1 files changed, 296 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/ioctl.c b/drivers/gpu/nvgpu/os/linux/ioctl.c
new file mode 100644
index 00000000..359e5103
--- /dev/null
+++ b/drivers/gpu/nvgpu/os/linux/ioctl.c
@@ -0,0 +1,296 @@
+/*
+ * NVGPU IOCTLs
+ *
+ * Copyright (c) 2011-2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/file.h>
+
+#include <nvgpu/nvgpu_common.h>
+#include <nvgpu/ctxsw_trace.h>
+
+#include "gk20a/gk20a.h"
+#include "gk20a/dbg_gpu_gk20a.h"
+
+#include "ioctl_channel.h"
+#include "ioctl_ctrl.h"
+#include "ioctl_as.h"
+#include "ioctl_tsg.h"
+#include "ioctl_dbg.h"
+#include "module.h"
+#include "os_linux.h"
+#include "ctxsw_trace.h"
+#include "platform_gk20a.h"
+
+#define GK20A_NUM_CDEVS 7
+
+const struct file_operations gk20a_channel_ops = {
+        .owner = THIS_MODULE,
+        .release = gk20a_channel_release,
+        .open = gk20a_channel_open,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl = gk20a_channel_ioctl,
+#endif
+        .unlocked_ioctl = gk20a_channel_ioctl,
+};
+
+static const struct file_operations gk20a_ctrl_ops = {
+        .owner = THIS_MODULE,
+        .release = gk20a_ctrl_dev_release,
+        .open = gk20a_ctrl_dev_open,
+        .unlocked_ioctl = gk20a_ctrl_dev_ioctl,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl = gk20a_ctrl_dev_ioctl,
+#endif
+};
+
+static const struct file_operations gk20a_dbg_ops = {
+        .owner = THIS_MODULE,
+        .release = gk20a_dbg_gpu_dev_release,
+        .open = gk20a_dbg_gpu_dev_open,
+        .unlocked_ioctl = gk20a_dbg_gpu_dev_ioctl,
+        .poll = gk20a_dbg_gpu_dev_poll,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl = gk20a_dbg_gpu_dev_ioctl,
+#endif
+};
+
+static const struct file_operations gk20a_as_ops = {
+        .owner = THIS_MODULE,
+        .release = gk20a_as_dev_release,
+        .open = gk20a_as_dev_open,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl = gk20a_as_dev_ioctl,
+#endif
+        .unlocked_ioctl = gk20a_as_dev_ioctl,
+};
+
+/*
+ * Note: We use a different 'open' to trigger handling of the profiler session.
+ * Most of the code is shared between them...  Though, at some point if the
+ * code does get too tangled trying to handle each in the same path we can
+ * separate them cleanly.
+ */
+static const struct file_operations gk20a_prof_ops = {
+        .owner = THIS_MODULE,
+        .release = gk20a_dbg_gpu_dev_release,
+        .open = gk20a_prof_gpu_dev_open,
+        .unlocked_ioctl = gk20a_dbg_gpu_dev_ioctl,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl = gk20a_dbg_gpu_dev_ioctl,
+#endif
+};
+
+static const struct file_operations gk20a_tsg_ops = {
+        .owner = THIS_MODULE,
+        .release = nvgpu_ioctl_tsg_dev_release,
+        .open = nvgpu_ioctl_tsg_dev_open,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl = nvgpu_ioctl_tsg_dev_ioctl,
+#endif
+        .unlocked_ioctl = nvgpu_ioctl_tsg_dev_ioctl,
+};
+
+#ifdef CONFIG_GK20A_CTXSW_TRACE
+static const struct file_operations gk20a_ctxsw_ops = {
+        .owner = THIS_MODULE,
+        .release = gk20a_ctxsw_dev_release,
+        .open = gk20a_ctxsw_dev_open,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl = gk20a_ctxsw_dev_ioctl,
+#endif
+        .unlocked_ioctl = gk20a_ctxsw_dev_ioctl,
+        .poll = gk20a_ctxsw_dev_poll,
+        .read = gk20a_ctxsw_dev_read,
+        .mmap = gk20a_ctxsw_dev_mmap,
+};
+#endif
+
+static const struct file_operations gk20a_sched_ops = {
+        .owner = THIS_MODULE,
+        .release = gk20a_sched_dev_release,
+        .open = gk20a_sched_dev_open,
+#ifdef CONFIG_COMPAT
+        .compat_ioctl = gk20a_sched_dev_ioctl,
+#endif
+        .unlocked_ioctl = gk20a_sched_dev_ioctl,
+        .poll = gk20a_sched_dev_poll,
+        .read = gk20a_sched_dev_read,
+};
+
+static int gk20a_create_device(
+        struct device *dev, int devno,
+        const char *interface_name, const char *cdev_name,
+        struct cdev *cdev, struct device **out,
+        const struct file_operations *ops,
+        struct class *class)
+{
+        struct device *subdev;
+        int err;
+        struct gk20a *g = gk20a_from_dev(dev);
+
+        nvgpu_log_fn(g, " ");
+
+        cdev_init(cdev, ops);
+        cdev->owner = THIS_MODULE;
+
+        err = cdev_add(cdev, devno, 1);
+        if (err) {
+                dev_err(dev, "failed to add %s cdev\n", cdev_name);
+                return err;
+        }
+
+        subdev = device_create(class, NULL, devno, NULL,
+                interface_name, cdev_name);
+
+        if (IS_ERR(subdev)) {
+                err = PTR_ERR(dev);
+                cdev_del(cdev);
+                dev_err(dev, "failed to create %s device for %s\n",
+                        cdev_name, dev_name(dev));
+                return err;
+        }
+
+        *out = subdev;
+        return 0;
+}
+
+void gk20a_user_deinit(struct device *dev, struct class *class)
+{
+        struct gk20a *g = gk20a_from_dev(dev);
+        struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
+
+        if (l->channel.node) {
+                device_destroy(class, l->channel.cdev.dev);
+                cdev_del(&l->channel.cdev);
+        }
+
+        if (l->as_dev.node) {
+                device_destroy(class, l->as_dev.cdev.dev);
+                cdev_del(&l->as_dev.cdev);
+        }
+
+        if (l->ctrl.node) {
+                device_destroy(class, l->ctrl.cdev.dev);
+                cdev_del(&l->ctrl.cdev);
+        }
+
+        if (l->dbg.node) {
+                device_destroy(class, l->dbg.cdev.dev);
+                cdev_del(&l->dbg.cdev);
+        }
+
+        if (l->prof.node) {
+                device_destroy(class, l->prof.cdev.dev);
+                cdev_del(&l->prof.cdev);
+        }
+
+        if (l->tsg.node) {
+                device_destroy(class, l->tsg.cdev.dev);
+                cdev_del(&l->tsg.cdev);
+        }
+
+        if (l->ctxsw.node) {
+                device_destroy(class, l->ctxsw.cdev.dev);
+                cdev_del(&l->ctxsw.cdev);
+        }
+
+        if (l->sched.node) {
+                device_destroy(class, l->sched.cdev.dev);
+                cdev_del(&l->sched.cdev);
+        }
+
+        if (l->cdev_region)
+                unregister_chrdev_region(l->cdev_region, GK20A_NUM_CDEVS);
+}
+
+int gk20a_user_init(struct device *dev, const char *interface_name,
+                    struct class *class)
+{
+        int err;
+        dev_t devno;
+        struct gk20a *g = gk20a_from_dev(dev);
+        struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
+
+        err = alloc_chrdev_region(&devno, 0, GK20A_NUM_CDEVS, dev_name(dev));
+        if (err) {
+                dev_err(dev, "failed to allocate devno\n");
+                goto fail;
+        }
+        l->cdev_region = devno;
+
+        err = gk20a_create_device(dev, devno++, interface_name, "",
+                                  &l->channel.cdev, &l->channel.node,
+                                  &gk20a_channel_ops,
+                                  class);
+        if (err)
+                goto fail;
+
+        err = gk20a_create_device(dev, devno++, interface_name, "-as",
+                                  &l->as_dev.cdev, &l->as_dev.node,
+                                  &gk20a_as_ops,
+                                  class);
+        if (err)
+                goto fail;
+
+        err = gk20a_create_device(dev, devno++, interface_name, "-ctrl",
+                                  &l->ctrl.cdev, &l->ctrl.node,
+                                  &gk20a_ctrl_ops,
+                                  class);
+        if (err)
+                goto fail;
+
+        err = gk20a_create_device(dev, devno++, interface_name, "-dbg",
+                                  &l->dbg.cdev, &l->dbg.node,
+                                  &gk20a_dbg_ops,
+                                  class);
+        if (err)
+                goto fail;
+
+        err = gk20a_create_device(dev, devno++, interface_name, "-prof",
+                                  &l->prof.cdev, &l->prof.node,
+                                  &gk20a_prof_ops,
+                                  class);
+        if (err)
+                goto fail;
+
+        err = gk20a_create_device(dev, devno++, interface_name, "-tsg",
+                                  &l->tsg.cdev, &l->tsg.node,
+                                  &gk20a_tsg_ops,
+                                  class);
+        if (err)
+                goto fail;
+
+#if defined(CONFIG_GK20A_CTXSW_TRACE)
+        err = gk20a_create_device(dev, devno++, interface_name, "-ctxsw",
+                                  &l->ctxsw.cdev, &l->ctxsw.node,
+                                  &gk20a_ctxsw_ops,
+                                  class);
+        if (err)
+                goto fail;
+#endif
+
+        err = gk20a_create_device(dev, devno++, interface_name, "-sched",
+                                  &l->sched.cdev, &l->sched.node,
+                                  &gk20a_sched_ops,
+                                  class);
+        if (err)
+                goto fail;
+
+        return 0;
+fail:
+        gk20a_user_deinit(dev, &nvgpu_class);
+        return err;
+}