From 9adc49f94bd9df94e7d77b08eb2b6e98d7eb5758 Mon Sep 17 00:00:00 2001 From: Terje Bergstrom Date: Tue, 28 Mar 2017 13:20:42 -0700 Subject: gpu: nvgpu: Move devnode creation to Linux module Move Linux specific code to create devnodes to Linux module. JIRA NVGPU-16 Change-Id: I7f8f74d72f16857973da029b9f949ee8b553eb59 Signed-off-by: Terje Bergstrom Reviewed-on: http://git-master/r/1330801 Reviewed-by: svccoveritychecker GVS: Gerrit_Virtual_Submit --- drivers/gpu/nvgpu/common/linux/ioctl.c | 285 +++++++++++++++++++++++++++++++++ 1 file changed, 285 insertions(+) create mode 100644 drivers/gpu/nvgpu/common/linux/ioctl.c (limited to 'drivers/gpu/nvgpu/common') diff --git a/drivers/gpu/nvgpu/common/linux/ioctl.c b/drivers/gpu/nvgpu/common/linux/ioctl.c new file mode 100644 index 00000000..083d6102 --- /dev/null +++ b/drivers/gpu/nvgpu/common/linux/ioctl.c @@ -0,0 +1,285 @@ +/* + * NVGPU IOCTLs + * + * Copyright (c) 2011-2017, 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 . + */ + +#include + +#include + +#include "gk20a/gk20a.h" +#include "gk20a/dbg_gpu_gk20a.h" +#include "gk20a/ctxsw_trace_gk20a.h" +#include "gk20a/channel_gk20a.h" +#include "gk20a/ctrl_gk20a.h" +#include "gk20a/as_gk20a.h" +#include "gk20a/tsg_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 = gk20a_tsg_dev_release, + .open = gk20a_tsg_dev_open, +#ifdef CONFIG_COMPAT + .compat_ioctl = gk20a_tsg_dev_ioctl, +#endif + .unlocked_ioctl = gk20a_tsg_dev_ioctl, +}; + +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, +}; + +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; + + gk20a_dbg_fn(""); + + 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); + + if (g->channel.node) { + device_destroy(class, g->channel.cdev.dev); + cdev_del(&g->channel.cdev); + } + + if (g->as.node) { + device_destroy(class, g->as.cdev.dev); + cdev_del(&g->as.cdev); + } + + if (g->ctrl.node) { + device_destroy(class, g->ctrl.cdev.dev); + cdev_del(&g->ctrl.cdev); + } + + if (g->dbg.node) { + device_destroy(class, g->dbg.cdev.dev); + cdev_del(&g->dbg.cdev); + } + + if (g->prof.node) { + device_destroy(class, g->prof.cdev.dev); + cdev_del(&g->prof.cdev); + } + + if (g->tsg.node) { + device_destroy(class, g->tsg.cdev.dev); + cdev_del(&g->tsg.cdev); + } + + if (g->ctxsw.node) { + device_destroy(class, g->ctxsw.cdev.dev); + cdev_del(&g->ctxsw.cdev); + } + + if (g->sched.node) { + device_destroy(class, g->sched.cdev.dev); + cdev_del(&g->sched.cdev); + } + + if (g->cdev_region) + unregister_chrdev_region(g->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); + + err = alloc_chrdev_region(&devno, 0, GK20A_NUM_CDEVS, dev_name(dev)); + if (err) { + dev_err(dev, "failed to allocate devno\n"); + goto fail; + } + g->cdev_region = devno; + + err = gk20a_create_device(dev, devno++, interface_name, "", + &g->channel.cdev, &g->channel.node, + &gk20a_channel_ops, + class); + if (err) + goto fail; + + err = gk20a_create_device(dev, devno++, interface_name, "-as", + &g->as.cdev, &g->as.node, + &gk20a_as_ops, + class); + if (err) + goto fail; + + err = gk20a_create_device(dev, devno++, interface_name, "-ctrl", + &g->ctrl.cdev, &g->ctrl.node, + &gk20a_ctrl_ops, + class); + if (err) + goto fail; + + err = gk20a_create_device(dev, devno++, interface_name, "-dbg", + &g->dbg.cdev, &g->dbg.node, + &gk20a_dbg_ops, + class); + if (err) + goto fail; + + err = gk20a_create_device(dev, devno++, interface_name, "-prof", + &g->prof.cdev, &g->prof.node, + &gk20a_prof_ops, + class); + if (err) + goto fail; + + err = gk20a_create_device(dev, devno++, interface_name, "-tsg", + &g->tsg.cdev, &g->tsg.node, + &gk20a_tsg_ops, + class); + if (err) + goto fail; + +#ifdef CONFIG_GK20A_CTXSW_TRACE + err = gk20a_create_device(dev, devno++, interface_name, "-ctxsw", + &g->ctxsw.cdev, &g->ctxsw.node, + &gk20a_ctxsw_ops, + class); + if (err) + goto fail; +#endif + + err = gk20a_create_device(dev, devno++, interface_name, "-sched", + &g->sched.cdev, &g->sched.node, + &gk20a_sched_ops, + class); + if (err) + goto fail; + + return 0; +fail: + gk20a_user_deinit(dev, &nvgpu_class); + return err; +} -- cgit v1.2.2