Introduce two new helpers, drm_agp_clear() and drm_agp_destroy() which clear all AGP mappings and destroy the AGP head. This allows to reduce the AGP code in core DRM and move it all to drm_agpsupport.c.
Signed-off-by: David Herrmann dh.herrmann@gmail.com --- Hi Dave
I exported the AGP cleanup from the previous series. I did not fix up drm_fill_in_dev() (which currently calls lastclose() to clear AGP) or the bus drivers to use it. I actually think the drm_dev_alloc/free() patches are a nicer way to fix that. If not, please let me know and I will fix them up separately.
Cheers David
drivers/gpu/drm/drm_agpsupport.c | 51 ++++++++++++++++++++++++++++++++++++++++ drivers/gpu/drm/drm_drv.c | 21 +---------------- drivers/gpu/drm/drm_pci.c | 12 ++++++++++ drivers/gpu/drm/drm_stub.c | 9 ++----- include/drm/drmP.h | 3 +++ 5 files changed, 69 insertions(+), 27 deletions(-)
diff --git a/drivers/gpu/drm/drm_agpsupport.c b/drivers/gpu/drm/drm_agpsupport.c index 3d8fed1..e301d65 100644 --- a/drivers/gpu/drm/drm_agpsupport.c +++ b/drivers/gpu/drm/drm_agpsupport.c @@ -424,6 +424,57 @@ struct drm_agp_head *drm_agp_init(struct drm_device *dev) }
/** + * drm_agp_clear - Clear AGP resource list + * @dev: DRM device + * + * Iterate over all AGP resources and remove them. But keep the AGP head + * intact so it can still be used. It is safe to call this if AGP is disabled or + * was already removed. + * + * If DRIVER_MODESET is active, nothing is done to protect the modesetting + * resources from getting destroyed. Drivers are responsible of cleaning them up + * during device shutdown. + */ +void drm_agp_clear(struct drm_device *dev) +{ + struct drm_agp_mem *entry, *tempe; + + if (!drm_core_has_AGP(dev) || !dev->agp) + return; + if (drm_core_check_feature(dev, DRIVER_MODESET)) + return; + + list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { + if (entry->bound) + drm_unbind_agp(entry->memory); + drm_free_agp(entry->memory, entry->pages); + kfree(entry); + } + INIT_LIST_HEAD(&dev->agp->memory); + + if (dev->agp->acquired) + drm_agp_release(dev); + + dev->agp->acquired = 0; + dev->agp->enabled = 0; +} + +/** + * drm_agp_destroy - Destroy AGP head + * @dev: DRM device + * + * Destroy resources that were previously allocated via drm_agp_initp. Caller + * must ensure to clean up all AGP resources before calling this. See + * drm_agp_clear(). + * + * Call this to destroy AGP heads allocated via drm_agp_init(). + */ +void drm_agp_destroy(struct drm_agp_head *agp) +{ + kfree(agp); +} + +/** * Binds a collection of pages into AGP memory at the given offset, returning * the AGP memory structure containing them. * diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c index 36103d1..dddd799 100644 --- a/drivers/gpu/drm/drm_drv.c +++ b/drivers/gpu/drm/drm_drv.c @@ -195,27 +195,8 @@ int drm_lastclose(struct drm_device * dev)
mutex_lock(&dev->struct_mutex);
- /* Clear AGP information */ - if (drm_core_has_AGP(dev) && dev->agp && - !drm_core_check_feature(dev, DRIVER_MODESET)) { - struct drm_agp_mem *entry, *tempe; - - /* Remove AGP resources, but leave dev->agp - intact until drv_cleanup is called. */ - list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) { - if (entry->bound) - drm_unbind_agp(entry->memory); - drm_free_agp(entry->memory, entry->pages); - kfree(entry); - } - INIT_LIST_HEAD(&dev->agp->memory); - - if (dev->agp->acquired) - drm_agp_release(dev); + drm_agp_clear(dev);
- dev->agp->acquired = 0; - dev->agp->enabled = 0; - } if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg && !drm_core_check_feature(dev, DRIVER_MODESET)) { drm_sg_cleanup(dev->sg); diff --git a/drivers/gpu/drm/drm_pci.c b/drivers/gpu/drm/drm_pci.c index a7b46ff..0f54ad8 100644 --- a/drivers/gpu/drm/drm_pci.c +++ b/drivers/gpu/drm/drm_pci.c @@ -283,6 +283,17 @@ static int drm_pci_agp_init(struct drm_device *dev) return 0; }
+static void drm_pci_agp_destroy(struct drm_device *dev) +{ + if (drm_core_has_AGP(dev) && dev->agp) { + if (drm_core_has_MTRR(dev)) + arch_phys_wc_del(dev->agp->agp_mtrr); + drm_agp_clear(dev); + drm_agp_destroy(dev->agp); + dev->agp = NULL; + } +} + static struct drm_bus drm_pci_bus = { .bus_type = DRIVER_BUS_PCI, .get_irq = drm_pci_get_irq, @@ -291,6 +302,7 @@ static struct drm_bus drm_pci_bus = { .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, };
/** diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c index 327ca19..d663f7d 100644 --- a/drivers/gpu/drm/drm_stub.c +++ b/drivers/gpu/drm/drm_stub.c @@ -451,16 +451,11 @@ void drm_put_dev(struct drm_device *dev)
drm_lastclose(dev);
- if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && dev->agp) - arch_phys_wc_del(dev->agp->agp_mtrr); - if (dev->driver->unload) dev->driver->unload(dev);
- if (drm_core_has_AGP(dev) && dev->agp) { - kfree(dev->agp); - dev->agp = NULL; - } + if (dev->driver->bus->agp_destroy) + dev->driver->bus->agp_destroy(dev);
drm_vblank_cleanup(dev);
diff --git a/include/drm/drmP.h b/include/drm/drmP.h index 4b518e0..a8a363e 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -736,6 +736,7 @@ struct drm_bus { int (*irq_by_busid)(struct drm_device *dev, struct drm_irq_busid *p); /* hooks that are for PCI */ int (*agp_init)(struct drm_device *dev); + void (*agp_destroy)(struct drm_device *dev);
};
@@ -1453,6 +1454,8 @@ extern int drm_modeset_ctl(struct drm_device *dev, void *data,
/* AGP/GART support (drm_agpsupport.h) */ extern struct drm_agp_head *drm_agp_init(struct drm_device *dev); +extern void drm_agp_destroy(struct drm_agp_head *agp); +extern void drm_agp_clear(struct drm_device *dev); extern int drm_agp_acquire(struct drm_device *dev); extern int drm_agp_acquire_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv);