From 2a2c16af5f9f1ccfc93a13e820d5381e5c881e92 Mon Sep 17 00:00:00 2001 From: Terje Bergstrom Date: Wed, 18 Apr 2018 12:59:00 -0700 Subject: gpu: nvgpu: Move Linux files away from common Move all Linux source code files to drivers/gpu/nvgpu/os/linux from drivers/gpu/nvgpu/common/linux. This changes the meaning of common to be OS independent. JIRA NVGPU-598 JIRA NVGPU-601 Change-Id: Ib7f2a43d3688bb0d0b7dcc48469a6783fd988ce9 Signed-off-by: Terje Bergstrom Reviewed-on: https://git-master.nvidia.com/r/1747714 Reviewed-by: mobile promotions Tested-by: mobile promotions --- drivers/gpu/nvgpu/common/linux/ioctl_clk_arb.c | 562 ------------------------- 1 file changed, 562 deletions(-) delete mode 100644 drivers/gpu/nvgpu/common/linux/ioctl_clk_arb.c (limited to 'drivers/gpu/nvgpu/common/linux/ioctl_clk_arb.c') diff --git a/drivers/gpu/nvgpu/common/linux/ioctl_clk_arb.c b/drivers/gpu/nvgpu/common/linux/ioctl_clk_arb.c deleted file mode 100644 index a7c6a607..00000000 --- a/drivers/gpu/nvgpu/common/linux/ioctl_clk_arb.c +++ /dev/null @@ -1,562 +0,0 @@ -/* - * Copyright (c) 2016-2018, NVIDIA CORPORATION. All rights reserved. - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that 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 -#include -#include -#ifdef CONFIG_DEBUG_FS -#include -#endif -#include - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include "gk20a/gk20a.h" -#include "clk/clk.h" -#include "pstate/pstate.h" -#include "lpwr/lpwr.h" -#include "volt/volt.h" - -#ifdef CONFIG_DEBUG_FS -#include "common/linux/os_linux.h" -#endif - -static int nvgpu_clk_arb_release_completion_dev(struct inode *inode, - struct file *filp) -{ - struct nvgpu_clk_dev *dev = filp->private_data; - struct nvgpu_clk_session *session = dev->session; - - - clk_arb_dbg(session->g, " "); - - nvgpu_ref_put(&session->refcount, nvgpu_clk_arb_free_session); - nvgpu_ref_put(&dev->refcount, nvgpu_clk_arb_free_fd); - return 0; -} - -static inline unsigned int nvgpu_convert_poll_mask(unsigned int nvgpu_poll_mask) -{ - unsigned int poll_mask = 0; - - if (nvgpu_poll_mask & NVGPU_POLLIN) - poll_mask |= POLLIN; - if (nvgpu_poll_mask & NVGPU_POLLPRI) - poll_mask |= POLLPRI; - if (nvgpu_poll_mask & NVGPU_POLLOUT) - poll_mask |= POLLOUT; - if (nvgpu_poll_mask & NVGPU_POLLRDNORM) - poll_mask |= POLLRDNORM; - if (nvgpu_poll_mask & NVGPU_POLLHUP) - poll_mask |= POLLHUP; - - return poll_mask; -} - -static unsigned int nvgpu_clk_arb_poll_dev(struct file *filp, poll_table *wait) -{ - struct nvgpu_clk_dev *dev = filp->private_data; - - clk_arb_dbg(dev->session->g, " "); - - poll_wait(filp, &dev->readout_wq.wq, wait); - return nvgpu_convert_poll_mask(nvgpu_atomic_xchg(&dev->poll_mask, 0)); -} - -void nvgpu_clk_arb_event_post_event(struct nvgpu_clk_dev *dev) -{ - nvgpu_cond_broadcast_interruptible(&dev->readout_wq); -} - -static int nvgpu_clk_arb_release_event_dev(struct inode *inode, - struct file *filp) -{ - struct nvgpu_clk_dev *dev = filp->private_data; - struct nvgpu_clk_session *session = dev->session; - struct nvgpu_clk_arb *arb; - - arb = session->g->clk_arb; - - clk_arb_dbg(session->g, " "); - - if (arb) { - nvgpu_spinlock_acquire(&arb->users_lock); - nvgpu_list_del(&dev->link); - nvgpu_spinlock_release(&arb->users_lock); - nvgpu_clk_notification_queue_free(arb->g, &dev->queue); - } - - nvgpu_ref_put(&session->refcount, nvgpu_clk_arb_free_session); - nvgpu_ref_put(&dev->refcount, nvgpu_clk_arb_free_fd); - - return 0; -} - -static inline u32 nvgpu_convert_gpu_event(u32 nvgpu_event) -{ - u32 nvgpu_gpu_event; - - switch (nvgpu_event) { - case NVGPU_EVENT_VF_UPDATE: - nvgpu_gpu_event = NVGPU_GPU_EVENT_VF_UPDATE; - break; - case NVGPU_EVENT_ALARM_TARGET_VF_NOT_POSSIBLE: - nvgpu_gpu_event = NVGPU_GPU_EVENT_ALARM_TARGET_VF_NOT_POSSIBLE; - break; - case NVGPU_EVENT_ALARM_LOCAL_TARGET_VF_NOT_POSSIBLE: - nvgpu_gpu_event = NVGPU_GPU_EVENT_ALARM_LOCAL_TARGET_VF_NOT_POSSIBLE; - break; - case NVGPU_EVENT_ALARM_CLOCK_ARBITER_FAILED: - nvgpu_gpu_event = NVGPU_GPU_EVENT_ALARM_CLOCK_ARBITER_FAILED; - break; - case NVGPU_EVENT_ALARM_VF_TABLE_UPDATE_FAILED: - nvgpu_gpu_event = NVGPU_GPU_EVENT_ALARM_VF_TABLE_UPDATE_FAILED; - break; - case NVGPU_EVENT_ALARM_THERMAL_ABOVE_THRESHOLD: - nvgpu_gpu_event = NVGPU_GPU_EVENT_ALARM_THERMAL_ABOVE_THRESHOLD; - break; - case NVGPU_EVENT_ALARM_POWER_ABOVE_THRESHOLD: - nvgpu_gpu_event = NVGPU_GPU_EVENT_ALARM_POWER_ABOVE_THRESHOLD; - break; - case NVGPU_EVENT_ALARM_GPU_LOST: - nvgpu_gpu_event = NVGPU_GPU_EVENT_ALARM_GPU_LOST; - break; - default: - /* Control shouldn't come here */ - nvgpu_gpu_event = NVGPU_GPU_EVENT_ALARM_GPU_LOST + 1; - break; - } - return nvgpu_gpu_event; -} - -static inline u32 __pending_event(struct nvgpu_clk_dev *dev, - struct nvgpu_gpu_event_info *info) { - - u32 tail, head; - u32 events = 0; - struct nvgpu_clk_notification *p_notif; - - tail = nvgpu_atomic_read(&dev->queue.tail); - head = nvgpu_atomic_read(&dev->queue.head); - - head = (tail - head) < dev->queue.size ? head : tail - dev->queue.size; - - if (_WRAPGTEQ(tail, head) && info) { - head++; - p_notif = &dev->queue.notifications[head % dev->queue.size]; - events |= nvgpu_convert_gpu_event(p_notif->notification); - info->event_id = ffs(events) - 1; - info->timestamp = p_notif->timestamp; - nvgpu_atomic_set(&dev->queue.head, head); - } - - return events; -} - -static ssize_t nvgpu_clk_arb_read_event_dev(struct file *filp, char __user *buf, - size_t size, loff_t *off) -{ - struct nvgpu_clk_dev *dev = filp->private_data; - struct nvgpu_gpu_event_info info; - ssize_t err; - - clk_arb_dbg(dev->session->g, - "filp=%p, buf=%p, size=%zu", filp, buf, size); - - if ((size - *off) < sizeof(info)) - return 0; - - memset(&info, 0, sizeof(info)); - /* Get the oldest event from the queue */ - while (!__pending_event(dev, &info)) { - if (filp->f_flags & O_NONBLOCK) - return -EAGAIN; - err = NVGPU_COND_WAIT_INTERRUPTIBLE(&dev->readout_wq, - __pending_event(dev, &info), 0); - if (err) - return err; - if (info.timestamp) - break; - } - - if (copy_to_user(buf + *off, &info, sizeof(info))) - return -EFAULT; - - return sizeof(info); -} - -static int nvgpu_clk_arb_set_event_filter(struct nvgpu_clk_dev *dev, - struct nvgpu_gpu_set_event_filter_args *args) -{ - struct gk20a *g = dev->session->g; - u32 mask; - - nvgpu_log(g, gpu_dbg_fn, " "); - - if (args->flags) - return -EINVAL; - - if (args->size != 1) - return -EINVAL; - - if (copy_from_user(&mask, (void __user *) args->buffer, - args->size * sizeof(u32))) - return -EFAULT; - - /* update alarm mask */ - nvgpu_atomic_set(&dev->enabled_mask, mask); - - return 0; -} - -static long nvgpu_clk_arb_ioctl_event_dev(struct file *filp, unsigned int cmd, - unsigned long arg) -{ - struct nvgpu_clk_dev *dev = filp->private_data; - struct gk20a *g = dev->session->g; - u8 buf[NVGPU_EVENT_IOCTL_MAX_ARG_SIZE]; - int err = 0; - - nvgpu_log(g, gpu_dbg_fn, "nr=%d", _IOC_NR(cmd)); - - if ((_IOC_TYPE(cmd) != NVGPU_EVENT_IOCTL_MAGIC) || (_IOC_NR(cmd) == 0) - || (_IOC_NR(cmd) > NVGPU_EVENT_IOCTL_LAST)) - return -EINVAL; - - BUG_ON(_IOC_SIZE(cmd) > NVGPU_EVENT_IOCTL_MAX_ARG_SIZE); - - memset(buf, 0, sizeof(buf)); - if (_IOC_DIR(cmd) & _IOC_WRITE) { - if (copy_from_user(buf, (void __user *) arg, _IOC_SIZE(cmd))) - return -EFAULT; - } - - switch (cmd) { - case NVGPU_EVENT_IOCTL_SET_FILTER: - err = nvgpu_clk_arb_set_event_filter(dev, - (struct nvgpu_gpu_set_event_filter_args *)buf); - break; - default: - nvgpu_warn(g, "unrecognized event ioctl cmd: 0x%x", cmd); - err = -ENOTTY; - } - - if ((err == 0) && (_IOC_DIR(cmd) & _IOC_READ)) - err = copy_to_user((void __user *) arg, buf, _IOC_SIZE(cmd)); - - return err; -} - -static const struct file_operations completion_dev_ops = { - .owner = THIS_MODULE, - .release = nvgpu_clk_arb_release_completion_dev, - .poll = nvgpu_clk_arb_poll_dev, -}; - -static const struct file_operations event_dev_ops = { - .owner = THIS_MODULE, - .release = nvgpu_clk_arb_release_event_dev, - .poll = nvgpu_clk_arb_poll_dev, - .read = nvgpu_clk_arb_read_event_dev, -#ifdef CONFIG_COMPAT - .compat_ioctl = nvgpu_clk_arb_ioctl_event_dev, -#endif - .unlocked_ioctl = nvgpu_clk_arb_ioctl_event_dev, -}; - -static int nvgpu_clk_arb_install_fd(struct gk20a *g, - struct nvgpu_clk_session *session, - const struct file_operations *fops, - struct nvgpu_clk_dev **_dev) -{ - struct file *file; - int fd; - int err; - int status; - char name[64]; - struct nvgpu_clk_dev *dev; - - clk_arb_dbg(g, " "); - - dev = nvgpu_kzalloc(g, sizeof(*dev)); - if (!dev) - return -ENOMEM; - - status = nvgpu_clk_notification_queue_alloc(g, &dev->queue, - DEFAULT_EVENT_NUMBER); - if (status < 0) { - err = status; - goto fail; - } - - fd = get_unused_fd_flags(O_RDWR); - if (fd < 0) { - err = fd; - goto fail; - } - - snprintf(name, sizeof(name), "%s-clk-fd%d", g->name, fd); - file = anon_inode_getfile(name, fops, dev, O_RDWR); - if (IS_ERR(file)) { - err = PTR_ERR(file); - goto fail_fd; - } - - fd_install(fd, file); - - nvgpu_cond_init(&dev->readout_wq); - - nvgpu_atomic_set(&dev->poll_mask, 0); - - dev->session = session; - nvgpu_ref_init(&dev->refcount); - - nvgpu_ref_get(&session->refcount); - - *_dev = dev; - - return fd; - -fail_fd: - put_unused_fd(fd); -fail: - nvgpu_kfree(g, dev); - - return err; -} - -int nvgpu_clk_arb_install_event_fd(struct gk20a *g, - struct nvgpu_clk_session *session, int *event_fd, u32 alarm_mask) -{ - struct nvgpu_clk_arb *arb = g->clk_arb; - struct nvgpu_clk_dev *dev; - int fd; - - clk_arb_dbg(g, " "); - - fd = nvgpu_clk_arb_install_fd(g, session, &event_dev_ops, &dev); - if (fd < 0) - return fd; - - /* TODO: alarm mask needs to be set to default value to prevent - * failures of legacy tests. This will be removed when sanity is - * updated - */ - if (alarm_mask) - nvgpu_atomic_set(&dev->enabled_mask, alarm_mask); - else - nvgpu_atomic_set(&dev->enabled_mask, EVENT(VF_UPDATE)); - - dev->arb_queue_head = nvgpu_atomic_read(&arb->notification_queue.head); - - nvgpu_spinlock_acquire(&arb->users_lock); - nvgpu_list_add_tail(&dev->link, &arb->users); - nvgpu_spinlock_release(&arb->users_lock); - - *event_fd = fd; - - return 0; -} - -int nvgpu_clk_arb_install_request_fd(struct gk20a *g, - struct nvgpu_clk_session *session, int *request_fd) -{ - struct nvgpu_clk_dev *dev; - int fd; - - clk_arb_dbg(g, " "); - - fd = nvgpu_clk_arb_install_fd(g, session, &completion_dev_ops, &dev); - if (fd < 0) - return fd; - - *request_fd = fd; - - return 0; -} - -int nvgpu_clk_arb_commit_request_fd(struct gk20a *g, - struct nvgpu_clk_session *session, int request_fd) -{ - struct nvgpu_clk_arb *arb = g->clk_arb; - struct nvgpu_clk_dev *dev; - struct fd fd; - int err = 0; - - clk_arb_dbg(g, " "); - - fd = fdget(request_fd); - if (!fd.file) - return -EINVAL; - - if (fd.file->f_op != &completion_dev_ops) { - err = -EINVAL; - goto fdput_fd; - } - - dev = (struct nvgpu_clk_dev *) fd.file->private_data; - - if (!dev || dev->session != session) { - err = -EINVAL; - goto fdput_fd; - } - nvgpu_ref_get(&dev->refcount); - nvgpu_spinlock_acquire(&session->session_lock); - nvgpu_list_add(&dev->node, &session->targets); - nvgpu_spinlock_release(&session->session_lock); - nvgpu_clk_arb_worker_enqueue(g, &arb->update_arb_work_item); - -fdput_fd: - fdput(fd); - return err; -} - -int nvgpu_clk_arb_set_session_target_mhz(struct nvgpu_clk_session *session, - int request_fd, u32 api_domain, u16 target_mhz) -{ - struct nvgpu_clk_dev *dev; - struct fd fd; - int err = 0; - - clk_arb_dbg(session->g, - "domain=0x%08x target_mhz=%u", api_domain, target_mhz); - - fd = fdget(request_fd); - if (!fd.file) - return -EINVAL; - - if (fd.file->f_op != &completion_dev_ops) { - err = -EINVAL; - goto fdput_fd; - } - - dev = fd.file->private_data; - if (!dev || dev->session != session) { - err = -EINVAL; - goto fdput_fd; - } - - switch (api_domain) { - case NVGPU_CLK_DOMAIN_MCLK: - dev->mclk_target_mhz = target_mhz; - break; - - case NVGPU_CLK_DOMAIN_GPCCLK: - dev->gpc2clk_target_mhz = target_mhz * 2ULL; - break; - - default: - err = -EINVAL; - } - -fdput_fd: - fdput(fd); - return err; -} - -u32 nvgpu_clk_arb_get_arbiter_clk_domains(struct gk20a *g) -{ - u32 clk_domains = g->ops.clk_arb.get_arbiter_clk_domains(g); - u32 api_domains = 0; - - if (clk_domains & CTRL_CLK_DOMAIN_GPC2CLK) - api_domains |= BIT(NVGPU_GPU_CLK_DOMAIN_GPCCLK); - - if (clk_domains & CTRL_CLK_DOMAIN_MCLK) - api_domains |= BIT(NVGPU_GPU_CLK_DOMAIN_MCLK); - - return api_domains; -} - -#ifdef CONFIG_DEBUG_FS -static int nvgpu_clk_arb_stats_show(struct seq_file *s, void *unused) -{ - struct gk20a *g = s->private; - struct nvgpu_clk_arb *arb = g->clk_arb; - struct nvgpu_clk_arb_debug *debug; - - u64 num; - s64 tmp, avg, std, max, min; - - debug = NV_ACCESS_ONCE(arb->debug); - /* Make copy of structure and ensure no reordering */ - nvgpu_smp_rmb(); - if (!debug) - return -EINVAL; - - std = debug->switch_std; - avg = debug->switch_avg; - max = debug->switch_max; - min = debug->switch_min; - num = debug->switch_num; - - tmp = std; - do_div(tmp, num); - seq_printf(s, "Number of transitions: %lld\n", - num); - seq_printf(s, "max / min : %lld / %lld usec\n", - max, min); - seq_printf(s, "avg / std : %lld / %ld usec\n", - avg, int_sqrt(tmp)); - - return 0; -} - -static int nvgpu_clk_arb_stats_open(struct inode *inode, struct file *file) -{ - return single_open(file, nvgpu_clk_arb_stats_show, inode->i_private); -} - -static const struct file_operations nvgpu_clk_arb_stats_fops = { - .open = nvgpu_clk_arb_stats_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - - -int nvgpu_clk_arb_debugfs_init(struct gk20a *g) -{ - struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g); - struct dentry *gpu_root = l->debugfs; - struct dentry *d; - - nvgpu_log(g, gpu_dbg_info, "g=%p", g); - - d = debugfs_create_file( - "arb_stats", - S_IRUGO, - gpu_root, - g, - &nvgpu_clk_arb_stats_fops); - if (!d) - return -ENOMEM; - - return 0; -} -#endif -- cgit v1.2.2