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author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-17 09:11:39 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-17 09:11:39 -0700 |
commit | 40c7f2112ce18fa5eb6dc209c50dd0f046790191 (patch) | |
tree | 2da6636f3a1d005902d3f2afb533cb6acafce606 /drivers/gpu/drm/drm_pci.c | |
parent | b04d0a90908cdb733e490486287e1ba8c568ffb0 (diff) | |
parent | c87a8d8dcd2587c203f3dd8a3c5c15d1e128ec0d (diff) | |
download | linux-40c7f2112ce18fa5eb6dc209c50dd0f046790191.tar.bz2 |
Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (177 commits)
drm/radeon: fixup refcounts in radeon dumb create ioctl.
drm: radeon: *_cs_packet_parse_vline() cleanup
radeon: merge list_del()/list_add_tail() to list_move_tail()
drm: Retry i2c transfer of EDID block after failure
drm/radeon/kms: fix typo in atom overscan setup
drm: Hold the mode mutex whilst probing for sysfs status
drm/nouveau: fix __nouveau_fence_wait performance
drm/nv40: attempt to reserve just enough vram for all 32 channels
drm/nv50: check for vm traps on every gr irq
drm/nv50: decode vm faults some more
drm/nouveau: add nouveau_enum_find() util function
drm/nouveau: properly handle pushbuffer check failures
drm/nvc0: remove vm hack forcing large/small pages to not share a PDE
drm/i915: disable opregion lid detection for now.
drm/i915: Only wait on a pending flip if we intend to write to the buffer
drm/i915/dp: Sanity check eDP existence
drm: add cap bit to denote if dumb ioctl is available or not.
drm/core: add ioctl to query device/driver capabilities
drm/radeon/kms: allow max clock of 340 Mhz on hdmi 1.3+
drm/radeon/kms: add cayman pci ids
...
Diffstat (limited to 'drivers/gpu/drm/drm_pci.c')
-rw-r--r-- | drivers/gpu/drm/drm_pci.c | 205 |
1 files changed, 199 insertions, 6 deletions
diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c index f5bd9e590c80..e1aee4f6a7c6 100644 --- a/drivers/gpu/drm/drm_pci.c +++ b/drivers/gpu/drm/drm_pci.c @@ -125,6 +125,176 @@ void drm_pci_free(struct drm_device * dev, drm_dma_handle_t * dmah) EXPORT_SYMBOL(drm_pci_free); #ifdef CONFIG_PCI + +static int drm_get_pci_domain(struct drm_device *dev) +{ +#ifndef __alpha__ + /* For historical reasons, drm_get_pci_domain() is busticated + * on most archs and has to remain so for userspace interface + * < 1.4, except on alpha which was right from the beginning + */ + if (dev->if_version < 0x10004) + return 0; +#endif /* __alpha__ */ + + 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; +} + +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); + if (master->unique == NULL) + return -ENOMEM; + + + len = snprintf(master->unique, master->unique_len, + "pci:%04x:%02x:%02x.%d", + drm_get_pci_domain(dev), + dev->pdev->bus->number, + PCI_SLOT(dev->pdev->devfn), + PCI_FUNC(dev->pdev->devfn)); + + if (len >= master->unique_len) { + DRM_ERROR("buffer overflow"); + ret = -EINVAL; + goto err; + } 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; +} + +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; + master->unique = kmalloc(master->unique_size, GFP_KERNEL); + if (!master->unique) { + ret = -ENOMEM; + goto err; + } + + if (copy_from_user(master->unique, u->unique, master->unique_len)) { + ret = -EFAULT; + goto err; + } + + 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. + */ + ret = sscanf(master->unique, "PCI:%d:%d:%d", &bus, &slot, &func); + if (ret != 3) { + ret = -EINVAL; + goto err; + } + + domain = bus >> 8; + bus &= 0xff; + + if ((domain != drm_get_pci_domain(dev)) || + (bus != dev->pdev->bus->number) || + (slot != PCI_SLOT(dev->pdev->devfn)) || + (func != PCI_FUNC(dev->pdev->devfn))) { + ret = -EINVAL; + goto err; + } + return 0; +err: + return ret; +} + + +int drm_pci_irq_by_busid(struct drm_device *dev, struct drm_irq_busid *p) +{ + if ((p->busnum >> 8) != drm_get_pci_domain(dev) || + (p->busnum & 0xff) != dev->pdev->bus->number || + p->devnum != PCI_SLOT(dev->pdev->devfn) || p->funcnum != PCI_FUNC(dev->pdev->devfn)) + return -EINVAL; + + p->irq = dev->pdev->irq; + + DRM_DEBUG("%d:%d:%d => IRQ %d\n", p->busnum, p->devnum, p->funcnum, + p->irq); + return 0; +} + +int drm_pci_agp_init(struct drm_device *dev) +{ + if (drm_core_has_AGP(dev)) { + 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 (drm_core_has_MTRR(dev)) { + if (dev->agp) + dev->agp->agp_mtrr = + mtrr_add(dev->agp->agp_info.aper_base, + dev->agp->agp_info.aper_size * + 1024 * 1024, MTRR_TYPE_WRCOMB, 1); + } + } + return 0; +} + +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, + .agp_init = drm_pci_agp_init, +}; + /** * Register. * @@ -219,7 +389,7 @@ err_g1: EXPORT_SYMBOL(drm_get_pci_dev); /** - * PCI device initialization. Called via drm_init at module load time, + * PCI device initialization. Called direct from modules at load time. * * \return zero on success or a negative number on failure. * @@ -229,18 +399,24 @@ EXPORT_SYMBOL(drm_get_pci_dev); * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and * after the initialization for driver customization. */ -int drm_pci_init(struct drm_driver *driver) +int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver) { struct pci_dev *pdev = NULL; const struct pci_device_id *pid; int i; + 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(&driver->pci_driver); + return pci_register_driver(pdriver); /* If not using KMS, fall back to stealth mode manual scanning. */ - for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) { - pid = &driver->pci_driver.id_table[i]; + for (i = 0; pdriver->id_table[i].vendor != 0; i++) { + pid = &pdriver->id_table[i]; /* Loop around setting up a DRM device for each PCI device * matching our ID and device class. If we had the internal @@ -265,10 +441,27 @@ int drm_pci_init(struct drm_driver *driver) #else -int drm_pci_init(struct drm_driver *driver) +int drm_pci_init(struct drm_driver *driver, struct pci_driver *pdriver) { return -1; } #endif + +EXPORT_SYMBOL(drm_pci_init); + /*@}*/ +void drm_pci_exit(struct drm_driver *driver, struct pci_driver *pdriver) +{ + struct drm_device *dev, *tmp; + DRM_DEBUG("\n"); + + if (driver->driver_features & DRIVER_MODESET) { + pci_unregister_driver(pdriver); + } else { + list_for_each_entry_safe(dev, tmp, &driver->device_list, driver_item) + drm_put_dev(dev); + } + DRM_INFO("Module unloaded\n"); +} +EXPORT_SYMBOL(drm_pci_exit); |