static bool
mxms_checksum(struct drm_device *dev)
{
u16 size = mxms_headerlen(dev) + mxms_structlen(dev);
u8 *mxms = mxms_data(dev), sum = 0;
while (size--)
sum += *mxms++;
if (sum) {
MXM_DBG(dev, "checksum invalid\n");
return false;
}
return true;
}
bool
mxms_checksum(struct nouveau_mxm *mxm)
{
u16 size = mxms_headerlen(mxm) + mxms_structlen(mxm);
u8 *mxms = mxms_data(mxm), sum = 0;
while (size--)
sum += *mxms++;
if (sum) {
nv_debug(mxm, "checksum invalid\n");
return false;
}
return true;
}
static bool
mxms_foreach(struct drm_device *dev, u8 types,
bool (*exec)(struct drm_device *, u8 *, void *), void *info)
{
u8 *mxms = mxms_data(dev);
u8 *desc = mxms + mxms_headerlen(dev);
u8 *fini = desc + mxms_structlen(dev) - 1;
while (desc < fini) {
u8 type = desc[0] & 0x0f;
u8 headerlen = 0;
u8 recordlen = 0;
u8 entries = 0;
switch (type) {
case 0:
if (mxms_version(dev) >= 0x0300)
headerlen = 8;
else
headerlen = 6;
break;
case 1:
case 2:
case 3:
headerlen = 4;
break;
case 4:
headerlen = 4;
recordlen = 2;
entries = (ROM32(desc[0]) & 0x01f00000) >> 20;
break;
case 5:
headerlen = 8;
break;
case 6:
if (mxms_version(dev) >= 0x0300) {
headerlen = 4;
recordlen = 8;
entries = (desc[1] & 0xf0) >> 4;
} else {
headerlen = 8;
}
break;
case 7:
headerlen = 8;
recordlen = 4;
entries = desc[1] & 0x07;
break;
default:
MXM_DBG(dev, "unknown descriptor type %d\n", type);
return false;
}
static bool
mxms_foreach(struct drm_device *dev, u8 types,
bool (*exec)(struct drm_device *, u8 *, void *), void *info)
{
u8 *mxms = mxms_data(dev);
u8 *desc = mxms + mxms_headerlen(dev);
u8 *fini = desc + mxms_structlen(dev) - 1;
while (desc < fini) {
u8 type = desc[0] & 0x0f;
u8 headerlen = 0;
u8 recordlen = 0;
u8 entries = 0;
switch (type) {
case 0: /* Output Device Structure */
if (mxms_version(dev) >= 0x0300)
headerlen = 8;
else
headerlen = 6;
break;
case 1: /* System Cooling Capability Structure */
case 2: /* Thermal Structure */
case 3: /* Input Power Structure */
headerlen = 4;
break;
case 4: /* GPIO Device Structure */
headerlen = 4;
recordlen = 2;
entries = (ROM32(desc[0]) & 0x01f00000) >> 20;
break;
case 5: /* Vendor Specific Structure */
headerlen = 8;
break;
case 6: /* Backlight Control Structure */
if (mxms_version(dev) >= 0x0300) {
headerlen = 4;
recordlen = 8;
entries = (desc[1] & 0xf0) >> 4;
} else {
headerlen = 8;
}
break;
case 7: /* Fan Control Structure */
headerlen = 8;
recordlen = 4;
entries = desc[1] & 0x07;
break;
default:
MXM_DBG(dev, "unknown descriptor type %d\n", type);
return false;
}