Quelle  firmware.h   Sprache: C

/* SPDX-License-Identifier: MIT */
#ifndef __NVKM_FIRMWARE_H__
#define __NVKM_FIRMWARE_H__
#include <core/memory.h>
#include <core/option.h>
#include <core/subdev.h>

struct nvkm_firmware {
 const struct nvkm_firmware_func {
  enum nvkm_firmware_type {
   NVKM_FIRMWARE_IMG_RAM,
   NVKM_FIRMWARE_IMG_DMA,
   NVKM_FIRMWARE_IMG_SGT,
  } type;
 } *func;
 const char *name;
 struct nvkm_device *device;

 int len;
 u8 *img;
 u64 phys;

 struct nvkm_firmware_mem {
  struct nvkm_memory memory;
  union {
   struct scatterlist sgl; /* DMA */
   struct sg_table sgt; /* SGT */
  };
 } mem;
};

int nvkm_firmware_ctor(const struct nvkm_firmware_func *, const char *name, struct nvkm_device *,
         const void *ptr, int len, struct nvkm_firmware *);
void nvkm_firmware_dtor(struct nvkm_firmware *);

int nvkm_firmware_get(const struct nvkm_subdev *, const char *fwname, int ver,
        const struct firmware **);
void nvkm_firmware_put(const struct firmware *);

int nvkm_firmware_load_blob(const struct nvkm_subdev *subdev, const char *path,
       const char *name, int ver, struct nvkm_blob *);
int nvkm_firmware_load_name(const struct nvkm_subdev *subdev, const char *path,
       const char *name, int ver,
       const struct firmware **);

#define nvkm_firmware_load(s,l,o,p...) ({                                      \
 struct nvkm_subdev *_s = (s);                                          \
 const char *_opts = (o);                                               \
 char _option[32];                                                      \
 typeof(l[0]) *_list = (l), *_next, *_fwif = NULL;                      \
 int _ver, _fwv, _ret = 0;                                              \
                                                                               \
 snprintf(_option, sizeof(_option), "Nv%sFw", _opts);                   \
 _ver = nvkm_longopt(_s->device->cfgopt, _option, -2);                  \
 if (_ver >= -1) {                                                      \
  for (_next = _list; !_fwif && _next->load; _next++) {          \
   if (_next->version == _ver)                            \
    _fwif = _next;                                 \
  }                                                              \
  _ret = _fwif ? 0 : -EINVAL;                                    \
 }                                                                      \
                                                                               \
 if (_ret == 0) {                                                       \
  snprintf(_option, sizeof(_option), "Nv%sFwVer", _opts);        \
  _fwv = _fwif ? _fwif->version : -1;                            \
  _ver = nvkm_longopt(_s->device->cfgopt, _option, _fwv);        \
  for (_next = _fwif ? _fwif : _list; _next->load; _next++) {    \
   _fwv = (_ver >= 0) ? _ver : _next->version;            \
   _ret = _next->load(p, _fwv, _next);                    \
   if (_ret == 0 || _ver >= 0) {                          \
    _fwif = _next;                                 \
    break;                                         \
   }                                                      \
  }                                                              \
 }                                                                      \
                                                                               \
 if (_ret)                                                              \
  _fwif = ERR_PTR(_ret);                                         \
 _fwif;                                                                 \
})
#endif