drm/msm: add a3xx gpu support

Add initial support for a3xx 3d core.

So far, with hardware that I've seen to date, we can have:
 + zero, one, or two z180 2d cores
 + a3xx or a2xx 3d core, which share a common CP (the firmware
   for the CP seems to implement some different PM4 packet types
   but the basics of cmdstream submission are the same)

Which means that the eventual complete "class" hierarchy, once
support for all past and present hw is in place, becomes:
 + msm_gpu
   + adreno_gpu
     + a3xx_gpu
     + a2xx_gpu
   + z180_gpu

This commit splits out the parts that will eventually be common
between a2xx/a3xx into adreno_gpu, and the parts that are even
common to z180 into msm_gpu.

Note that there is no cmdstream validation required.  All memory access
from the GPU is via IOMMU/MMU.  So as long as you don't map silly things
to the GPU, there isn't much damage that the GPU can do.

Signed-off-by: Rob Clark <robdclark@gmail.com>

1 files changed, 34 insertions, 10 deletions

diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 36f8ba2f5c84..34c36b2911d9 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -40,17 +40,34 @@
 #include <drm/drmP.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_fb_helper.h>
+#include <drm/msm_drm.h>
 
 struct msm_kms;
+struct msm_gpu;
 
-#define NUM_DOMAINS 1    /* one for KMS, then one per gpu core (?) */
+#define NUM_DOMAINS 2    /* one for KMS, then one per gpu core (?) */
+
+struct msm_file_private {
+        /* currently we don't do anything useful with this.. but when
+         * per-context address spaces are supported we'd keep track of
+         * the context's page-tables here.
+         */
+        int dummy;
+};
 
 struct msm_drm_private {
 
         struct msm_kms *kms;
 
+        /* when we have more than one 'msm_gpu' these need to be an array: */
+        struct msm_gpu *gpu;
+        struct msm_file_private *lastctx;
+
         struct drm_fb_helper *fbdev;
 
+        uint32_t next_fence, completed_fence;
+        wait_queue_head_t fence_event;
+
         /* list of GEM objects: */
         struct list_head inactive_list;
 
@@ -108,6 +125,13 @@ int msm_register_iommu(struct drm_device *dev, struct iommu_domain *iommu);
 int msm_iommu_attach(struct drm_device *dev, struct iommu_domain *iommu,
                 const char **names, int cnt);
 
+int msm_wait_fence_interruptable(struct drm_device *dev, uint32_t fence,
+                struct timespec *timeout);
+void msm_update_fence(struct drm_device *dev, uint32_t fence);
+
+int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
+                struct drm_file *file);
+
 int msm_gem_mmap(struct file *filp, struct vm_area_struct *vma);
 int msm_gem_fault(struct vm_area_struct *vma, struct vm_fault *vmf);
 uint64_t msm_gem_mmap_offset(struct drm_gem_object *obj);
@@ -125,6 +149,12 @@ void *msm_gem_vaddr_locked(struct drm_gem_object *obj);
 void *msm_gem_vaddr(struct drm_gem_object *obj);
 int msm_gem_queue_inactive_work(struct drm_gem_object *obj,
                 struct work_struct *work);
+void msm_gem_move_to_active(struct drm_gem_object *obj,
+                struct msm_gpu *gpu, uint32_t fence);
+void msm_gem_move_to_inactive(struct drm_gem_object *obj);
+int msm_gem_cpu_prep(struct drm_gem_object *obj, uint32_t op,
+                struct timespec *timeout);
+int msm_gem_cpu_fini(struct drm_gem_object *obj);
 void msm_gem_free_object(struct drm_gem_object *obj);
 int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file,
                 uint32_t size, uint32_t flags, uint32_t *handle);
@@ -168,20 +198,14 @@ static inline int align_pitch(int width, int bpp)
 
 /* for the generated headers: */
 #define INVALID_IDX(idx) ({BUG(); 0;})
+#define fui(x)                ({BUG(); 0;})
+#define util_float_to_half(x) ({BUG(); 0;})
+
 
 #define FIELD(val, name) (((val) & name ## __MASK) >> name ## __SHIFT)
 
 /* for conditionally setting boolean flag(s): */
 #define COND(bool, val) ((bool) ? (val) : 0)
 
-/* just put these here until we start adding driver private ioctls: */
-// TODO might shuffle these around.. just need something for now..
-#define MSM_BO_CACHE_MASK       0x0000000f
-#define MSM_BO_SCANOUT          0x00010000      /* scanout capable */
-
-#define MSM_BO_CACHED           0x00000001      /* default */
-#define MSM_BO_WC               0x0000002
-#define MSM_BO_UNCACHED 0x00000004
-
 
 #endif /* __MSM_DRV_H__ */