Add new UABI and implementation of PERFCNTR_CONFIG ioctl. A bit more work is required to configure the pwrup_reglist for the GMU to restore SELect regs on exist of IFPC, before we can stop disabling IFPC while global counter collection. This will follow in a later commit, but will be transparent to userspace.
Signed-off-by: Rob Clark <[email protected]> --- drivers/gpu/drm/msm/msm_drv.c | 1 + drivers/gpu/drm/msm/msm_drv.h | 2 + drivers/gpu/drm/msm/msm_gpu.h | 3 + drivers/gpu/drm/msm/msm_perfcntr.c | 510 +++++++++++++++++++++++++++++ drivers/gpu/drm/msm/msm_perfcntr.h | 51 +++ include/uapi/drm/msm_drm.h | 48 +++ 6 files changed, 615 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 3066547f319b..0a7fc06113e0 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -801,6 +801,7 @@ static const struct drm_ioctl_desc msm_ioctls[] = { DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_CLOSE, msm_ioctl_submitqueue_close, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_SUBMITQUEUE_QUERY, msm_ioctl_submitqueue_query, DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(MSM_VM_BIND, msm_ioctl_vm_bind, DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(MSM_PERFCNTR_CONFIG, msm_ioctl_perfcntr_config, DRM_RENDER_ALLOW), }; static void msm_show_fdinfo(struct drm_printer *p, struct drm_file *file) diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index f00b2e7aeb91..204e140ac8e9 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -237,6 +237,8 @@ int msm_ioctl_vm_bind(struct drm_device *dev, void *data, int msm_perfcntr_resume(struct msm_gpu *gpu); void msm_perfcntr_suspend(struct msm_gpu *gpu); +int msm_ioctl_perfcntr_config(struct drm_device *dev, void *data, + struct drm_file *file); struct msm_perfcntr_state * msm_perfcntr_init(struct msm_gpu *gpu); void msm_perfcntr_cleanup(struct msm_gpu *gpu); diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index 92710da5009b..67f1e84eb631 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -353,6 +353,9 @@ struct msm_perfcntr_state { /** @stream: current global counter stream if active */ struct msm_perfcntr_stream *stream; + /** @sel_seqno: counter for sel_fence */ + uint32_t sel_seqno; + /** * @groups: Global perfcntr stream group state. * diff --git a/drivers/gpu/drm/msm/msm_perfcntr.c b/drivers/gpu/drm/msm/msm_perfcntr.c index 09e6aa4b6620..39bec201d5c9 100644 --- a/drivers/gpu/drm/msm/msm_perfcntr.c +++ b/drivers/gpu/drm/msm/msm_perfcntr.c @@ -3,13 +3,44 @@ * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. */ +#include "drm/drm_file.h" +#include "drm/msm_drm.h" + +#include "linux/anon_inodes.h" +#include "linux/gfp_types.h" +#include "linux/poll.h" +#include "linux/slab.h" + #include "msm_drv.h" #include "msm_gpu.h" #include "msm_perfcntr.h" +#include "adreno/adreno_gpu.h" + +/* space used: */ +#define fifo_count(stream) \ + (CIRC_CNT((stream)->fifo.head, (stream)->fifo.tail, (stream)->fifo_size)) +#define fifo_count_to_end(stream) \ + (CIRC_CNT_TO_END((stream)->fifo.head, (stream)->fifo.tail, (stream)->fifo_size)) +/* space available: */ +#define fifo_space(stream) \ + (CIRC_SPACE((stream)->fifo.head, (stream)->fifo.tail, (stream)->fifo_size)) + static int msm_perfcntr_resume_locked(struct msm_perfcntr_stream *stream) { + if (!stream) + return 0; + + /* Reprogram SEL regs on highest priority rb: */ + struct msm_ringbuffer *ring = stream->gpu->rb[0]; + + queue_work(ring->sched.submit_wq, &stream->sel_work); + + hrtimer_start(&stream->sample_timer, + ns_to_ktime(stream->sample_period_ns), + HRTIMER_MODE_REL_PINNED); + return 0; } @@ -23,6 +54,22 @@ msm_perfcntr_resume(struct msm_gpu *gpu) static void msm_perfcntr_suspend_locked(struct msm_perfcntr_stream *stream) { + if (!stream) + return; + + hrtimer_cancel(&stream->sample_timer); + kthread_cancel_work_sync(&stream->sample_work); + + /* + * We can't use cancel_work_sync() here, since sel_work acquires + * gpu->lock which (a) in suspend path can already be held, or + * (b) in release path would invert the order of gpu->lock and + * gpu->perfcntr_lock. Either would cause deadlock. + */ + cancel_work(&stream->sel_work); + + stream->sel_fence = ++stream->gpu->perfcntrs->sel_seqno; + stream->seqno = 0; } void @@ -32,6 +79,469 @@ msm_perfcntr_suspend(struct msm_gpu *gpu) msm_perfcntr_suspend_locked(gpu->perfcntrs->stream); } +static int +msm_perfcntrs_stream_release(struct inode *inode, struct file *file) +{ + struct msm_perfcntr_stream *stream = file->private_data; + struct msm_gpu *gpu = stream->gpu; + + scoped_guard (mutex, &gpu->perfcntr_lock) { + struct msm_perfcntr_state *perfcntrs = gpu->perfcntrs; + + msm_perfcntr_suspend_locked(stream); + perfcntrs->stream = NULL; + + /* release previously allocated counters: */ + for (unsigned i = 0; i < gpu->num_perfcntr_groups; i++) + perfcntrs->groups[i]->allocated_counters = 0; + } + + /* + * In the suspend path we use async cancel_work(), to avoid blocking + * on sel_work, which acquires gpu->lock (which could deadlock since + * other paths acquire gpu->lock before perfcntr_lock) or already + * hold gpu->lock. + * + * But since we are freeing the stream, after dropping perfcntr_lock + * we need to block until sel_work is done: + */ + cancel_work_sync(&stream->sel_work); + + kfree(stream->group_idx); + kfree(stream->fifo.buf); + kfree(stream); + + return 0; +} + +static __poll_t +msm_perfcntrs_stream_poll(struct file *file, poll_table *wait) +{ + struct msm_perfcntr_stream *stream = file->private_data; + __poll_t events = 0; + + poll_wait(file, &stream->poll_wq, wait); + + /* Are there samples to read? */ + if (fifo_count(stream) > 0) + events |= EPOLLIN; + + return events; +} + +static ssize_t +msm_perfcntrs_stream_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct msm_perfcntr_stream *stream = file->private_data; + int ret; + + if (!(file->f_flags & O_NONBLOCK)) { + ret = wait_event_interruptible(stream->poll_wq, + fifo_count(stream) > 0); + if (ret) + return ret; + } + + guard(mutex)(&stream->read_lock); + + struct circ_buf *fifo = &stream->fifo; + const char *fptr = &fifo->buf[fifo->tail]; + + /* + * Note that smp_load_acquire() is not strictly required + * as CIRC_CNT_TO_END() does not access the head more than + * once. + */ + count = min_t(size_t, count, fifo_count_to_end(stream)); + if (copy_to_user(buf, fptr, count)) + return -EFAULT; + + smp_store_release(&fifo->tail, (fifo->tail + count) & (stream->fifo_size - 1)); + *ppos += count; + + return count; +} + +static const struct file_operations stream_fops = { + .owner = THIS_MODULE, + .release = msm_perfcntrs_stream_release, + .poll = msm_perfcntrs_stream_poll, + .read = msm_perfcntrs_stream_read, +}; + +static void +sel_worker(struct work_struct *w) +{ + struct msm_perfcntr_stream *stream = + container_of(w, typeof(*stream), sel_work); + struct msm_gpu *gpu = stream->gpu; + /* Reprogram SEL regs on highest priority rb: */ + struct msm_ringbuffer *ring = stream->gpu->rb[0]; + + /* + * If in the process of resuming, wait for that. Otherwise sel_worker + * which is enqueued in the resume path can be scheduled before the + * resume completes. + */ + pm_runtime_barrier(&gpu->pdev->dev); + + /* + * sel_work could end up scheduled before suspend, but running + * after. See msm_perfcntr_suspend_locked() + * + * So if we end up running sel_work after the GPU is already + * suspended, just bail. It will be scheduled again after + * the GPU is resumed. + */ + if (!pm_runtime_get_if_active(&gpu->pdev->dev)) + return; + + scoped_guard (mutex, &gpu->lock) { + guard(mutex)(&gpu->perfcntr_lock); + if (stream != gpu->perfcntrs->stream) + break; + msm_gpu_hw_init(gpu); + gpu->funcs->perfcntr_configure(gpu, ring, stream); + } + + pm_runtime_put_autosuspend(&gpu->pdev->dev); +} + +static void +sample_write(struct msm_perfcntr_stream *stream, int *head, const void *buf, size_t sz) +{ + /* + * FIFO size is power-of-two, and guaranteed to have enough space to + * fit what we are writing. So we should not hit the wrap-around + * point writing things that are power-of-two sized + */ + WARN_ON(CIRC_SPACE_TO_END(*head, stream->fifo.tail, stream->fifo_size) < sz); + + memcpy(&stream->fifo.buf[*head], buf, sz); + + /* Advance head, wrapping around if necessary: */ + *head = (*head + sz) & (stream->fifo_size - 1); +} + +static void +sample_write_u32(struct msm_perfcntr_stream *stream, int *head, uint32_t val) +{ + sample_write(stream, head, &val, sizeof(val)); +} + +static void +sample_write_u64(struct msm_perfcntr_stream *stream, int *head, uint64_t val) +{ + sample_write(stream, head, &val, sizeof(val)); +} + +static void +sample_worker(struct kthread_work *work) +{ + struct msm_perfcntr_stream *stream = + container_of(work, typeof(*stream), sample_work); + struct msm_gpu *gpu = stream->gpu; + struct msm_rbmemptrs *memptrs = gpu->rb[0]->memptrs; + + if (memptrs->perfcntr_fence != stream->sel_fence) + return; + + /* + * Ensure we have enough space to capture a sample period's + * worth of data: + */ + if (stream->period_size > fifo_space(stream)) { + stream->seqno = 0; + return; + } + + if (gpu->funcs->perfcntr_flush) + gpu->funcs->perfcntr_flush(gpu); + + /* Keep local copy of head to avoid updating fifo until the end: */ + int head = stream->fifo.head; + + /* + * We expect the GPU to be powered at this point, as the timer + * and kthread work are canceled/flushed in the suspend path: + */ + sample_write_u64(stream, &head, + to_adreno_gpu(gpu)->funcs->get_timestamp(gpu)); + sample_write_u32(stream, &head, stream->seqno++); + sample_write_u32(stream, &head, 0); + + for (unsigned i = 0; i < stream->nr_groups; i++) { + unsigned group_idx = msm_perfcntr_group_idx(stream, i); + unsigned base = msm_perfcntr_counter_base(stream, group_idx); + + const struct msm_perfcntr_group *group = + &gpu->perfcntr_groups[group_idx]; + + struct msm_perfcntr_group_state *group_state = + gpu->perfcntrs->groups[group_idx]; + + unsigned nr = group_state->allocated_counters; + for (unsigned j = 0; j < nr; j++) { + const struct msm_perfcntr_counter *counter = + &group->counters[j + base]; + uint64_t val = gpu_read64(gpu, counter->counter_reg_lo); + sample_write_u64(stream, &head, val); + } + } + + smp_store_release(&stream->fifo.head, head); + wake_up_all(&stream->poll_wq); +} + +static enum hrtimer_restart +sample_timer(struct hrtimer *hrtimer) +{ + struct msm_perfcntr_stream *stream = + container_of(hrtimer, typeof(*stream), sample_timer); + + kthread_queue_work(stream->gpu->worker, &stream->sample_work); + + hrtimer_forward_now(hrtimer, ns_to_ktime(stream->sample_period_ns)); + + return HRTIMER_RESTART; +} + +static int +get_group_idx(struct msm_gpu *gpu, const char *name, size_t len) +{ + for (unsigned i = 0; i < gpu->num_perfcntr_groups; i++) { + const struct msm_perfcntr_group *group = + &gpu->perfcntr_groups[i]; + if (!strncmp(group->name, name, len)) + return i; + } + + return -1; +} + +static int +get_available_counters(struct msm_gpu *gpu, int group_idx, uint32_t flags) +{ + struct msm_perfcntr_state *perfcntrs = gpu->perfcntrs; + + /* + * For local counter reservation, anything that is not used by + * global perfcntr stream is available: + */ + if (!(flags & MSM_PERFCNTR_STREAM)) { + return gpu->perfcntr_groups[group_idx].num_counters - + perfcntrs->groups[group_idx]->allocated_counters; + } + + /* + * For global counter collection, anything that is not reserved by + * one or more contexts is available: + */ + guard(mutex)(&gpu->dev->filelist_mutex); + + unsigned reserved_counters = 0; + struct drm_file *file; + + list_for_each_entry (file, &gpu->dev->filelist, lhead) { + struct msm_context *ctx = file->driver_priv; + + if (!ctx || !ctx->perfctx) + continue; + + unsigned n = ctx->perfctx->reserved_counters[group_idx]; + reserved_counters = max(reserved_counters, n); + } + + return gpu->perfcntr_groups[group_idx].num_counters - reserved_counters; +} + +int +msm_ioctl_perfcntr_config(struct drm_device *dev, void *data, struct drm_file *file) +{ + struct msm_drm_private *priv = dev->dev_private; + const struct drm_msm_perfcntr_config *args = data; + struct msm_context *ctx = file->driver_priv; + struct msm_gpu *gpu = priv->gpu; + int stream_fd = 0; + + if (!gpu || !gpu->num_perfcntr_groups) + return -ENXIO; + + struct msm_perfcntr_state *perfcntrs = gpu->perfcntrs; + + /* + * Validate args that don't require locks/power first: + */ + + if (args->flags & ~MSM_PERFCNTR_FLAGS) + return UERR(EINVAL, dev, "invalid flags"); + + if (args->nr_groups && !args->group_stride) + return UERR(EINVAL, dev, "invalid group_stride"); + + if (args->flags & MSM_PERFCNTR_STREAM) { + if (!perfmon_capable()) + return UERR(EPERM, dev, "invalid permissions"); + if (!args->nr_groups) + return UERR(EINVAL, dev, "invalid nr_groups"); + if (!args->period) + return UERR(EINVAL, dev, "invalid sampling period"); + } else { + if (args->period) + return UERR(EINVAL, dev, "sampling period not allowed"); + if (args->bufsz_shift) + return UERR(EINVAL, dev, "sample buf size not allowed"); + } + + if (args->nr_groups && !args->groups) + return UERR(EINVAL, dev, "no groups"); + + /* + * To avoid iterating over the groups multiple times, allocate and setup + * both a ctx and global stream object. Only one of the two will be + * kept in the end. + */ + + struct msm_perfcntr_context_state *perfctx __free(kfree) = kzalloc( + struct_size(perfctx, reserved_counters, gpu->num_perfcntr_groups), + GFP_KERNEL); + if (!perfctx) + return -ENOMEM; + + struct msm_perfcntr_stream *stream __free(kfree) = + kzalloc(sizeof(*stream), GFP_KERNEL); + if (!stream) + return -ENOMEM; + + uint32_t *group_idx __free(kfree) = + kcalloc(args->nr_groups, sizeof(uint32_t), GFP_KERNEL); + if (!group_idx) + return -ENOMEM; + + stream->gpu = gpu; + stream->sample_period_ns = args->period; + stream->nr_groups = args->nr_groups; + stream->fifo_size = 1 << args->bufsz_shift; + + mutex_init(&stream->read_lock); + + guard(pm_runtime_active_auto)(&gpu->pdev->dev); + guard(mutex)(&gpu->perfcntr_lock); + + if (args->flags & MSM_PERFCNTR_STREAM) { + if (perfcntrs->stream) + return UERR(EBUSY, dev, "perfcntr stream already open"); + } + + size_t bufsz = 16; /* header size includes seqno and 64b timestamp: */ + int ret = 0; + + for (unsigned i = 0; i < args->nr_groups; i++) { + struct drm_msm_perfcntr_group g = {0}; + void __user *userptr = + u64_to_user_ptr(args->groups + (i * args->group_stride)); + + if (copy_from_user(&g, userptr, args->group_stride)) + return -EFAULT; + + if (g.pad) + return UERR(EINVAL, dev, "groups[%d]: invalid pad", i); + + int idx = get_group_idx(gpu, g.group_name, sizeof(g.group_name)); + + if (idx < 0) + return UERR(EINVAL, dev, "groups[%d]: unknown group", i); + + if (g.nr_countables > gpu->perfcntr_groups[idx].num_counters) + return UERR(EINVAL, dev, "groups[%d]: too many counters", i); + + if (args->flags & MSM_PERFCNTR_STREAM) { + if (g.nr_countables && !g.countables) + return UERR(EINVAL, dev, "groups[%d]: no countables", i); + } else { + if (g.countables) + return UERR(EINVAL, dev, "groups[%d]: countables should be NULL", i); + } + + int avail_counters = get_available_counters(gpu, idx, args->flags); + if (g.nr_countables > avail_counters) { + /* + * Defer error return until we process all groups, in + * case there are other E2BIG groups: + */ + ret = UERR(E2BIG, dev, "groups[%d]: too few counters available", i); + + if (args->flags & MSM_PERFCNTR_UPDATE) { + /* Let userspace know how many counters are actually avail: */ + g.nr_countables = avail_counters; + if (copy_to_user(userptr, &g, args->group_stride)) + return -EFAULT; + } + } + + group_idx[i] = idx; + perfctx->reserved_counters[idx] = g.nr_countables; + + if (args->flags & MSM_PERFCNTR_STREAM) { + perfcntrs->groups[idx]->allocated_counters = g.nr_countables; + + size_t sz = sizeof(uint32_t) * g.nr_countables; + void __user *userptr = u64_to_user_ptr(g.countables); + + if (copy_from_user(perfcntrs->groups[idx]->countables, userptr, sz)) + return -EFAULT; + + /* Samples are 64b per countable: */ + bufsz += 2 * sz; + } + } + + if (ret) + return ret; + + if (args->flags & MSM_PERFCNTR_STREAM) { + /* + * Validate requested buffer size is large enough for at least + * a single sample period. + * + * Note the circ_buf implementation needs to be 1 byte larger + * than max it can hold (see CIRC_SPACE()). + */ + if (bufsz >= stream->fifo_size) + return UERR(ETOOSMALL, dev, "required buffer size: %zu", bufsz); + + stream->period_size = bufsz; + + void *buf __free(kfree) = + kmalloc(1 << args->bufsz_shift, GFP_KERNEL); + if (!buf) + return -ENOMEM; + + stream_fd = anon_inode_getfd("[msm_perfcntrs]", &stream_fops, stream, 0); + if (stream_fd < 0) + return stream_fd; + + INIT_WORK(&stream->sel_work, sel_worker); + kthread_init_work(&stream->sample_work, sample_worker); + init_waitqueue_head(&stream->poll_wq); + hrtimer_setup(&stream->sample_timer, sample_timer, + CLOCK_MONOTONIC, HRTIMER_MODE_REL); + + stream->sel_fence = ++perfcntrs->sel_seqno; + stream->group_idx = no_free_ptr(group_idx); + stream->fifo.buf = no_free_ptr(buf); + perfcntrs->stream = no_free_ptr(stream); + + msm_perfcntr_resume_locked(perfcntrs->stream); + } else { + kfree(ctx->perfctx); + ctx->perfctx = no_free_ptr(perfctx); + } + + return stream_fd; +} + /** * msm_perfcntr_group_idx - map idx of perfcntr group to group_idx * @stream: The global perfcntr stream diff --git a/drivers/gpu/drm/msm/msm_perfcntr.h b/drivers/gpu/drm/msm/msm_perfcntr.h index 14506bc37d05..198856b18445 100644 --- a/drivers/gpu/drm/msm/msm_perfcntr.h +++ b/drivers/gpu/drm/msm/msm_perfcntr.h @@ -7,6 +7,11 @@ #define __MSM_PERFCNTR_H__ #include "linux/array_size.h" +#include "linux/circ_buf.h" +#include "linux/hrtimer.h" +#include "linux/kthread.h" +#include "linux/wait.h" +#include "linux/workqueue.h" #include "adreno_common.xml.h" @@ -42,12 +47,49 @@ struct msm_perfcntr_stream { /** @gpu: Back-link to the GPU */ struct msm_gpu *gpu; + /** @sample_timer: Timer to sample counters */ + struct hrtimer sample_timer; + + /** @poll_wq: Wait queue for waiting for OA data to be available */ + wait_queue_head_t poll_wq; + + /** @sample_period_ns: Sampling period */ + uint64_t sample_period_ns; + /** @nr_groups: # of counter groups with enabled counters */ uint32_t nr_groups; + /** @seqno: counter for collected samples */ + uint32_t seqno; + /** @sel_fence: Fence for SEL reg programming */ uint32_t sel_fence; + /** + * @sel_work: Worker for SEL reg programming + * + * Initial SEL reg programming (as opposed to restoring the SEL + * regs on runpm resume) must run on the same ordered wq as is + * used by drm_sched, to serialize it with GEM_SUBMITs written + * into the same ringbuffer. + */ + struct work_struct sel_work; + + /** + * @sample_work: Worker for collecting samples + */ + struct kthread_work sample_work; + + /** + * @read_lock: + * + * Fifo access is synchronied on the producer side by virtue + * of there being a single timer collecting samples and writing + * into the fifo. It is protected on the consumer side by + * @read_lock. + */ + struct mutex read_lock; + /** * @group_idx: array of nr_groups * @@ -56,6 +98,15 @@ struct msm_perfcntr_stream { * the ioctl call that setup the stream */ uint32_t *group_idx; + + /** @fifo: circular buffer for samples */ + struct circ_buf fifo; + + /** @fifo_size: circular buffer size */ + size_t fifo_size; + + /** @period_size: size of data for single sampling period */ + size_t period_size; }; uint32_t msm_perfcntr_group_idx(const struct msm_perfcntr_stream *stream, uint32_t n); diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h index b99098792371..289cf228b873 100644 --- a/include/uapi/drm/msm_drm.h +++ b/include/uapi/drm/msm_drm.h @@ -491,6 +491,52 @@ struct drm_msm_submitqueue_query { __u32 pad; }; +#define MSM_PERFCNTR_STREAM 0x00000001 +#define MSM_PERFCNTR_UPDATE 0x00000002 +#define MSM_PERFCNTR_FLAGS ( \ + MSM_PERFCNTR_STREAM | \ + MSM_PERFCNTR_UPDATE | \ + 0) + +struct drm_msm_perfcntr_group { + char group_name[16]; + __u32 nr_countables; + __u32 pad; + __u64 countables; /* pointer to an array of nr_countables u32 */ +}; + +/* + * Note, for MSM_PERFCNTR_STREAM, the ioctl returns an fd to read recorded + * counters. This only works because the ioctl is DRM_IOW(), if we returned + * a out param in the ioctl struct the copy_to_user() (in drm_ioctl()) + * could fault, causing us to leak the fd. + * + * If the ioctl returns with error E2BIG, that means more counters/countables + * are requested than are currently available. If MSM_PERFCNTR_UPDATE flag + * is set, drm_msm_perfcntr_group::nr_countables will be updated to return + * the actual # of counters available. + * + * The data read from the has the following format for each sampling period: + * + * uint64_t timestamp; // CP_ALWAYS_ON_COUNTER captured at sample time + * uint32_t seqno; // increments by 1 each period, reset to 0 on discontinuity + * uint32_t mbz; // pad out counters to 64b + * struct { + * uint64_t counter[nr_countables]; + * } groups[nr_groups]; + * + * The ordering of groups and counters matches the order in PERFCNTR_CONFIG + * ioctl. + */ +struct drm_msm_perfcntr_config { + __u32 flags; /* bitmask of MSM_PERFCNTR_x */ + __u32 nr_groups; /* # of entries in groups array */ + __u64 groups; /* pointer to array of drm_msm_perfcntr_group */ + __u64 period; /* sampling period in ns */ + __u32 bufsz_shift; /* sample buffer size in bytes is 1<<bufsz_shift */ + __u32 group_stride; /* sizeof(struct drm_msm_perfcntr_group) */ +}; + #define DRM_MSM_GET_PARAM 0x00 #define DRM_MSM_SET_PARAM 0x01 #define DRM_MSM_GEM_NEW 0x02 @@ -507,6 +553,7 @@ struct drm_msm_submitqueue_query { #define DRM_MSM_SUBMITQUEUE_CLOSE 0x0B #define DRM_MSM_SUBMITQUEUE_QUERY 0x0C #define DRM_MSM_VM_BIND 0x0D +#define DRM_MSM_PERFCNTR_CONFIG 0x0E #define DRM_IOCTL_MSM_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param) #define DRM_IOCTL_MSM_SET_PARAM DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SET_PARAM, struct drm_msm_param) @@ -521,6 +568,7 @@ struct drm_msm_submitqueue_query { #define DRM_IOCTL_MSM_SUBMITQUEUE_CLOSE DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_CLOSE, __u32) #define DRM_IOCTL_MSM_SUBMITQUEUE_QUERY DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_QUERY, struct drm_msm_submitqueue_query) #define DRM_IOCTL_MSM_VM_BIND DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_VM_BIND, struct drm_msm_vm_bind) +#define DRM_IOCTL_MSM_PERFCNTR_CONFIG DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_PERFCNTR_CONFIG, struct drm_msm_perfcntr_config) #if defined(__cplusplus) } -- 2.54.0
