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authorBen Skeggs <bskeggs@redhat.com>2014-08-09 22:10:25 +0400
committerBen Skeggs <bskeggs@redhat.com>2014-08-09 23:28:04 +0400
commita532da976f17234375d3b34633ff5d48f71f62bc (patch)
tree5cad4e7ae3f469bcaf7c38b778e440159fcb7f7b
parent96af8222cef78ab4d92186d5e10880dc78395415 (diff)
downloadlinux-a532da976f17234375d3b34633ff5d48f71f62bc.tar.xz
drm/nouveau/device: audit and version NVIF_CONTROL class and methods
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>
-rw-r--r--drivers/gpu/drm/nouveau/core/core/object.c2
-rw-r--r--drivers/gpu/drm/nouveau/core/engine/device/ctrl.c161
-rw-r--r--drivers/gpu/drm/nouveau/core/include/core/class.h43
-rw-r--r--drivers/gpu/drm/nouveau/core/include/core/object.h4
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_sysfs.c27
-rw-r--r--drivers/gpu/drm/nouveau/nvif/class.h48
-rw-r--r--drivers/gpu/drm/nouveau/nvif/ioctl.h1
7 files changed, 174 insertions, 112 deletions
diff --git a/drivers/gpu/drm/nouveau/core/core/object.c b/drivers/gpu/drm/nouveau/core/core/object.c
index d6fea944a5a7..b08630577c82 100644
--- a/drivers/gpu/drm/nouveau/core/core/object.c
+++ b/drivers/gpu/drm/nouveau/core/core/object.c
@@ -58,7 +58,7 @@ nouveau_object_create_(struct nouveau_object *parent,
return 0;
}
-static int
+int
_nouveau_object_ctor(struct nouveau_object *parent,
struct nouveau_object *engine,
struct nouveau_oclass *oclass, void *data, u32 size,
diff --git a/drivers/gpu/drm/nouveau/core/engine/device/ctrl.c b/drivers/gpu/drm/nouveau/core/engine/device/ctrl.c
index fb546f3a1af0..e34101a3490e 100644
--- a/drivers/gpu/drm/nouveau/core/engine/device/ctrl.c
+++ b/drivers/gpu/drm/nouveau/core/engine/device/ctrl.c
@@ -22,59 +22,82 @@
* Authors: Ben Skeggs <bskeggs@redhat.com>
*/
+#include <core/client.h>
#include <core/object.h>
-#include <core/class.h>
+#include <nvif/unpack.h>
+#include <nvif/class.h>
+#include <nvif/ioctl.h>
#include <subdev/clock.h>
#include "priv.h"
static int
-nouveau_control_mthd_pstate_info(struct nouveau_object *object, u32 mthd,
- void *data, u32 size)
+nouveau_control_mthd_pstate_info(struct nouveau_object *object,
+ void *data, u32 size)
{
+ union {
+ struct nvif_control_pstate_info_v0 v0;
+ } *args = data;
struct nouveau_clock *clk = nouveau_clock(object);
- struct nv_control_pstate_info *args = data;
+ int ret;
- if (size < sizeof(*args))
- return -EINVAL;
+ nv_ioctl(object, "control pstate info size %d\n", size);
+ if (nvif_unpack(args->v0, 0, 0, false)) {
+ nv_ioctl(object, "control pstate info vers %d\n",
+ args->v0.version);
+ } else
+ return ret;
if (clk) {
- args->count = clk->state_nr;
- args->ustate_ac = clk->ustate_ac;
- args->ustate_dc = clk->ustate_dc;
- args->pwrsrc = clk->pwrsrc;
- args->pstate = clk->pstate;
+ args->v0.count = clk->state_nr;
+ args->v0.ustate_ac = clk->ustate_ac;
+ args->v0.ustate_dc = clk->ustate_dc;
+ args->v0.pwrsrc = clk->pwrsrc;
+ args->v0.pstate = clk->pstate;
} else {
- args->count = 0;
- args->ustate_ac = NV_CONTROL_PSTATE_INFO_USTATE_DISABLE;
- args->ustate_dc = NV_CONTROL_PSTATE_INFO_USTATE_DISABLE;
- args->pwrsrc = -ENOSYS;
- args->pstate = NV_CONTROL_PSTATE_INFO_PSTATE_UNKNOWN;
+ args->v0.count = 0;
+ args->v0.ustate_ac = NVIF_CONTROL_PSTATE_INFO_V0_USTATE_DISABLE;
+ args->v0.ustate_dc = NVIF_CONTROL_PSTATE_INFO_V0_USTATE_DISABLE;
+ args->v0.pwrsrc = -ENOSYS;
+ args->v0.pstate = NVIF_CONTROL_PSTATE_INFO_V0_PSTATE_UNKNOWN;
}
return 0;
}
static int
-nouveau_control_mthd_pstate_attr(struct nouveau_object *object, u32 mthd,
- void *data, u32 size)
+nouveau_control_mthd_pstate_attr(struct nouveau_object *object,
+ void *data, u32 size)
{
+ union {
+ struct nvif_control_pstate_attr_v0 v0;
+ } *args = data;
struct nouveau_clock *clk = nouveau_clock(object);
- struct nv_control_pstate_attr *args = data;
struct nouveau_clocks *domain;
struct nouveau_pstate *pstate;
struct nouveau_cstate *cstate;
int i = 0, j = -1;
u32 lo, hi;
-
- if ((size < sizeof(*args)) || !clk ||
- (args->state >= 0 && args->state >= clk->state_nr))
- return -EINVAL;
+ int ret;
+
+ nv_ioctl(object, "control pstate attr size %d\n", size);
+ if (nvif_unpack(args->v0, 0, 0, false)) {
+ nv_ioctl(object, "control pstate attr vers %d state %d "
+ "index %d\n",
+ args->v0.version, args->v0.state, args->v0.index);
+ if (!clk)
+ return -ENODEV;
+ if (args->v0.state < NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT)
+ return -EINVAL;
+ if (args->v0.state >= clk->state_nr)
+ return -EINVAL;
+ } else
+ return ret;
domain = clk->domains;
while (domain->name != nv_clk_src_max) {
- if (domain->mname && ++j == args->index)
+ if (domain->mname && ++j == args->v0.index)
break;
domain++;
}
@@ -82,9 +105,9 @@ nouveau_control_mthd_pstate_attr(struct nouveau_object *object, u32 mthd,
if (domain->name == nv_clk_src_max)
return -EINVAL;
- if (args->state != NV_CONTROL_PSTATE_ATTR_STATE_CURRENT) {
+ if (args->v0.state != NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT) {
list_for_each_entry(pstate, &clk->states, head) {
- if (i++ == args->state)
+ if (i++ == args->v0.state)
break;
}
@@ -95,21 +118,21 @@ nouveau_control_mthd_pstate_attr(struct nouveau_object *object, u32 mthd,
hi = max(hi, cstate->domain[domain->name]);
}
- args->state = pstate->pstate;
+ args->v0.state = pstate->pstate;
} else {
lo = max(clk->read(clk, domain->name), 0);
hi = lo;
}
- snprintf(args->name, sizeof(args->name), "%s", domain->mname);
- snprintf(args->unit, sizeof(args->unit), "MHz");
- args->min = lo / domain->mdiv;
- args->max = hi / domain->mdiv;
+ snprintf(args->v0.name, sizeof(args->v0.name), "%s", domain->mname);
+ snprintf(args->v0.unit, sizeof(args->v0.unit), "MHz");
+ args->v0.min = lo / domain->mdiv;
+ args->v0.max = hi / domain->mdiv;
- args->index = 0;
+ args->v0.index = 0;
while ((++domain)->name != nv_clk_src_max) {
if (domain->mname) {
- args->index = ++j;
+ args->v0.index = ++j;
break;
}
}
@@ -118,39 +141,65 @@ nouveau_control_mthd_pstate_attr(struct nouveau_object *object, u32 mthd,
}
static int
-nouveau_control_mthd_pstate_user(struct nouveau_object *object, u32 mthd,
- void *data, u32 size)
+nouveau_control_mthd_pstate_user(struct nouveau_object *object,
+ void *data, u32 size)
{
+ union {
+ struct nvif_control_pstate_user_v0 v0;
+ } *args = data;
struct nouveau_clock *clk = nouveau_clock(object);
- struct nv_control_pstate_user *args = data;
- int ret = 0;
-
- if (size < sizeof(*args) || !clk)
- return -EINVAL;
-
- if (args->pwrsrc >= 0) {
- ret |= nouveau_clock_ustate(clk, args->ustate, args->pwrsrc);
+ int ret;
+
+ nv_ioctl(object, "control pstate user size %d\n", size);
+ if (nvif_unpack(args->v0, 0, 0, false)) {
+ nv_ioctl(object, "control pstate user vers %d ustate %d "
+ "pwrsrc %d\n", args->v0.version,
+ args->v0.ustate, args->v0.pwrsrc);
+ if (!clk)
+ return -ENODEV;
+ } else
+ return ret;
+
+ if (args->v0.pwrsrc >= 0) {
+ ret |= nouveau_clock_ustate(clk, args->v0.ustate, args->v0.pwrsrc);
} else {
- ret |= nouveau_clock_ustate(clk, args->ustate, 0);
- ret |= nouveau_clock_ustate(clk, args->ustate, 1);
+ ret |= nouveau_clock_ustate(clk, args->v0.ustate, 0);
+ ret |= nouveau_clock_ustate(clk, args->v0.ustate, 1);
}
return ret;
}
+static int
+nouveau_control_mthd(struct nouveau_object *object, u32 mthd,
+ void *data, u32 size)
+{
+ switch (mthd) {
+ case NVIF_CONTROL_PSTATE_INFO:
+ return nouveau_control_mthd_pstate_info(object, data, size);
+ case NVIF_CONTROL_PSTATE_ATTR:
+ return nouveau_control_mthd_pstate_attr(object, data, size);
+ case NVIF_CONTROL_PSTATE_USER:
+ return nouveau_control_mthd_pstate_user(object, data, size);
+ default:
+ break;
+ }
+ return -EINVAL;
+}
+
+static struct nouveau_ofuncs
+nouveau_control_ofuncs = {
+ .ctor = _nouveau_object_ctor,
+ .dtor = nouveau_object_destroy,
+ .init = nouveau_object_init,
+ .fini = nouveau_object_fini,
+ .mthd = nouveau_control_mthd,
+};
+
struct nouveau_oclass
nouveau_control_oclass[] = {
- { .handle = NV_CONTROL_CLASS,
- .ofuncs = &nouveau_object_ofuncs,
- .omthds = (struct nouveau_omthds[]) {
- { NV_CONTROL_PSTATE_INFO,
- NV_CONTROL_PSTATE_INFO, nouveau_control_mthd_pstate_info },
- { NV_CONTROL_PSTATE_ATTR,
- NV_CONTROL_PSTATE_ATTR, nouveau_control_mthd_pstate_attr },
- { NV_CONTROL_PSTATE_USER,
- NV_CONTROL_PSTATE_USER, nouveau_control_mthd_pstate_user },
- {},
- },
+ { .handle = NVIF_IOCTL_NEW_V0_CONTROL,
+ .ofuncs = &nouveau_control_ofuncs
},
{}
};
diff --git a/drivers/gpu/drm/nouveau/core/include/core/class.h b/drivers/gpu/drm/nouveau/core/include/core/class.h
index 3df23606eb02..79de03bdff96 100644
--- a/drivers/gpu/drm/nouveau/core/include/core/class.h
+++ b/drivers/gpu/drm/nouveau/core/include/core/class.h
@@ -3,49 +3,6 @@
#include <nvif/class.h>
-/* Device control class
- *
- * XXXX: NV_CONTROL
- */
-#define NV_CONTROL_CLASS 0x0000fffe
-
-#define NV_CONTROL_PSTATE_INFO 0x00000000
-#define NV_CONTROL_PSTATE_INFO_USTATE_DISABLE (-1)
-#define NV_CONTROL_PSTATE_INFO_USTATE_PERFMON (-2)
-#define NV_CONTROL_PSTATE_INFO_PSTATE_UNKNOWN (-1)
-#define NV_CONTROL_PSTATE_INFO_PSTATE_PERFMON (-2)
-#define NV_CONTROL_PSTATE_ATTR 0x00000001
-#define NV_CONTROL_PSTATE_ATTR_STATE_CURRENT (-1)
-#define NV_CONTROL_PSTATE_USER 0x00000002
-#define NV_CONTROL_PSTATE_USER_STATE_UNKNOWN (-1)
-#define NV_CONTROL_PSTATE_USER_STATE_PERFMON (-2)
-
-struct nv_control_pstate_info {
- u32 count; /* out: number of power states */
- s32 ustate_ac; /* out: target pstate index */
- s32 ustate_dc; /* out: target pstate index */
- s32 pwrsrc; /* out: current power source */
- u32 pstate; /* out: current pstate index */
-};
-
-struct nv_control_pstate_attr {
- s32 state; /* in: index of pstate to query
- * out: pstate identifier
- */
- u32 index; /* in: index of attribute to query
- * out: index of next attribute, or 0 if no more
- */
- char name[32];
- char unit[16];
- u32 min;
- u32 max;
-};
-
-struct nv_control_pstate_user {
- s32 ustate; /* in: pstate identifier */
- s32 pwrsrc; /* in: target power source */
-};
-
/* DMA FIFO channel classes
*
* 006b: NV03_CHANNEL_DMA
diff --git a/drivers/gpu/drm/nouveau/core/include/core/object.h b/drivers/gpu/drm/nouveau/core/include/core/object.h
index b22e8fd4005e..d7039482d6fd 100644
--- a/drivers/gpu/drm/nouveau/core/include/core/object.h
+++ b/drivers/gpu/drm/nouveau/core/include/core/object.h
@@ -48,6 +48,10 @@ void nouveau_object_destroy(struct nouveau_object *);
int nouveau_object_init(struct nouveau_object *);
int nouveau_object_fini(struct nouveau_object *, bool suspend);
+int _nouveau_object_ctor(struct nouveau_object *, struct nouveau_object *,
+ struct nouveau_oclass *, void *, u32,
+ struct nouveau_object **);
+
extern struct nouveau_ofuncs nouveau_object_ofuncs;
/* Don't allocate dynamically, because lockdep needs lock_class_keys to be in
diff --git a/drivers/gpu/drm/nouveau/nouveau_sysfs.c b/drivers/gpu/drm/nouveau/nouveau_sysfs.c
index d14e6ef93a48..32a23895abd5 100644
--- a/drivers/gpu/drm/nouveau/nouveau_sysfs.c
+++ b/drivers/gpu/drm/nouveau/nouveau_sysfs.c
@@ -24,6 +24,7 @@
#include <nvif/os.h>
#include <nvif/class.h>
+#include <nvif/ioctl.h>
#include "nouveau_sysfs.h"
@@ -43,25 +44,25 @@ static ssize_t
nouveau_sysfs_pstate_get(struct device *d, struct device_attribute *a, char *b)
{
struct nouveau_sysfs *sysfs = nouveau_sysfs(drm_device(d));
- struct nv_control_pstate_info info;
+ struct nvif_control_pstate_info_v0 info = {};
size_t cnt = PAGE_SIZE;
char *buf = b;
int ret, i;
- ret = nvif_exec(&sysfs->ctrl, NV_CONTROL_PSTATE_INFO,
+ ret = nvif_mthd(&sysfs->ctrl, NVIF_CONTROL_PSTATE_INFO,
&info, sizeof(info));
if (ret)
return ret;
for (i = 0; i < info.count + 1; i++) {
const s32 state = i < info.count ? i :
- NV_CONTROL_PSTATE_ATTR_STATE_CURRENT;
- struct nv_control_pstate_attr attr = {
+ NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT;
+ struct nvif_control_pstate_attr_v0 attr = {
.state = state,
.index = 0,
};
- ret = nvif_exec(&sysfs->ctrl, NV_CONTROL_PSTATE_ATTR,
+ ret = nvif_mthd(&sysfs->ctrl, NVIF_CONTROL_PSTATE_ATTR,
&attr, sizeof(attr));
if (ret)
return ret;
@@ -76,7 +77,8 @@ nouveau_sysfs_pstate_get(struct device *d, struct device_attribute *a, char *b)
attr.index = 0;
do {
attr.state = state;
- ret = nvif_exec(&sysfs->ctrl, NV_CONTROL_PSTATE_ATTR,
+ ret = nvif_mthd(&sysfs->ctrl,
+ NVIF_CONTROL_PSTATE_ATTR,
&attr, sizeof(attr));
if (ret)
return ret;
@@ -112,7 +114,7 @@ nouveau_sysfs_pstate_set(struct device *d, struct device_attribute *a,
const char *buf, size_t count)
{
struct nouveau_sysfs *sysfs = nouveau_sysfs(drm_device(d));
- struct nv_control_pstate_user args = { .pwrsrc = -EINVAL };
+ struct nvif_control_pstate_user_v0 args = { .pwrsrc = -EINVAL };
long value, ret;
char *tmp;
@@ -129,10 +131,10 @@ nouveau_sysfs_pstate_set(struct device *d, struct device_attribute *a,
}
if (!strcasecmp(buf, "none"))
- args.ustate = NV_CONTROL_PSTATE_USER_STATE_UNKNOWN;
+ args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_UNKNOWN;
else
if (!strcasecmp(buf, "auto"))
- args.ustate = NV_CONTROL_PSTATE_USER_STATE_PERFMON;
+ args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_PERFMON;
else {
ret = kstrtol(buf, 16, &value);
if (ret)
@@ -140,7 +142,7 @@ nouveau_sysfs_pstate_set(struct device *d, struct device_attribute *a,
args.ustate = value;
}
- ret = nvif_exec(&sysfs->ctrl, NV_CONTROL_PSTATE_USER,
+ ret = nvif_mthd(&sysfs->ctrl, NVIF_CONTROL_PSTATE_USER,
&args, sizeof(args));
if (ret < 0)
return ret;
@@ -179,8 +181,9 @@ nouveau_sysfs_init(struct drm_device *dev)
if (!sysfs)
return -ENOMEM;
- ret = nvif_object_init(nvif_object(&drm->device), NULL, NVDRM_CONTROL,
- NV_CONTROL_CLASS, NULL, 0, &sysfs->ctrl);
+ ret = nvif_object_init(nvif_object(device), NULL, NVDRM_CONTROL,
+ NVIF_IOCTL_NEW_V0_CONTROL, NULL, 0,
+ &sysfs->ctrl);
if (ret == 0)
device_create_file(nv_device_base(nvkm_device(device)), &dev_attr_pstate);
diff --git a/drivers/gpu/drm/nouveau/nvif/class.h b/drivers/gpu/drm/nouveau/nvif/class.h
index decca22ea528..7d6c13026855 100644
--- a/drivers/gpu/drm/nouveau/nvif/class.h
+++ b/drivers/gpu/drm/nouveau/nvif/class.h
@@ -185,4 +185,52 @@ struct nvif_perfctr_read_v0 {
__u32 clk;
};
+
+/*******************************************************************************
+ * device control
+ ******************************************************************************/
+
+#define NVIF_CONTROL_PSTATE_INFO 0x00
+#define NVIF_CONTROL_PSTATE_ATTR 0x01
+#define NVIF_CONTROL_PSTATE_USER 0x02
+
+struct nvif_control_pstate_info_v0 {
+ __u8 version;
+ __u8 count; /* out: number of power states */
+#define NVIF_CONTROL_PSTATE_INFO_V0_USTATE_DISABLE (-1)
+#define NVIF_CONTROL_PSTATE_INFO_V0_USTATE_PERFMON (-2)
+ __s8 ustate_ac; /* out: target pstate index */
+ __s8 ustate_dc; /* out: target pstate index */
+ __s8 pwrsrc; /* out: current power source */
+#define NVIF_CONTROL_PSTATE_INFO_V0_PSTATE_UNKNOWN (-1)
+#define NVIF_CONTROL_PSTATE_INFO_V0_PSTATE_PERFMON (-2)
+ __s8 pstate; /* out: current pstate index */
+ __u8 pad06[2];
+};
+
+struct nvif_control_pstate_attr_v0 {
+ __u8 version;
+#define NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT (-1)
+ __s8 state; /* in: index of pstate to query
+ * out: pstate identifier
+ */
+ __u8 index; /* in: index of attribute to query
+ * out: index of next attribute, or 0 if no more
+ */
+ __u8 pad03[5];
+ __u32 min;
+ __u32 max;
+ char name[32];
+ char unit[16];
+};
+
+struct nvif_control_pstate_user_v0 {
+ __u8 version;
+#define NVIF_CONTROL_PSTATE_USER_V0_STATE_UNKNOWN (-1)
+#define NVIF_CONTROL_PSTATE_USER_V0_STATE_PERFMON (-2)
+ __s8 ustate; /* in: pstate identifier */
+ __s8 pwrsrc; /* in: target power source */
+ __u8 pad03[5];
+};
+
#endif
diff --git a/drivers/gpu/drm/nouveau/nvif/ioctl.h b/drivers/gpu/drm/nouveau/nvif/ioctl.h
index 67a56711b18c..4cd8e323b23d 100644
--- a/drivers/gpu/drm/nouveau/nvif/ioctl.h
+++ b/drivers/gpu/drm/nouveau/nvif/ioctl.h
@@ -50,6 +50,7 @@ struct nvif_ioctl_new_v0 {
__u32 handle;
/* these class numbers are made up by us, and not nvidia-assigned */
#define NVIF_IOCTL_NEW_V0_PERFCTR 0x0000ffff
+#define NVIF_IOCTL_NEW_V0_CONTROL 0x0000fffe
__u32 oclass;
__u8 data[]; /* class data (class.h) */
};