diff options
Diffstat (limited to 'drivers/gpu/drm/drm_pci.c')
| -rw-r--r-- | drivers/gpu/drm/drm_pci.c | 199 |
1 files changed, 100 insertions, 99 deletions
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c index 02679793c9e..020cfd93485 100644 --- a/drivers/gpu/drm/drm_pci.c +++ b/drivers/gpu/drm/drm_pci.c @@ -1,17 +1,3 @@ -/* drm_pci.h -- PCI DMA memory management wrappers for DRM -*- linux-c -*- */ -/** - * \file drm_pci.c - * \brief Functions and ioctls to manage PCI memory - * - * \warning These interfaces aren't stable yet. - * - * \todo Implement the remaining ioctl's for the PCI pools. - * \todo The wrappers here are so thin that they would be better off inlined.. - * - * \author José Fonseca <jrfonseca@tungstengraphics.com> - * \author Leif Delgass <ldelgass@retinalburn.net> - */ - /* * Copyright 2003 José Fonseca. * Copyright 2003 Leif Delgass. @@ -42,12 +28,14 @@ #include <linux/export.h> #include <drm/drmP.h> -/**********************************************************************/ -/** \name PCI memory */ -/*@{*/ - /** - * \brief Allocate a PCI consistent memory block, for DMA. + * drm_pci_alloc - Allocate a PCI consistent memory block, for DMA. + * @dev: DRM device + * @size: size of block to allocate + * @align: alignment of block + * + * Return: A handle to the allocated memory block on success or NULL on + * failure. */ drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t align) { @@ -88,8 +76,8 @@ drm_dma_handle_t *drm_pci_alloc(struct drm_device * dev, size_t size, size_t ali EXPORT_SYMBOL(drm_pci_alloc); -/** - * \brief Free a PCI consistent memory block without freeing its descriptor. +/* + * Free a PCI consistent memory block without freeing its descriptor. * * This function is for internal use in the Linux-specific DRM core code. */ @@ -111,7 +99,9 @@ void __drm_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah) } /** - * \brief Free a PCI consistent memory block + * drm_pci_free - Free a PCI consistent memory block + * @dev: DRM device + * @dmah: handle to memory block */ void drm_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah) { @@ -137,21 +127,9 @@ static int drm_get_pci_domain(struct drm_device *dev) return pci_domain_nr(dev->pdev->bus); } -static int drm_pci_get_irq(struct drm_device *dev) -{ - return dev->pdev->irq; -} - -static const char *drm_pci_get_name(struct drm_device *dev) -{ - struct pci_driver *pdriver = dev->driver->kdriver.pci; - return pdriver->name; -} - static int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master) { int len, ret; - struct pci_driver *pdriver = dev->driver->kdriver.pci; master->unique_len = 40; master->unique_size = master->unique_len; master->unique = kmalloc(master->unique_size, GFP_KERNEL); @@ -173,29 +151,16 @@ static int drm_pci_set_busid(struct drm_device *dev, struct drm_master *master) } else master->unique_len = len; - dev->devname = - kmalloc(strlen(pdriver->name) + - master->unique_len + 2, GFP_KERNEL); - - if (dev->devname == NULL) { - ret = -ENOMEM; - goto err; - } - - sprintf(dev->devname, "%s@%s", pdriver->name, - master->unique); - return 0; err: return ret; } -static int drm_pci_set_unique(struct drm_device *dev, - struct drm_master *master, - struct drm_unique *u) +int drm_pci_set_unique(struct drm_device *dev, + struct drm_master *master, + struct drm_unique *u) { int domain, bus, slot, func, ret; - const char *bus_name; master->unique_len = u->unique_len; master->unique_size = u->unique_len + 1; @@ -212,17 +177,6 @@ static int drm_pci_set_unique(struct drm_device *dev, master->unique[master->unique_len] = '\0'; - bus_name = dev->driver->bus->get_name(dev); - dev->devname = kmalloc(strlen(bus_name) + - strlen(master->unique) + 2, GFP_KERNEL); - if (!dev->devname) { - ret = -ENOMEM; - goto err; - } - - sprintf(dev->devname, "%s@%s", bus_name, - master->unique); - /* Return error if the busid submitted doesn't match the device's actual * busid. */ @@ -247,7 +201,6 @@ err: return ret; } - static int drm_pci_irq_by_busid(struct drm_device *dev, struct drm_irq_busid *p) { if ((p->busnum >> 8) != drm_get_pci_domain(dev) || @@ -262,16 +215,41 @@ static int drm_pci_irq_by_busid(struct drm_device *dev, struct drm_irq_busid *p) return 0; } -static int drm_pci_agp_init(struct drm_device *dev) +/** + * drm_irq_by_busid - Get interrupt from bus ID + * @dev: DRM device + * @data: IOCTL parameter pointing to a drm_irq_busid structure + * @file_priv: DRM file private. + * + * Finds the PCI device with the specified bus id and gets its IRQ number. + * This IOCTL is deprecated, and will now return EINVAL for any busid not equal + * to that of the device that this DRM instance attached to. + * + * Return: 0 on success or a negative error code on failure. + */ +int drm_irq_by_busid(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_irq_busid *p = data; + + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return -EINVAL; + + /* UMS was only ever support on PCI devices. */ + if (WARN_ON(!dev->pdev)) + return -EINVAL; + + if (!drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) + return -EINVAL; + + return drm_pci_irq_by_busid(dev, p); +} + +static void drm_pci_agp_init(struct drm_device *dev) { - if (drm_core_has_AGP(dev)) { + if (drm_core_check_feature(dev, DRIVER_USE_AGP)) { if (drm_pci_device_is_agp(dev)) dev->agp = drm_agp_init(dev); - if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) - && (dev->agp == NULL)) { - DRM_ERROR("Cannot initialize the agpgart module.\n"); - return -EINVAL; - } if (dev->agp) { dev->agp->agp_mtrr = arch_phys_wc_add( dev->agp->agp_info.aper_base, @@ -279,40 +257,33 @@ static int drm_pci_agp_init(struct drm_device *dev) 1024 * 1024); } } - return 0; } -static void drm_pci_agp_destroy(struct drm_device *dev) +void drm_pci_agp_destroy(struct drm_device *dev) { - if (drm_core_has_AGP(dev) && dev->agp) { + if (dev->agp) { arch_phys_wc_del(dev->agp->agp_mtrr); drm_agp_clear(dev); - drm_agp_destroy(dev->agp); + kfree(dev->agp); dev->agp = NULL; } } static struct drm_bus drm_pci_bus = { - .bus_type = DRIVER_BUS_PCI, - .get_irq = drm_pci_get_irq, - .get_name = drm_pci_get_name, .set_busid = drm_pci_set_busid, - .set_unique = drm_pci_set_unique, - .irq_by_busid = drm_pci_irq_by_busid, - .agp_init = drm_pci_agp_init, - .agp_destroy = drm_pci_agp_destroy, }; /** - * Register. - * - * \param pdev - PCI device structure - * \param ent entry from the PCI ID table with device type flags - * \return zero on success or a negative number on failure. + * drm_get_pci_dev - Register a PCI device with the DRM subsystem + * @pdev: PCI device + * @ent: entry from the PCI ID table that matches @pdev + * @driver: DRM device driver * * Attempt to gets inter module "drm" information. If we are first * then register the character device and inter module information. * Try and register, if we fail to register, backout previous work. + * + * Return: 0 on success or a negative error code on failure. */ int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent, struct drm_driver *driver) @@ -338,34 +309,41 @@ int drm_get_pci_dev(struct pci_dev *pdev, const struct pci_device_id *ent, if (drm_core_check_feature(dev, DRIVER_MODESET)) pci_set_drvdata(pdev, dev); + drm_pci_agp_init(dev); + ret = drm_dev_register(dev, ent->driver_data); if (ret) - goto err_pci; + goto err_agp; DRM_INFO("Initialized %s %d.%d.%d %s for %s on minor %d\n", driver->name, driver->major, driver->minor, driver->patchlevel, driver->date, pci_name(pdev), dev->primary->index); + /* No locking needed since shadow-attach is single-threaded since it may + * only be called from the per-driver module init hook. */ + if (!drm_core_check_feature(dev, DRIVER_MODESET)) + list_add_tail(&dev->legacy_dev_list, &driver->legacy_dev_list); + return 0; -err_pci: +err_agp: + drm_pci_agp_destroy(dev); pci_disable_device(pdev); err_free: - drm_dev_free(dev); + drm_dev_unref(dev); return ret; } EXPORT_SYMBOL(drm_get_pci_dev); /** - * PCI device initialization. Called direct from modules at load time. + * drm_pci_init - Register matching PCI devices with the DRM subsystem + * @driver: DRM device driver + * @pdriver: PCI device driver * - * \return zero on success or a negative number on failure. + * Initializes a drm_device structures, registering the stubs and initializing + * the AGP device. * - * Initializes a drm_device structures,registering the - * stubs and initializing the AGP device. - * - * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and - * after the initialization for driver customization. + * Return: 0 on success or a negative error code on failure. */ int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver) { @@ -375,14 +353,13 @@ int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver) DRM_DEBUG("\n"); - INIT_LIST_HEAD(&driver->device_list); - driver->kdriver.pci = pdriver; driver->bus = &drm_pci_bus; if (driver->driver_features & DRIVER_MODESET) return pci_register_driver(pdriver); /* If not using KMS, fall back to stealth mode manual scanning. */ + INIT_LIST_HEAD(&driver->legacy_dev_list); for (i = 0; pdriver->id_table[i].vendor != 0; i++) { pid = &pdriver->id_table[i]; @@ -452,11 +429,32 @@ int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver) return -1; } +void drm_pci_agp_destroy(struct drm_device *dev) {} + +int drm_irq_by_busid(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + return -EINVAL; +} + +int drm_pci_set_unique(struct drm_device *dev, + struct drm_master *master, + struct drm_unique *u) +{ + return -EINVAL; +} #endif EXPORT_SYMBOL(drm_pci_init); -/*@}*/ +/** + * drm_pci_exit - Unregister matching PCI devices from the DRM subsystem + * @driver: DRM device driver + * @pdriver: PCI device driver + * + * Unregisters one or more devices matched by a PCI driver from the DRM + * subsystem. + */ void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver) { struct drm_device *dev, *tmp; @@ -465,8 +463,11 @@ void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver) if (driver->driver_features & DRIVER_MODESET) { pci_unregister_driver(pdriver); } else { - list_for_each_entry_safe(dev, tmp, &driver->device_list, driver_item) + list_for_each_entry_safe(dev, tmp, &driver->legacy_dev_list, + legacy_dev_list) { + list_del(&dev->legacy_dev_list); drm_put_dev(dev); + } } DRM_INFO("Module unloaded\n"); } |