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-rw-r--r--linux/drmP.h5
-rw-r--r--linux/drm_drv.h20
-rw-r--r--linux/drm_vm.h12
3 files changed, 29 insertions, 8 deletions
diff --git a/linux/drmP.h b/linux/drmP.h
index 4786ba9e..7557fdc9 100644
--- a/linux/drmP.h
+++ b/linux/drmP.h
@@ -71,11 +71,6 @@
#include <asm/pgalloc.h>
#include "drm.h"
-/* page_to_bus for earlier kernels, not optimal in all cases */
-#ifndef page_to_bus
-#define page_to_bus(page) ((unsigned int)(virt_to_bus(page_address(page))))
-#endif
-
/* DRM template customization defaults
*/
#ifndef __HAVE_AGP
diff --git a/linux/drm_drv.h b/linux/drm_drv.h
index 1ae3ec25..61c6cdd2 100644
--- a/linux/drm_drv.h
+++ b/linux/drm_drv.h
@@ -1027,6 +1027,25 @@ int DRM(unlock)( struct inode *inode, struct file *filp,
atomic_inc( &dev->counts[_DRM_STAT_UNLOCKS] );
+#if __HAVE_KERNEL_CTX_SWITCH
+ /* We no longer really hold it, but if we are the next
+ * agent to request it then we should just be able to
+ * take it immediately and not eat the ioctl.
+ */
+ dev->lock.pid = 0;
+ {
+ __volatile__ unsigned int *plock = &dev->lock.hw_lock->lock;
+ unsigned int old, new, prev, ctx;
+
+ ctx = lock.context;
+ do {
+ old = *plock;
+ new = ctx;
+ prev = cmpxchg(plock, old, new);
+ } while (prev != old);
+ }
+ wake_up_interruptible(&dev->lock.lock_queue);
+#else
DRM(lock_transfer)( dev, &dev->lock.hw_lock->lock,
DRM_KERNEL_CONTEXT );
#if __HAVE_DMA_SCHEDULE
@@ -1041,6 +1060,7 @@ int DRM(unlock)( struct inode *inode, struct file *filp,
DRM_ERROR( "\n" );
}
}
+#endif /* !__HAVE_KERNEL_CTX_SWITCH */
unblock_all_signals();
return 0;
diff --git a/linux/drm_vm.h b/linux/drm_vm.h
index ce66f908..30b5b226 100644
--- a/linux/drm_vm.h
+++ b/linux/drm_vm.h
@@ -153,7 +153,7 @@ struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
page = pte_page(*pte);
get_page(page);
- DRM_DEBUG("0x%08lx => 0x%08x\n", address, page_to_bus(page));
+ DRM_DEBUG("shm_nopage 0x%lx\n", address);
return page;
}
@@ -255,8 +255,7 @@ struct page *DRM(vm_dma_nopage)(struct vm_area_struct *vma,
get_page(page);
- DRM_DEBUG("0x%08lx (page %lu) => 0x%08x\n", address, page_nr,
- page_to_bus(page));
+ DRM_DEBUG("dma_nopage 0x%lx (page %lu)\n", address, page_nr);
return page;
}
@@ -457,10 +456,17 @@ int DRM(mmap)(struct file *filp, struct vm_area_struct *vma)
vma->vm_flags |= VM_IO; /* not in core dump */
}
offset = DRIVER_GET_REG_OFS();
+#ifdef __sparc__
+ if (io_remap_page_range(vma->vm_start,
+ VM_OFFSET(vma) + offset,
+ vma->vm_end - vma->vm_start,
+ vma->vm_page_prot, 0))
+#else
if (remap_page_range(vma->vm_start,
VM_OFFSET(vma) + offset,
vma->vm_end - vma->vm_start,
vma->vm_page_prot))
+#endif
return -EAGAIN;
DRM_DEBUG(" Type = %d; start = 0x%lx, end = 0x%lx,"
" offset = 0x%lx\n",