[PATCH 03/15] gma500: add an mmap ioctl

From: Alan Cox
Date: Fri Jul 15 2011 - 12:41:31 EST


From: Alan Cox <alan@xxxxxxxxxxxxxxx>

This does the same as the dumb mmap but we want them separated in the ABI
in case a future extension to the dumb interface means we can't treat them
the same way.

Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
---

drivers/staging/gma500/gem.c | 8 ++++++++
drivers/staging/gma500/psb_drm.h | 12 ++++++++++++
drivers/staging/gma500/psb_drv.c | 8 +++++++-
drivers/staging/gma500/psb_drv.h | 2 ++
4 files changed, 29 insertions(+), 1 deletions(-)

diff --git a/drivers/staging/gma500/gem.c b/drivers/staging/gma500/gem.c
index 68ecd5f..d7b74b6 100644
--- a/drivers/staging/gma500/gem.c
+++ b/drivers/staging/gma500/gem.c
@@ -261,3 +261,11 @@ int psb_gem_create_ioctl(struct drm_device *dev, void *data,
return psb_gem_create(file, dev, args->size, &args->handle);
}

+int psb_gem_mmap_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file)
+{
+ struct drm_psb_gem_mmap *args = data;
+ return dev->driver->dumb_map_offset(file, dev,
+ args->handle, &args->offset);
+}
+
diff --git a/drivers/staging/gma500/psb_drm.h b/drivers/staging/gma500/psb_drm.h
index eef53f3..70115a9 100644
--- a/drivers/staging/gma500/psb_drm.h
+++ b/drivers/staging/gma500/psb_drm.h
@@ -162,6 +162,7 @@ struct drm_psb_register_rw_arg {

#define DRM_PSB_GEM_CREATE 0x10
#define DRM_PSB_2D_OP 0x11
+#define DRM_PSB_GEM_MMAP 0x12
#define DRM_PSB_DPST 0x1B
#define DRM_PSB_GAMMA 0x1C
#define DRM_PSB_DPST_BL 0x1D
@@ -203,4 +204,15 @@ struct drm_psb_2d_op {
__u32 cmd[PSB_2D_OP_BUFLEN];
};

+struct drm_psb_gem_mmap {
+ __u32 handle;
+ __u32 pad;
+ /**
+ * Fake offset to use for subsequent mmap call
+ *
+ * This is a fixed-size type for 32/64 compatibility.
+ */
+ __u64 offset;
+};
+
#endif
diff --git a/drivers/staging/gma500/psb_drv.c b/drivers/staging/gma500/psb_drv.c
index 36bb716..b8b9864 100644
--- a/drivers/staging/gma500/psb_drv.c
+++ b/drivers/staging/gma500/psb_drv.c
@@ -127,6 +127,9 @@ MODULE_DEVICE_TABLE(pci, pciidlist);
#define DRM_IOCTL_PSB_2D_OP \
DRM_IOW(DRM_PSB_2D_OP + DRM_COMMAND_BASE, \
struct drm_psb_2d_op)
+#define DRM_IOCTL_PSB_GEM_MMAP \
+ DRM_IOWR(DRM_PSB_GEM_MMAP + DRM_COMMAND_BASE, \
+ struct drm_psb_gem_mmap)

static int psb_sizes_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv);
@@ -167,7 +170,10 @@ static struct drm_ioctl_desc psb_ioctls[] = {
psb_intel_get_pipe_from_crtc_id, 0),
PSB_IOCTL_DEF(DRM_IOCTL_PSB_GEM_CREATE, psb_gem_create_ioctl,
DRM_UNLOCKED | DRM_AUTH),
- PSB_IOCTL_DEF(DRM_IOCTL_PSB_2D_OP, psb_accel_ioctl, DRM_UNLOCKED),
+ PSB_IOCTL_DEF(DRM_IOCTL_PSB_2D_OP, psb_accel_ioctl,
+ DRM_UNLOCKED| DRM_AUTH),
+ PSB_IOCTL_DEF(DRM_IOCTL_PSB_GEM_MMAP, psb_gem_mmap_ioctl,
+ DRM_UNLOCKED | DRM_AUTH),
};

static void psb_lastclose(struct drm_device *dev)
diff --git a/drivers/staging/gma500/psb_drv.h b/drivers/staging/gma500/psb_drv.h
index db3e356..daf3ca5 100644
--- a/drivers/staging/gma500/psb_drv.h
+++ b/drivers/staging/gma500/psb_drv.h
@@ -799,6 +799,8 @@ extern int psb_gem_dumb_map_gtt(struct drm_file *file, struct drm_device *dev,
extern int psb_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
extern int psb_gem_create_ioctl(struct drm_device *dev, void *data,
struct drm_file *file);
+extern int psb_gem_mmap_ioctl(struct drm_device *dev, void *data,
+ struct drm_file *file);

/* psb_device.c */
extern const struct psb_ops psb_chip_ops;

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