit cleared after starting the link retrain process to allow this * process to finish. * * Affected devices: PI7C9X110, PI7C9X111SL, PI7C9X130. See also the * Pericom Errata Sheet PI7C9X111SLB_errata_rev1.2_102711.pdf. */ static void quirk_enable_clear_retrain_link(struct pci_dev *dev) { dev->clear_retrain_link = 1; pci_info(dev, "Enable PCIe Retrain Link quirk\n"); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PERICOM, 0xe110, quirk_enable_clear_retrain_link); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PERICOM, 0xe111, quirk_enable_clear_retrain_link); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_PERICOM, 0xe130, quirk_enable_clear_retrain_link); static void fixup_rev1_53c810(struct pci_dev *dev) { u32 class = dev->class; /* * rev 1 ncr53c810 chips don't set the class at all which means * they don't get their resources remapped. Fix that here. */ if (class) return; dev->class = PCI_CLASS_STORAGE_SCSI << 8; pci_info(dev, "NCR 53c810 rev 1 PCI class overridden (%#08x -> %#08x)\n", class, dev->class); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NCR, PCI_DEVICE_ID_NCR_53C810, fixup_rev1_53c810); /* Enable 1k I/O space granularity on the Intel P64H2 */ static void quirk_p64h2_1k_io(struct pci_dev *dev) { u16 en1k; pci_read_config_word(dev, 0x40, &en1k); if (en1k & 0x200) { pci_info(dev, "Enable I/O Space to 1KB granularity\n"); dev->io_window_1k = 1; } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io); /* * Under some circumstances, AER is not linked with extended capabilities. * Force it to be linked by setting the corresponding control bit in the * config space. */ static void quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev) { uint8_t b; if (pci_read_config_byte(dev, 0xf41, &b) == 0) { if (!(b & 0x20)) { pci_write_config_byte(dev, 0xf41, b | 0x20); pci_info(dev, "Linking AER extended capability\n"); } } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, quirk_nvidia_ck804_pcie_aer_ext_cap); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, quirk_nvidia_ck804_pcie_aer_ext_cap); static void quirk_via_cx700_pci_parking_caching(struct pci_dev *dev) { /* * Disable PCI Bus Parking and PCI Master read caching on CX700 * which causes unspecified timing errors with a VT6212L on the PCI * bus leading to USB2.0 packet loss. * * This quirk is only enabled if a second (on the external PCI bus) * VT6212L is found -- the CX700 core itself also contains a USB * host controller with the same PCI ID as the VT6212L. */ /* Count VT6212L instances */ struct pci_dev *p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, NULL); uint8_t b; /* * p should contain the first (internal) VT6212L -- see if we have * an external one by searching again. */ p = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235_USB_2, p); if (!p) return; pci_dev_put(p); if (pci_read_config_byte(dev, 0x76, &b) == 0) { if (b & 0x40) { /* Turn off PCI Bus Parking */ pci_write_config_byte(dev, 0x76, b ^ 0x40); pci_info(dev, "Disabling VIA CX700 PCI parking\n"); } } if (pci_read_config_byte(dev, 0x72, &b) == 0) { if (b != 0) { /* Turn off PCI Master read caching */ pci_write_config_byte(dev, 0x72, 0x0); /* Set PCI Master Bus time-out to "1x16 PCLK" */ pci_write_config_byte(dev, 0x75, 0x1); /* Disable "Read FIFO Timer" */ pci_write_config_byte(dev, 0x77, 0x0); pci_info(dev, "Disabling VIA CX700 PCI caching\n"); } } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0x324e, quirk_via_cx700_pci_parking_caching); static void quirk_brcm_5719_limit_mrrs(struct pci_dev *dev) { u32 rev; pci_read_config_dword(dev, 0xf4, &rev); /* Only CAP the MRRS if the device is a 5719 A0 */ if (rev == 0x05719000) { int readrq = pcie_get_readrq(dev); if (readrq > 2048) pcie_set_readrq(dev, 2048); } } DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5719, quirk_brcm_5719_limit_mrrs); /* * Originally in EDAC sources for i82875P: Intel tells BIOS developers to * hide device 6 which configures the overflow device access containing the * DRBs - this is where we expose device 6. * http://www.x86-secret.com/articles/tweak/pat/patsecrets-2.htm */ static void quirk_unhide_mch_dev6(struct pci_dev *dev) { u8 reg; if (pci_read_config_byte(dev, 0xF4, ®) == 0 && !(reg & 0x02)) { pci_info(dev, "Enabling MCH 'Overflow' Device\n"); pci_write_config_byte(dev, 0xF4, reg | 0x02); } } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82865_HB, quirk_unhide_mch_dev6); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82875_HB, quirk_unhide_mch_dev6); #ifdef CONFIG_PCI_MSI /* * Some chipsets do not support MSI. We cannot easily rely on setting * PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually some * other buses controlled by the chipset even if Linux is not aware of it. * Instead of setting the flag on all buses in the machine, simply disable * MSI globally. */ static void quirk_disable_all_msi(struct pci_dev *dev) { pci_no_msi(); pci_warn(dev, "MSI quirk detected; MSI disabled\n"); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SAMSUNG, 0xa5e3, quirk_disable_all_msi); /* Disable MSI on chipsets that are known to not support it */ static void quirk_disable_msi(struct pci_dev *dev) { if (dev->subordinate) { pci_warn(dev, "MSI quirk detected; subordinate MSI disabled\n"); dev->subordinate->bus_flags |= PCI_BUS_FLAGS_NO_MSI; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi); /* * The APC bridge device in AMD 780 family northbridges has some random * OEM subsystem ID in its vendor ID register (erratum 18), so instead * we use the possible vendor/device IDs of the host bridge for the * declared quirk, and search for the APC bridge by slot number. */ static void quirk_amd_780_apc_msi(struct pci_dev *host_bridge) { struct pci_dev *apc_bridge; apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0)); if (apc_bridge) { if (apc_bridge->device == 0x9602) quirk_disable_msi(apc_bridge); pci_dev_put(apc_bridge); } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi); /* * Go through the list of HyperTransport capabilities and return 1 if a HT * MSI capability is found and enabled. */ static int msi_ht_cap_enabled(struct pci_dev *dev) { int pos, ttl = PCI_FIND_CAP_TTL; pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); while (pos && ttl--) { u8 flags; if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, &flags) == 0) { pci_info(dev, "Found %s HT MSI Mapping\n", flags & HT_MSI_FLAGS_ENABLE ? "enabled" : "disabled"); return (flags & HT_MSI_FLAGS_ENABLE) != 0; } pos = pci_find_next_ht_capability(dev, pos, HT_CAPTYPE_MSI_MAPPING); } return 0; } /* Check the HyperTransport MSI mapping to know whether MSI is enabled or not */ static void quirk_msi_ht_cap(struct pci_dev *dev) { if (!msi_ht_cap_enabled(dev)) quirk_disable_msi(dev); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT2000_PCIE, quirk_msi_ht_cap); /* * The nVidia CK804 chipset may have 2 HT MSI mappings. MSI is supported * if the MSI capability is set in any of these mappings. */ static void quirk_nvidia_ck804_msi_ht_cap(struct pci_dev *dev) { struct pci_dev *pdev; /* * Check HT MSI cap on this chipset and the root one. A single one * having MSI is enough to be sure that MSI is supported. */ pdev = pci_get_slot(dev->bus, 0); if (!pdev) return; if (!msi_ht_cap_enabled(pdev)) quirk_msi_ht_cap(dev); pci_dev_put(pdev); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE, quirk_nvidia_ck804_msi_ht_cap); /* Force enable MSI mapping capability on HT bridges */ static void ht_enable_msi_mapping(struct pci_dev *dev) { int pos, ttl = PCI_FIND_CAP_TTL; pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); while (pos && ttl--) { u8 flags; if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, &flags) == 0) { pci_info(dev, "Enabling HT MSI Mapping\n"); pci_write_config_byte(dev, pos + HT_MSI_FLAGS, flags | HT_MSI_FLAGS_ENABLE); } pos = pci_find_next_ht_capability(dev, pos, HT_CAPTYPE_MSI_MAPPING); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_HT1000_PXB, ht_enable_msi_mapping); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8132_BRIDGE, ht_enable_msi_mapping); /* * The P5N32-SLI motherboards from Asus have a problem with MSI * for the MCP55 NIC. It is not yet determined whether the MSI problem * also affects other devices. As for now, turn off MSI for this device. */ static void nvenet_msi_disable(struct pci_dev *dev) { const char *board_name = dmi_get_system_info(DMI_BOARD_NAME); if (board_name && (strstr(board_name, "P5N32-SLI PREMIUM") || strstr(board_name, "P5N32-E SLI"))) { pci_info(dev, "Disabling MSI for MCP55 NIC on P5N32-SLI\n"); dev->no_msi = 1; } } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NVENET_15, nvenet_msi_disable); /* * PCIe spec r6.0 sec 6.1.4.3 says that if MSI/MSI-X is enabled, the device * can't use INTx interrupts. Tegra's PCIe Root Ports don't generate MSI * interrupts for PME and AER events; instead only INTx interrupts are * generated. Though Tegra's PCIe Root Ports can generate MSI interrupts * for other events, since PCIe specification doesn't support using a mix of * INTx and MSI/MSI-X, it is required to disable MSI interrupts to avoid port * service drivers registering their respective ISRs for MSIs. */ static void pci_quirk_nvidia_tegra_disable_rp_msi(struct pci_dev *dev) { dev->no_msi = 1; } DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad0, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad1, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x1ad2, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf0, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0bf1, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1c, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e1d, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e12, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0e13, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0fae, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x0faf, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e5, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x10e6, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229a, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229c, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_NVIDIA, 0x229e, PCI_CLASS_BRIDGE_PCI, 8, pci_quirk_nvidia_tegra_disable_rp_msi); /* * Some versions of the MCP55 bridge from Nvidia have a legacy IRQ routing * config register. This register controls the routing of legacy * interrupts from devices that route through the MCP55. If this register * is misprogrammed, interrupts are only sent to the BSP, unlike * conventional systems where the IRQ is broadcast to all online CPUs. Not * having this register set properly prevents kdump from booting up * properly, so let's make sure that we have it set correctly. * Note that this is an undocumented register. */ static void nvbridge_check_legacy_irq_routing(struct pci_dev *dev) { u32 cfg; if (!pci_find_capability(dev, PCI_CAP_ID_HT)) return; pci_read_config_dword(dev, 0x74, &cfg); if (cfg & ((1 << 2) | (1 << 15))) { pr_info("Rewriting IRQ routing register on MCP55\n"); cfg &= ~((1 << 2) | (1 << 15)); pci_write_config_dword(dev, 0x74, cfg); } } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V0, nvbridge_check_legacy_irq_routing); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_MCP55_BRIDGE_V4, nvbridge_check_legacy_irq_routing); static int ht_check_msi_mapping(struct pci_dev *dev) { int pos, ttl = PCI_FIND_CAP_TTL; int found = 0; /* Check if there is HT MSI cap or enabled on this device */ pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); while (pos && ttl--) { u8 flags; if (found < 1) found = 1; if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, &flags) == 0) { if (flags & HT_MSI_FLAGS_ENABLE) { if (found < 2) { found = 2; break; } } } pos = pci_find_next_ht_capability(dev, pos, HT_CAPTYPE_MSI_MAPPING); } return found; } static int host_bridge_with_leaf(struct pci_dev *host_bridge) { struct pci_dev *dev; int pos; int i, dev_no; int found = 0; dev_no = host_bridge->devfn >> 3; for (i = dev_no + 1; i < 0x20; i++) { dev = pci_get_slot(host_bridge->bus, PCI_DEVFN(i, 0)); if (!dev) continue; /* found next host bridge? */ pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); if (pos != 0) { pci_dev_put(dev); break; } if (ht_check_msi_mapping(dev)) { found = 1; pci_dev_put(dev); break; } pci_dev_put(dev); } return found; } #define PCI_HT_CAP_SLAVE_CTRL0 4 /* link control */ #define PCI_HT_CAP_SLAVE_CTRL1 8 /* link control to */ static int is_end_of_ht_chain(struct pci_dev *dev) { int pos, ctrl_off; int end = 0; u16 flags, ctrl; pos = pci_find_ht_capability(dev, HT_CAPTYPE_SLAVE); if (!pos) goto out; pci_read_config_word(dev, pos + PCI_CAP_FLAGS, &flags); ctrl_off = ((flags >> 10) & 1) ? PCI_HT_CAP_SLAVE_CTRL0 : PCI_HT_CAP_SLAVE_CTRL1; pci_read_config_word(dev, pos + ctrl_off, &ctrl); if (ctrl & (1 << 6)) end = 1; out: return end; } static void nv_ht_enable_msi_mapping(struct pci_dev *dev) { struct pci_dev *host_bridge; int pos; int i, dev_no; int found = 0; dev_no = dev->devfn >> 3; for (i = dev_no; i >= 0; i--) { host_bridge = pci_get_slot(dev->bus, PCI_DEVFN(i, 0)); if (!host_bridge) continue; pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); if (pos != 0) { found = 1; break; } pci_dev_put(host_bridge); } if (!found) return; /* don't enable end_device/host_bridge with leaf directly here */ if (host_bridge == dev && is_end_of_ht_chain(host_bridge) && host_bridge_with_leaf(host_bridge)) goto out; /* root did that ! */ if (msi_ht_cap_enabled(host_bridge)) goto out; ht_enable_msi_mapping(dev); out: pci_dev_put(host_bridge); } static void ht_disable_msi_mapping(struct pci_dev *dev) { int pos, ttl = PCI_FIND_CAP_TTL; pos = pci_find_ht_capability(dev, HT_CAPTYPE_MSI_MAPPING); while (pos && ttl--) { u8 flags; if (pci_read_config_byte(dev, pos + HT_MSI_FLAGS, &flags) == 0) { pci_info(dev, "Disabling HT MSI Mapping\n"); pci_write_config_byte(dev, pos + HT_MSI_FLAGS, flags & ~HT_MSI_FLAGS_ENABLE); } pos = pci_find_next_ht_capability(dev, pos, HT_CAPTYPE_MSI_MAPPING); } } static void __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all) { struct pci_dev *host_bridge; int pos; int found; if (!pci_msi_enabled()) return; /* check if there is HT MSI cap or enabled on this device */ found = ht_check_msi_mapping(dev); /* no HT MSI CAP */ if (found == 0) return; /* * HT MSI mapping should be disabled on devices that are below * a non-HyperTransport host bridge. Locate the host bridge. */ host_bridge = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), 0, PCI_DEVFN(0, 0)); if (host_bridge == NULL) { pci_warn(dev, "nv_msi_ht_cap_quirk didn't locate host bridge\n"); return; } pos = pci_find_ht_capability(host_bridge, HT_CAPTYPE_SLAVE); if (pos != 0) { /* Host bridge is to HT */ if (found == 1) { /* it is not enabled, try to enable it */ if (all) ht_enable_msi_mapping(dev); else nv_ht_enable_msi_mapping(dev); } goto out; } /* HT MSI is not enabled */ if (found == 1) goto out; /* Host bridge is not to HT, disable HT MSI mapping on this device */ ht_disable_msi_mapping(dev); out: pci_dev_put(host_bridge); } static void nv_msi_ht_cap_quirk_all(struct pci_dev *dev) { return __nv_msi_ht_cap_quirk(dev, 1); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_AL, PCI_ANY_ID, nv_msi_ht_cap_quirk_all); static void nv_msi_ht_cap_quirk_leaf(struct pci_dev *dev) { return __nv_msi_ht_cap_quirk(dev, 0); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, nv_msi_ht_cap_quirk_leaf); static void quirk_msi_intx_disable_bug(struct pci_dev *dev) { dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; } static void quirk_msi_intx_disable_ati_bug(struct pci_dev *dev) { struct pci_dev *p; /* * SB700 MSI issue will be fixed at HW level from revision A21; * we need check PCI REVISION ID of SMBus controller to get SB700 * revision. */ p = pci_get_device(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_SBX00_SMBUS, NULL); if (!p) return; if ((p->revision < 0x3B) && (p->revision >= 0x30)) dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; pci_dev_put(p); } static void quirk_msi_intx_disable_qca_bug(struct pci_dev *dev) { /* AR816X/AR817X/E210X MSI is fixed at HW level from revision 0x18 */ if (dev->revision < 0x18) { pci_info(dev, "set MSI_INTX_DISABLE_BUG flag\n"); dev->dev_flags |= PCI_DEV_FLAGS_MSI_INTX_DISABLE_BUG; } } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5780, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5780S, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5714, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5714S, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5715, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_BROADCOM, PCI_DEVICE_ID_TIGON3_5715S, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4390, quirk_msi_intx_disable_ati_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4391, quirk_msi_intx_disable_ati_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4392, quirk_msi_intx_disable_ati_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4393, quirk_msi_intx_disable_ati_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4394, quirk_msi_intx_disable_ati_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4373, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4374, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x4375, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1062, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1063, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2060, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x2062, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1073, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1083, quirk_msi_intx_disable_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1090, quirk_msi_intx_disable_qca_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x1091, quirk_msi_intx_disable_qca_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a0, quirk_msi_intx_disable_qca_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0x10a1, quirk_msi_intx_disable_qca_bug); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATTANSIC, 0xe091, quirk_msi_intx_disable_qca_bug); /* * Amazon's Annapurna Labs 1c36:0031 Root Ports don't support MSI-X, so it * should be disabled on platforms where the device (mistakenly) advertises it. * * Notice that this quirk also disables MSI (which may work, but hasn't been * tested), since currently there is no standard way to disable only MSI-X. * * The 0031 device id is reused for other non Root Port device types, * therefore the quirk is registered for the PCI_CLASS_BRIDGE_PCI class. */ static void quirk_al_msi_disable(struct pci_dev *dev) { dev->no_msi = 1; pci_warn(dev, "Disabling MSI/MSI-X\n"); } DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, PCI_CLASS_BRIDGE_PCI, 8, quirk_al_msi_disable); #endif /* CONFIG_PCI_MSI */ /* * Allow manual resource allocation for PCI hotplug bridges via * pci=hpmemsize=nnM and pci=hpiosize=nnM parameters. For some PCI-PCI * hotplug bridges, like PLX 6254 (former HINT HB6), kernel fails to * allocate resources when hotplug device is inserted and PCI bus is * rescanned. */ static void quirk_hotplug_bridge(struct pci_dev *dev) { dev->is_hotplug_bridge = 1; } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HINT, 0x0020, quirk_hotplug_bridge); /* * This is a quirk for the Ricoh MMC controller found as a part of some * multifunction chips. * * This is very similar and based on the ricoh_mmc driver written by * Philip Langdale. Thank you for these magic sequences. * * These chips implement the four main memory card controllers (SD, MMC, * MS, xD) and one or both of CardBus or FireWire. * * It happens that they implement SD and MMC support as separate * controllers (and PCI functions). The Linux SDHCI driver supports MMC * cards but the chip detects MMC cards in hardware and directs them to the * MMC controller - so the SDHCI driver never sees them. * * To get around this, we must disable the useless MMC controller. At that * point, the SDHCI controller will start seeing them. It seems to be the * case that the relevant PCI registers to deactivate the MMC controller * live on PCI function 0, which might be the CardBus controller or the * FireWire controller, depending on the particular chip in question * * This has to be done early, because as soon as we disable the MMC controller * other PCI functions shift up one level, e.g. function #2 becomes function * #1, and this will confuse the PCI core. */ #ifdef CONFIG_MMC_RICOH_MMC static void ricoh_mmc_fixup_rl5c476(struct pci_dev *dev) { u8 write_enable; u8 write_target; u8 disable; /* * Disable via CardBus interface * * This must be done via function #0 */ if (PCI_FUNC(dev->devfn)) return; pci_read_config_byte(dev, 0xB7, &disable); if (disable & 0x02) return; pci_read_config_byte(dev, 0x8E, &write_enable); pci_write_config_byte(dev, 0x8E, 0xAA); pci_read_config_byte(dev, 0x8D, &write_target); pci_write_config_byte(dev, 0x8D, 0xB7); pci_write_config_byte(dev, 0xB7, disable | 0x02); pci_write_config_byte(dev, 0x8E, write_enable); pci_write_config_byte(dev, 0x8D, write_target); pci_notice(dev, "proprietary Ricoh MMC controller disabled (via CardBus function)\n"); pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n"); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_RL5C476, ricoh_mmc_fixup_rl5c476); static void ricoh_mmc_fixup_r5c832(struct pci_dev *dev) { u8 write_enable; u8 disable; /* * Disable via FireWire interface * * This must be done via function #0 */ if (PCI_FUNC(dev->devfn)) return; /* * RICOH 0xe822 and 0xe823 SD/MMC card readers fail to recognize * certain types of SD/MMC cards. Lowering the SD base clock * frequency from 200Mhz to 50Mhz fixes this issue. * * 0x150 - SD2.0 mode enable for changing base clock * frequency to 50Mhz * 0xe1 - Base clock frequency * 0x32 - 50Mhz new clock frequency * 0xf9 - Key register for 0x150 * 0xfc - key register for 0xe1 */ if (dev->device == PCI_DEVICE_ID_RICOH_R5CE822 || dev->device == PCI_DEVICE_ID_RICOH_R5CE823) { pci_write_config_byte(dev, 0xf9, 0xfc); pci_write_config_byte(dev, 0x150, 0x10); pci_write_config_byte(dev, 0xf9, 0x00); pci_write_config_byte(dev, 0xfc, 0x01); pci_write_config_byte(dev, 0xe1, 0x32); pci_write_config_byte(dev, 0xfc, 0x00); pci_notice(dev, "MMC controller base frequency changed to 50Mhz.\n"); } pci_read_config_byte(dev, 0xCB, &disable); if (disable & 0x02) return; pci_read_config_byte(dev, 0xCA, &write_enable); pci_write_config_byte(dev, 0xCA, 0x57); pci_write_config_byte(dev, 0xCB, disable | 0x02); pci_write_config_byte(dev, 0xCA, write_enable); pci_notice(dev, "proprietary Ricoh MMC controller disabled (via FireWire function)\n"); pci_notice(dev, "MMC cards are now supported by standard SDHCI controller\n"); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5C832, ricoh_mmc_fixup_r5c832); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE822, ricoh_mmc_fixup_r5c832); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832); DECLARE_PCI_FIXUP_RESUME_EARLY(PCI_VENDOR_ID_RICOH, PCI_DEVICE_ID_RICOH_R5CE823, ricoh_mmc_fixup_r5c832); #endif /*CONFIG_MMC_RICOH_MMC*/ #ifdef CONFIG_DMAR_TABLE #define VTUNCERRMSK_REG 0x1ac #define VTD_MSK_SPEC_ERRORS (1 << 31) /* * This is a quirk for masking VT-d spec-defined errors to platform error * handling logic. Without this, platforms using Intel 7500, 5500 chipsets * (and the derivative chipsets like X58 etc) seem to generate NMI/SMI (based * on the RAS config settings of the platform) when a VT-d fault happens. * The resulting SMI caused the system to hang. * * VT-d spec-related errors are already handled by the VT-d OS code, so no * need to report the same error through other channels. */ static void vtd_mask_spec_errors(struct pci_dev *dev) { u32 word; pci_read_config_dword(dev, VTUNCERRMSK_REG, &word); pci_write_config_dword(dev, VTUNCERRMSK_REG, word | VTD_MSK_SPEC_ERRORS); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x342e, vtd_mask_spec_errors); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x3c28, vtd_mask_spec_errors); #endif static void fixup_ti816x_class(struct pci_dev *dev) { u32 class = dev->class; /* TI 816x devices do not have class code set when in PCIe boot mode */ dev->class = PCI_CLASS_MULTIMEDIA_VIDEO << 8; pci_info(dev, "PCI class overridden (%#08x -> %#08x)\n", class, dev->class); } DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_TI, 0xb800, PCI_CLASS_NOT_DEFINED, 8, fixup_ti816x_class); /* * Some PCIe devices do not work reliably with the claimed maximum * payload size supported. */ static void fixup_mpss_256(struct pci_dev *dev) { dev->pcie_mpss = 1; /* 256 bytes */ } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE, PCI_DEVICE_ID_SOLARFLARE_SFC4000A_0, fixup_mpss_256); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE, PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE, PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ASMEDIA, 0x0612, fixup_mpss_256); /* * Intel 5000 and 5100 Memory controllers have an erratum with read completion * coalescing (which is enabled by default on some BIOSes) and MPS of 256B. * Since there is no way of knowing what the PCIe MPS on each fabric will be * until all of the devices are discovered and buses walked, read completion * coalescing must be disabled. Unfortunately, it cannot be re-enabled because * it is possible to hotplug a device with MPS of 256B. */ static void quirk_intel_mc_errata(struct pci_dev *dev) { int err; u16 rcc; if (pcie_bus_config == PCIE_BUS_TUNE_OFF || pcie_bus_config == PCIE_BUS_DEFAULT) return; /* * Intel erratum specifies bits to change but does not say what * they are. Keeping them magical until such time as the registers * and values can be explained. */ err = pci_read_config_word(dev, 0x48, &rcc); if (err) { pci_err(dev, "Error attempting to read the read completion coalescing register\n"); return; } if (!(rcc & (1 << 10))) return; rcc &= ~(1 << 10); err = pci_write_config_word(dev, 0x48, rcc); if (err) { pci_err(dev, "Error attempting to write the read completion coalescing register\n"); return; } pr_info_once("Read completion coalescing disabled due to hardware erratum relating to 256B MPS\n"); } /* Intel 5000 series memory controllers and ports 2-7 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25c0, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d0, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d4, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25d8, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e2, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e3, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e4, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e5, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e6, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25e7, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f7, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f8, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25f9, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x25fa, quirk_intel_mc_errata); /* Intel 5100 series memory controllers and ports 2-7 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65c0, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e2, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e3, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e4, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e5, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e6, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65e7, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f7, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f8, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65f9, quirk_intel_mc_errata); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x65fa, quirk_intel_mc_errata); /* * Ivytown NTB BAR sizes are misreported by the hardware due to an erratum. * To work around this, query the size it should be configured to by the * device and modify the resource end to correspond to this new size. */ static void quirk_intel_ntb(struct pci_dev *dev) { int rc; u8 val; rc = pci_read_config_byte(dev, 0x00D0, &val); if (rc) return; dev->resource[2].end = dev->resource[2].start + ((u64) 1 << val) - 1; rc = pci_read_config_byte(dev, 0x00D1, &val); if (rc) return; dev->resource[4].end = dev->resource[4].start + ((u64) 1 << val) - 1; } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e08, quirk_intel_ntb); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x0e0d, quirk_intel_ntb); /* * Some BIOS implementations leave the Intel GPU interrupts enabled, even * though no one is handling them (e.g., if the i915 driver is never * loaded). Additionally the interrupt destination is not set up properly * and the interrupt ends up -somewhere-. * * These spurious interrupts are "sticky" and the kernel disables the * (shared) interrupt line after 100,000+ generated interrupts. * * Fix it by disabling the still enabled interrupts. This resolves crashes * often seen on monitor unplug. */ #define I915_DEIER_REG 0x4400c static void disable_igfx_irq(struct pci_dev *dev) { void __iomem *regs = pci_iomap(dev, 0, 0); if (regs == NULL) { pci_warn(dev, "igfx quirk: Can't iomap PCI device\n"); return; } /* Check if any interrupt line is still enabled */ if (readl(regs + I915_DEIER_REG) != 0) { pci_warn(dev, "BIOS left Intel GPU interrupts enabled; disabling\n"); writel(0, regs + I915_DEIER_REG); } pci_iounmap(dev, regs); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0042, disable_igfx_irq); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0046, disable_igfx_irq); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x004a, disable_igfx_irq); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0102, disable_igfx_irq); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0106, disable_igfx_irq); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x010a, disable_igfx_irq); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0152, disable_igfx_irq); /* * PCI devices which are on Intel chips can skip the 10ms delay * before entering D3 mode. */ static void quirk_remove_d3hot_delay(struct pci_dev *dev) { dev->d3hot_delay = 0; } /* C600 Series devices do not need 10ms d3hot_delay */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0412, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c00, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x0c0c, quirk_remove_d3hot_delay); /* Lynxpoint-H PCH devices do not need 10ms d3hot_delay */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c02, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c18, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c1c, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c20, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c22, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c26, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c2d, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c31, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3a, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c3d, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x8c4e, quirk_remove_d3hot_delay); /* Intel Cherrytrail devices do not need 10ms d3hot_delay */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2280, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x2298, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x229c, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b0, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b5, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b7, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22b8, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22d8, quirk_remove_d3hot_delay); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x22dc, quirk_remove_d3hot_delay); /* * Some devices may pass our check in pci_intx_mask_supported() if * PCI_COMMAND_INTX_DISABLE works though they actually do not properly * support this feature. */ static void quirk_broken_intx_masking(struct pci_dev *dev) { dev->broken_intx_masking = 1; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_CHELSIO, 0x0030, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(0x1814, 0x0601, /* Ralink RT2800 802.11n PCI */ quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(0x1b7c, 0x0004, /* Ceton InfiniTV4 */ quirk_broken_intx_masking); /* * Realtek RTL8169 PCI Gigabit Ethernet Controller (rev 10) * Subsystem: Realtek RTL8169/8110 Family PCI Gigabit Ethernet NIC * * RTL8110SC - Fails under PCI device assignment using DisINTx masking. */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, 0x8169, quirk_broken_intx_masking); /* * Intel i40e (XL710/X710) 10/20/40GbE NICs all have broken INTx masking, * DisINTx can be set but the interrupt status bit is non-functional. */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1572, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1574, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1580, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1581, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1583, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1584, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1585, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1586, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1587, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1588, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1589, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158a, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x158b, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d0, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d1, quirk_broken_intx_masking); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x37d2, quirk_broken_intx_masking); static u16 mellanox_broken_intx_devs[] = { PCI_DEVICE_ID_MELLANOX_HERMON_SDR, PCI_DEVICE_ID_MELLANOX_HERMON_DDR, PCI_DEVICE_ID_MELLANOX_HERMON_QDR, PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2, PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2, PCI_DEVICE_ID_MELLANOX_HERMON_EN, PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2, PCI_DEVICE_ID_MELLANOX_CONNECTX_EN, PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2, PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2, PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2, PCI_DEVICE_ID_MELLANOX_CONNECTX2, PCI_DEVICE_ID_MELLANOX_CONNECTX3, PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO, }; #define CONNECTX_4_CURR_MAX_MINOR 99 #define CONNECTX_4_INTX_SUPPORT_MINOR 14 /* * Check ConnectX-4/LX FW version to see if it supports legacy interrupts. * If so, don't mark it as broken. * FW minor > 99 means older FW version format and no INTx masking support. * FW minor < 14 means new FW version format and no INTx masking support. */ static void mellanox_check_broken_intx_masking(struct pci_dev *pdev) { __be32 __iomem *fw_ver; u16 fw_major; u16 fw_minor; u16 fw_subminor; u32 fw_maj_min; u32 fw_sub_min; int i; for (i = 0; i < ARRAY_SIZE(mellanox_broken_intx_devs); i++) { if (pdev->device == mellanox_broken_intx_devs[i]) { pdev->broken_intx_masking = 1; return; } } /* * Getting here means Connect-IB cards and up. Connect-IB has no INTx * support so shouldn't be checked further */ if (pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTIB) return; if (pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4 && pdev->device != PCI_DEVICE_ID_MELLANOX_CONNECTX4_LX) return; /* For ConnectX-4 and ConnectX-4LX, need to check FW support */ if (pci_enable_device_mem(pdev)) { pci_warn(pdev, "Can't enable device memory\n"); return; } fw_ver = ioremap(pci_resource_start(pdev, 0), 4); if (!fw_ver) { pci_warn(pdev, "Can't map ConnectX-4 initialization segment\n"); goto out; } /* Reading from resource space should be 32b aligned */ fw_maj_min = ioread32be(fw_ver); fw_sub_min = ioread32be(fw_ver + 1); fw_major = fw_maj_min & 0xffff; fw_minor = fw_maj_min >> 16; fw_subminor = fw_sub_min & 0xffff; if (fw_minor > CONNECTX_4_CURR_MAX_MINOR || fw_minor < CONNECTX_4_INTX_SUPPORT_MINOR) { pci_warn(pdev, "ConnectX-4: FW %u.%u.%u doesn't support INTx masking, disabling. Please upgrade FW to %d.14.1100 and up for INTx support\n", fw_major, fw_minor, fw_subminor, pdev->device == PCI_DEVICE_ID_MELLANOX_CONNECTX4 ? 12 : 14); pdev->broken_intx_masking = 1; } iounmap(fw_ver); out: pci_disable_device(pdev); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_MELLANOX, PCI_ANY_ID, mellanox_check_broken_intx_masking); static void quirk_no_bus_reset(struct pci_dev *dev) { dev->dev_flags |= PCI_DEV_FLAGS_NO_BUS_RESET; } /* * Some NVIDIA GPU devices do not work with bus reset, SBR needs to be * prevented for those affected devices. */ static void quirk_nvidia_no_bus_reset(struct pci_dev *dev) { if ((dev->device & 0xffc0) == 0x2340) quirk_no_bus_reset(dev); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, quirk_nvidia_no_bus_reset); /* * Some Atheros AR9xxx and QCA988x chips do not behave after a bus reset. * The device will throw a Link Down error on AER-capable systems and * regardless of AER, config space of the device is never accessible again * and typically causes the system to hang or reset when access is attempted. * https://lore.kernel.org/r/20140923210318.498dacbd@dualc.maya.org/ */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0030, quirk_no_bus_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0032, quirk_no_bus_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003c, quirk_no_bus_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0033, quirk_no_bus_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x0034, quirk_no_bus_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATHEROS, 0x003e, quirk_no_bus_reset); /* * Root port on some Cavium CN8xxx chips do not successfully complete a bus * reset when used with certain child devices. After the reset, config * accesses to the child may fail. */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CAVIUM, 0xa100, quirk_no_bus_reset); /* * Some TI KeyStone C667X devices do not support bus/hot reset. The PCIESS * automatically disables LTSSM when Secondary Bus Reset is received and * the device stops working. Prevent bus reset for these devices. With * this change, the device can be assigned to VMs with VFIO, but it will * leak state between VMs. Reference * https://e2e.ti.com/support/processors/f/791/t/954382 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TI, 0xb005, quirk_no_bus_reset); static void quirk_no_pm_reset(struct pci_dev *dev) { /* * We can't do a bus reset on root bus devices, but an ineffective * PM reset may be better than nothing. */ if (!pci_is_root_bus(dev->bus)) dev->dev_flags |= PCI_DEV_FLAGS_NO_PM_RESET; } /* * Some AMD/ATI GPUS (HD8570 - Oland) report that a D3hot->D0 transition * causes a reset (i.e., they advertise NoSoftRst-). This transition seems * to have no effect on the device: it retains the framebuffer contents and * monitor sync. Advertising this support makes other layers, like VFIO, * assume pci_reset_function() is viable for this device. Mark it as * unavailable to skip it when testing reset methods. */ DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_ATI, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA, 8, quirk_no_pm_reset); /* * Spectrum-{1,2,3,4} devices report that a D3hot->D0 transition causes a reset * (i.e., they advertise NoSoftRst-). However, this transition does not have * any effect on the device: It continues to be operational and network ports * remain up. Advertising this support makes it seem as if a PM reset is viable * for these devices. Mark it as unavailable to skip it when testing reset * methods. */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcb84, quirk_no_pm_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf6c, quirk_no_pm_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf70, quirk_no_pm_reset); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MELLANOX, 0xcf80, quirk_no_pm_reset); /* * Thunderbolt controllers with broken MSI hotplug signaling: * Entire 1st generation (Light Ridge, Eagle Ridge, Light Peak) and part * of the 2nd generation (Cactus Ridge 4C up to revision 1, Port Ridge). */ static void quirk_thunderbolt_hotplug_msi(struct pci_dev *pdev) { if (pdev->is_hotplug_bridge && (pdev->device != PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C || pdev->revision <= 1)) pdev->no_msi = 1; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE, quirk_thunderbolt_hotplug_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE, quirk_thunderbolt_hotplug_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK, quirk_thunderbolt_hotplug_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C, quirk_thunderbolt_hotplug_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE, quirk_thunderbolt_hotplug_msi); #ifdef CONFIG_ACPI /* * Apple: Shutdown Cactus Ridge Thunderbolt controller. * * On Apple hardware the Cactus Ridge Thunderbolt controller needs to be * shutdown before suspend. Otherwise the native host interface (NHI) will not * be present after resume if a device was plugged in before suspend. * * The Thunderbolt controller consists of a PCIe switch with downstream * bridges leading to the NHI and to the tunnel PCI bridges. * * This quirk cuts power to the whole chip. Therefore we have to apply it * during suspend_noirq of the upstream bridge. * * Power is automagically restored before resume. No action is needed. */ static void quirk_apple_poweroff_thunderbolt(struct pci_dev *dev) { acpi_handle bridge, SXIO, SXFP, SXLV; if (!x86_apple_machine) return; if (pci_pcie_type(dev) != PCI_EXP_TYPE_UPSTREAM) return; /* * SXIO/SXFP/SXLF turns off power to the Thunderbolt controller. * We don't know how to turn it back on again, but firmware does, * so we can only use SXIO/SXFP/SXLF if we're suspending via * firmware. */ if (!pm_suspend_via_firmware()) return; bridge = ACPI_HANDLE(&dev->dev); if (!bridge) return; /* * SXIO and SXLV are present only on machines requiring this quirk. * Thunderbolt bridges in external devices might have the same * device ID as those on the host, but they will not have the * associated ACPI methods. This implicitly checks that we are at * the right bridge. */ if (ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXIO", &SXIO)) || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXFP", &SXFP)) || ACPI_FAILURE(acpi_get_handle(bridge, "DSB0.NHI0.SXLV", &SXLV))) return; pci_info(dev, "quirk: cutting power to Thunderbolt controller...\n"); /* magic sequence */ acpi_execute_simple_method(SXIO, NULL, 1); acpi_execute_simple_method(SXFP, NULL, 0); msleep(300); acpi_execute_simple_method(SXLV, NULL, 0); acpi_execute_simple_method(SXIO, NULL, 0); acpi_execute_simple_method(SXLV, NULL, 0); } DECLARE_PCI_FIXUP_SUSPEND_LATE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C, quirk_apple_poweroff_thunderbolt); #endif /* * Following are device-specific reset methods which can be used to * reset a single function if other methods (e.g. FLR, PM D0->D3) are * not available. */ static int reset_intel_82599_sfp_virtfn(struct pci_dev *dev, bool probe) { /* * http://www.intel.com/content/dam/doc/datasheet/82599-10-gbe-controller-datasheet.pdf * * The 82599 supports FLR on VFs, but FLR support is reported only * in the PF DEVCAP (sec 9.3.10.4), not in the VF DEVCAP (sec 9.5). * Thus we must call pcie_flr() directly without first checking if it is * supported. */ if (!probe) pcie_flr(dev); return 0; } #define SOUTH_CHICKEN2 0xc2004 #define PCH_PP_STATUS 0xc7200 #define PCH_PP_CONTROL 0xc7204 #define MSG_CTL 0x45010 #define NSDE_PWR_STATE 0xd0100 #define IGD_OPERATION_TIMEOUT 10000 /* set timeout 10 seconds */ static int reset_ivb_igd(struct pci_dev *dev, bool probe) { void __iomem *mmio_base; unsigned long timeout; u32 val; if (probe) return 0; mmio_base = pci_iomap(dev, 0, 0); if (!mmio_base) return -ENOMEM; iowrite32(0x00000002, mmio_base + MSG_CTL); /* * Clobbering SOUTH_CHICKEN2 register is fine only if the next * driver loaded sets the right bits. However, this's a reset and * the bits have been set by i915 previously, so we clobber * SOUTH_CHICKEN2 register directly here. */ iowrite32(0x00000005, mmio_base + SOUTH_CHICKEN2); val = ioread32(mmio_base + PCH_PP_CONTROL) & 0xfffffffe; iowrite32(val, mmio_base + PCH_PP_CONTROL); timeout = jiffies + msecs_to_jiffies(IGD_OPERATION_TIMEOUT); do { val = ioread32(mmio_base + PCH_PP_STATUS); if ((val & 0xb0000000) == 0) goto reset_complete; msleep(10); } while (time_before(jiffies, timeout)); pci_warn(dev, "timeout during reset\n"); reset_complete: iowrite32(0x00000002, mmio_base + NSDE_PWR_STATE); pci_iounmap(dev, mmio_base); return 0; } /* Device-specific reset method for Chelsio T4-based adapters */ static int reset_chelsio_generic_dev(struct pci_dev *dev, bool probe) { u16 old_command; u16 msix_flags; /* * If this isn't a Chelsio T4-based device, return -ENOTTY indicating * that we have no device-specific reset method. */ if ((dev->device & 0xf000) != 0x4000) return -ENOTTY; /* * If this is the "probe" phase, return 0 indicating that we can * reset this device. */ if (probe) return 0; /* * T4 can wedge if there are DMAs in flight within the chip and Bus * Master has been disabled. We need to have it on till the Function * Level Reset completes. (BUS_MASTER is disabled in * pci_reset_function()). */ pci_read_config_word(dev, PCI_COMMAND, &old_command); pci_write_config_word(dev, PCI_COMMAND, old_command | PCI_COMMAND_MASTER); /* * Perform the actual device function reset, saving and restoring * configuration information around the reset. */ pci_save_state(dev); /* * T4 also suffers a Head-Of-Line blocking problem if MSI-X interrupts * are disabled when an MSI-X interrupt message needs to be delivered. * So we briefly re-enable MSI-X interrupts for the duration of the * FLR. The pci_restore_state() below will restore the original * MSI-X state. */ pci_read_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, &msix_flags); if ((msix_flags & PCI_MSIX_FLAGS_ENABLE) == 0) pci_write_config_word(dev, dev->msix_cap+PCI_MSIX_FLAGS, msix_flags | PCI_MSIX_FLAGS_ENABLE | PCI_MSIX_FLAGS_MASKALL); pcie_flr(dev); /* * Restore the configuration information (BAR values, etc.) including * the original PCI Configuration Space Command word, and return * success. */ pci_restore_state(dev); pci_write_config_word(dev, PCI_COMMAND, old_command); return 0; } #define PCI_DEVICE_ID_INTEL_82599_SFP_VF 0x10ed #define PCI_DEVICE_ID_INTEL_IVB_M_VGA 0x0156 #define PCI_DEVICE_ID_INTEL_IVB_M2_VGA 0x0166 /* * The Samsung SM961/PM961 controller can sometimes enter a fatal state after * FLR where config space reads from the device return -1. We seem to be * able to avoid this condition if we disable the NVMe controller prior to * FLR. This quirk is generic for any NVMe class device requiring similar * assistance to quiesce the device prior to FLR. * * NVMe specification: https://nvmexpress.org/resources/specifications/ * Revision 1.0e: * Chapter 2: Required and optional PCI config registers * Chapter 3: NVMe control registers * Chapter 7.3: Reset behavior */ static int nvme_disable_and_flr(struct pci_dev *dev, bool probe) { void __iomem *bar; u16 cmd; u32 cfg; if (dev->class != PCI_CLASS_STORAGE_EXPRESS || pcie_reset_flr(dev, PCI_RESET_PROBE) || !pci_resource_start(dev, 0)) return -ENOTTY; if (probe) return 0; bar = pci_iomap(dev, 0, NVME_REG_CC + sizeof(cfg)); if (!bar) return -ENOTTY; pci_read_config_word(dev, PCI_COMMAND, &cmd); pci_write_config_word(dev, PCI_COMMAND, cmd | PCI_COMMAND_MEMORY); cfg = readl(bar + NVME_REG_CC); /* Disable controller if enabled */ if (cfg & NVME_CC_ENABLE) { u32 cap = readl(bar + NVME_REG_CAP); unsigned long timeout; /* * Per nvme_disable_ctrl() skip shutdown notification as it * could complete commands to the admin queue. We only intend * to quiesce the device before reset. */ cfg &= ~(NVME_CC_SHN_MASK | NVME_CC_ENABLE); writel(cfg, bar + NVME_REG_CC); /* * Some controllers require an additional delay here, see * NVME_QUIRK_DELAY_BEFORE_CHK_RDY. None of those are yet * supported by this quirk. */ /* Cap register provides max timeout in 500ms increments */ timeout = ((NVME_CAP_TIMEOUT(cap) + 1) * HZ / 2) + jiffies; for (;;) { u32 status = readl(bar + NVME_REG_CSTS); /* Ready status becomes zero on disable complete */ if (!(status & NVME_CSTS_RDY)) break; msleep(100); if (time_after(jiffies, timeout)) { pci_warn(dev, "Timeout waiting for NVMe ready status to clear after disable\n"); break; } } } pci_iounmap(dev, bar); pcie_flr(dev); return 0; } /* * Some NVMe controllers such as Intel DC P3700 and Solidigm P44 Pro will * timeout waiting for ready status to change after NVMe enable if the driver * starts interacting with the device too soon after FLR. A 250ms delay after * FLR has heuristically proven to produce reliably working results for device * assignment cases. */ static int delay_250ms_after_flr(struct pci_dev *dev, bool probe) { if (probe) return pcie_reset_flr(dev, PCI_RESET_PROBE); pcie_reset_flr(dev, PCI_RESET_DO_RESET); msleep(250); return 0; } #define PCI_DEVICE_ID_HINIC_VF 0x375E #define HINIC_VF_FLR_TYPE 0x1000 #define HINIC_VF_FLR_CAP_BIT (1UL << 30) #define HINIC_VF_OP 0xE80 #define HINIC_VF_FLR_PROC_BIT (1UL << 18) #define HINIC_OPERATION_TIMEOUT 15000 /* 15 seconds */ /* Device-specific reset method for Huawei Intelligent NIC virtual functions */ static int reset_hinic_vf_dev(struct pci_dev *pdev, bool probe) { unsigned long timeout; void __iomem *bar; u32 val; if (probe) return 0; bar = pci_iomap(pdev, 0, 0); if (!bar) return -ENOTTY; /* Get and check firmware capabilities */ val = ioread32be(bar + HINIC_VF_FLR_TYPE); if (!(val & HINIC_VF_FLR_CAP_BIT)) { pci_iounmap(pdev, bar); return -ENOTTY; } /* Set HINIC_VF_FLR_PROC_BIT for the start of FLR */ val = ioread32be(bar + HINIC_VF_OP); val = val | HINIC_VF_FLR_PROC_BIT; iowrite32be(val, bar + HINIC_VF_OP); pcie_flr(pdev); /* * The device must recapture its Bus and Device Numbers after FLR * in order generate Completions. Issue a config write to let the * device capture this information. */ pci_write_config_word(pdev, PCI_VENDOR_ID, 0); /* Firmware clears HINIC_VF_FLR_PROC_BIT when reset is complete */ timeout = jiffies + msecs_to_jiffies(HINIC_OPERATION_TIMEOUT); do { val = ioread32be(bar + HINIC_VF_OP); if (!(val & HINIC_VF_FLR_PROC_BIT)) goto reset_complete; msleep(20); } while (time_before(jiffies, timeout)); val = ioread32be(bar + HINIC_VF_OP); if (!(val & HINIC_VF_FLR_PROC_BIT)) goto reset_complete; pci_warn(pdev, "Reset dev timeout, FLR ack reg: %#010x\n", val); reset_complete: pci_iounmap(pdev, bar); return 0; } static const struct pci_dev_reset_methods pci_dev_reset_methods[] = { { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82599_SFP_VF, reset_intel_82599_sfp_virtfn }, { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M_VGA, reset_ivb_igd }, { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_IVB_M2_VGA, reset_ivb_igd }, { PCI_VENDOR_ID_SAMSUNG, 0xa804, nvme_disable_and_flr }, { PCI_VENDOR_ID_INTEL, 0x0953, delay_250ms_after_flr }, { PCI_VENDOR_ID_INTEL, 0x0a54, delay_250ms_after_flr }, { PCI_VENDOR_ID_SOLIDIGM, 0xf1ac, delay_250ms_after_flr }, { PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID, reset_chelsio_generic_dev }, { PCI_VENDOR_ID_HUAWEI, PCI_DEVICE_ID_HINIC_VF, reset_hinic_vf_dev }, { 0 } }; /* * These device-specific reset methods are here rather than in a driver * because when a host assigns a device to a guest VM, the host may need * to reset the device but probably doesn't have a driver for it. */ int pci_dev_specific_reset(struct pci_dev *dev, bool probe) { const struct pci_dev_reset_methods *i; for (i = pci_dev_reset_methods; i->reset; i++) { if ((i->vendor == dev->vendor || i->vendor == (u16)PCI_ANY_ID) && (i->device == dev->device || i->device == (u16)PCI_ANY_ID)) return i->reset(dev, probe); } return -ENOTTY; } static void quirk_dma_func0_alias(struct pci_dev *dev) { if (PCI_FUNC(dev->devfn) != 0) pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 0), 1); } /* * https://bugzilla.redhat.com/show_bug.cgi?id=605888 * * Some Ricoh devices use function 0 as the PCIe requester ID for DMA. */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe832, quirk_dma_func0_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_RICOH, 0xe476, quirk_dma_func0_alias); static void quirk_dma_func1_alias(struct pci_dev *dev) { if (PCI_FUNC(dev->devfn) != 1) pci_add_dma_alias(dev, PCI_DEVFN(PCI_SLOT(dev->devfn), 1), 1); } /* * Marvell 88SE9123 uses function 1 as the requester ID for DMA. In some * SKUs function 1 is present and is a legacy IDE controller, in other * SKUs this function is not present, making this a ghost requester. * https://bugzilla.kernel.org/show_bug.cgi?id=42679 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120, quirk_dma_func1_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125, quirk_dma_func1_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9130, quirk_dma_func1_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9170, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c47 + c57 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9172, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c59 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x917a, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c78 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9182, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c134 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9183, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c46 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x91a0, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c135 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9215, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c127 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9220, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c49 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9230, quirk_dma_func1_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9235, quirk_dma_func1_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0642, quirk_dma_func1_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_TTI, 0x0645, quirk_dma_func1_alias); /* https://bugs.gentoo.org/show_bug.cgi?id=497630 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_JMICRON, PCI_DEVICE_ID_JMICRON_JMB388_ESD, quirk_dma_func1_alias); /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c117 */ DECLARE_PCI_FIXUP_HEADER(0x1c28, /* Lite-On */ 0x0122, /* Plextor M6E (Marvell 88SS9183)*/ quirk_dma_func1_alias); /* * Some devices DMA with the wrong devfn, not just the wrong function. * quirk_fixed_dma_alias() uses this table to create fixed aliases, where * the alias is "fixed" and independent of the device devfn. * * For example, the Adaptec 3405 is a PCIe card with an Intel 80333 I/O * processor. To software, this appears as a PCIe-to-PCI/X bridge with a * single device on the secondary bus. In reality, the single exposed * device at 0e.0 is the Address Translation Unit (ATU) of the controller * that provides a bridge to the internal bus of the I/O processor. The * controller supports private devices, which can be hidden from PCI config * space. In the case of the Adaptec 3405, a private device at 01.0 * appears to be the DMA engine, which therefore needs to become a DMA * alias for the device. */ static const struct pci_device_id fixed_dma_alias_tbl[] = { { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285, PCI_VENDOR_ID_ADAPTEC2, 0x02bb), /* Adaptec 3405 */ .driver_data = PCI_DEVFN(1, 0) }, { PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x0285, PCI_VENDOR_ID_ADAPTEC2, 0x02bc), /* Adaptec 3805 */ .driver_data = PCI_DEVFN(1, 0) }, { 0 } }; static void quirk_fixed_dma_alias(struct pci_dev *dev) { const struct pci_device_id *id; id = pci_match_id(fixed_dma_alias_tbl, dev); if (id) pci_add_dma_alias(dev, id->driver_data, 1); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADAPTEC2, 0x0285, quirk_fixed_dma_alias); /* * A few PCIe-to-PCI bridges fail to expose a PCIe capability, resulting in * using the wrong DMA alias for the device. Some of these devices can be * used as either forward or reverse bridges, so we need to test whether the * device is operating in the correct mode. We could probably apply this * quirk to PCI_ANY_ID, but for now we'll just use known offenders. The test * is for a non-root, non-PCIe bridge where the upstream device is PCIe and * is not a PCIe-to-PCI bridge, then @pdev is actually a PCIe-to-PCI bridge. */ static void quirk_use_pcie_bridge_dma_alias(struct pci_dev *pdev) { if (!pci_is_root_bus(pdev->bus) && pdev->hdr_type == PCI_HEADER_TYPE_BRIDGE && !pci_is_pcie(pdev) && pci_is_pcie(pdev->bus->self) && pci_pcie_type(pdev->bus->self) != PCI_EXP_TYPE_PCI_BRIDGE) pdev->dev_flags |= PCI_DEV_FLAG_PCIE_BRIDGE_ALIAS; } /* ASM1083/1085, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c46 */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_use_pcie_bridge_dma_alias); /* Tundra 8113, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c43 */ DECLARE_PCI_FIXUP_HEADER(0x10e3, 0x8113, quirk_use_pcie_bridge_dma_alias); /* ITE 8892, https://bugzilla.kernel.org/show_bug.cgi?id=73551 */ DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8892, quirk_use_pcie_bridge_dma_alias); /* ITE 8893 has the same problem as the 8892 */ DECLARE_PCI_FIXUP_HEADER(0x1283, 0x8893, quirk_use_pcie_bridge_dma_alias); /* Intel 82801, https://bugzilla.kernel.org/show_bug.cgi?id=44881#c49 */ DECLARE_PCI_FIXUP_HEADER(0x8086, 0x244e, quirk_use_pcie_bridge_dma_alias); /* * MIC x200 NTB forwards PCIe traffic using multiple alien RIDs. They have to * be added as aliases to the DMA device in order to allow buffer access * when IOMMU is enabled. Following devfns have to match RIT-LUT table * programmed in the EEPROM. */ static void quirk_mic_x200_dma_alias(struct pci_dev *pdev) { pci_add_dma_alias(pdev, PCI_DEVFN(0x10, 0x0), 1); pci_add_dma_alias(pdev, PCI_DEVFN(0x11, 0x0), 1); pci_add_dma_alias(pdev, PCI_DEVFN(0x12, 0x3), 1); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2260, quirk_mic_x200_dma_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2264, quirk_mic_x200_dma_alias); /* * Intel Visual Compute Accelerator (VCA) is a family of PCIe add-in devices * exposing computational units via Non Transparent Bridges (NTB, PEX 87xx). * * Similarly to MIC x200, we need to add DMA aliases to allow buffer access * when IOMMU is enabled. These aliases allow computational unit access to * host memory. These aliases mark the whole VCA device as one IOMMU * group. * * All possible slot numbers (0x20) are used, since we are unable to tell * what slot is used on other side. This quirk is intended for both host * and computational unit sides. The VCA devices have up to five functions * (four for DMA channels and one additional). */ static void quirk_pex_vca_alias(struct pci_dev *pdev) { const unsigned int num_pci_slots = 0x20; unsigned int slot; for (slot = 0; slot < num_pci_slots; slot++) pci_add_dma_alias(pdev, PCI_DEVFN(slot, 0x0), 5); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2954, quirk_pex_vca_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2955, quirk_pex_vca_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2956, quirk_pex_vca_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2958, quirk_pex_vca_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2959, quirk_pex_vca_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x295A, quirk_pex_vca_alias); /* * The IOMMU and interrupt controller on Broadcom Vulcan/Cavium ThunderX2 are * associated not at the root bus, but at a bridge below. This quirk avoids * generating invalid DMA aliases. */ static void quirk_bridge_cavm_thrx2_pcie_root(struct pci_dev *pdev) { pdev->dev_flags |= PCI_DEV_FLAGS_BRIDGE_XLATE_ROOT; } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9000, quirk_bridge_cavm_thrx2_pcie_root); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_BROADCOM, 0x9084, quirk_bridge_cavm_thrx2_pcie_root); /* * Intersil/Techwell TW686[4589]-based video capture cards have an empty (zero) * class code. Fix it. */ static void quirk_tw686x_class(struct pci_dev *pdev) { u32 class = pdev->class; /* Use "Multimedia controller" class */ pdev->class = (PCI_CLASS_MULTIMEDIA_OTHER << 8) | 0x01; pci_info(pdev, "TW686x PCI class overridden (%#08x -> %#08x)\n", class, pdev->class); } DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6864, PCI_CLASS_NOT_DEFINED, 8, quirk_tw686x_class); DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6865, PCI_CLASS_NOT_DEFINED, 8, quirk_tw686x_class); DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6868, PCI_CLASS_NOT_DEFINED, 8, quirk_tw686x_class); DECLARE_PCI_FIXUP_CLASS_EARLY(0x1797, 0x6869, PCI_CLASS_NOT_DEFINED, 8, quirk_tw686x_class); /* * Some devices have problems with Transaction Layer Packets with the Relaxed * Ordering Attribute set. Such devices should mark themselves and other * device drivers should check before sending TLPs with RO set. */ static void quirk_relaxedordering_disable(struct pci_dev *dev) { dev->dev_flags |= PCI_DEV_FLAGS_NO_RELAXED_ORDERING; pci_info(dev, "Disable Relaxed Ordering Attributes to avoid PCIe Completion erratum\n"); } /* * Intel Xeon processors based on Broadwell/Haswell microarchitecture Root * Complex have a Flow Control Credit issue which can cause performance * problems with Upstream Transaction Layer Packets with Relaxed Ordering set. */ DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f01, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f02, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f03, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f04, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f05, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f06, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f07, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f08, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f09, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0a, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0b, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0c, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0d, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x6f0e, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f01, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f02, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f03, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f04, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f05, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f06, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f07, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f08, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f09, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0a, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0b, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0c, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0d, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_INTEL, 0x2f0e, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); /* * The AMD ARM A1100 (aka "SEATTLE") SoC has a bug in its PCIe Root Complex * where Upstream Transaction Layer Packets with the Relaxed Ordering * Attribute clear are allowed to bypass earlier TLPs with Relaxed Ordering * set. This is a violation of the PCIe 3.0 Transaction Ordering Rules * outlined in Section 2.4.1 (PCI Express(r) Base Specification Revision 3.0 * November 10, 2010). As a result, on this platform we can't use Relaxed * Ordering for Upstream TLPs. */ DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a00, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a01, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); DECLARE_PCI_FIXUP_CLASS_EARLY(PCI_VENDOR_ID_AMD, 0x1a02, PCI_CLASS_NOT_DEFINED, 8, quirk_relaxedordering_disable); /* * Per PCIe r3.0, sec 2.2.9, "Completion headers must supply the same * values for the Attribute as were supplied in the header of the * corresponding Request, except as explicitly allowed when IDO is used." * * If a non-compliant device generates a completion with a different * attribute than the request, the receiver may accept it (which itself * seems non-compliant based on sec 2.3.2), or it may handle it as a * Malformed TLP or an Unexpected Completion, which will probably lead to a * device access timeout. * * If the non-compliant device generates completions with zero attributes * (instead of copying the attributes from the request), we can work around * this by disabling the "Relaxed Ordering" and "No Snoop" attributes in * upstream devices so they always generate requests with zero attributes. * * This affects other devices under the same Root Port, but since these * attributes are performance hints, there should be no functional problem. * * Note that Configuration Space accesses are never supposed to have TLP * Attributes, so we're safe waiting till after any Configuration Space * accesses to do the Root Port fixup. */ static void quirk_disable_root_port_attributes(struct pci_dev *pdev) { struct pci_dev *root_port = pcie_find_root_port(pdev); if (!root_port) { pci_warn(pdev, "PCIe Completion erratum may cause device errors\n"); return; } pci_info(root_port, "Disabling No Snoop/Relaxed Ordering Attributes to avoid PCIe Completion erratum in %s\n", dev_name(&pdev->dev)); pcie_capability_clear_word(root_port, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_RELAX_EN | PCI_EXP_DEVCTL_NOSNOOP_EN); } /* * The Chelsio T5 chip fails to copy TLP Attributes from a Request to the * Completion it generates. */ static void quirk_chelsio_T5_disable_root_port_attributes(struct pci_dev *pdev) { /* * This mask/compare operation selects for Physical Function 4 on a * T5. We only need to fix up the Root Port once for any of the * PFs. PF[0..3] have PCI Device IDs of 0x50xx, but PF4 is uniquely * 0x54xx so we use that one. */ if ((pdev->device & 0xff00) == 0x5400) quirk_disable_root_port_attributes(pdev); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_CHELSIO, PCI_ANY_ID, quirk_chelsio_T5_disable_root_port_attributes); /* * pci_acs_ctrl_enabled - compare desired ACS controls with those provided * by a device * @acs_ctrl_req: Bitmask of desired ACS controls * @acs_ctrl_ena: Bitmask of ACS controls enabled or provided implicitly by * the hardware design * * Return 1 if all ACS controls in the @acs_ctrl_req bitmask are included * in @acs_ctrl_ena, i.e., the device provides all the access controls the * caller desires. Return 0 otherwise. */ static int pci_acs_ctrl_enabled(u16 acs_ctrl_req, u16 acs_ctrl_ena) { if ((acs_ctrl_req & acs_ctrl_ena) == acs_ctrl_req) return 1; return 0; } /* * AMD has indicated that the devices below do not support peer-to-peer * in any system where they are found in the southbridge with an AMD * IOMMU in the system. Multifunction devices that do not support * peer-to-peer between functions can claim to support a subset of ACS. * Such devices effectively enable request redirect (RR) and completion * redirect (CR) since all transactions are redirected to the upstream * root complex. * * https://lore.kernel.org/r/201207111426.q6BEQTbh002928@mail.maya.org/ * https://lore.kernel.org/r/20120711165854.GM25282@amd.com/ * https://lore.kernel.org/r/20121005130857.GX4009@amd.com/ * * 1002:4385 SBx00 SMBus Controller * 1002:439c SB7x0/SB8x0/SB9x0 IDE Controller * 1002:4383 SBx00 Azalia (Intel HDA) * 1002:439d SB7x0/SB8x0/SB9x0 LPC host controller * 1002:4384 SBx00 PCI to PCI Bridge * 1002:4399 SB7x0/SB8x0/SB9x0 USB OHCI2 Controller * * https://bugzilla.kernel.org/show_bug.cgi?id=81841#c15 * * 1022:780f [AMD] FCH PCI Bridge * 1022:7809 [AMD] FCH USB OHCI Controller */ static int pci_quirk_amd_sb_acs(struct pci_dev *dev, u16 acs_flags) { #ifdef CONFIG_ACPI struct acpi_table_header *header = NULL; acpi_status status; /* Targeting multifunction devices on the SB (appears on root bus) */ if (!dev->multifunction || !pci_is_root_bus(dev->bus)) return -ENODEV; /* The IVRS table describes the AMD IOMMU */ status = acpi_get_table("IVRS", 0, &header); if (ACPI_FAILURE(status)) return -ENODEV; acpi_put_table(header); /* Filter out flags not applicable to multifunction */ acs_flags &= (PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC | PCI_ACS_DT); return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_RR | PCI_ACS_CR); #else return -ENODEV; #endif } static bool pci_quirk_cavium_acs_match(struct pci_dev *dev) { if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) return false; switch (dev->device) { /* * Effectively selects all downstream ports for whole ThunderX1 * (which represents 8 SoCs). */ case 0xa000 ... 0xa7ff: /* ThunderX1 */ case 0xaf84: /* ThunderX2 */ case 0xb884: /* ThunderX3 */ return true; default: return false; } } static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags) { if (!pci_quirk_cavium_acs_match(dev)) return -ENOTTY; /* * Cavium Root Ports don't advertise an ACS capability. However, * the RTL internally implements similar protection as if ACS had * Source Validation, Request Redirection, Completion Redirection, * and Upstream Forwarding features enabled. Assert that the * hardware implements and enables equivalent ACS functionality for * these flags. */ return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); } static int pci_quirk_xgene_acs(struct pci_dev *dev, u16 acs_flags) { /* * X-Gene Root Ports matching this quirk do not allow peer-to-peer * transactions with others, allowing masking out these bits as if they * were unimplemented in the ACS capability. */ return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); } /* * Many Zhaoxin Root Ports and Switch Downstream Ports have no ACS capability. * But the implementation could block peer-to-peer transactions between them * and provide ACS-like functionality. */ static int pci_quirk_zhaoxin_pcie_ports_acs(struct pci_dev *dev, u16 acs_flags) { if (!pci_is_pcie(dev) || ((pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) && (pci_pcie_type(dev) != PCI_EXP_TYPE_DOWNSTREAM))) return -ENOTTY; /* * Future Zhaoxin Root Ports and Switch Downstream Ports will * implement ACS capability in accordance with the PCIe Spec. */ switch (dev->device) { case 0x0710 ... 0x071e: case 0x0721: case 0x0723 ... 0x0752: return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); } return false; } /* * Many Intel PCH Root Ports do provide ACS-like features to disable peer * transactions and validate bus numbers in requests, but do not provide an * actual PCIe ACS capability. This is the list of device IDs known to fall * into that category as provided by Intel in Red Hat bugzilla 1037684. */ static const u16 pci_quirk_intel_pch_acs_ids[] = { /* Ibexpeak PCH */ 0x3b42, 0x3b43, 0x3b44, 0x3b45, 0x3b46, 0x3b47, 0x3b48, 0x3b49, 0x3b4a, 0x3b4b, 0x3b4c, 0x3b4d, 0x3b4e, 0x3b4f, 0x3b50, 0x3b51, /* Cougarpoint PCH */ 0x1c10, 0x1c11, 0x1c12, 0x1c13, 0x1c14, 0x1c15, 0x1c16, 0x1c17, 0x1c18, 0x1c19, 0x1c1a, 0x1c1b, 0x1c1c, 0x1c1d, 0x1c1e, 0x1c1f, /* Pantherpoint PCH */ 0x1e10, 0x1e11, 0x1e12, 0x1e13, 0x1e14, 0x1e15, 0x1e16, 0x1e17, 0x1e18, 0x1e19, 0x1e1a, 0x1e1b, 0x1e1c, 0x1e1d, 0x1e1e, 0x1e1f, /* Lynxpoint-H PCH */ 0x8c10, 0x8c11, 0x8c12, 0x8c13, 0x8c14, 0x8c15, 0x8c16, 0x8c17, 0x8c18, 0x8c19, 0x8c1a, 0x8c1b, 0x8c1c, 0x8c1d, 0x8c1e, 0x8c1f, /* Lynxpoint-LP PCH */ 0x9c10, 0x9c11, 0x9c12, 0x9c13, 0x9c14, 0x9c15, 0x9c16, 0x9c17, 0x9c18, 0x9c19, 0x9c1a, 0x9c1b, /* Wildcat PCH */ 0x9c90, 0x9c91, 0x9c92, 0x9c93, 0x9c94, 0x9c95, 0x9c96, 0x9c97, 0x9c98, 0x9c99, 0x9c9a, 0x9c9b, /* Patsburg (X79) PCH */ 0x1d10, 0x1d12, 0x1d14, 0x1d16, 0x1d18, 0x1d1a, 0x1d1c, 0x1d1e, /* Wellsburg (X99) PCH */ 0x8d10, 0x8d11, 0x8d12, 0x8d13, 0x8d14, 0x8d15, 0x8d16, 0x8d17, 0x8d18, 0x8d19, 0x8d1a, 0x8d1b, 0x8d1c, 0x8d1d, 0x8d1e, /* Lynx Point (9 series) PCH */ 0x8c90, 0x8c92, 0x8c94, 0x8c96, 0x8c98, 0x8c9a, 0x8c9c, 0x8c9e, }; static bool pci_quirk_intel_pch_acs_match(struct pci_dev *dev) { int i; /* Filter out a few obvious non-matches first */ if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) return false; for (i = 0; i < ARRAY_SIZE(pci_quirk_intel_pch_acs_ids); i++) if (pci_quirk_intel_pch_acs_ids[i] == dev->device) return true; return false; } static int pci_quirk_intel_pch_acs(struct pci_dev *dev, u16 acs_flags) { if (!pci_quirk_intel_pch_acs_match(dev)) return -ENOTTY; if (dev->dev_flags & PCI_DEV_FLAGS_ACS_ENABLED_QUIRK) return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); return pci_acs_ctrl_enabled(acs_flags, 0); } /* * These QCOM Root Ports do provide ACS-like features to disable peer * transactions and validate bus numbers in requests, but do not provide an * actual PCIe ACS capability. Hardware supports source validation but it * will report the issue as Completer Abort instead of ACS Violation. * Hardware doesn't support peer-to-peer and each Root Port is a Root * Complex with unique segment numbers. It is not possible for one Root * Port to pass traffic to another Root Port. All PCIe transactions are * terminated inside the Root Port. */ static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags) { return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); } /* * Each of these NXP Root Ports is in a Root Complex with a unique segment * number and does provide isolation features to disable peer transactions * and validate bus numbers in requests, but does not provide an ACS * capability. */ static int pci_quirk_nxp_rp_acs(struct pci_dev *dev, u16 acs_flags) { return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); } static int pci_quirk_al_acs(struct pci_dev *dev, u16 acs_flags) { if (pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) return -ENOTTY; /* * Amazon's Annapurna Labs root ports don't include an ACS capability, * but do include ACS-like functionality. The hardware doesn't support * peer-to-peer transactions via the root port and each has a unique * segment number. * * Additionally, the root ports cannot send traffic to each other. */ acs_flags &= ~(PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); return acs_flags ? 0 : 1; } /* * Sunrise Point PCH root ports implement ACS, but unfortunately as shown in * the datasheet (Intel 100 Series Chipset Family PCH Datasheet, Vol. 2, * 12.1.46, 12.1.47)[1] this chipset uses dwords for the ACS capability and * control registers whereas the PCIe spec packs them into words (Rev 3.0, * 7.16 ACS Extended Capability). The bit definitions are correct, but the * control register is at offset 8 instead of 6 and we should probably use * dword accesses to them. This applies to the following PCI Device IDs, as * found in volume 1 of the datasheet[2]: * * 0xa110-0xa11f Sunrise Point-H PCI Express Root Port #{0-16} * 0xa167-0xa16a Sunrise Point-H PCI Express Root Port #{17-20} * * N.B. This doesn't fix what lspci shows. * * The 100 series chipset specification update includes this as errata #23[3]. * * The 200 series chipset (Union Point) has the same bug according to the * specification update (Intel 200 Series Chipset Family Platform Controller * Hub, Specification Update, January 2017, Revision 001, Document# 335194-001, * Errata 22)[4]. Per the datasheet[5], root port PCI Device IDs for this * chipset include: * * 0xa290-0xa29f PCI Express Root port #{0-16} * 0xa2e7-0xa2ee PCI Express Root port #{17-24} * * Mobile chipsets are also affected, 7th & 8th Generation * Specification update confirms ACS errata 22, status no fix: (7th Generation * Intel Processor Family I/O for U/Y Platforms and 8th Generation Intel * Processor Family I/O for U Quad Core Platforms Specification Update, * August 2017, Revision 002, Document#: 334660-002)[6] * Device IDs from I/O datasheet: (7th Generation Intel Processor Family I/O * for U/Y Platforms and 8th Generation Intel ® Processor Family I/O for U * Quad Core Platforms, Vol 1 of 2, August 2017, Document#: 334658-003)[7] * * 0x9d10-0x9d1b PCI Express Root port #{1-12} * * [1] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html * [2] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html * [3] https://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html * [4] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html * [5] https://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html * [6] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-spec-update.html * [7] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-datasheet-vol-1.html */ static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev) { if (!pci_is_pcie(dev) || pci_pcie_type(dev) != PCI_EXP_TYPE_ROOT_PORT) return false; switch (dev->device) { case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */ case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */ case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */ return true; } return false; } #define INTEL_SPT_ACS_CTRL (PCI_ACS_CAP + 4) static int pci_quirk_intel_spt_pch_acs(struct pci_dev *dev, u16 acs_flags) { int pos; u32 cap, ctrl; if (!pci_quirk_intel_spt_pch_acs_match(dev)) return -ENOTTY; pos = dev->acs_cap; if (!pos) return -ENOTTY; /* see pci_acs_flags_enabled() */ pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap); acs_flags &= (cap | PCI_ACS_EC); pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl); return pci_acs_ctrl_enabled(acs_flags, ctrl); } static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags) { /* * SV, TB, and UF are not relevant to multifunction endpoints. * * Multifunction devices are only required to implement RR, CR, and DT * in their ACS capability if they support peer-to-peer transactions. * Devices matching this quirk have been verified by the vendor to not * perform peer-to-peer with other functions, allowing us to mask out * these bits as if they were unimplemented in the ACS capability. */ return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT); } static int pci_quirk_rciep_acs(struct pci_dev *dev, u16 acs_flags) { /* * Intel RCiEP's are required to allow p2p only on translated * addresses. Refer to Intel VT-d specification, r3.1, sec 3.16, * "Root-Complex Peer to Peer Considerations". */ if (pci_pcie_type(dev) != PCI_EXP_TYPE_RC_END) return -ENOTTY; return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); } static int pci_quirk_brcm_acs(struct pci_dev *dev, u16 acs_flags) { /* * iProc PAXB Root Ports don't advertise an ACS capability, but * they do not allow peer-to-peer transactions between Root Ports. * Allow each Root Port to be in a separate IOMMU group by masking * SV/RR/CR/UF bits. */ return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); } /* * Wangxun 10G/1G NICs have no ACS capability, and on multi-function * devices, peer-to-peer transactions are not be used between the functions. * So add an ACS quirk for below devices to isolate functions. * SFxxx 1G NICs(em). * RP1000/RP2000 10G NICs(sp). */ static int pci_quirk_wangxun_nic_acs(struct pci_dev *dev, u16 acs_flags) { switch (dev->device) { case 0x0100 ... 0x010F: case 0x1001: case 0x2001: return pci_acs_ctrl_enabled(acs_flags, PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF); } return false; } static const struct pci_dev_acs_enabled { u16 vendor; u16 device; int (*acs_enabled)(struct pci_dev *dev, u16 acs_flags); } pci_dev_acs_enabled[] = { { PCI_VENDOR_ID_ATI, 0x4385, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_ATI, 0x439c, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_ATI, 0x4383, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_ATI, 0x439d, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_ATI, 0x4384, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_ATI, 0x4399, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_AMD, 0x780f, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_AMD, 0x7809, pci_quirk_amd_sb_acs }, { PCI_VENDOR_ID_SOLARFLARE, 0x0903, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_SOLARFLARE, 0x0923, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_SOLARFLARE, 0x0A03, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10C6, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10DB, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10DD, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10E1, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10F1, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10F7, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10F8, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10F9, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10FA, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10FB, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10FC, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1507, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1514, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x151C, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1529, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x152A, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x154D, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x154F, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1551, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1558, pci_quirk_mf_endpoint_acs }, /* 82580 */ { PCI_VENDOR_ID_INTEL, 0x1509, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x150E, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x150F, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1510, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1511, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1516, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1527, pci_quirk_mf_endpoint_acs }, /* 82576 */ { PCI_VENDOR_ID_INTEL, 0x10C9, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10E6, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10E7, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10E8, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x150A, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x150D, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1518, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1526, pci_quirk_mf_endpoint_acs }, /* 82575 */ { PCI_VENDOR_ID_INTEL, 0x10A7, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10A9, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10D6, pci_quirk_mf_endpoint_acs }, /* I350 */ { PCI_VENDOR_ID_INTEL, 0x1521, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1522, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1523, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1524, pci_quirk_mf_endpoint_acs }, /* 82571 (Quads omitted due to non-ACS switch) */ { PCI_VENDOR_ID_INTEL, 0x105E, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x105F, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x1060, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x10D9, pci_quirk_mf_endpoint_acs }, /* I219 */ { PCI_VENDOR_ID_INTEL, 0x15b7, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, 0x15b8, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_rciep_acs }, /* QCOM QDF2xxx root ports */ { PCI_VENDOR_ID_QCOM, 0x0400, pci_quirk_qcom_rp_acs }, { PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs }, /* HXT SD4800 root ports. The ACS design is same as QCOM QDF2xxx */ { PCI_VENDOR_ID_HXT, 0x0401, pci_quirk_qcom_rp_acs }, /* Intel PCH root ports */ { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs }, { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs }, { 0x19a2, 0x710, pci_quirk_mf_endpoint_acs }, /* Emulex BE3-R */ { 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */ /* Cavium ThunderX */ { PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs }, /* Cavium multi-function devices */ { PCI_VENDOR_ID_CAVIUM, 0xA026, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_CAVIUM, 0xA059, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_CAVIUM, 0xA060, pci_quirk_mf_endpoint_acs }, /* APM X-Gene */ { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs }, /* Ampere Computing */ { PCI_VENDOR_ID_AMPERE, 0xE005, pci_quirk_xgene_acs }, { PCI_VENDOR_ID_AMPERE, 0xE006, pci_quirk_xgene_acs }, { PCI_VENDOR_ID_AMPERE, 0xE007, pci_quirk_xgene_acs }, { PCI_VENDOR_ID_AMPERE, 0xE008, pci_quirk_xgene_acs }, { PCI_VENDOR_ID_AMPERE, 0xE009, pci_quirk_xgene_acs }, { PCI_VENDOR_ID_AMPERE, 0xE00A, pci_quirk_xgene_acs }, { PCI_VENDOR_ID_AMPERE, 0xE00B, pci_quirk_xgene_acs }, { PCI_VENDOR_ID_AMPERE, 0xE00C, pci_quirk_xgene_acs }, /* Broadcom multi-function device */ { PCI_VENDOR_ID_BROADCOM, 0x16D7, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1750, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1751, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1752, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1760, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1761, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1762, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0x1763, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_BROADCOM, 0xD714, pci_quirk_brcm_acs }, /* Amazon Annapurna Labs */ { PCI_VENDOR_ID_AMAZON_ANNAPURNA_LABS, 0x0031, pci_quirk_al_acs }, /* Zhaoxin multi-function devices */ { PCI_VENDOR_ID_ZHAOXIN, 0x3038, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_ZHAOXIN, 0x3104, pci_quirk_mf_endpoint_acs }, { PCI_VENDOR_ID_ZHAOXIN, 0x9083, pci_quirk_mf_endpoint_acs }, /* NXP root ports, xx=16, 12, or 08 cores */ /* LX2xx0A : without security features + CAN-FD */ { PCI_VENDOR_ID_NXP, 0x8d81, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8da1, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8d83, pci_quirk_nxp_rp_acs }, /* LX2xx0C : security features + CAN-FD */ { PCI_VENDOR_ID_NXP, 0x8d80, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8da0, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8d82, pci_quirk_nxp_rp_acs }, /* LX2xx0E : security features + CAN */ { PCI_VENDOR_ID_NXP, 0x8d90, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8db0, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8d92, pci_quirk_nxp_rp_acs }, /* LX2xx0N : without security features + CAN */ { PCI_VENDOR_ID_NXP, 0x8d91, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8db1, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8d93, pci_quirk_nxp_rp_acs }, /* LX2xx2A : without security features + CAN-FD */ { PCI_VENDOR_ID_NXP, 0x8d89, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8da9, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8d8b, pci_quirk_nxp_rp_acs }, /* LX2xx2C : security features + CAN-FD */ { PCI_VENDOR_ID_NXP, 0x8d88, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8da8, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8d8a, pci_quirk_nxp_rp_acs }, /* LX2xx2E : security features + CAN */ { PCI_VENDOR_ID_NXP, 0x8d98, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8db8, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8d9a, pci_quirk_nxp_rp_acs }, /* LX2xx2N : without security features + CAN */ { PCI_VENDOR_ID_NXP, 0x8d99, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8db9, pci_quirk_nxp_rp_acs }, { PCI_VENDOR_ID_NXP, 0x8d9b, pci_quirk_nxp_rp_acs }, /* Zhaoxin Root/Downstream Ports */ { PCI_VENDOR_ID_ZHAOXIN, PCI_ANY_ID, pci_quirk_zhaoxin_pcie_ports_acs }, /* Wangxun nics */ { PCI_VENDOR_ID_WANGXUN, PCI_ANY_ID, pci_quirk_wangxun_nic_acs }, { 0 } }; /* * pci_dev_specific_acs_enabled - check whether device provides ACS controls * @dev: PCI device * @acs_flags: Bitmask of desired ACS controls * * Returns: * -ENOTTY: No quirk applies to this device; we can't tell whether the * device provides the desired controls * 0: Device does not provide all the desired controls * >0: Device provides all the controls in @acs_flags */ int pci_dev_specific_acs_enabled(struct pci_dev *dev, u16 acs_flags) { const struct pci_dev_acs_enabled *i; int ret; /* * Allow devices that do not expose standard PCIe ACS capabilities * or control to indicate their support here. Multi-function express * devices which do not allow internal peer-to-peer between functions, * but do not implement PCIe ACS may wish to return true here. */ for (i = pci_dev_acs_enabled; i->acs_enabled; i++) { if ((i->vendor == dev->vendor || i->vendor == (u16)PCI_ANY_ID) && (i->device == dev->device || i->device == (u16)PCI_ANY_ID)) { ret = i->acs_enabled(dev, acs_flags); if (ret >= 0) return ret; } } return -ENOTTY; } /* Config space offset of Root Complex Base Address register */ #define INTEL_LPC_RCBA_REG 0xf0 /* 31:14 RCBA address */ #define INTEL_LPC_RCBA_MASK 0xffffc000 /* RCBA Enable */ #define INTEL_LPC_RCBA_ENABLE (1 << 0) /* Backbone Scratch Pad Register */ #define INTEL_BSPR_REG 0x1104 /* Backbone Peer Non-Posted Disable */ #define INTEL_BSPR_REG_BPNPD (1 << 8) /* Backbone Peer Posted Disable */ #define INTEL_BSPR_REG_BPPD (1 << 9) /* Upstream Peer Decode Configuration Register */ #define INTEL_UPDCR_REG 0x1014 /* 5:0 Peer Decode Enable bits */ #define INTEL_UPDCR_REG_MASK 0x3f static int pci_quirk_enable_intel_lpc_acs(struct pci_dev *dev) { u32 rcba, bspr, updcr; void __iomem *rcba_mem; /* * Read the RCBA register from the LPC (D31:F0). PCH root ports * are D28:F* and therefore get probed before LPC, thus we can't * use pci_get_slot()/pci_read_config_dword() here. */ pci_bus_read_config_dword(dev->bus, PCI_DEVFN(31, 0), INTEL_LPC_RCBA_REG, &rcba); if (!(rcba & INTEL_LPC_RCBA_ENABLE)) return -EINVAL; rcba_mem = ioremap(rcba & INTEL_LPC_RCBA_MASK, PAGE_ALIGN(INTEL_UPDCR_REG)); if (!rcba_mem) return -ENOMEM; /* * The BSPR can disallow peer cycles, but it's set by soft strap and * therefore read-only. If both posted and non-posted peer cycles are * disallowed, we're ok. If either are allowed, then we need to use * the UPDCR to disable peer decodes for each port. This provides the * PCIe ACS equivalent of PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF */ bspr = readl(rcba_mem + INTEL_BSPR_REG); bspr &= INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD; if (bspr != (INTEL_BSPR_REG_BPNPD | INTEL_BSPR_REG_BPPD)) { updcr = readl(rcba_mem + INTEL_UPDCR_REG); if (updcr & INTEL_UPDCR_REG_MASK) { pci_info(dev, "Disabling UPDCR peer decodes\n"); updcr &= ~INTEL_UPDCR_REG_MASK; writel(updcr, rcba_mem + INTEL_UPDCR_REG); } } iounmap(rcba_mem); return 0; } /* Miscellaneous Port Configuration register */ #define INTEL_MPC_REG 0xd8 /* MPC: Invalid Receive Bus Number Check Enable */ #define INTEL_MPC_REG_IRBNCE (1 << 26) static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev) { u32 mpc; /* * When enabled, the IRBNCE bit of the MPC register enables the * equivalent of PCI ACS Source Validation (PCI_ACS_SV), which * ensures that requester IDs fall within the bus number range * of the bridge. Enable if not already. */ pci_read_config_dword(dev, INTEL_MPC_REG, &mpc); if (!(mpc & INTEL_MPC_REG_IRBNCE)) { pci_info(dev, "Enabling MPC IRBNCE\n"); mpc |= INTEL_MPC_REG_IRBNCE; pci_write_config_word(dev, INTEL_MPC_REG, mpc); } } /* * Currently this quirk does the equivalent of * PCI_ACS_SV | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF * * TODO: This quirk also needs to do equivalent of PCI_ACS_TB, * if dev->external_facing || dev->untrusted */ static int pci_quirk_enable_intel_pch_acs(struct pci_dev *dev) { if (!pci_quirk_intel_pch_acs_match(dev)) return -ENOTTY; if (pci_quirk_enable_intel_lpc_acs(dev)) { pci_warn(dev, "Failed to enable Intel PCH ACS quirk\n"); return 0; } pci_quirk_enable_intel_rp_mpc_acs(dev); dev->dev_flags |= PCI_DEV_FLAGS_ACS_ENABLED_QUIRK; pci_info(dev, "Intel PCH root port ACS workaround enabled\n"); return 0; } static int pci_quirk_enable_intel_spt_pch_acs(struct pci_dev *dev) { int pos; u32 cap, ctrl; if (!pci_quirk_intel_spt_pch_acs_match(dev)) return -ENOTTY; pos = dev->acs_cap; if (!pos) return -ENOTTY; pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap); pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl); ctrl |= (cap & PCI_ACS_SV); ctrl |= (cap & PCI_ACS_RR); ctrl |= (cap & PCI_ACS_CR); ctrl |= (cap & PCI_ACS_UF); if (pci_ats_disabled() || dev->external_facing || dev->untrusted) ctrl |= (cap & PCI_ACS_TB); pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl); pci_info(dev, "Intel SPT PCH root port ACS workaround enabled\n"); return 0; } static int pci_quirk_disable_intel_spt_pch_acs_redir(struct pci_dev *dev) { int pos; u32 cap, ctrl; if (!pci_quirk_intel_spt_pch_acs_match(dev)) return -ENOTTY; pos = dev->acs_cap; if (!pos) return -ENOTTY; pci_read_config_dword(dev, pos + PCI_ACS_CAP, &cap); pci_read_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, &ctrl); ctrl &= ~(PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_EC); pci_write_config_dword(dev, pos + INTEL_SPT_ACS_CTRL, ctrl); pci_info(dev, "Intel SPT PCH root port workaround: disabled ACS redirect\n"); return 0; } static const struct pci_dev_acs_ops { u16 vendor; u16 device; int (*enable_acs)(struct pci_dev *dev); int (*disable_acs_redir)(struct pci_dev *dev); } pci_dev_acs_ops[] = { { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, .enable_acs = pci_quirk_enable_intel_pch_acs, }, { PCI_VENDOR_ID_INTEL, PCI_ANY_ID, .enable_acs = pci_quirk_enable_intel_spt_pch_acs, .disable_acs_redir = pci_quirk_disable_intel_spt_pch_acs_redir, }, }; int pci_dev_specific_enable_acs(struct pci_dev *dev) { const struct pci_dev_acs_ops *p; int i, ret; for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) { p = &pci_dev_acs_ops[i]; if ((p->vendor == dev->vendor || p->vendor == (u16)PCI_ANY_ID) && (p->device == dev->device || p->device == (u16)PCI_ANY_ID) && p->enable_acs) { ret = p->enable_acs(dev); if (ret >= 0) return ret; } } return -ENOTTY; } int pci_dev_specific_disable_acs_redir(struct pci_dev *dev) { const struct pci_dev_acs_ops *p; int i, ret; for (i = 0; i < ARRAY_SIZE(pci_dev_acs_ops); i++) { p = &pci_dev_acs_ops[i]; if ((p->vendor == dev->vendor || p->vendor == (u16)PCI_ANY_ID) && (p->device == dev->device || p->device == (u16)PCI_ANY_ID) && p->disable_acs_redir) { ret = p->disable_acs_redir(dev); if (ret >= 0) return ret; } } return -ENOTTY; } /* * The PCI capabilities list for Intel DH895xCC VFs (device ID 0x0443) with * QuickAssist Technology (QAT) is prematurely terminated in hardware. The * Next Capability pointer in the MSI Capability Structure should point to * the PCIe Capability Structure but is incorrectly hardwired as 0 terminating * the list. */ static void quirk_intel_qat_vf_cap(struct pci_dev *pdev) { int pos, i = 0, ret; u8 next_cap; u16 reg16, *cap; struct pci_cap_saved_state *state; /* Bail if the hardware bug is fixed */ if (pdev->pcie_cap || pci_find_capability(pdev, PCI_CAP_ID_EXP)) return; /* Bail if MSI Capability Structure is not found for some reason */ pos = pci_find_capability(pdev, PCI_CAP_ID_MSI); if (!pos) return; /* * Bail if Next Capability pointer in the MSI Capability Structure * is not the expected incorrect 0x00. */ pci_read_config_byte(pdev, pos + 1, &next_cap); if (next_cap) return; /* * PCIe Capability Structure is expected to be at 0x50 and should * terminate the list (Next Capability pointer is 0x00). Verify * Capability Id and Next Capability pointer is as expected. * Open-code some of set_pcie_port_type() and pci_cfg_space_size_ext() * to correctly set kernel data structures which have already been * set incorrectly due to the hardware bug. */ pos = 0x50; pci_read_config_word(pdev, pos, ®16); if (reg16 == (0x0000 | PCI_CAP_ID_EXP)) { u32 status; #ifndef PCI_EXP_SAVE_REGS #define PCI_EXP_SAVE_REGS 7 #endif int size = PCI_EXP_SAVE_REGS * sizeof(u16); pdev->pcie_cap = pos; pci_read_config_word(pdev, pos + PCI_EXP_FLAGS, ®16); pdev->pcie_flags_reg = reg16; pci_read_config_word(pdev, pos + PCI_EXP_DEVCAP, ®16); pdev->pcie_mpss = reg16 & PCI_EXP_DEVCAP_PAYLOAD; pdev->cfg_size = PCI_CFG_SPACE_EXP_SIZE; ret = pci_read_config_dword(pdev, PCI_CFG_SPACE_SIZE, &status); if ((ret != PCIBIOS_SUCCESSFUL) || (PCI_POSSIBLE_ERROR(status))) pdev->cfg_size = PCI_CFG_SPACE_SIZE; if (pci_find_saved_cap(pdev, PCI_CAP_ID_EXP)) return; /* Save PCIe cap */ state = kzalloc(sizeof(*state) + size, GFP_KERNEL); if (!state) return; state->cap.cap_nr = PCI_CAP_ID_EXP; state->cap.cap_extended = 0; state->cap.size = size; cap = (u16 *)&state->cap.data[0]; pcie_capability_read_word(pdev, PCI_EXP_DEVCTL, &cap[i++]); pcie_capability_read_word(pdev, PCI_EXP_LNKCTL, &cap[i++]); pcie_capability_read_word(pdev, PCI_EXP_SLTCTL, &cap[i++]); pcie_capability_read_word(pdev, PCI_EXP_RTCTL, &cap[i++]); pcie_capability_read_word(pdev, PCI_EXP_DEVCTL2, &cap[i++]); pcie_capability_read_word(pdev, PCI_EXP_LNKCTL2, &cap[i++]); pcie_capability_read_word(pdev, PCI_EXP_SLTCTL2, &cap[i++]); hlist_add_head(&state->next, &pdev->saved_cap_space); } } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x443, quirk_intel_qat_vf_cap); /* * FLR may cause the following to devices to hang: * * AMD Starship/Matisse HD Audio Controller 0x1487 * AMD Starship USB 3.0 Host Controller 0x148c * AMD Matisse USB 3.0 Host Controller 0x149c * Intel 82579LM Gigabit Ethernet Controller 0x1502 * Intel 82579V Gigabit Ethernet Controller 0x1503 * */ static void quirk_no_flr(struct pci_dev *dev) { dev->dev_flags |= PCI_DEV_FLAGS_NO_FLR_RESET; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x1487, quirk_no_flr); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x148c, quirk_no_flr); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x149c, quirk_no_flr); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_AMD, 0x7901, quirk_no_flr); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1502, quirk_no_flr); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1503, quirk_no_flr); /* FLR may cause the SolidRun SNET DPU (rev 0x1) to hang */ static void quirk_no_flr_snet(struct pci_dev *dev) { if (dev->revision == 0x1) quirk_no_flr(dev); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLIDRUN, 0x1000, quirk_no_flr_snet); static void quirk_no_ext_tags(struct pci_dev *pdev) { struct pci_host_bridge *bridge = pci_find_host_bridge(pdev->bus); if (!bridge) return; bridge->no_ext_tags = 1; pci_info(pdev, "disabling Extended Tags (this device can't handle them)\n"); pci_walk_bus(bridge->bus, pci_configure_extended_tags, NULL); } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_3WARE, 0x1004, quirk_no_ext_tags); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0132, quirk_no_ext_tags); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0140, quirk_no_ext_tags); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0141, quirk_no_ext_tags); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0142, quirk_no_ext_tags); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0144, quirk_no_ext_tags); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0420, quirk_no_ext_tags); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, 0x0422, quirk_no_ext_tags); #ifdef CONFIG_PCI_ATS static void quirk_no_ats(struct pci_dev *pdev) { pci_info(pdev, "disabling ATS\n"); pdev->ats_cap = 0; } /* * Some devices require additional driver setup to enable ATS. Don't use * ATS for those devices as ATS will be enabled before the driver has had a * chance to load and configure the device. */ static void quirk_amd_harvest_no_ats(struct pci_dev *pdev) { if (pdev->device == 0x15d8) { if (pdev->revision == 0xcf && pdev->subsystem_vendor == 0xea50 && (pdev->subsystem_device == 0xce19 || pdev->subsystem_device == 0xcc10 || pdev->subsystem_device == 0xcc08)) quirk_no_ats(pdev); } else { quirk_no_ats(pdev); } } /* AMD Stoney platform GPU */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_amd_harvest_no_ats); /* AMD Iceland dGPU */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats); /* AMD Navi10 dGPU */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7310, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7318, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7319, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731a, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731b, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731e, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x731f, quirk_amd_harvest_no_ats); /* AMD Navi14 dGPU */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7341, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7347, quirk_amd_harvest_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x734f, quirk_amd_harvest_no_ats); /* AMD Raven platform iGPU */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x15d8, quirk_amd_harvest_no_ats); /* * Intel IPU E2000 revisions before C0 implement incorrect endianness * in ATS Invalidate Request message body. Disable ATS for those devices. */ static void quirk_intel_e2000_no_ats(struct pci_dev *pdev) { if (pdev->revision < 0x20) quirk_no_ats(pdev); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1451, quirk_intel_e2000_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1452, quirk_intel_e2000_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1453, quirk_intel_e2000_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1454, quirk_intel_e2000_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1455, quirk_intel_e2000_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1457, quirk_intel_e2000_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x1459, quirk_intel_e2000_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x145a, quirk_intel_e2000_no_ats); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, 0x145c, quirk_intel_e2000_no_ats); #endif /* CONFIG_PCI_ATS */ /* Freescale PCIe doesn't support MSI in RC mode */ static void quirk_fsl_no_msi(struct pci_dev *pdev) { if (pci_pcie_type(pdev) == PCI_EXP_TYPE_ROOT_PORT) pdev->no_msi = 1; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_fsl_no_msi); /* * Although not allowed by the spec, some multi-function devices have * dependencies of one function (consumer) on another (supplier). For the * consumer to work in D0, the supplier must also be in D0. Create a * device link from the consumer to the supplier to enforce this * dependency. Runtime PM is allowed by default on the consumer to prevent * it from permanently keeping the supplier awake. */ static void pci_create_device_link(struct pci_dev *pdev, unsigned int consumer, unsigned int supplier, unsigned int class, unsigned int class_shift) { struct pci_dev *supplier_pdev; if (PCI_FUNC(pdev->devfn) != consumer) return; supplier_pdev = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus), pdev->bus->number, PCI_DEVFN(PCI_SLOT(pdev->devfn), supplier)); if (!supplier_pdev || (supplier_pdev->class >> class_shift) != class) { pci_dev_put(supplier_pdev); return; } if (device_link_add(&pdev->dev, &supplier_pdev->dev, DL_FLAG_STATELESS | DL_FLAG_PM_RUNTIME)) pci_info(pdev, "D0 power state depends on %s\n", pci_name(supplier_pdev)); else pci_err(pdev, "Cannot enforce power dependency on %s\n", pci_name(supplier_pdev)); pm_runtime_allow(&pdev->dev); pci_dev_put(supplier_pdev); } /* * Create device link for GPUs with integrated HDA controller for streaming * audio to attached displays. */ static void quirk_gpu_hda(struct pci_dev *hda) { pci_create_device_link(hda, 1, 0, PCI_BASE_CLASS_DISPLAY, 16); } DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda); DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_AMD, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda); DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, PCI_CLASS_MULTIMEDIA_HD_AUDIO, 8, quirk_gpu_hda); /* * Create device link for GPUs with integrated USB xHCI Host * controller to VGA. */ static void quirk_gpu_usb(struct pci_dev *usb) { pci_create_device_link(usb, 2, 0, PCI_BASE_CLASS_DISPLAY, 16); } DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb); DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID, PCI_CLASS_SERIAL_USB, 8, quirk_gpu_usb); /* * Create device link for GPUs with integrated Type-C UCSI controller * to VGA. Currently there is no class code defined for UCSI device over PCI * so using UNKNOWN class for now and it will be updated when UCSI * over PCI gets a class code. */ #define PCI_CLASS_SERIAL_UNKNOWN 0x0c80 static void quirk_gpu_usb_typec_ucsi(struct pci_dev *ucsi) { pci_create_device_link(ucsi, 3, 0, PCI_BASE_CLASS_DISPLAY, 16); } DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, PCI_CLASS_SERIAL_UNKNOWN, 8, quirk_gpu_usb_typec_ucsi); DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID, PCI_CLASS_SERIAL_UNKNOWN, 8, quirk_gpu_usb_typec_ucsi); /* * Enable the NVIDIA GPU integrated HDA controller if the BIOS left it * disabled. https://devtalk.nvidia.com/default/topic/1024022 */ static void quirk_nvidia_hda(struct pci_dev *gpu) { u8 hdr_type; u32 val; /* There was no integrated HDA controller before MCP89 */ if (gpu->device < PCI_DEVICE_ID_NVIDIA_GEFORCE_320M) return; /* Bit 25 at offset 0x488 enables the HDA controller */ pci_read_config_dword(gpu, 0x488, &val); if (val & BIT(25)) return; pci_info(gpu, "Enabling HDA controller\n"); pci_write_config_dword(gpu, 0x488, val | BIT(25)); /* The GPU becomes a multi-function device when the HDA is enabled */ pci_read_config_byte(gpu, PCI_HEADER_TYPE, &hdr_type); gpu->multifunction = FIELD_GET(PCI_HEADER_TYPE_MFD, hdr_type); } DECLARE_PCI_FIXUP_CLASS_HEADER(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda); DECLARE_PCI_FIXUP_CLASS_RESUME_EARLY(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY, 16, quirk_nvidia_hda); /* * Some IDT switches incorrectly flag an ACS Source Validation error on * completions for config read requests even though PCIe r4.0, sec * 6.12.1.1, says that completions are never affected by ACS Source * Validation. Here's the text of IDT 89H32H8G3-YC, erratum #36: * * Item #36 - Downstream port applies ACS Source Validation to Completions * Section 6.12.1.1 of the PCI Express Base Specification 3.1 states that * completions are never affected by ACS Source Validation. However, * completions received by a downstream port of the PCIe switch from a * device that has not yet captured a PCIe bus number are incorrectly * dropped by ACS Source Validation by the switch downstream port. * * The workaround suggested by IDT is to issue a config write to the * downstream device before issuing the first config read. This allows the * downstream device to capture its bus and device numbers (see PCIe r4.0, * sec 2.2.9), thus avoiding the ACS error on the completion. * * However, we don't know when the device is ready to accept the config * write, so we do config reads until we receive a non-Config Request Retry * Status, then do the config write. * * To avoid hitting the erratum when doing the config reads, we disable ACS * SV around this process. */ int pci_idt_bus_quirk(struct pci_bus *bus, int devfn, u32 *l, int timeout) { int pos; u16 ctrl = 0; bool found; struct pci_dev *bridge = bus->self; pos = bridge->acs_cap; /* Disable ACS SV before initial config reads */ if (pos) { pci_read_config_word(bridge, pos + PCI_ACS_CTRL, &ctrl); if (ctrl & PCI_ACS_SV) pci_write_config_word(bridge, pos + PCI_ACS_CTRL, ctrl & ~PCI_ACS_SV); } found = pci_bus_generic_read_dev_vendor_id(bus, devfn, l, timeout); /* Write Vendor ID (read-only) so the endpoint latches its bus/dev */ if (found) pci_bus_write_config_word(bus, devfn, PCI_VENDOR_ID, 0); /* Re-enable ACS_SV if it was previously enabled */ if (ctrl & PCI_ACS_SV) pci_write_config_word(bridge, pos + PCI_ACS_CTRL, ctrl); return found; } /* * Microsemi Switchtec NTB uses devfn proxy IDs to move TLPs between * NT endpoints via the internal switch fabric. These IDs replace the * originating Requester ID TLPs which access host memory on peer NTB * ports. Therefore, all proxy IDs must be aliased to the NTB device * to permit access when the IOMMU is turned on. */ static void quirk_switchtec_ntb_dma_alias(struct pci_dev *pdev) { void __iomem *mmio; struct ntb_info_regs __iomem *mmio_ntb; struct ntb_ctrl_regs __iomem *mmio_ctrl; u64 partition_map; u8 partition; int pp; if (pci_enable_device(pdev)) { pci_err(pdev, "Cannot enable Switchtec device\n"); return; } mmio = pci_iomap(pdev, 0, 0); if (mmio == NULL) { pci_disable_device(pdev); pci_err(pdev, "Cannot iomap Switchtec device\n"); return; } pci_info(pdev, "Setting Switchtec proxy ID aliases\n"); mmio_ntb = mmio + SWITCHTEC_GAS_NTB_OFFSET; mmio_ctrl = (void __iomem *) mmio_ntb + SWITCHTEC_NTB_REG_CTRL_OFFSET; partition = ioread8(&mmio_ntb->partition_id); partition_map = ioread32(&mmio_ntb->ep_map); partition_map |= ((u64) ioread32(&mmio_ntb->ep_map + 4)) << 32; partition_map &= ~(1ULL << partition); for (pp = 0; pp < (sizeof(partition_map) * 8); pp++) { struct ntb_ctrl_regs __iomem *mmio_peer_ctrl; u32 table_sz = 0; int te; if (!(partition_map & (1ULL << pp))) continue; pci_dbg(pdev, "Processing partition %d\n", pp); mmio_peer_ctrl = &mmio_ctrl[pp]; table_sz = ioread16(&mmio_peer_ctrl->req_id_table_size); if (!table_sz) { pci_warn(pdev, "Partition %d table_sz 0\n", pp); continue; } if (table_sz > 512) { pci_warn(pdev, "Invalid Switchtec partition %d table_sz %d\n", pp, table_sz); continue; } for (te = 0; te < table_sz; te++) { u32 rid_entry; u8 devfn; rid_entry = ioread32(&mmio_peer_ctrl->req_id_table[te]); devfn = (rid_entry >> 1) & 0xFF; pci_dbg(pdev, "Aliasing Partition %d Proxy ID %02x.%d\n", pp, PCI_SLOT(devfn), PCI_FUNC(devfn)); pci_add_dma_alias(pdev, devfn, 1); } } pci_iounmap(pdev, mmio); pci_disable_device(pdev); } #define SWITCHTEC_QUIRK(vid) \ DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_MICROSEMI, vid, \ PCI_CLASS_BRIDGE_OTHER, 8, quirk_switchtec_ntb_dma_alias) SWITCHTEC_QUIRK(0x8531); /* PFX 24xG3 */ SWITCHTEC_QUIRK(0x8532); /* PFX 32xG3 */ SWITCHTEC_QUIRK(0x8533); /* PFX 48xG3 */ SWITCHTEC_QUIRK(0x8534); /* PFX 64xG3 */ SWITCHTEC_QUIRK(0x8535); /* PFX 80xG3 */ SWITCHTEC_QUIRK(0x8536); /* PFX 96xG3 */ SWITCHTEC_QUIRK(0x8541); /* PSX 24xG3 */ SWITCHTEC_QUIRK(0x8542); /* PSX 32xG3 */ SWITCHTEC_QUIRK(0x8543); /* PSX 48xG3 */ SWITCHTEC_QUIRK(0x8544); /* PSX 64xG3 */ SWITCHTEC_QUIRK(0x8545); /* PSX 80xG3 */ SWITCHTEC_QUIRK(0x8546); /* PSX 96xG3 */ SWITCHTEC_QUIRK(0x8551); /* PAX 24XG3 */ SWITCHTEC_QUIRK(0x8552); /* PAX 32XG3 */ SWITCHTEC_QUIRK(0x8553); /* PAX 48XG3 */ SWITCHTEC_QUIRK(0x8554); /* PAX 64XG3 */ SWITCHTEC_QUIRK(0x8555); /* PAX 80XG3 */ SWITCHTEC_QUIRK(0x8556); /* PAX 96XG3 */ SWITCHTEC_QUIRK(0x8561); /* PFXL 24XG3 */ SWITCHTEC_QUIRK(0x8562); /* PFXL 32XG3 */ SWITCHTEC_QUIRK(0x8563); /* PFXL 48XG3 */ SWITCHTEC_QUIRK(0x8564); /* PFXL 64XG3 */ SWITCHTEC_QUIRK(0x8565); /* PFXL 80XG3 */ SWITCHTEC_QUIRK(0x8566); /* PFXL 96XG3 */ SWITCHTEC_QUIRK(0x8571); /* PFXI 24XG3 */ SWITCHTEC_QUIRK(0x8572); /* PFXI 32XG3 */ SWITCHTEC_QUIRK(0x8573); /* PFXI 48XG3 */ SWITCHTEC_QUIRK(0x8574); /* PFXI 64XG3 */ SWITCHTEC_QUIRK(0x8575); /* PFXI 80XG3 */ SWITCHTEC_QUIRK(0x8576); /* PFXI 96XG3 */ SWITCHTEC_QUIRK(0x4000); /* PFX 100XG4 */ SWITCHTEC_QUIRK(0x4084); /* PFX 84XG4 */ SWITCHTEC_QUIRK(0x4068); /* PFX 68XG4 */ SWITCHTEC_QUIRK(0x4052); /* PFX 52XG4 */ SWITCHTEC_QUIRK(0x4036); /* PFX 36XG4 */ SWITCHTEC_QUIRK(0x4028); /* PFX 28XG4 */ SWITCHTEC_QUIRK(0x4100); /* PSX 100XG4 */ SWITCHTEC_QUIRK(0x4184); /* PSX 84XG4 */ SWITCHTEC_QUIRK(0x4168); /* PSX 68XG4 */ SWITCHTEC_QUIRK(0x4152); /* PSX 52XG4 */ SWITCHTEC_QUIRK(0x4136); /* PSX 36XG4 */ SWITCHTEC_QUIRK(0x4128); /* PSX 28XG4 */ SWITCHTEC_QUIRK(0x4200); /* PAX 100XG4 */ SWITCHTEC_QUIRK(0x4284); /* PAX 84XG4 */ SWITCHTEC_QUIRK(0x4268); /* PAX 68XG4 */ SWITCHTEC_QUIRK(0x4252); /* PAX 52XG4 */ SWITCHTEC_QUIRK(0x4236); /* PAX 36XG4 */ SWITCHTEC_QUIRK(0x4228); /* PAX 28XG4 */ SWITCHTEC_QUIRK(0x4352); /* PFXA 52XG4 */ SWITCHTEC_QUIRK(0x4336); /* PFXA 36XG4 */ SWITCHTEC_QUIRK(0x4328); /* PFXA 28XG4 */ SWITCHTEC_QUIRK(0x4452); /* PSXA 52XG4 */ SWITCHTEC_QUIRK(0x4436); /* PSXA 36XG4 */ SWITCHTEC_QUIRK(0x4428); /* PSXA 28XG4 */ SWITCHTEC_QUIRK(0x4552); /* PAXA 52XG4 */ SWITCHTEC_QUIRK(0x4536); /* PAXA 36XG4 */ SWITCHTEC_QUIRK(0x4528); /* PAXA 28XG4 */ SWITCHTEC_QUIRK(0x5000); /* PFX 100XG5 */ SWITCHTEC_QUIRK(0x5084); /* PFX 84XG5 */ SWITCHTEC_QUIRK(0x5068); /* PFX 68XG5 */ SWITCHTEC_QUIRK(0x5052); /* PFX 52XG5 */ SWITCHTEC_QUIRK(0x5036); /* PFX 36XG5 */ SWITCHTEC_QUIRK(0x5028); /* PFX 28XG5 */ SWITCHTEC_QUIRK(0x5100); /* PSX 100XG5 */ SWITCHTEC_QUIRK(0x5184); /* PSX 84XG5 */ SWITCHTEC_QUIRK(0x5168); /* PSX 68XG5 */ SWITCHTEC_QUIRK(0x5152); /* PSX 52XG5 */ SWITCHTEC_QUIRK(0x5136); /* PSX 36XG5 */ SWITCHTEC_QUIRK(0x5128); /* PSX 28XG5 */ SWITCHTEC_QUIRK(0x5200); /* PAX 100XG5 */ SWITCHTEC_QUIRK(0x5284); /* PAX 84XG5 */ SWITCHTEC_QUIRK(0x5268); /* PAX 68XG5 */ SWITCHTEC_QUIRK(0x5252); /* PAX 52XG5 */ SWITCHTEC_QUIRK(0x5236); /* PAX 36XG5 */ SWITCHTEC_QUIRK(0x5228); /* PAX 28XG5 */ SWITCHTEC_QUIRK(0x5300); /* PFXA 100XG5 */ SWITCHTEC_QUIRK(0x5384); /* PFXA 84XG5 */ SWITCHTEC_QUIRK(0x5368); /* PFXA 68XG5 */ SWITCHTEC_QUIRK(0x5352); /* PFXA 52XG5 */ SWITCHTEC_QUIRK(0x5336); /* PFXA 36XG5 */ SWITCHTEC_QUIRK(0x5328); /* PFXA 28XG5 */ SWITCHTEC_QUIRK(0x5400); /* PSXA 100XG5 */ SWITCHTEC_QUIRK(0x5484); /* PSXA 84XG5 */ SWITCHTEC_QUIRK(0x5468); /* PSXA 68XG5 */ SWITCHTEC_QUIRK(0x5452); /* PSXA 52XG5 */ SWITCHTEC_QUIRK(0x5436); /* PSXA 36XG5 */ SWITCHTEC_QUIRK(0x5428); /* PSXA 28XG5 */ SWITCHTEC_QUIRK(0x5500); /* PAXA 100XG5 */ SWITCHTEC_QUIRK(0x5584); /* PAXA 84XG5 */ SWITCHTEC_QUIRK(0x5568); /* PAXA 68XG5 */ SWITCHTEC_QUIRK(0x5552); /* PAXA 52XG5 */ SWITCHTEC_QUIRK(0x5536); /* PAXA 36XG5 */ SWITCHTEC_QUIRK(0x5528); /* PAXA 28XG5 */ /* * The PLX NTB uses devfn proxy IDs to move TLPs between NT endpoints. * These IDs are used to forward responses to the originator on the other * side of the NTB. Alias all possible IDs to the NTB to permit access when * the IOMMU is turned on. */ static void quirk_plx_ntb_dma_alias(struct pci_dev *pdev) { pci_info(pdev, "Setting PLX NTB proxy ID aliases\n"); /* PLX NTB may use all 256 devfns */ pci_add_dma_alias(pdev, 0, 256); } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b0, quirk_plx_ntb_dma_alias); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_PLX, 0x87b1, quirk_plx_ntb_dma_alias); /* * On Lenovo Thinkpad P50 SKUs with a Nvidia Quadro M1000M, the BIOS does * not always reset the secondary Nvidia GPU between reboots if the system * is configured to use Hybrid Graphics mode. This results in the GPU * being left in whatever state it was in during the *previous* boot, which * causes spurious interrupts from the GPU, which in turn causes us to * disable the wrong IRQ and end up breaking the touchpad. Unsurprisingly, * this also completely breaks nouveau. * * Luckily, it seems a simple reset of the Nvidia GPU brings it back to a * clean state and fixes all these issues. * * When the machine is configured in Dedicated display mode, the issue * doesn't occur. Fortunately the GPU advertises NoReset+ when in this * mode, so we can detect that and avoid resetting it. */ static void quirk_reset_lenovo_thinkpad_p50_nvgpu(struct pci_dev *pdev) { void __iomem *map; int ret; if (pdev->subsystem_vendor != PCI_VENDOR_ID_LENOVO || pdev->subsystem_device != 0x222e || !pci_reset_supported(pdev)) return; if (pci_enable_device_mem(pdev)) return; /* * Based on nvkm_device_ctor() in * drivers/gpu/drm/nouveau/nvkm/engine/device/base.c */ map = pci_iomap(pdev, 0, 0x23000); if (!map) { pci_err(pdev, "Can't map MMIO space\n"); goto out_disable; } /* * Make sure the GPU looks like it's been POSTed before resetting * it. */ if (ioread32(map + 0x2240c) & 0x2) { pci_info(pdev, FW_BUG "GPU left initialized by EFI, resetting\n"); ret = pci_reset_bus(pdev); if (ret < 0) pci_err(pdev, "Failed to reset GPU: %d\n", ret); } iounmap(map); out_disable: pci_disable_device(pdev); } DECLARE_PCI_FIXUP_CLASS_FINAL(PCI_VENDOR_ID_NVIDIA, 0x13b1, PCI_CLASS_DISPLAY_VGA, 8, quirk_reset_lenovo_thinkpad_p50_nvgpu); /* * Device [1b21:2142] * When in D0, PME# doesn't get asserted when plugging USB 3.0 device. */ static void pci_fixup_no_d0_pme(struct pci_dev *dev) { pci_info(dev, "PME# does not work under D0, disabling it\n"); dev->pme_support &= ~(PCI_PM_CAP_PME_D0 >> PCI_PM_CAP_PME_SHIFT); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x2142, pci_fixup_no_d0_pme); /* * Device 12d8:0x400e [OHCI] and 12d8:0x400f [EHCI] * * These devices advertise PME# support in all power states but don't * reliably assert it. * * These devices also advertise MSI, but documentation (PI7C9X440SL.pdf) * says "The MSI Function is not implemented on this device" in chapters * 7.3.27, 7.3.29-7.3.31. */ static void pci_fixup_no_msi_no_pme(struct pci_dev *dev) { #ifdef CONFIG_PCI_MSI pci_info(dev, "MSI is not implemented on this device, disabling it\n"); dev->no_msi = 1; #endif pci_info(dev, "PME# is unreliable, disabling it\n"); dev->pme_support = 0; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400e, pci_fixup_no_msi_no_pme); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400f, pci_fixup_no_msi_no_pme); static void apex_pci_fixup_class(struct pci_dev *pdev) { pdev->class = (PCI_CLASS_SYSTEM_OTHER << 8) | pdev->class; } DECLARE_PCI_FIXUP_CLASS_HEADER(0x1ac1, 0x089a, PCI_CLASS_NOT_DEFINED, 8, apex_pci_fixup_class); /* * Pericom PI7C9X2G404/PI7C9X2G304/PI7C9X2G303 switch erratum E5 - * ACS P2P Request Redirect is not functional * * When ACS P2P Request Redirect is enabled and bandwidth is not balanced * between upstream and downstream ports, packets are queued in an internal * buffer until CPLD packet. The workaround is to use the switch in store and * forward mode. */ #define PI7C9X2Gxxx_MODE_REG 0x74 #define PI7C9X2Gxxx_STORE_FORWARD_MODE BIT(0) static void pci_fixup_pericom_acs_store_forward(struct pci_dev *pdev) { struct pci_dev *upstream; u16 val; /* Downstream ports only */ if (pci_pcie_type(pdev) != PCI_EXP_TYPE_DOWNSTREAM) return; /* Check for ACS P2P Request Redirect use */ if (!pdev->acs_cap) return; pci_read_config_word(pdev, pdev->acs_cap + PCI_ACS_CTRL, &val); if (!(val & PCI_ACS_RR)) return; upstream = pci_upstream_bridge(pdev); if (!upstream) return; pci_read_config_word(upstream, PI7C9X2Gxxx_MODE_REG, &val); if (!(val & PI7C9X2Gxxx_STORE_FORWARD_MODE)) { pci_info(upstream, "Setting PI7C9X2Gxxx store-forward mode to avoid ACS erratum\n"); pci_write_config_word(upstream, PI7C9X2Gxxx_MODE_REG, val | PI7C9X2Gxxx_STORE_FORWARD_MODE); } } /* * Apply fixup on enable and on resume, in order to apply the fix up whenever * ACS configuration changes or switch mode is reset */ DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2404, pci_fixup_pericom_acs_store_forward); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2404, pci_fixup_pericom_acs_store_forward); DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2304, pci_fixup_pericom_acs_store_forward); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2304, pci_fixup_pericom_acs_store_forward); DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_PERICOM, 0x2303, pci_fixup_pericom_acs_store_forward); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_PERICOM, 0x2303, pci_fixup_pericom_acs_store_forward); static void nvidia_ion_ahci_fixup(struct pci_dev *pdev) { pdev->dev_flags |= PCI_DEV_FLAGS_HAS_MSI_MASKING; } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, 0x0ab8, nvidia_ion_ahci_fixup); static void rom_bar_overlap_defect(struct pci_dev *dev) { pci_info(dev, "working around ROM BAR overlap defect\n"); dev->rom_bar_overlap = 1; } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1533, rom_bar_overlap_defect); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1536, rom_bar_overlap_defect); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1537, rom_bar_overlap_defect); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, 0x1538, rom_bar_overlap_defect); #ifdef CONFIG_PCIEASPM /* * Several Intel DG2 graphics devices advertise that they can only tolerate * 1us latency when transitioning from L1 to L0, which may prevent ASPM L1 * from being enabled. But in fact these devices can tolerate unlimited * latency. Override their Device Capabilities value to allow ASPM L1 to * be enabled. */ static void aspm_l1_acceptable_latency(struct pci_dev *dev) { u32 l1_lat = FIELD_GET(PCI_EXP_DEVCAP_L1, dev->devcap); if (l1_lat < 7) { dev->devcap |= FIELD_PREP(PCI_EXP_DEVCAP_L1, 7); pci_info(dev, "ASPM: overriding L1 acceptable latency from %#x to 0x7\n", l1_lat); } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f80, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f81, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f82, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f83, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f84, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f85, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f86, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f87, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x4f88, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5690, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5691, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5692, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5693, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5694, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x5695, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a0, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a1, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a2, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a3, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a4, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a5, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56a6, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56b0, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56b1, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c0, aspm_l1_acceptable_latency); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x56c1, aspm_l1_acceptable_latency); #endif #ifdef CONFIG_PCIE_DPC /* * Intel Ice Lake, Tiger Lake and Alder Lake BIOS has a bug that clears * the DPC RP PIO Log Size of the integrated Thunderbolt PCIe Root * Ports. */ static void dpc_log_size(struct pci_dev *dev) { u16 dpc, val; dpc = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC); if (!dpc) return; pci_read_config_word(dev, dpc + PCI_EXP_DPC_CAP, &val); if (!(val & PCI_EXP_DPC_CAP_RP_EXT)) return; if (FIELD_GET(PCI_EXP_DPC_RP_PIO_LOG_SIZE, val) == 0) { pci_info(dev, "Overriding RP PIO Log Size to 4\n"); dev->dpc_rp_log_size = 4; } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x461f, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x462f, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x463f, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x466e, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a1d, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a1f, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a21, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x8a23, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a23, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a25, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a27, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a29, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2b, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2d, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2f, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a31, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0xa73f, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0xa76e, dpc_log_size); #endif /* * For a PCI device with multiple downstream devices, its driver may use * a flattened device tree to describe the downstream devices. * To overlay the flattened device tree, the PCI device and all its ancestor * devices need to have device tree nodes on system base device tree. Thus, * before driver probing, it might need to add a device tree node as the final * fixup. */ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5020, of_pci_make_dev_node); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5021, of_pci_make_dev_node); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REDHAT, 0x0005, of_pci_make_dev_node); /* * Devices known to require a longer delay before first config space access * after reset recovery or resume from D3cold: * * VideoPropulsion (aka Genroco) Torrent QN16e MPEG QAM Modulator */ static void pci_fixup_d3cold_delay_1sec(struct pci_dev *pdev) { pdev->d3cold_delay = 1000; } DECLARE_PCI_FIXUP_FINAL(0x5555, 0x0004, pci_fixup_d3cold_delay_1sec); #ifdef CONFIG_PCIEAER static void pci_mask_replay_timer_timeout(struct pci_dev *pdev) { struct pci_dev *parent = pci_upstream_bridge(pdev); u32 val; if (!parent || !parent->aer_cap) return; pci_info(parent, "mask Replay Timer Timeout Correctable Errors due to %s hardware defect", pci_name(pdev)); pci_read_config_dword(parent, parent->aer_cap + PCI_ERR_COR_MASK, &val); val |= PCI_ERR_COR_REP_TIMER; pci_write_config_dword(parent, parent->aer_cap + PCI_ERR_COR_MASK, val); } DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_GLI, 0x9750, pci_mask_replay_timer_timeout); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_GLI, 0x9755, pci_mask_replay_timer_timeout); #endif
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