Commit 836cf046 authored by Dave Airlie's avatar Dave Airlie Committed by Dave Airlie

drm: cleanup buffer/map code

This is a patch from DRM CVS that cleans up some code that was in CVS
that I never moved to the kernel, this patch produces the result of the
cleanups and puts it into the kernel drm.

From: Eric Anholt <anholt@freebsd.org>, Jon Smirl, Dave Airlie
Signed-off-by: default avatarDave Airlie <airlied@linux.ie>
parent d01cff40
...@@ -908,10 +908,11 @@ extern int drm_addbufs_agp(drm_device_t *dev, drm_buf_desc_t *request); ...@@ -908,10 +908,11 @@ extern int drm_addbufs_agp(drm_device_t *dev, drm_buf_desc_t *request);
extern int drm_addbufs_pci(drm_device_t *dev, drm_buf_desc_t *request); extern int drm_addbufs_pci(drm_device_t *dev, drm_buf_desc_t *request);
extern int drm_addmap(drm_device_t *dev, unsigned int offset, extern int drm_addmap(drm_device_t *dev, unsigned int offset,
unsigned int size, drm_map_type_t type, unsigned int size, drm_map_type_t type,
drm_map_flags_t flags, drm_map_t **map_ptr); drm_map_flags_t flags, drm_local_map_t **map_ptr);
extern int drm_addmap_ioctl(struct inode *inode, struct file *filp, extern int drm_addmap_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg); unsigned int cmd, unsigned long arg);
extern int drm_rmmap(drm_device_t *dev, void *handle); extern int drm_rmmap(drm_device_t *dev, drm_local_map_t *map);
extern int drm_rmmap_locked(drm_device_t *dev, drm_local_map_t *map);
extern int drm_rmmap_ioctl(struct inode *inode, struct file *filp, extern int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg); unsigned int cmd, unsigned long arg);
...@@ -926,6 +927,10 @@ extern int drm_freebufs( struct inode *inode, struct file *filp, ...@@ -926,6 +927,10 @@ extern int drm_freebufs( struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg ); unsigned int cmd, unsigned long arg );
extern int drm_mapbufs( struct inode *inode, struct file *filp, extern int drm_mapbufs( struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg ); unsigned int cmd, unsigned long arg );
extern unsigned long drm_get_resource_start(drm_device_t *dev,
unsigned int resource);
extern unsigned long drm_get_resource_len(drm_device_t *dev,
unsigned int resource);
/* DMA support (drm_dma.h) */ /* DMA support (drm_dma.h) */
extern int drm_dma_setup(drm_device_t *dev); extern int drm_dma_setup(drm_device_t *dev);
......
...@@ -36,29 +36,33 @@ ...@@ -36,29 +36,33 @@
#include <linux/vmalloc.h> #include <linux/vmalloc.h>
#include "drmP.h" #include "drmP.h"
/** unsigned long drm_get_resource_start(drm_device_t *dev, unsigned int resource)
* Compute size order. Returns the exponent of the smaller power of two which
* is greater or equal to given number.
*
* \param size size.
* \return order.
*
* \todo Can be made faster.
*/
int drm_order( unsigned long size )
{ {
int order; return pci_resource_start(dev->pdev, resource);
unsigned long tmp; }
EXPORT_SYMBOL(drm_get_resource_start);
for (order = 0, tmp = size >> 1; tmp; tmp >>= 1, order++) unsigned long drm_get_resource_len(drm_device_t *dev, unsigned int resource)
; {
return pci_resource_len(dev->pdev, resource);
}
EXPORT_SYMBOL(drm_get_resource_len);
if (size & (size - 1)) static drm_local_map_t *drm_find_matching_map(drm_device_t *dev,
++order; drm_local_map_t *map)
{
struct list_head *list;
return order; list_for_each(list, &dev->maplist->head) {
drm_map_list_t *entry = list_entry(list, drm_map_list_t, head);
if (entry->map && map->type == entry->map->type &&
entry->map->offset == map->offset) {
return entry->map;
}
}
return NULL;
} }
EXPORT_SYMBOL(drm_order);
#ifdef CONFIG_COMPAT #ifdef CONFIG_COMPAT
/* /*
...@@ -89,6 +93,7 @@ int drm_addmap(drm_device_t * dev, unsigned int offset, ...@@ -89,6 +93,7 @@ int drm_addmap(drm_device_t * dev, unsigned int offset,
drm_map_t *map; drm_map_t *map;
drm_map_list_t *list; drm_map_list_t *list;
drm_dma_handle_t *dmah; drm_dma_handle_t *dmah;
drm_local_map_t *found_map;
map = drm_alloc( sizeof(*map), DRM_MEM_MAPS ); map = drm_alloc( sizeof(*map), DRM_MEM_MAPS );
if ( !map ) if ( !map )
...@@ -129,6 +134,24 @@ int drm_addmap(drm_device_t * dev, unsigned int offset, ...@@ -129,6 +134,24 @@ int drm_addmap(drm_device_t * dev, unsigned int offset,
#ifdef __alpha__ #ifdef __alpha__
map->offset += dev->hose->mem_space->start; map->offset += dev->hose->mem_space->start;
#endif #endif
/* Some drivers preinitialize some maps, without the X Server
* needing to be aware of it. Therefore, we just return success
* when the server tries to create a duplicate map.
*/
found_map = drm_find_matching_map(dev, map);
if (found_map != NULL) {
if (found_map->size != map->size) {
DRM_DEBUG("Matching maps of type %d with "
"mismatched sizes, (%ld vs %ld)\n",
map->type, map->size, found_map->size);
found_map->size = map->size;
}
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
*map_ptr = found_map;
return 0;
}
if (drm_core_has_MTRR(dev)) { if (drm_core_has_MTRR(dev)) {
if ( map->type == _DRM_FRAME_BUFFER || if ( map->type == _DRM_FRAME_BUFFER ||
(map->flags & _DRM_WRITE_COMBINING) ) { (map->flags & _DRM_WRITE_COMBINING) ) {
...@@ -270,93 +293,136 @@ int drm_addmap_ioctl(struct inode *inode, struct file *filp, ...@@ -270,93 +293,136 @@ int drm_addmap_ioctl(struct inode *inode, struct file *filp,
* *
* \sa drm_addmap * \sa drm_addmap
*/ */
int drm_rmmap(drm_device_t *dev, void *handle) int drm_rmmap_locked(drm_device_t *dev, drm_local_map_t *map)
{ {
struct list_head *list; struct list_head *list;
drm_map_list_t *r_list = NULL; drm_map_list_t *r_list = NULL;
drm_vma_entry_t *pt, *prev; drm_dma_handle_t dmah;
drm_map_t *map;
int found_maps = 0;
down(&dev->struct_sem); /* Find the list entry for the map and remove it */
list = &dev->maplist->head;
list_for_each(list, &dev->maplist->head) { list_for_each(list, &dev->maplist->head) {
r_list = list_entry(list, drm_map_list_t, head); r_list = list_entry(list, drm_map_list_t, head);
if(r_list->map && if (r_list->map == map) {
r_list->map->handle == handle && list_del(list);
r_list->map->flags & _DRM_REMOVABLE) break; drm_free(list, sizeof(*list), DRM_MEM_MAPS);
break;
}
} }
/* List has wrapped around to the head pointer, or its empty we didn't /* List has wrapped around to the head pointer, or it's empty and we
* find anything. * didn't find anything.
*/ */
if(list == (&dev->maplist->head)) { if (list == (&dev->maplist->head)) {
up(&dev->struct_sem);
return -EINVAL; return -EINVAL;
} }
map = r_list->map;
list_del(list);
drm_free(list, sizeof(*list), DRM_MEM_MAPS);
for (pt = dev->vmalist, prev = NULL; pt; prev = pt, pt = pt->next) {
if (pt->vma->vm_private_data == map) found_maps++;
}
if(!found_maps) { switch (map->type) {
drm_dma_handle_t dmah; case _DRM_REGISTERS:
drm_ioremapfree(map->handle, map->size, dev);
switch (map->type) { /* FALLTHROUGH */
case _DRM_REGISTERS: case _DRM_FRAME_BUFFER:
case _DRM_FRAME_BUFFER: if (drm_core_has_MTRR(dev) && map->mtrr >= 0) {
if (drm_core_has_MTRR(dev)) { int retcode;
if (map->mtrr >= 0) { retcode = mtrr_del(map->mtrr, map->offset,
int retcode; map->size);
retcode = mtrr_del(map->mtrr, DRM_DEBUG ("mtrr_del=%d\n", retcode);
map->offset,
map->size);
DRM_DEBUG("mtrr_del = %d\n", retcode);
}
}
drm_ioremapfree(map->handle, map->size, dev);
break;
case _DRM_SHM:
vfree(map->handle);
break;
case _DRM_AGP:
case _DRM_SCATTER_GATHER:
break;
case _DRM_CONSISTENT:
dmah.vaddr = map->handle;
dmah.busaddr = map->offset;
dmah.size = map->size;
__drm_pci_free(dev, &dmah);
break;
} }
drm_free(map, sizeof(*map), DRM_MEM_MAPS); break;
case _DRM_SHM:
vfree(map->handle);
break;
case _DRM_AGP:
case _DRM_SCATTER_GATHER:
break;
case _DRM_CONSISTENT:
dmah.vaddr = map->handle;
dmah.busaddr = map->offset;
dmah.size = map->size;
__drm_pci_free(dev, &dmah);
break;
} }
up(&dev->struct_sem); drm_free(map, sizeof(*map), DRM_MEM_MAPS);
return 0; return 0;
} }
EXPORT_SYMBOL(drm_rmmap_locked);
int drm_rmmap(drm_device_t *dev, drm_local_map_t *map)
{
int ret;
down(&dev->struct_sem);
ret = drm_rmmap_locked(dev, map);
up(&dev->struct_sem);
return ret;
}
EXPORT_SYMBOL(drm_rmmap); EXPORT_SYMBOL(drm_rmmap);
/* The rmmap ioctl appears to be unnecessary. All mappings are torn down on
* the last close of the device, and this is necessary for cleanup when things
* exit uncleanly. Therefore, having userland manually remove mappings seems
* like a pointless exercise since they're going away anyway.
*
* One use case might be after addmap is allowed for normal users for SHM and
* gets used by drivers that the server doesn't need to care about. This seems
* unlikely.
*/
int drm_rmmap_ioctl(struct inode *inode, struct file *filp, int drm_rmmap_ioctl(struct inode *inode, struct file *filp,
unsigned int cmd, unsigned long arg) unsigned int cmd, unsigned long arg)
{ {
drm_file_t *priv = filp->private_data; drm_file_t *priv = filp->private_data;
drm_device_t *dev = priv->head->dev; drm_device_t *dev = priv->head->dev;
drm_map_t request; drm_map_t request;
drm_local_map_t *map = NULL;
struct list_head *list;
int ret;
if (copy_from_user(&request, (drm_map_t __user *)arg, sizeof(request))) { if (copy_from_user(&request, (drm_map_t __user *)arg, sizeof(request))) {
return -EFAULT; return -EFAULT;
} }
return drm_rmmap(dev, request.handle); down(&dev->struct_sem);
list_for_each(list, &dev->maplist->head) {
drm_map_list_t *r_list = list_entry(list, drm_map_list_t, head);
if (r_list->map &&
r_list->map->handle == request.handle &&
r_list->map->flags & _DRM_REMOVABLE) {
map = r_list->map;
break;
}
}
/* List has wrapped around to the head pointer, or its empty we didn't
* find anything.
*/
if (list == (&dev->maplist->head)) {
up(&dev->struct_sem);
return -EINVAL;
}
if (!map)
return -EINVAL;
/* Register and framebuffer maps are permanent */
if ((map->type == _DRM_REGISTERS) || (map->type == _DRM_FRAME_BUFFER)) {
up(&dev->struct_sem);
return 0;
}
ret = drm_rmmap_locked(dev, map);
up(&dev->struct_sem);
return ret;
} }
/** /**
* Cleanup after an error on one of the addbufs() functions. * Cleanup after an error on one of the addbufs() functions.
* *
* \param dev DRM device.
* \param entry buffer entry where the error occurred. * \param entry buffer entry where the error occurred.
* *
* Frees any pages and buffers associated with the given entry. * Frees any pages and buffers associated with the given entry.
...@@ -1470,3 +1536,26 @@ int drm_mapbufs( struct inode *inode, struct file *filp, ...@@ -1470,3 +1536,26 @@ int drm_mapbufs( struct inode *inode, struct file *filp,
return retcode; return retcode;
} }
/**
* Compute size order. Returns the exponent of the smaller power of two which
* is greater or equal to given number.
*
* \param size size.
* \return order.
*
* \todo Can be made faster.
*/
int drm_order( unsigned long size )
{
int order;
unsigned long tmp;
for (order = 0, tmp = size >> 1; tmp; tmp >>= 1, order++)
;
if (size & (size - 1))
++order;
return order;
}
EXPORT_SYMBOL(drm_order);
...@@ -132,9 +132,7 @@ static drm_ioctl_desc_t drm_ioctls[] = { ...@@ -132,9 +132,7 @@ static drm_ioctl_desc_t drm_ioctls[] = {
int drm_takedown( drm_device_t *dev ) int drm_takedown( drm_device_t *dev )
{ {
drm_magic_entry_t *pt, *next; drm_magic_entry_t *pt, *next;
drm_map_t *map;
drm_map_list_t *r_list; drm_map_list_t *r_list;
struct list_head *list, *list_next;
drm_vma_entry_t *vma, *vma_next; drm_vma_entry_t *vma, *vma_next;
int i; int i;
...@@ -142,6 +140,7 @@ int drm_takedown( drm_device_t *dev ) ...@@ -142,6 +140,7 @@ int drm_takedown( drm_device_t *dev )
if (dev->driver->pretakedown) if (dev->driver->pretakedown)
dev->driver->pretakedown(dev); dev->driver->pretakedown(dev);
DRM_DEBUG("driver pretakedown completed\n");
if (dev->unique) { if (dev->unique) {
drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER); drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
...@@ -184,6 +183,10 @@ int drm_takedown( drm_device_t *dev ) ...@@ -184,6 +183,10 @@ int drm_takedown( drm_device_t *dev )
dev->agp->acquired = 0; dev->agp->acquired = 0;
dev->agp->enabled = 0; dev->agp->enabled = 0;
} }
if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) {
drm_sg_cleanup(dev->sg);
dev->sg = NULL;
}
/* Clear vma list (only built for debugging) */ /* Clear vma list (only built for debugging) */
if ( dev->vmalist ) { if ( dev->vmalist ) {
...@@ -195,56 +198,11 @@ int drm_takedown( drm_device_t *dev ) ...@@ -195,56 +198,11 @@ int drm_takedown( drm_device_t *dev )
} }
if( dev->maplist ) { if( dev->maplist ) {
list_for_each_safe( list, list_next, &dev->maplist->head ) { while (!list_empty(&dev->maplist->head)) {
r_list = (drm_map_list_t *)list; struct list_head *list = dev->maplist->head.next;
r_list = list_entry(list, drm_map_list_t, head);
if ( ( map = r_list->map ) ) { drm_rmmap_locked(dev, r_list->map);
drm_dma_handle_t dmah; }
switch ( map->type ) {
case _DRM_REGISTERS:
case _DRM_FRAME_BUFFER:
if (drm_core_has_MTRR(dev)) {
if ( map->mtrr >= 0 ) {
int retcode;
retcode = mtrr_del( map->mtrr,
map->offset,
map->size );
DRM_DEBUG( "mtrr_del=%d\n", retcode );
}
}
drm_ioremapfree( map->handle, map->size, dev );
break;
case _DRM_SHM:
vfree(map->handle);
break;
case _DRM_AGP:
/* Do nothing here, because this is all
* handled in the AGP/GART driver.
*/
break;
case _DRM_SCATTER_GATHER:
/* Handle it */
if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) {
drm_sg_cleanup(dev->sg);
dev->sg = NULL;
}
break;
case _DRM_CONSISTENT:
dmah.vaddr = map->handle;
dmah.busaddr = map->offset;
dmah.size = map->size;
__drm_pci_free(dev, &dmah);
break;
}
drm_free(map, sizeof(*map), DRM_MEM_MAPS);
}
list_del( list );
drm_free(r_list, sizeof(*r_list), DRM_MEM_MAPS);
}
drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
dev->maplist = NULL;
} }
if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist ) { if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist ) {
...@@ -273,6 +231,7 @@ int drm_takedown( drm_device_t *dev ) ...@@ -273,6 +231,7 @@ int drm_takedown( drm_device_t *dev )
} }
up( &dev->struct_sem ); up( &dev->struct_sem );
DRM_DEBUG("takedown completed\n");
return 0; return 0;
} }
...@@ -334,6 +293,11 @@ static void drm_cleanup( drm_device_t *dev ) ...@@ -334,6 +293,11 @@ static void drm_cleanup( drm_device_t *dev )
drm_takedown( dev ); drm_takedown( dev );
if (dev->maplist) {
drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
dev->maplist = NULL;
}
drm_ctxbitmap_cleanup( dev ); drm_ctxbitmap_cleanup( dev );
if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
......
...@@ -71,12 +71,6 @@ static int drm_setup( drm_device_t *dev ) ...@@ -71,12 +71,6 @@ static int drm_setup( drm_device_t *dev )
dev->magiclist[i].tail = NULL; dev->magiclist[i].tail = NULL;
} }
dev->maplist = drm_alloc(sizeof(*dev->maplist),
DRM_MEM_MAPS);
if(dev->maplist == NULL) return -ENOMEM;
memset(dev->maplist, 0, sizeof(*dev->maplist));
INIT_LIST_HEAD(&dev->maplist->head);
dev->ctxlist = drm_alloc(sizeof(*dev->ctxlist), dev->ctxlist = drm_alloc(sizeof(*dev->ctxlist),
DRM_MEM_CTXLIST); DRM_MEM_CTXLIST);
if(dev->ctxlist == NULL) return -ENOMEM; if(dev->ctxlist == NULL) return -ENOMEM;
......
...@@ -75,6 +75,11 @@ static int drm_fill_in_dev(drm_device_t *dev, struct pci_dev *pdev, const struct ...@@ -75,6 +75,11 @@ static int drm_fill_in_dev(drm_device_t *dev, struct pci_dev *pdev, const struct
dev->pci_func = PCI_FUNC(pdev->devfn); dev->pci_func = PCI_FUNC(pdev->devfn);
dev->irq = pdev->irq; dev->irq = pdev->irq;
dev->maplist = drm_calloc(1, sizeof(*dev->maplist), DRM_MEM_MAPS);
if (dev->maplist == NULL)
return -ENOMEM;
INIT_LIST_HEAD(&dev->maplist->head);
/* the DRM has 6 basic counters */ /* the DRM has 6 basic counters */
dev->counters = 6; dev->counters = 6;
dev->types[0] = _DRM_STAT_LOCK; dev->types[0] = _DRM_STAT_LOCK;
......
...@@ -2048,6 +2048,27 @@ int radeon_driver_preinit(struct drm_device *dev, unsigned long flags) ...@@ -2048,6 +2048,27 @@ int radeon_driver_preinit(struct drm_device *dev, unsigned long flags)
return ret; return ret;
} }
int radeon_presetup(struct drm_device *dev)
{
int ret;
drm_local_map_t *map;
drm_radeon_private_t *dev_priv = dev->dev_private;
ret = drm_addmap(dev, drm_get_resource_start(dev, 2),
drm_get_resource_len(dev, 2), _DRM_REGISTERS,
_DRM_READ_ONLY, &dev_priv->mmio);
if (ret != 0)
return ret;
ret = drm_addmap(dev, drm_get_resource_start(dev, 0),
drm_get_resource_len(dev, 0), _DRM_FRAME_BUFFER,
_DRM_WRITE_COMBINING, &map);
if (ret != 0)
return ret;
return 0;
}
int radeon_driver_postcleanup(struct drm_device *dev) int radeon_driver_postcleanup(struct drm_device *dev)
{ {
drm_radeon_private_t *dev_priv = dev->dev_private; drm_radeon_private_t *dev_priv = dev->dev_private;
......
...@@ -76,6 +76,7 @@ static struct drm_driver driver = { ...@@ -76,6 +76,7 @@ static struct drm_driver driver = {
.driver_features = DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG | DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_IRQ_VBL, .driver_features = DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_PCI_DMA | DRIVER_SG | DRIVER_HAVE_IRQ | DRIVER_HAVE_DMA | DRIVER_IRQ_SHARED | DRIVER_IRQ_VBL,
.dev_priv_size = sizeof(drm_radeon_buf_priv_t), .dev_priv_size = sizeof(drm_radeon_buf_priv_t),
.preinit = radeon_driver_preinit, .preinit = radeon_driver_preinit,
.presetup = radeon_presetup,
.postcleanup = radeon_driver_postcleanup, .postcleanup = radeon_driver_postcleanup,
.prerelease = radeon_driver_prerelease, .prerelease = radeon_driver_prerelease,
.pretakedown = radeon_driver_pretakedown, .pretakedown = radeon_driver_pretakedown,
......
...@@ -290,6 +290,7 @@ extern int radeon_wait_ring( drm_radeon_private_t *dev_priv, int n ); ...@@ -290,6 +290,7 @@ extern int radeon_wait_ring( drm_radeon_private_t *dev_priv, int n );
extern int radeon_do_cp_idle( drm_radeon_private_t *dev_priv ); extern int radeon_do_cp_idle( drm_radeon_private_t *dev_priv );
extern int radeon_driver_preinit(struct drm_device *dev, unsigned long flags); extern int radeon_driver_preinit(struct drm_device *dev, unsigned long flags);
extern int radeon_presetup(struct drm_device *dev);
extern int radeon_driver_postcleanup(struct drm_device *dev); extern int radeon_driver_postcleanup(struct drm_device *dev);
extern int radeon_mem_alloc( DRM_IOCTL_ARGS ); extern int radeon_mem_alloc( DRM_IOCTL_ARGS );
......
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