It can be useful to have a single ioctl to create a context with all
the initial parameters instead of a series of create + setparam + setparam
ioctls. This extension to create context allows any of the parameters
to be passed in as a linked list to be applied to the newly constructed
context.
Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
---
drivers/gpu/drm/i915/i915_drv.c | 2 +-
drivers/gpu/drm/i915/i915_gem_context.c | 172 +++++++++++++++---------
include/uapi/drm/i915_drm.h | 50 ++++---
3 files changed, 137 insertions(+), 87 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 56bd087f1c4e..bab0d45dd7ab 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -2992,7 +2992,7 @@ static const struct drm_ioctl_desc i915_ioctls[] = {
DRM_IOCTL_DEF_DRV(I915_SET_SPRITE_COLORKEY,
intel_sprite_set_colorkey_ioctl, DRM_MASTER),
DRM_IOCTL_DEF_DRV(I915_GET_SPRITE_COLORKEY, drm_noop, DRM_MASTER),
DRM_IOCTL_DEF_DRV(I915_GEM_WAIT, i915_gem_wait_ioctl,
DRM_AUTH|DRM_RENDER_ALLOW),
- DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE,
i915_gem_context_create_ioctl, DRM_RENDER_ALLOW),
+ DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_CREATE_EXT,
i915_gem_context_create_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GEM_CONTEXT_DESTROY,
i915_gem_context_destroy_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_REG_READ, i915_reg_read_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(I915_GET_RESET_STATS,
i915_gem_context_reset_stats_ioctl, DRM_RENDER_ALLOW),
diff --git a/drivers/gpu/drm/i915/i915_gem_context.c
b/drivers/gpu/drm/i915/i915_gem_context.c
index f707241dbc78..ec5e3e1c6402 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -86,9 +86,12 @@
*/
#include <linux/log2.h>
+
#include <drm/i915_drm.h>
+
#include "i915_drv.h"
#include "i915_trace.h"
+#include "i915_user_extensions.h"
#include "intel_workarounds.h"
#define ALL_L3_SLICES(dev) (1 << NUM_L3_SLICES(dev)) - 1
@@ -884,6 +887,94 @@ static int set_ppgtt(struct i915_gem_context *ctx, u32 id)
return err;
}
+static int ctx_setparam(struct i915_gem_context *ctx,
+ const struct drm_i915_gem_context_param *args)
+{
+ int ret = 0;
+
+ switch (args->param) {
+ case I915_CONTEXT_PARAM_NO_ZEROMAP:
+ if (args->size)
+ ret = -EINVAL;
+ else if (args->value)
+ set_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags);
+ else
+ clear_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags);
+ break;
+
+ case I915_CONTEXT_PARAM_NO_ERROR_CAPTURE:
+ if (args->size)
+ ret = -EINVAL;
+ else if (args->value)
+ i915_gem_context_set_no_error_capture(ctx);
+ else
+ i915_gem_context_clear_no_error_capture(ctx);
+ break;
+
+ case I915_CONTEXT_PARAM_BANNABLE:
+ if (args->size)
+ ret = -EINVAL;
+ else if (!capable(CAP_SYS_ADMIN) && !args->value)
+ ret = -EPERM;
+ else if (args->value)
+ i915_gem_context_set_bannable(ctx);
+ else
+ i915_gem_context_clear_bannable(ctx);
+ break;
+
+ case I915_CONTEXT_PARAM_PRIORITY:
+ {
+ s64 priority = args->value;
+
+ if (args->size)
+ ret = -EINVAL;
+ else if (!(ctx->i915->caps.scheduler &
I915_SCHEDULER_CAP_PRIORITY))
+ ret = -ENODEV;
+ else if (priority > I915_CONTEXT_MAX_USER_PRIORITY ||
+ priority < I915_CONTEXT_MIN_USER_PRIORITY)
+ ret = -EINVAL;
+ else if (priority > I915_CONTEXT_DEFAULT_PRIORITY &&
+ !capable(CAP_SYS_NICE))
+ ret = -EPERM;
+ else
+ ctx->sched.priority =
+ I915_USER_PRIORITY(priority);
+ }
+ break;
+
+ case I915_CONTEXT_PARAM_VM:
+ if (args->size)
+ ret = -EINVAL;
+ else if (upper_32_bits(args->value))
+ ret = -EINVAL;
+ else
+ ret = set_ppgtt(ctx, lower_32_bits(args->value));
+ break;
+
+ case I915_CONTEXT_PARAM_BAN_PERIOD:
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static int create_setparam(struct i915_user_extension *ext, void *data)
+{
+ const struct drm_i915_gem_context_create_ext_setparam *args =
+ container_of(ext, typeof(*args), base);
+
+ if (args->setparam.ctx_id)
+ return -EINVAL;
+
+ return ctx_setparam(data, &args->setparam);
+}
+
+static const i915_user_extension_fn create_extensions[] = {
+ [I915_CONTEXT_CREATE_EXT_SETPARAM] = create_setparam,
+};
+
static bool client_is_banned(struct drm_i915_file_private *file_priv)
{
return atomic_read(&file_priv->ban_score) >= I915_CLIENT_SCORE_BANNED;
@@ -893,7 +984,7 @@ int i915_gem_context_create_ioctl(struct drm_device *dev,
void *data,
struct drm_file *file)
{
struct drm_i915_private *dev_priv = to_i915(dev);
- struct drm_i915_gem_context_create *args = data;
+ struct drm_i915_gem_context_create_ext *args = data;
struct drm_i915_file_private *file_priv = file->driver_priv;
struct i915_gem_context *ctx;
int ret;
@@ -901,7 +992,7 @@ int i915_gem_context_create_ioctl(struct drm_device *dev,
void *data,
if (!DRIVER_CAPS(dev_priv)->has_logical_contexts)
return -ENODEV;
- if (args->pad != 0)
+ if (args->flags)
return -EINVAL;
if (client_is_banned(file_priv)) {
@@ -923,6 +1014,16 @@ int i915_gem_context_create_ioctl(struct drm_device *dev,
void *data,
GEM_BUG_ON(i915_gem_context_is_kernel(ctx));
+ ret = i915_user_extensions(u64_to_user_ptr(args->extensions),
+ create_extensions,
+ ARRAY_SIZE(create_extensions),
+ ctx);
+ if (ret) {
+ idr_remove(&file_priv->context_idr, ctx->user_handle);
+ context_close(ctx);
+ return ret;
+ }
+
args->ctx_id = ctx->user_handle;
DRM_DEBUG("HW context %d created\n", args->ctx_id);
@@ -1014,76 +1115,13 @@ int i915_gem_context_setparam_ioctl(struct drm_device
*dev, void *data,
struct drm_i915_file_private *file_priv = file->driver_priv;
struct drm_i915_gem_context_param *args = data;
struct i915_gem_context *ctx;
- int ret = 0;
+ int ret;
ctx = i915_gem_context_lookup(file_priv, args->ctx_id);
if (!ctx)
return -ENOENT;
- switch (args->param) {
- case I915_CONTEXT_PARAM_BAN_PERIOD:
- ret = -EINVAL;
- break;
- case I915_CONTEXT_PARAM_NO_ZEROMAP:
- if (args->size)
- ret = -EINVAL;
- else if (args->value)
- set_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags);
- else
- clear_bit(UCONTEXT_NO_ZEROMAP, &ctx->user_flags);
- break;
- case I915_CONTEXT_PARAM_NO_ERROR_CAPTURE:
- if (args->size)
- ret = -EINVAL;
- else if (args->value)
- i915_gem_context_set_no_error_capture(ctx);
- else
- i915_gem_context_clear_no_error_capture(ctx);
- break;
- case I915_CONTEXT_PARAM_BANNABLE:
- if (args->size)
- ret = -EINVAL;
- else if (!capable(CAP_SYS_ADMIN) && !args->value)
- ret = -EPERM;
- else if (args->value)
- i915_gem_context_set_bannable(ctx);
- else
- i915_gem_context_clear_bannable(ctx);
- break;
-
- case I915_CONTEXT_PARAM_PRIORITY:
- {
- s64 priority = args->value;
-
- if (args->size)
- ret = -EINVAL;
- else if (!(to_i915(dev)->caps.scheduler &
I915_SCHEDULER_CAP_PRIORITY))
- ret = -ENODEV;
- else if (priority > I915_CONTEXT_MAX_USER_PRIORITY ||
- priority < I915_CONTEXT_MIN_USER_PRIORITY)
- ret = -EINVAL;
- else if (priority > I915_CONTEXT_DEFAULT_PRIORITY &&
- !capable(CAP_SYS_NICE))
- ret = -EPERM;
- else
- ctx->sched.priority =
- I915_USER_PRIORITY(priority);
- }
- break;
-
- case I915_CONTEXT_PARAM_VM:
- if (args->size)
- ret = -EINVAL;
- else if (upper_32_bits(args->value))
- ret = -EINVAL;
- else
- ret = set_ppgtt(ctx, lower_32_bits(args->value));
- break;
-
- default:
- ret = -EINVAL;
- break;
- }
+ ret = ctx_setparam(ctx, args);
i915_gem_context_put(ctx);
return ret;
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index eb19cf8a77ef..704e9d2fe2d6 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -389,6 +389,7 @@ typedef struct _drm_i915_sarea {
#define DRM_IOCTL_I915_GET_SPRITE_COLORKEY DRM_IOWR(DRM_COMMAND_BASE +
DRM_I915_GET_SPRITE_COLORKEY, struct drm_intel_sprite_colorkey)
#define DRM_IOCTL_I915_GEM_WAIT DRM_IOWR(DRM_COMMAND_BASE +
DRM_I915_GEM_WAIT, struct drm_i915_gem_wait)
#define DRM_IOCTL_I915_GEM_CONTEXT_CREATE DRM_IOWR (DRM_COMMAND_BASE +
DRM_I915_GEM_CONTEXT_CREATE, struct drm_i915_gem_context_create)
+#define DRM_IOCTL_I915_GEM_CONTEXT_CREATE_EXT DRM_IOWR (DRM_COMMAND_BASE +
DRM_I915_GEM_CONTEXT_CREATE, struct drm_i915_gem_context_create_ext)
#define DRM_IOCTL_I915_GEM_CONTEXT_DESTROY DRM_IOW (DRM_COMMAND_BASE +
DRM_I915_GEM_CONTEXT_DESTROY, struct drm_i915_gem_context_destroy)
#define DRM_IOCTL_I915_REG_READ DRM_IOWR
(DRM_COMMAND_BASE + DRM_I915_REG_READ, struct drm_i915_reg_read)
#define DRM_IOCTL_I915_GET_RESET_STATS DRM_IOWR (DRM_COMMAND_BASE +
DRM_I915_GET_RESET_STATS, struct drm_i915_reset_stats)
@@ -1436,11 +1437,39 @@ struct drm_i915_gem_wait {
};
struct drm_i915_gem_context_create {
- /* output: id of new context*/
- __u32 ctx_id;
+ __u32 ctx_id; /* output: id of new context*/
__u32 pad;
};
+struct drm_i915_gem_context_create_ext {
+ __u32 ctx_id; /* output: id of new context*/
+ __u32 flags;
+ __u64 extensions;
+};
+
+struct drm_i915_gem_context_param {
+ __u32 ctx_id;
+ __u32 size;
+ __u64 param;
+#define I915_CONTEXT_PARAM_BAN_PERIOD 0x1
+#define I915_CONTEXT_PARAM_NO_ZEROMAP 0x2
+#define I915_CONTEXT_PARAM_GTT_SIZE 0x3
+#define I915_CONTEXT_PARAM_NO_ERROR_CAPTURE 0x4
+#define I915_CONTEXT_PARAM_BANNABLE 0x5
+#define I915_CONTEXT_PARAM_PRIORITY 0x6
+#define I915_CONTEXT_MAX_USER_PRIORITY 1023 /* inclusive */
+#define I915_CONTEXT_DEFAULT_PRIORITY 0
+#define I915_CONTEXT_MIN_USER_PRIORITY -1023 /* inclusive */
+#define I915_CONTEXT_PARAM_VM 0x7
+ __u64 value;
+};
+
+struct drm_i915_gem_context_create_ext_setparam {
+#define I915_CONTEXT_CREATE_EXT_SETPARAM 0
+ struct i915_user_extension base;
+ struct drm_i915_gem_context_param setparam;
+};
+
struct drm_i915_gem_context_destroy {
__u32 ctx_id;
__u32 pad;
@@ -1503,23 +1532,6 @@ struct drm_i915_gem_userptr {
__u32 handle;
};
-struct drm_i915_gem_context_param {
- __u32 ctx_id;
- __u32 size;
- __u64 param;
-#define I915_CONTEXT_PARAM_BAN_PERIOD 0x1
-#define I915_CONTEXT_PARAM_NO_ZEROMAP 0x2
-#define I915_CONTEXT_PARAM_GTT_SIZE 0x3
-#define I915_CONTEXT_PARAM_NO_ERROR_CAPTURE 0x4
-#define I915_CONTEXT_PARAM_BANNABLE 0x5
-#define I915_CONTEXT_PARAM_PRIORITY 0x6
-#define I915_CONTEXT_MAX_USER_PRIORITY 1023 /* inclusive */
-#define I915_CONTEXT_DEFAULT_PRIORITY 0
-#define I915_CONTEXT_MIN_USER_PRIORITY -1023 /* inclusive */
-#define I915_CONTEXT_PARAM_VM 0x7
- __u64 value;
-};
-
enum drm_i915_oa_format {
I915_OA_FORMAT_A13 = 1, /* HSW only */
I915_OA_FORMAT_A29, /* HSW only */
--
2.20.1
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