/**
* radeon_vce_cs_parse - parse and validate the command stream
*
* @p: parser context
*
*/
int radeon_vce_cs_parse(struct radeon_cs_parser *p)
{
uint32_t handle = 0;
bool destroy = false;
int i, r;
while (p->idx < p->chunks[p->chunk_ib_idx].length_dw) {
uint32_t len = radeon_get_ib_value(p, p->idx);
uint32_t cmd = radeon_get_ib_value(p, p->idx + 1);
if ((len < 8) || (len & 3)) {
DRM_ERROR("invalid VCE command length (%d)!\n", len);
return -EINVAL;
}
switch (cmd) {
case 0x00000001: // session
handle = radeon_get_ib_value(p, p->idx + 2);
break;
case 0x00000002: // task info
case 0x01000001: // create
case 0x04000001: // config extension
case 0x04000002: // pic control
case 0x04000005: // rate control
case 0x04000007: // motion estimation
case 0x04000008: // rdo
break;
case 0x03000001: // encode
r = radeon_vce_cs_reloc(p, p->idx + 10, p->idx + 9);
if (r)
return r;
r = radeon_vce_cs_reloc(p, p->idx + 12, p->idx + 11);
if (r)
return r;
break;
case 0x02000001: // destroy
destroy = true;
break;
case 0x05000001: // context buffer
case 0x05000004: // video bitstream buffer
case 0x05000005: // feedback buffer
r = radeon_vce_cs_reloc(p, p->idx + 3, p->idx + 2);
if (r)
return r;
break;
default:
DRM_ERROR("invalid VCE command (0x%x)!\n", cmd);
return -EINVAL;
}
p->idx += len / 4;
}
if (destroy) {
/* IB contains a destroy msg, free the handle */
for (i = 0; i < RADEON_MAX_VCE_HANDLES; ++i)
atomic_cmpxchg(&p->rdev->vce.handles[i], handle, 0);
return 0;
}
/* create or encode, validate the handle */
for (i = 0; i < RADEON_MAX_VCE_HANDLES; ++i) {
if (atomic_read(&p->rdev->vce.handles[i]) == handle)
return 0;
}
/* handle not found try to alloc a new one */
for (i = 0; i < RADEON_MAX_VCE_HANDLES; ++i) {
if (!atomic_cmpxchg(&p->rdev->vce.handles[i], 0, handle)) {
p->rdev->vce.filp[i] = p->filp;
return 0;
}
}
DRM_ERROR("No more free VCE handles!\n");
return -EINVAL;
}
/**
* radeon_vce_cs_parse - parse and validate the command stream
*
* @p: parser context
*
*/
int radeon_vce_cs_parse(struct radeon_cs_parser *p)
{
int session_idx = -1;
bool destroyed = false;
uint32_t tmp, handle = 0;
uint32_t *size = &tmp;
int i, r;
while (p->idx < p->chunks[p->chunk_ib_idx].length_dw) {
uint32_t len = radeon_get_ib_value(p, p->idx);
uint32_t cmd = radeon_get_ib_value(p, p->idx + 1);
if ((len < 8) || (len & 3)) {
DRM_ERROR("invalid VCE command length (%d)!\n", len);
return -EINVAL;
}
if (destroyed) {
DRM_ERROR("No other command allowed after destroy!\n");
return -EINVAL;
}
switch (cmd) {
case 0x00000001: // session
handle = radeon_get_ib_value(p, p->idx + 2);
session_idx = radeon_vce_validate_handle(p, handle);
if (session_idx < 0)
return session_idx;
size = &p->rdev->vce.img_size[session_idx];
break;
case 0x00000002: // task info
break;
case 0x01000001: // create
*size = radeon_get_ib_value(p, p->idx + 8) *
radeon_get_ib_value(p, p->idx + 10) *
8 * 3 / 2;
break;
case 0x04000001: // config extension
case 0x04000002: // pic control
case 0x04000005: // rate control
case 0x04000007: // motion estimation
case 0x04000008: // rdo
break;
case 0x03000001: // encode
r = radeon_vce_cs_reloc(p, p->idx + 10, p->idx + 9,
*size);
if (r)
return r;
r = radeon_vce_cs_reloc(p, p->idx + 12, p->idx + 11,
*size / 3);
if (r)
return r;
break;
case 0x02000001: // destroy
destroyed = true;
break;
case 0x05000001: // context buffer
r = radeon_vce_cs_reloc(p, p->idx + 3, p->idx + 2,
*size * 2);
if (r)
return r;
break;
case 0x05000004: // video bitstream buffer
tmp = radeon_get_ib_value(p, p->idx + 4);
r = radeon_vce_cs_reloc(p, p->idx + 3, p->idx + 2,
tmp);
if (r)
return r;
break;
case 0x05000005: // feedback buffer
r = radeon_vce_cs_reloc(p, p->idx + 3, p->idx + 2,
4096);
if (r)
return r;
break;
default:
DRM_ERROR("invalid VCE command (0x%x)!\n", cmd);
return -EINVAL;
}
if (session_idx == -1) {
DRM_ERROR("no session command at start of IB\n");
return -EINVAL;
}
p->idx += len / 4;
}
if (destroyed) {
/* IB contains a destroy msg, free the handle */
for (i = 0; i < RADEON_MAX_VCE_HANDLES; ++i)
atomic_cmpxchg(&p->rdev->vce.handles[i], handle, 0);
}
return 0;
}
