drivers/gpu/drm/nouveau/include/nvkm/core/os.h

   1 /* SPDX-License-Identifier: MIT */
   2 #ifndef __NVKM_OS_H__
   3 #define __NVKM_OS_H__
   4 #include <nvif/os.h>
   5
   6 #ifdef __BIG_ENDIAN
   7 #define ioread16_native ioread16be
   8 #define iowrite16_native iowrite16be
   9 #define ioread32_native  ioread32be
  10 #define iowrite32_native iowrite32be
  11 #else
  12 #define ioread16_native ioread16
  13 #define iowrite16_native iowrite16
  14 #define ioread32_native  ioread32
  15 #define iowrite32_native iowrite32
  16 #endif
  17
  18 #define iowrite64_native(v,p) do {                                             \
  19         u32 __iomem *_p = (u32 __iomem *)(p);                                  \
  20         u64 _v = (v);                                                          \
  21         iowrite32_native(lower_32_bits(_v), &_p[0]);                           \
  22         iowrite32_native(upper_32_bits(_v), &_p[1]);                           \
  23 } while(0)
  24
  25 struct nvkm_blob {
  26         void *data;
  27         u32 size;
  28 };
  29
  30 static inline void
  31 nvkm_blob_dtor(struct nvkm_blob *blob)
  32 {
  33         kfree(blob->data);
  34         blob->data = NULL;
  35         blob->size = 0;
  36 }
  37
  38 #define nvkm_list_find_next(p,h,m,c) ({                                                      \
  39         typeof(p) _p = NULL;                                                                 \
  40         list_for_each_entry_continue(p, (h), m) {                                            \
  41                 if (c) {                                                                     \
  42                         _p = p;                                                              \
  43                         break;                                                               \
  44                 }                                                                            \
  45         }                                                                                    \
  46         _p;                                                                                  \
  47 })
  48 #define nvkm_list_find(p,h,m,c)                                                              \
  49         (p = container_of((h), typeof(*p), m), nvkm_list_find_next(p, (h), m, (c)))
  50 #define nvkm_list_foreach(p,h,m,c)                                                           \
  51         for (p = nvkm_list_find(p, (h), m, (c)); p; p = nvkm_list_find_next(p, (h), m, (c)))
  52 #endif