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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-02-02 08:55:47 +0300
committerDave Airlie <airlied@redhat.com>2009-03-13 07:23:57 +0300
commit41c2e75e60200a860a74b7c84a6375c105e7437f (patch)
tree18e97662d6859eead4de816e121d001b34a7352a /drivers/gpu/drm/mga
parentf77d390c9779c496aa5b99ec832996fb76bb1d13 (diff)
downloadlinux-41c2e75e60200a860a74b7c84a6375c105e7437f.tar.xz
drm: Make drm_local_map use a resource_size_t offset
This changes drm_local_map to use a resource_size for its "offset" member instead of an unsigned long, thus allowing 32-bit machines with a >32-bit physical address space to be able to store there their register or framebuffer addresses when those are above 4G, such as when using a PCI video card on a recent AMCC 440 SoC. This patch isn't as "trivial" as it sounds: A few functions needed to have some unsigned long/int changed to resource_size_t and a few printk's had to be adjusted. But also, because userspace isn't capable of passing such offsets, I had to modify drm_find_matching_map() to ignore the offset passed in for maps of type _DRM_FRAMEBUFFER or _DRM_REGISTERS. If we ever support multiple _DRM_FRAMEBUFFER or _DRM_REGISTERS maps for a given device, we might have to change that trick, but I don't think that happens on any current driver. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Dave Airlie <airlied@linux.ie>
Diffstat (limited to 'drivers/gpu/drm/mga')
-rw-r--r--drivers/gpu/drm/mga/mga_dma.c17
-rw-r--r--drivers/gpu/drm/mga/mga_drv.h4
2 files changed, 11 insertions, 10 deletions
diff --git a/drivers/gpu/drm/mga/mga_dma.c b/drivers/gpu/drm/mga/mga_dma.c
index b49c5ff29585..7a6bf9ffc5a3 100644
--- a/drivers/gpu/drm/mga/mga_dma.c
+++ b/drivers/gpu/drm/mga/mga_dma.c
@@ -148,8 +148,8 @@ void mga_do_dma_flush(drm_mga_private_t * dev_priv)
primary->space = head - tail;
}
- DRM_DEBUG(" head = 0x%06lx\n", head - dev_priv->primary->offset);
- DRM_DEBUG(" tail = 0x%06lx\n", tail - dev_priv->primary->offset);
+ DRM_DEBUG(" head = 0x%06lx\n", (unsigned long)(head - dev_priv->primary->offset));
+ DRM_DEBUG(" tail = 0x%06lx\n", (unsigned long)(tail - dev_priv->primary->offset));
DRM_DEBUG(" space = 0x%06x\n", primary->space);
mga_flush_write_combine();
@@ -187,7 +187,7 @@ void mga_do_dma_wrap_start(drm_mga_private_t * dev_priv)
primary->space = head - dev_priv->primary->offset;
}
- DRM_DEBUG(" head = 0x%06lx\n", head - dev_priv->primary->offset);
+ DRM_DEBUG(" head = 0x%06lx\n", (unsigned long)(head - dev_priv->primary->offset));
DRM_DEBUG(" tail = 0x%06x\n", primary->tail);
DRM_DEBUG(" wrap = %d\n", primary->last_wrap);
DRM_DEBUG(" space = 0x%06x\n", primary->space);
@@ -239,7 +239,7 @@ static void mga_freelist_print(struct drm_device * dev)
for (entry = dev_priv->head->next; entry; entry = entry->next) {
DRM_INFO(" %p idx=%2d age=0x%x 0x%06lx\n",
entry, entry->buf->idx, entry->age.head,
- entry->age.head - dev_priv->primary->offset);
+ (unsigned long)(entry->age.head - dev_priv->primary->offset));
}
DRM_INFO("\n");
}
@@ -340,10 +340,10 @@ static struct drm_buf *mga_freelist_get(struct drm_device * dev)
DRM_DEBUG(" tail=0x%06lx %d\n",
tail->age.head ?
- tail->age.head - dev_priv->primary->offset : 0,
+ (unsigned long)(tail->age.head - dev_priv->primary->offset) : 0,
tail->age.wrap);
DRM_DEBUG(" head=0x%06lx %d\n",
- head - dev_priv->primary->offset, wrap);
+ (unsigned long)(head - dev_priv->primary->offset), wrap);
if (TEST_AGE(&tail->age, head, wrap)) {
prev = dev_priv->tail->prev;
@@ -366,8 +366,9 @@ int mga_freelist_put(struct drm_device * dev, struct drm_buf * buf)
drm_mga_freelist_t *head, *entry, *prev;
DRM_DEBUG("age=0x%06lx wrap=%d\n",
- buf_priv->list_entry->age.head -
- dev_priv->primary->offset, buf_priv->list_entry->age.wrap);
+ (unsigned long)(buf_priv->list_entry->age.head -
+ dev_priv->primary->offset),
+ buf_priv->list_entry->age.wrap);
entry = buf_priv->list_entry;
head = dev_priv->head;
diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h
index 6bf4de990325..3d264f288237 100644
--- a/drivers/gpu/drm/mga/mga_drv.h
+++ b/drivers/gpu/drm/mga/mga_drv.h
@@ -317,8 +317,8 @@ do { \
DRM_INFO( "\n" ); \
DRM_INFO( " tail=0x%06x head=0x%06lx\n", \
dev_priv->prim.tail, \
- MGA_READ( MGA_PRIMADDRESS ) - \
- dev_priv->primary->offset ); \
+ (unsigned long)(MGA_READ(MGA_PRIMADDRESS) - \
+ dev_priv->primary->offset)); \
} \
if ( !test_bit( 0, &dev_priv->prim.wrapped ) ) { \
if ( dev_priv->prim.space < \