Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Jan Engelhardt | 96de0e2 | 2007-10-19 23:21:04 +0200 | [diff] [blame] | 2 | * Copyright 2003 José Fonseca. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * Copyright 2003 Leif Delgass. |
| 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 7 | * copy of this software and associated documentation files (the "Software"), |
| 8 | * to deal in the Software without restriction, including without limitation |
| 9 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 10 | * and/or sell copies of the Software, and to permit persons to whom the |
| 11 | * Software is furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice (including the next |
| 14 | * paragraph) shall be included in all copies or substantial portions of the |
| 15 | * Software. |
| 16 | * |
| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 20 | * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 21 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| 22 | * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #include <linux/pci.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 26 | #include <linux/slab.h> |
Dave Airlie | 195b3a2 | 2006-04-05 18:12:18 +1000 | [diff] [blame] | 27 | #include <linux/dma-mapping.h> |
Paul Gortmaker | 2d1a8a4 | 2011-08-30 18:16:33 -0400 | [diff] [blame] | 28 | #include <linux/export.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 29 | #include <drm/drmP.h> |
Ville Syrjälä | 43fc884 | 2015-03-13 14:51:25 +0200 | [diff] [blame] | 30 | #include "drm_internal.h" |
Daniel Vetter | ba8286f | 2014-09-11 07:43:25 +0200 | [diff] [blame] | 31 | #include "drm_legacy.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | /** |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 34 | * drm_pci_alloc - Allocate a PCI consistent memory block, for DMA. |
| 35 | * @dev: DRM device |
| 36 | * @size: size of block to allocate |
| 37 | * @align: alignment of block |
| 38 | * |
| 39 | * Return: A handle to the allocated memory block on success or NULL on |
| 40 | * failure. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | */ |
Zhenyu Wang | e6be8d9 | 2010-01-05 11:25:05 +0800 | [diff] [blame] | 42 | drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t align) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | { |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 44 | drm_dma_handle_t *dmah; |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 45 | unsigned long addr; |
| 46 | size_t sz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | /* pci_alloc_consistent only guarantees alignment to the smallest |
| 49 | * PAGE_SIZE order which is greater than or equal to the requested size. |
| 50 | * Return NULL here for now to make sure nobody tries for larger alignment |
| 51 | */ |
| 52 | if (align > size) |
| 53 | return NULL; |
| 54 | |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 55 | dmah = kmalloc(sizeof(drm_dma_handle_t), GFP_KERNEL); |
| 56 | if (!dmah) |
| 57 | return NULL; |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 58 | |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 59 | dmah->size = size; |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 60 | dmah->vaddr = dma_alloc_coherent(&dev->pdev->dev, size, &dmah->busaddr, GFP_KERNEL | __GFP_COMP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 62 | if (dmah->vaddr == NULL) { |
| 63 | kfree(dmah); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | return NULL; |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 65 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 67 | memset(dmah->vaddr, 0, size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 69 | /* XXX - Is virt_to_page() legal for consistent mem? */ |
| 70 | /* Reserve */ |
| 71 | for (addr = (unsigned long)dmah->vaddr, sz = size; |
| 72 | sz > 0; addr += PAGE_SIZE, sz -= PAGE_SIZE) { |
Ben Hutchings | e1e7853 | 2013-10-27 21:52:39 +0000 | [diff] [blame] | 73 | SetPageReserved(virt_to_page((void *)addr)); |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 74 | } |
| 75 | |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 76 | return dmah; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 78 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | EXPORT_SYMBOL(drm_pci_alloc); |
| 80 | |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 81 | /* |
| 82 | * Free a PCI consistent memory block without freeing its descriptor. |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 83 | * |
| 84 | * This function is for internal use in the Linux-specific DRM core code. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | */ |
Daniel Vetter | 1c96e84 | 2014-09-10 12:43:51 +0200 | [diff] [blame] | 86 | void __drm_legacy_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | { |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 88 | unsigned long addr; |
| 89 | size_t sz; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | |
Eric Anholt | 9a298b2 | 2009-03-24 12:23:04 -0700 | [diff] [blame] | 91 | if (dmah->vaddr) { |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 92 | /* XXX - Is virt_to_page() legal for consistent mem? */ |
| 93 | /* Unreserve */ |
| 94 | for (addr = (unsigned long)dmah->vaddr, sz = dmah->size; |
| 95 | sz > 0; addr += PAGE_SIZE, sz -= PAGE_SIZE) { |
Ben Hutchings | e1e7853 | 2013-10-27 21:52:39 +0000 | [diff] [blame] | 96 | ClearPageReserved(virt_to_page((void *)addr)); |
Dave Airlie | ddf19b9 | 2006-03-19 18:56:12 +1100 | [diff] [blame] | 97 | } |
| 98 | dma_free_coherent(&dev->pdev->dev, dmah->size, dmah->vaddr, |
| 99 | dmah->busaddr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | } |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 102 | |
| 103 | /** |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 104 | * drm_pci_free - Free a PCI consistent memory block |
| 105 | * @dev: DRM device |
| 106 | * @dmah: handle to memory block |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 107 | */ |
Dave Airlie | 84b1fd1 | 2007-07-11 15:53:27 +1000 | [diff] [blame] | 108 | void drm_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah) |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 109 | { |
Daniel Vetter | 1c96e84 | 2014-09-10 12:43:51 +0200 | [diff] [blame] | 110 | __drm_legacy_pci_free(dev, dmah); |
Dave Airlie | 9c8da5e | 2005-07-10 15:38:56 +1000 | [diff] [blame] | 111 | kfree(dmah); |
| 112 | } |
Dave Airlie | b5e89ed | 2005-09-25 14:28:13 +1000 | [diff] [blame] | 113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | EXPORT_SYMBOL(drm_pci_free); |
| 115 | |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 116 | #ifdef CONFIG_PCI |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 117 | |
| 118 | static int drm_get_pci_domain(struct drm_device *dev) |
| 119 | { |
| 120 | #ifndef __alpha__ |
| 121 | /* For historical reasons, drm_get_pci_domain() is busticated |
| 122 | * on most archs and has to remain so for userspace interface |
| 123 | * < 1.4, except on alpha which was right from the beginning |
| 124 | */ |
| 125 | if (dev->if_version < 0x10004) |
| 126 | return 0; |
| 127 | #endif /* __alpha__ */ |
| 128 | |
| 129 | return pci_domain_nr(dev->pdev->bus); |
| 130 | } |
| 131 | |
David Herrmann | 915b4d1 | 2014-08-29 12:12:43 +0200 | [diff] [blame] | 132 | int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master) |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 133 | { |
David Herrmann | d0a3916 | 2014-08-29 12:12:41 +0200 | [diff] [blame] | 134 | master->unique = kasprintf(GFP_KERNEL, "pci:%04x:%02x:%02x.%d", |
| 135 | drm_get_pci_domain(dev), |
| 136 | dev->pdev->bus->number, |
| 137 | PCI_SLOT(dev->pdev->devfn), |
| 138 | PCI_FUNC(dev->pdev->devfn)); |
| 139 | if (!master->unique) |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 140 | return -ENOMEM; |
| 141 | |
David Herrmann | d0a3916 | 2014-08-29 12:12:41 +0200 | [diff] [blame] | 142 | master->unique_len = strlen(master->unique); |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 143 | return 0; |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 144 | } |
David Herrmann | 915b4d1 | 2014-08-29 12:12:43 +0200 | [diff] [blame] | 145 | EXPORT_SYMBOL(drm_pci_set_busid); |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 146 | |
Wolfram Sang | 45e97ab | 2011-06-15 11:26:47 +0200 | [diff] [blame] | 147 | static int drm_pci_irq_by_busid(struct drm_device *dev, struct drm_irq_busid *p) |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 148 | { |
| 149 | if ((p->busnum >> 8) != drm_get_pci_domain(dev) || |
| 150 | (p->busnum & 0xff) != dev->pdev->bus->number || |
| 151 | p->devnum != PCI_SLOT(dev->pdev->devfn) || p->funcnum != PCI_FUNC(dev->pdev->devfn)) |
| 152 | return -EINVAL; |
| 153 | |
| 154 | p->irq = dev->pdev->irq; |
| 155 | |
| 156 | DRM_DEBUG("%d:%d:%d => IRQ %d\n", p->busnum, p->devnum, p->funcnum, |
| 157 | p->irq); |
| 158 | return 0; |
| 159 | } |
| 160 | |
Daniel Vetter | eaaf8f0 | 2013-08-28 15:19:23 +0200 | [diff] [blame] | 161 | /** |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 162 | * drm_irq_by_busid - Get interrupt from bus ID |
| 163 | * @dev: DRM device |
| 164 | * @data: IOCTL parameter pointing to a drm_irq_busid structure |
| 165 | * @file_priv: DRM file private. |
Daniel Vetter | eaaf8f0 | 2013-08-28 15:19:23 +0200 | [diff] [blame] | 166 | * |
| 167 | * Finds the PCI device with the specified bus id and gets its IRQ number. |
| 168 | * This IOCTL is deprecated, and will now return EINVAL for any busid not equal |
| 169 | * to that of the device that this DRM instance attached to. |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 170 | * |
| 171 | * Return: 0 on success or a negative error code on failure. |
Daniel Vetter | eaaf8f0 | 2013-08-28 15:19:23 +0200 | [diff] [blame] | 172 | */ |
| 173 | int drm_irq_by_busid(struct drm_device *dev, void *data, |
| 174 | struct drm_file *file_priv) |
| 175 | { |
| 176 | struct drm_irq_busid *p = data; |
| 177 | |
Daniel Vetter | fa53864 | 2016-08-03 21:11:10 +0200 | [diff] [blame] | 178 | if (!drm_core_check_feature(dev, DRIVER_LEGACY)) |
Daniel Vetter | eaaf8f0 | 2013-08-28 15:19:23 +0200 | [diff] [blame] | 179 | return -EINVAL; |
| 180 | |
| 181 | /* UMS was only ever support on PCI devices. */ |
| 182 | if (WARN_ON(!dev->pdev)) |
| 183 | return -EINVAL; |
| 184 | |
| 185 | if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) |
| 186 | return -EINVAL; |
| 187 | |
| 188 | return drm_pci_irq_by_busid(dev, p); |
| 189 | } |
| 190 | |
Daniel Vetter | 8da79cc | 2013-12-11 11:34:34 +0100 | [diff] [blame] | 191 | static void drm_pci_agp_init(struct drm_device *dev) |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 192 | { |
Daniel Vetter | d990675 | 2013-12-11 11:34:35 +0100 | [diff] [blame] | 193 | if (drm_core_check_feature(dev, DRIVER_USE_AGP)) { |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 194 | if (drm_pci_device_is_agp(dev)) |
| 195 | dev->agp = drm_agp_init(dev); |
Daniel Vetter | 2818564 | 2013-08-08 15:41:27 +0200 | [diff] [blame] | 196 | if (dev->agp) { |
| 197 | dev->agp->agp_mtrr = arch_phys_wc_add( |
| 198 | dev->agp->agp_info.aper_base, |
| 199 | dev->agp->agp_info.aper_size * |
| 200 | 1024 * 1024); |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 201 | } |
| 202 | } |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 203 | } |
| 204 | |
Daniel Vetter | 4efafeb | 2013-12-11 11:34:38 +0100 | [diff] [blame] | 205 | void drm_pci_agp_destroy(struct drm_device *dev) |
David Herrmann | 28ec711 | 2013-07-27 16:37:00 +0200 | [diff] [blame] | 206 | { |
Daniel Vetter | d990675 | 2013-12-11 11:34:35 +0100 | [diff] [blame] | 207 | if (dev->agp) { |
Daniel Vetter | 2818564 | 2013-08-08 15:41:27 +0200 | [diff] [blame] | 208 | arch_phys_wc_del(dev->agp->agp_mtrr); |
Daniel Vetter | 366884b | 2016-04-26 19:29:34 +0200 | [diff] [blame] | 209 | drm_legacy_agp_clear(dev); |
Daniel Vetter | d6e4b28b | 2013-12-11 11:34:37 +0100 | [diff] [blame] | 210 | kfree(dev->agp); |
David Herrmann | 28ec711 | 2013-07-27 16:37:00 +0200 | [diff] [blame] | 211 | dev->agp = NULL; |
| 212 | } |
| 213 | } |
| 214 | |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 215 | /** |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 216 | * drm_get_pci_dev - Register a PCI device with the DRM subsystem |
| 217 | * @pdev: PCI device |
| 218 | * @ent: entry from the PCI ID table that matches @pdev |
| 219 | * @driver: DRM device driver |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 220 | * |
| 221 | * Attempt to gets inter module "drm" information. If we are first |
| 222 | * then register the character device and inter module information. |
| 223 | * Try and register, if we fail to register, backout previous work. |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 224 | * |
Daniel Vetter | 6e3f797 | 2015-09-28 21:46:35 +0200 | [diff] [blame] | 225 | * NOTE: This function is deprecated, please use drm_dev_alloc() and |
| 226 | * drm_dev_register() instead and remove your ->load() callback. |
| 227 | * |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 228 | * Return: 0 on success or a negative error code on failure. |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 229 | */ |
| 230 | int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent, |
| 231 | struct drm_driver *driver) |
| 232 | { |
| 233 | struct drm_device *dev; |
| 234 | int ret; |
| 235 | |
| 236 | DRM_DEBUG("\n"); |
| 237 | |
David Herrmann | 1bb7253 | 2013-10-02 11:23:34 +0200 | [diff] [blame] | 238 | dev = drm_dev_alloc(driver, &pdev->dev); |
Tom Gundersen | 0f28860 | 2016-09-21 16:59:19 +0200 | [diff] [blame^] | 239 | if (IS_ERR(dev)) |
| 240 | return PTR_ERR(dev); |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 241 | |
| 242 | ret = pci_enable_device(pdev); |
| 243 | if (ret) |
David Herrmann | c22f0ac | 2013-10-02 11:23:35 +0200 | [diff] [blame] | 244 | goto err_free; |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 245 | |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 246 | dev->pdev = pdev; |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 247 | #ifdef __alpha__ |
| 248 | dev->hose = pdev->sysdata; |
| 249 | #endif |
| 250 | |
David Herrmann | c22f0ac | 2013-10-02 11:23:35 +0200 | [diff] [blame] | 251 | if (drm_core_check_feature(dev, DRIVER_MODESET)) |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 252 | pci_set_drvdata(pdev, dev); |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 253 | |
Daniel Vetter | 2c695fa | 2013-12-11 11:34:36 +0100 | [diff] [blame] | 254 | drm_pci_agp_init(dev); |
Daniel Vetter | 2c695fa | 2013-12-11 11:34:36 +0100 | [diff] [blame] | 255 | |
David Herrmann | c22f0ac | 2013-10-02 11:23:35 +0200 | [diff] [blame] | 256 | ret = drm_dev_register(dev, ent->driver_data); |
| 257 | if (ret) |
Daniel Vetter | 2c695fa | 2013-12-11 11:34:36 +0100 | [diff] [blame] | 258 | goto err_agp; |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 259 | |
| 260 | DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n", |
| 261 | driver->name, driver->major, driver->minor, driver->patchlevel, |
| 262 | driver->date, pci_name(pdev), dev->primary->index); |
| 263 | |
Daniel Vetter | b3f2333 | 2013-12-11 11:34:31 +0100 | [diff] [blame] | 264 | /* No locking needed since shadow-attach is single-threaded since it may |
| 265 | * only be called from the per-driver module init hook. */ |
Daniel Vetter | fa53864 | 2016-08-03 21:11:10 +0200 | [diff] [blame] | 266 | if (drm_core_check_feature(dev, DRIVER_LEGACY)) |
Daniel Vetter | b3f2333 | 2013-12-11 11:34:31 +0100 | [diff] [blame] | 267 | list_add_tail(&dev->legacy_dev_list, &driver->legacy_dev_list); |
| 268 | |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 269 | return 0; |
| 270 | |
Daniel Vetter | 2c695fa | 2013-12-11 11:34:36 +0100 | [diff] [blame] | 271 | err_agp: |
Daniel Vetter | 2c695fa | 2013-12-11 11:34:36 +0100 | [diff] [blame] | 272 | drm_pci_agp_destroy(dev); |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 273 | pci_disable_device(pdev); |
David Herrmann | c22f0ac | 2013-10-02 11:23:35 +0200 | [diff] [blame] | 274 | err_free: |
David Herrmann | 099d1c2 | 2014-01-29 10:21:36 +0100 | [diff] [blame] | 275 | drm_dev_unref(dev); |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 276 | return ret; |
| 277 | } |
| 278 | EXPORT_SYMBOL(drm_get_pci_dev); |
| 279 | |
| 280 | /** |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 281 | * drm_pci_init - Register matching PCI devices with the DRM subsystem |
| 282 | * @driver: DRM device driver |
| 283 | * @pdriver: PCI device driver |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 284 | * |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 285 | * Initializes a drm_device structures, registering the stubs and initializing |
| 286 | * the AGP device. |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 287 | * |
Daniel Vetter | 6e3f797 | 2015-09-28 21:46:35 +0200 | [diff] [blame] | 288 | * NOTE: This function is deprecated. Modern modesetting drm drivers should use |
| 289 | * pci_register_driver() directly, this function only provides shadow-binding |
| 290 | * support for old legacy drivers on top of that core pci function. |
| 291 | * |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 292 | * Return: 0 on success or a negative error code on failure. |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 293 | */ |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 294 | int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver) |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 295 | { |
| 296 | struct pci_dev *pdev = NULL; |
| 297 | const struct pci_device_id *pid; |
| 298 | int i; |
| 299 | |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 300 | DRM_DEBUG("\n"); |
| 301 | |
Daniel Vetter | fa53864 | 2016-08-03 21:11:10 +0200 | [diff] [blame] | 302 | if (!(driver->driver_features & DRIVER_LEGACY)) |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 303 | return pci_register_driver(pdriver); |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 304 | |
| 305 | /* If not using KMS, fall back to stealth mode manual scanning. */ |
Daniel Vetter | b3f2333 | 2013-12-11 11:34:31 +0100 | [diff] [blame] | 306 | INIT_LIST_HEAD(&driver->legacy_dev_list); |
Dave Airlie | 8410ea3 | 2010-12-15 03:16:38 +1000 | [diff] [blame] | 307 | for (i = 0; pdriver->id_table[i].vendor != 0; i++) { |
| 308 | pid = &pdriver->id_table[i]; |
Jordan Crouse | dcdb167 | 2010-05-27 13:40:25 -0600 | [diff] [blame] | 309 | |
| 310 | /* Loop around setting up a DRM device for each PCI device |
| 311 | * matching our ID and device class. If we had the internal |
| 312 | * function that pci_get_subsys and pci_get_class used, we'd |
| 313 | * be able to just pass pid in instead of doing a two-stage |
| 314 | * thing. |
| 315 | */ |
| 316 | pdev = NULL; |
| 317 | while ((pdev = |
| 318 | pci_get_subsys(pid->vendor, pid->device, pid->subvendor, |
| 319 | pid->subdevice, pdev)) != NULL) { |
| 320 | if ((pdev->class & pid->class_mask) != pid->class) |
| 321 | continue; |
| 322 | |
| 323 | /* stealth mode requires a manual probe */ |
| 324 | pci_dev_get(pdev); |
| 325 | drm_get_pci_dev(pdev, pid, driver); |
| 326 | } |
| 327 | } |
| 328 | return 0; |
| 329 | } |
| 330 | |
Dave Airlie | f429778 | 2012-06-27 08:35:53 +0100 | [diff] [blame] | 331 | int drm_pcie_get_speed_cap_mask(struct drm_device *dev, u32 *mask) |
| 332 | { |
| 333 | struct pci_dev *root; |
Bjorn Helgaas | dd66cc2 | 2013-01-04 19:10:42 +0000 | [diff] [blame] | 334 | u32 lnkcap, lnkcap2; |
Dave Airlie | f429778 | 2012-06-27 08:35:53 +0100 | [diff] [blame] | 335 | |
| 336 | *mask = 0; |
| 337 | if (!dev->pdev) |
| 338 | return -EINVAL; |
| 339 | |
Dave Airlie | f429778 | 2012-06-27 08:35:53 +0100 | [diff] [blame] | 340 | root = dev->pdev->bus->self; |
| 341 | |
Dave Airlie | f429778 | 2012-06-27 08:35:53 +0100 | [diff] [blame] | 342 | /* we've been informed via and serverworks don't make the cut */ |
| 343 | if (root->vendor == PCI_VENDOR_ID_VIA || |
| 344 | root->vendor == PCI_VENDOR_ID_SERVERWORKS) |
| 345 | return -EINVAL; |
| 346 | |
Bjorn Helgaas | dd66cc2 | 2013-01-04 19:10:42 +0000 | [diff] [blame] | 347 | pcie_capability_read_dword(root, PCI_EXP_LNKCAP, &lnkcap); |
| 348 | pcie_capability_read_dword(root, PCI_EXP_LNKCAP2, &lnkcap2); |
Dave Airlie | f429778 | 2012-06-27 08:35:53 +0100 | [diff] [blame] | 349 | |
Bjorn Helgaas | dd66cc2 | 2013-01-04 19:10:42 +0000 | [diff] [blame] | 350 | if (lnkcap2) { /* PCIe r3.0-compliant */ |
Dave Airlie | f429778 | 2012-06-27 08:35:53 +0100 | [diff] [blame] | 351 | if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_2_5GB) |
| 352 | *mask |= DRM_PCIE_SPEED_25; |
| 353 | if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_5_0GB) |
| 354 | *mask |= DRM_PCIE_SPEED_50; |
| 355 | if (lnkcap2 & PCI_EXP_LNKCAP2_SLS_8_0GB) |
| 356 | *mask |= DRM_PCIE_SPEED_80; |
Bjorn Helgaas | dd66cc2 | 2013-01-04 19:10:42 +0000 | [diff] [blame] | 357 | } else { /* pre-r3.0 */ |
Bjorn Helgaas | 9fe0423 | 2013-01-04 19:10:32 +0000 | [diff] [blame] | 358 | if (lnkcap & PCI_EXP_LNKCAP_SLS_2_5GB) |
Dave Airlie | f429778 | 2012-06-27 08:35:53 +0100 | [diff] [blame] | 359 | *mask |= DRM_PCIE_SPEED_25; |
Bjorn Helgaas | 9fe0423 | 2013-01-04 19:10:32 +0000 | [diff] [blame] | 360 | if (lnkcap & PCI_EXP_LNKCAP_SLS_5_0GB) |
Bjorn Helgaas | f8acf6f | 2013-01-04 19:10:37 +0000 | [diff] [blame] | 361 | *mask |= (DRM_PCIE_SPEED_25 | DRM_PCIE_SPEED_50); |
Dave Airlie | f429778 | 2012-06-27 08:35:53 +0100 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | DRM_INFO("probing gen 2 caps for device %x:%x = %x/%x\n", root->vendor, root->device, lnkcap, lnkcap2); |
| 365 | return 0; |
| 366 | } |
| 367 | EXPORT_SYMBOL(drm_pcie_get_speed_cap_mask); |
Bjorn Helgaas | 93711d8 | 2013-02-08 15:27:01 -0700 | [diff] [blame] | 368 | |
Alex Deucher | 60d8edd | 2015-11-11 23:14:39 -0500 | [diff] [blame] | 369 | int drm_pcie_get_max_link_width(struct drm_device *dev, u32 *mlw) |
| 370 | { |
| 371 | struct pci_dev *root; |
| 372 | u32 lnkcap; |
| 373 | |
| 374 | *mlw = 0; |
| 375 | if (!dev->pdev) |
| 376 | return -EINVAL; |
| 377 | |
| 378 | root = dev->pdev->bus->self; |
| 379 | |
| 380 | pcie_capability_read_dword(root, PCI_EXP_LNKCAP, &lnkcap); |
| 381 | |
| 382 | *mlw = (lnkcap & PCI_EXP_LNKCAP_MLW) >> 4; |
| 383 | |
| 384 | DRM_INFO("probing mlw for device %x:%x = %x\n", root->vendor, root->device, lnkcap); |
| 385 | return 0; |
| 386 | } |
| 387 | EXPORT_SYMBOL(drm_pcie_get_max_link_width); |
| 388 | |
Bjorn Helgaas | 93711d8 | 2013-02-08 15:27:01 -0700 | [diff] [blame] | 389 | #else |
| 390 | |
| 391 | int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver) |
| 392 | { |
| 393 | return -1; |
| 394 | } |
| 395 | |
Daniel Vetter | 4efafeb | 2013-12-11 11:34:38 +0100 | [diff] [blame] | 396 | void drm_pci_agp_destroy(struct drm_device *dev) {} |
Daniel Vetter | eaaf8f0 | 2013-08-28 15:19:23 +0200 | [diff] [blame] | 397 | |
| 398 | int drm_irq_by_busid(struct drm_device *dev, void *data, |
| 399 | struct drm_file *file_priv) |
| 400 | { |
| 401 | return -EINVAL; |
| 402 | } |
Bjorn Helgaas | 93711d8 | 2013-02-08 15:27:01 -0700 | [diff] [blame] | 403 | #endif |
| 404 | |
| 405 | EXPORT_SYMBOL(drm_pci_init); |
| 406 | |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 407 | /** |
| 408 | * drm_pci_exit - Unregister matching PCI devices from the DRM subsystem |
| 409 | * @driver: DRM device driver |
| 410 | * @pdriver: PCI device driver |
| 411 | * |
| 412 | * Unregisters one or more devices matched by a PCI driver from the DRM |
| 413 | * subsystem. |
Daniel Vetter | 6e3f797 | 2015-09-28 21:46:35 +0200 | [diff] [blame] | 414 | * |
| 415 | * NOTE: This function is deprecated. Modern modesetting drm drivers should use |
| 416 | * pci_unregister_driver() directly, this function only provides shadow-binding |
| 417 | * support for old legacy drivers on top of that core pci function. |
Thierry Reding | c6a1af8a | 2014-05-19 13:39:07 +0200 | [diff] [blame] | 418 | */ |
Bjorn Helgaas | 93711d8 | 2013-02-08 15:27:01 -0700 | [diff] [blame] | 419 | void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver) |
| 420 | { |
| 421 | struct drm_device *dev, *tmp; |
| 422 | DRM_DEBUG("\n"); |
| 423 | |
Daniel Vetter | fa53864 | 2016-08-03 21:11:10 +0200 | [diff] [blame] | 424 | if (!(driver->driver_features & DRIVER_LEGACY)) { |
Bjorn Helgaas | 93711d8 | 2013-02-08 15:27:01 -0700 | [diff] [blame] | 425 | pci_unregister_driver(pdriver); |
| 426 | } else { |
Daniel Vetter | b3f2333 | 2013-12-11 11:34:31 +0100 | [diff] [blame] | 427 | list_for_each_entry_safe(dev, tmp, &driver->legacy_dev_list, |
| 428 | legacy_dev_list) { |
Daniel Vetter | b3f2333 | 2013-12-11 11:34:31 +0100 | [diff] [blame] | 429 | list_del(&dev->legacy_dev_list); |
Daniel Vetter | c94adc4 | 2014-01-30 17:58:38 +0100 | [diff] [blame] | 430 | drm_put_dev(dev); |
Daniel Vetter | b3f2333 | 2013-12-11 11:34:31 +0100 | [diff] [blame] | 431 | } |
Bjorn Helgaas | 93711d8 | 2013-02-08 15:27:01 -0700 | [diff] [blame] | 432 | } |
| 433 | DRM_INFO("Module unloaded\n"); |
| 434 | } |
| 435 | EXPORT_SYMBOL(drm_pci_exit); |