drm: powerpc can use a simpler drm_io_prot()

[cascardo/linux.git] / drivers / gpu / drm / drm_vm.c

diff --git a/drivers/gpu/drm/drm_vm.c b/drivers/gpu/drm/drm_vm.c
index 24e045c..b2b231c 100644 (file)
--- a/drivers/gpu/drm/drm_vm.c
+++ b/drivers/gpu/drm/drm_vm.c
@@ -35,10 +35,19 @@
 
 #include <drm/drmP.h>
 #include <linux/export.h>
+#include <linux/seq_file.h>
 #if defined(__ia64__)
 #include <linux/efi.h>
 #include <linux/slab.h>
 #endif
+#include <asm/pgtable.h>
+#include "drm_legacy.h"
+
+struct drm_vma_entry {
+       struct list_head head;
+       struct vm_area_struct *vma;
+       pid_t pid;
+};
 
 static void drm_vm_open(struct vm_area_struct *vma);
 static void drm_vm_close(struct vm_area_struct *vma);
@@ -48,15 +57,11 @@ static pgprot_t drm_io_prot(struct drm_local_map *map,
 {
        pgprot_t tmp = vm_get_page_prot(vma->vm_flags);
 
-#if defined(__i386__) || defined(__x86_64__)
+#if defined(__i386__) || defined(__x86_64__) || defined(__powerpc__)
        if (map->type == _DRM_REGISTERS && !(map->flags & _DRM_WRITE_COMBINING))
                tmp = pgprot_noncached(tmp);
        else
                tmp = pgprot_writecombine(tmp);
-#elif defined(__powerpc__)
-       pgprot_val(tmp) |= _PAGE_NO_CACHE;
-       if (map->type == _DRM_REGISTERS)
-               pgprot_val(tmp) |= _PAGE_GUARDED;
 #elif defined(__ia64__)
        if (efi_range_is_wc(vma->vm_start, vma->vm_end -
                                    vma->vm_start))
@@ -263,7 +268,7 @@ static void drm_vm_shm_close(struct vm_area_struct *vma)
                                dmah.vaddr = map->handle;
                                dmah.busaddr = map->offset;
                                dmah.size = map->size;
-                               __drm_pci_free(dev, &dmah);
+                               __drm_legacy_pci_free(dev, &dmah);
                                break;
                        }
                        kfree(map);
@@ -662,3 +667,68 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
        return ret;
 }
 EXPORT_SYMBOL(drm_mmap);
+
+void drm_legacy_vma_flush(struct drm_device *dev)
+{
+       struct drm_vma_entry *vma, *vma_temp;
+
+       /* Clear vma list (only needed for legacy drivers) */
+       list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
+               list_del(&vma->head);
+               kfree(vma);
+       }
+}
+
+int drm_vma_info(struct seq_file *m, void *data)
+{
+       struct drm_info_node *node = (struct drm_info_node *) m->private;
+       struct drm_device *dev = node->minor->dev;
+       struct drm_vma_entry *pt;
+       struct vm_area_struct *vma;
+       unsigned long vma_count = 0;
+#if defined(__i386__)
+       unsigned int pgprot;
+#endif
+
+       mutex_lock(&dev->struct_mutex);
+       list_for_each_entry(pt, &dev->vmalist, head)
+               vma_count++;
+
+       seq_printf(m, "vma use count: %lu, high_memory = %pK, 0x%pK\n",
+                  vma_count, high_memory,
+                  (void *)(unsigned long)virt_to_phys(high_memory));
+
+       list_for_each_entry(pt, &dev->vmalist, head) {
+               vma = pt->vma;
+               if (!vma)
+                       continue;
+               seq_printf(m,
+                          "\n%5d 0x%pK-0x%pK %c%c%c%c%c%c 0x%08lx000",
+                          pt->pid,
+                          (void *)vma->vm_start, (void *)vma->vm_end,
+                          vma->vm_flags & VM_READ ? 'r' : '-',
+                          vma->vm_flags & VM_WRITE ? 'w' : '-',
+                          vma->vm_flags & VM_EXEC ? 'x' : '-',
+                          vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
+                          vma->vm_flags & VM_LOCKED ? 'l' : '-',
+                          vma->vm_flags & VM_IO ? 'i' : '-',
+                          vma->vm_pgoff);
+
+#if defined(__i386__)
+               pgprot = pgprot_val(vma->vm_page_prot);
+               seq_printf(m, " %c%c%c%c%c%c%c%c%c",
+                          pgprot & _PAGE_PRESENT ? 'p' : '-',
+                          pgprot & _PAGE_RW ? 'w' : 'r',
+                          pgprot & _PAGE_USER ? 'u' : 's',
+                          pgprot & _PAGE_PWT ? 't' : 'b',
+                          pgprot & _PAGE_PCD ? 'u' : 'c',
+                          pgprot & _PAGE_ACCESSED ? 'a' : '-',
+                          pgprot & _PAGE_DIRTY ? 'd' : '-',
+                          pgprot & _PAGE_PSE ? 'm' : 'k',
+                          pgprot & _PAGE_GLOBAL ? 'g' : 'l');
+#endif
+               seq_printf(m, "\n");
+       }
+       mutex_unlock(&dev->struct_mutex);
+       return 0;
+}