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drm/nv50-/disp: audit and version SOR_DP_PWR method 

The full object interfaces are about to be exposed to userspace, so we
need to check for any security-related issues and version the structs
to make it easier to handle any changes we may need in the future.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
hifive-unleashed-5.1
Ben Skeggs 2014-08-10 04:10:27 +10:00
parent a3761fa248
commit c02ed2bf98
9 changed files with 41 additions and 74 deletions
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24
drivers/gpu/drm/nouveau/core/engine/disp/nv50.c
View File

@ -928,6 +928,30 @@ nv50_disp_base_mthd(struct nouveau_object *object, u32 mthd,
return ret;
}
break;
case NV50_DISP_MTHD_V1_SOR_DP_PWR: {
struct nvkm_output_dp *outpdp = (void *)outp;
union {
struct nv50_disp_sor_dp_pwr_v0 v0;
} *args = data;
nv_ioctl(object, "disp sor dp pwr size %d\n", size);
if (nvif_unpack(args->v0, 0, 0, false)) {
nv_ioctl(object, "disp sor dp pwr vers %d state %d\n",
args->v0.version, args->v0.state);
if (args->v0.state == 0) {
nvkm_notify_put(&outpdp->irq);
((struct nvkm_output_dp_impl *)nv_oclass(outp))
->lnk_pwr(outpdp, 0);
atomic_set(&outpdp->lt.done, 0);
return 0;
} else
if (args->v0.state != 0) {
nvkm_output_dp_train(&outpdp->base, 0, true);
return 0;
}
} else
return ret;
}
break;
default:
break;
}

1
drivers/gpu/drm/nouveau/core/engine/disp/nv50.h
View File

@ -77,7 +77,6 @@ int nv84_hdmi_ctrl(NV50_DISP_MTHD_V1);
int nva3_hdmi_ctrl(NV50_DISP_MTHD_V1);
int nvd0_hdmi_ctrl(NV50_DISP_MTHD_V1);
int nv50_sor_mthd(struct nouveau_object *, u32, void *, u32);
int nv50_sor_power(NV50_DISP_MTHD_V1);
int nv94_sor_dp_train_init(struct nv50_disp_priv *, int, int, int, u16, u16,

1
drivers/gpu/drm/nouveau/core/engine/disp/nv94.c
View File

@ -74,7 +74,6 @@ nv94_disp_sclass[] = {
static struct nouveau_omthds
nv94_disp_base_omthds[] = {
{ HEAD_MTHD(NV50_DISP_SCANOUTPOS) , nv50_disp_base_scanoutpos },
{ SOR_MTHD(NV94_DISP_SOR_DP_PWR) , nv50_sor_mthd },
{ PIOR_MTHD(NV50_DISP_PIOR_PWR) , nv50_pior_mthd },
{ PIOR_MTHD(NV50_DISP_PIOR_TMDS_PWR) , nv50_pior_mthd },
{ PIOR_MTHD(NV50_DISP_PIOR_DP_PWR) , nv50_pior_mthd },

1
drivers/gpu/drm/nouveau/core/engine/disp/nva3.c
View File

@ -46,7 +46,6 @@ nva3_disp_sclass[] = {
static struct nouveau_omthds
nva3_disp_base_omthds[] = {
{ HEAD_MTHD(NV50_DISP_SCANOUTPOS) , nv50_disp_base_scanoutpos },
{ SOR_MTHD(NV94_DISP_SOR_DP_PWR) , nv50_sor_mthd },
{ PIOR_MTHD(NV50_DISP_PIOR_PWR) , nv50_pior_mthd },
{ PIOR_MTHD(NV50_DISP_PIOR_TMDS_PWR) , nv50_pior_mthd },
{ PIOR_MTHD(NV50_DISP_PIOR_DP_PWR) , nv50_pior_mthd },

1
drivers/gpu/drm/nouveau/core/engine/disp/nvd0.c
View File

@ -712,7 +712,6 @@ nvd0_disp_base_ofuncs = {
struct nouveau_omthds
nvd0_disp_base_omthds[] = {
{ HEAD_MTHD(NV50_DISP_SCANOUTPOS) , nvd0_disp_base_scanoutpos },
{ SOR_MTHD(NV94_DISP_SOR_DP_PWR) , nv50_sor_mthd },
{ PIOR_MTHD(NV50_DISP_PIOR_PWR) , nv50_pior_mthd },
{ PIOR_MTHD(NV50_DISP_PIOR_TMDS_PWR) , nv50_pior_mthd },
{ PIOR_MTHD(NV50_DISP_PIOR_DP_PWR) , nv50_pior_mthd },

51
drivers/gpu/drm/nouveau/core/engine/disp/sornv50.c
View File

@ -57,54 +57,3 @@ nv50_sor_power(NV50_DISP_MTHD_V1)
nv_wait(priv, 0x61c030 + soff, 0x10000000, 0x00000000);
return 0;
}
int
nv50_sor_mthd(struct nouveau_object *object, u32 mthd, void *args, u32 size)
{
struct nv50_disp_priv *priv = (void *)object->engine;
const u8 type = (mthd & NV50_DISP_SOR_MTHD_TYPE) >> 12;
const u8 head = (mthd & NV50_DISP_SOR_MTHD_HEAD) >> 3;
const u8 link = (mthd & NV50_DISP_SOR_MTHD_LINK) >> 2;
const u8 or = (mthd & NV50_DISP_SOR_MTHD_OR);
const u16 mask = (0x0100 << head) | (0x0040 << link) | (0x0001 << or);
struct nvkm_output *outp = NULL, *temp;
u32 data;
int ret = -EINVAL;
if (size < sizeof(u32))
return -EINVAL;
data = *(u32 *)args;
list_for_each_entry(temp, &priv->base.outp, head) {
if ((temp->info.hasht & 0xff) == type &&
(temp->info.hashm & mask) == mask) {
outp = temp;
break;
}
}
switch (mthd & ~0x3f) {
case NV94_DISP_SOR_DP_PWR:
if (outp) {
struct nvkm_output_dp *outpdp = (void *)outp;
switch (data) {
case NV94_DISP_SOR_DP_PWR_STATE_OFF:
nvkm_notify_put(&outpdp->irq);
((struct nvkm_output_dp_impl *)nv_oclass(outp))
->lnk_pwr(outpdp, 0);
atomic_set(&outpdp->lt.done, 0);
break;
case NV94_DISP_SOR_DP_PWR_STATE_ON:
nvkm_output_dp_train(&outpdp->base, 0, true);
break;
default:
return -EINVAL;
}
}
break;
default:
BUG_ON(1);
}
return ret;
}

11
drivers/gpu/drm/nouveau/core/include/core/class.h
View File

@ -53,17 +53,6 @@ struct nv04_display_scanoutpos {
#define NV50_DISP_SCANOUTPOS 0x00000000
#define NV50_DISP_SOR_MTHD 0x00010000
#define NV50_DISP_SOR_MTHD_TYPE 0x0000f000
#define NV50_DISP_SOR_MTHD_HEAD 0x00000018
#define NV50_DISP_SOR_MTHD_LINK 0x00000004
#define NV50_DISP_SOR_MTHD_OR 0x00000003
#define NV94_DISP_SOR_DP_PWR 0x00016000
#define NV94_DISP_SOR_DP_PWR_STATE 0x00000001
#define NV94_DISP_SOR_DP_PWR_STATE_OFF 0x00000000
#define NV94_DISP_SOR_DP_PWR_STATE_ON 0x00000001
#define NV50_DISP_PIOR_MTHD 0x00030000
#define NV50_DISP_PIOR_MTHD_TYPE 0x0000f000
#define NV50_DISP_PIOR_MTHD_OR 0x00000003

19
drivers/gpu/drm/nouveau/nv50_display.c
View File

@ -1785,9 +1785,18 @@ nv50_sor_dpms(struct drm_encoder *encoder, int mode)
.base.hashm = nv_encoder->dcb->hashm,
.pwr.state = mode == DRM_MODE_DPMS_ON,
};
struct {
struct nv50_disp_mthd_v1 base;
struct nv50_disp_sor_dp_pwr_v0 pwr;
} link = {
.base.version = 1,
.base.method = NV50_DISP_MTHD_V1_SOR_DP_PWR,
.base.hasht = nv_encoder->dcb->hasht,
.base.hashm = nv_encoder->dcb->hashm,
.pwr.state = mode == DRM_MODE_DPMS_ON,
};
struct drm_device *dev = encoder->dev;
struct drm_encoder *partner;
u32 mthd, data;
nv_encoder->last_dpms = mode;
@ -1805,16 +1814,10 @@ nv50_sor_dpms(struct drm_encoder *encoder, int mode)
}
}
mthd = (ffs(nv_encoder->dcb->heads) - 1) << 3;
mthd |= (ffs(nv_encoder->dcb->sorconf.link) - 1) << 2;
mthd |= nv_encoder->or;
if (nv_encoder->dcb->type == DCB_OUTPUT_DP) {
args.pwr.state = 1;
nvif_mthd(disp->disp, 0, &args, sizeof(args));
data = (mode == DRM_MODE_DPMS_ON);
mthd |= NV94_DISP_SOR_DP_PWR;
nvif_exec(disp->disp, mthd, &data, sizeof(data));
nvif_mthd(disp->disp, 0, &link, sizeof(link));
} else {
nvif_mthd(disp->disp, 0, &args, sizeof(args));
}

6
drivers/gpu/drm/nouveau/nvif/class.h
View File

@ -367,4 +367,10 @@ struct nv50_disp_sor_lvds_script_v0 {
__u8 pad04[4];
};
struct nv50_disp_sor_dp_pwr_v0 {
__u8 version;
__u8 state;
__u8 pad02[6];
};
#endif