diff options
Diffstat (limited to 'drivers/gpu/drm/panthor/panthor_drv.c')
| -rw-r--r-- | drivers/gpu/drm/panthor/panthor_drv.c | 180 |
1 files changed, 159 insertions, 21 deletions
diff --git a/drivers/gpu/drm/panthor/panthor_drv.c b/drivers/gpu/drm/panthor/panthor_drv.c index c520f156e2d7..08136e790ca0 100644 --- a/drivers/gpu/drm/panthor/panthor_drv.c +++ b/drivers/gpu/drm/panthor/panthor_drv.c @@ -3,12 +3,17 @@ /* Copyright 2019 Linaro, Ltd., Rob Herring <robh@kernel.org> */ /* Copyright 2019 Collabora ltd. */ +#ifdef CONFIG_ARM_ARCH_TIMER +#include <asm/arch_timer.h> +#endif + #include <linux/list.h> #include <linux/module.h> #include <linux/of_platform.h> #include <linux/pagemap.h> #include <linux/platform_device.h> #include <linux/pm_runtime.h> +#include <linux/time64.h> #include <drm/drm_auth.h> #include <drm/drm_debugfs.h> @@ -165,6 +170,8 @@ panthor_get_uobj_array(const struct drm_panthor_obj_array *in, u32 min_stride, _Generic(_obj_name, \ PANTHOR_UOBJ_DECL(struct drm_panthor_gpu_info, tiler_present), \ PANTHOR_UOBJ_DECL(struct drm_panthor_csif_info, pad), \ + PANTHOR_UOBJ_DECL(struct drm_panthor_timestamp_info, current_timestamp), \ + PANTHOR_UOBJ_DECL(struct drm_panthor_group_priorities_info, pad), \ PANTHOR_UOBJ_DECL(struct drm_panthor_sync_op, timeline_value), \ PANTHOR_UOBJ_DECL(struct drm_panthor_queue_submit, syncs), \ PANTHOR_UOBJ_DECL(struct drm_panthor_queue_create, ringbuf_size), \ @@ -751,10 +758,64 @@ static void panthor_submit_ctx_cleanup(struct panthor_submit_ctx *ctx, kvfree(ctx->jobs); } +static int panthor_query_timestamp_info(struct panthor_device *ptdev, + struct drm_panthor_timestamp_info *arg) +{ + int ret; + + ret = panthor_device_resume_and_get(ptdev); + if (ret) + return ret; + +#ifdef CONFIG_ARM_ARCH_TIMER + arg->timestamp_frequency = arch_timer_get_cntfrq(); +#else + arg->timestamp_frequency = 0; +#endif + arg->current_timestamp = panthor_gpu_read_timestamp(ptdev); + arg->timestamp_offset = panthor_gpu_read_timestamp_offset(ptdev); + + pm_runtime_put(ptdev->base.dev); + return 0; +} + +static int group_priority_permit(struct drm_file *file, + u8 priority) +{ + /* Ensure that priority is valid */ + if (priority > PANTHOR_GROUP_PRIORITY_REALTIME) + return -EINVAL; + + /* Medium priority and below are always allowed */ + if (priority <= PANTHOR_GROUP_PRIORITY_MEDIUM) + return 0; + + /* Higher priorities require CAP_SYS_NICE or DRM_MASTER */ + if (capable(CAP_SYS_NICE) || drm_is_current_master(file)) + return 0; + + return -EACCES; +} + +static void panthor_query_group_priorities_info(struct drm_file *file, + struct drm_panthor_group_priorities_info *arg) +{ + int prio; + + memset(arg, 0, sizeof(*arg)); + for (prio = PANTHOR_GROUP_PRIORITY_REALTIME; prio >= 0; prio--) { + if (!group_priority_permit(file, prio)) + arg->allowed_mask |= BIT(prio); + } +} + static int panthor_ioctl_dev_query(struct drm_device *ddev, void *data, struct drm_file *file) { struct panthor_device *ptdev = container_of(ddev, struct panthor_device, base); struct drm_panthor_dev_query *args = data; + struct drm_panthor_timestamp_info timestamp_info; + struct drm_panthor_group_priorities_info priorities_info; + int ret; if (!args->pointer) { switch (args->type) { @@ -766,6 +827,14 @@ static int panthor_ioctl_dev_query(struct drm_device *ddev, void *data, struct d args->size = sizeof(ptdev->csif_info); return 0; + case DRM_PANTHOR_DEV_QUERY_TIMESTAMP_INFO: + args->size = sizeof(timestamp_info); + return 0; + + case DRM_PANTHOR_DEV_QUERY_GROUP_PRIORITIES_INFO: + args->size = sizeof(priorities_info); + return 0; + default: return -EINVAL; } @@ -778,6 +847,18 @@ static int panthor_ioctl_dev_query(struct drm_device *ddev, void *data, struct d case DRM_PANTHOR_DEV_QUERY_CSIF_INFO: return PANTHOR_UOBJ_SET(args->pointer, args->size, ptdev->csif_info); + case DRM_PANTHOR_DEV_QUERY_TIMESTAMP_INFO: + ret = panthor_query_timestamp_info(ptdev, ×tamp_info); + + if (ret) + return ret; + + return PANTHOR_UOBJ_SET(args->pointer, args->size, timestamp_info); + + case DRM_PANTHOR_DEV_QUERY_GROUP_PRIORITIES_INFO: + panthor_query_group_priorities_info(file, &priorities_info); + return PANTHOR_UOBJ_SET(args->pointer, args->size, priorities_info); + default: return -EINVAL; } @@ -997,24 +1078,6 @@ static int panthor_ioctl_group_destroy(struct drm_device *ddev, void *data, return panthor_group_destroy(pfile, args->group_handle); } -static int group_priority_permit(struct drm_file *file, - u8 priority) -{ - /* Ensure that priority is valid */ - if (priority > PANTHOR_GROUP_PRIORITY_HIGH) - return -EINVAL; - - /* Medium priority and below are always allowed */ - if (priority <= PANTHOR_GROUP_PRIORITY_MEDIUM) - return 0; - - /* Higher priorities require CAP_SYS_NICE or DRM_MASTER */ - if (capable(CAP_SYS_NICE) || drm_is_current_master(file)) - return 0; - - return -EACCES; -} - static int panthor_ioctl_group_create(struct drm_device *ddev, void *data, struct drm_file *file) { @@ -1374,6 +1437,37 @@ static int panthor_mmap(struct file *filp, struct vm_area_struct *vma) return ret; } +static void panthor_gpu_show_fdinfo(struct panthor_device *ptdev, + struct panthor_file *pfile, + struct drm_printer *p) +{ + if (ptdev->profile_mask & PANTHOR_DEVICE_PROFILING_ALL) + panthor_fdinfo_gather_group_samples(pfile); + + if (ptdev->profile_mask & PANTHOR_DEVICE_PROFILING_TIMESTAMP) { +#ifdef CONFIG_ARM_ARCH_TIMER + drm_printf(p, "drm-engine-panthor:\t%llu ns\n", + DIV_ROUND_UP_ULL((pfile->stats.time * NSEC_PER_SEC), + arch_timer_get_cntfrq())); +#endif + } + if (ptdev->profile_mask & PANTHOR_DEVICE_PROFILING_CYCLES) + drm_printf(p, "drm-cycles-panthor:\t%llu\n", pfile->stats.cycles); + + drm_printf(p, "drm-maxfreq-panthor:\t%lu Hz\n", ptdev->fast_rate); + drm_printf(p, "drm-curfreq-panthor:\t%lu Hz\n", ptdev->current_frequency); +} + +static void panthor_show_fdinfo(struct drm_printer *p, struct drm_file *file) +{ + struct drm_device *dev = file->minor->dev; + struct panthor_device *ptdev = container_of(dev, struct panthor_device, base); + + panthor_gpu_show_fdinfo(ptdev, file->driver_priv, p); + + drm_show_memory_stats(p, file); +} + static const struct file_operations panthor_drm_driver_fops = { .open = drm_open, .release = drm_release, @@ -1383,6 +1477,7 @@ static const struct file_operations panthor_drm_driver_fops = { .read = drm_read, .llseek = noop_llseek, .mmap = panthor_mmap, + .show_fdinfo = drm_show_fdinfo, .fop_flags = FOP_UNSIGNED_OFFSET, }; @@ -1396,20 +1491,24 @@ static void panthor_debugfs_init(struct drm_minor *minor) /* * PanCSF driver version: * - 1.0 - initial interface + * - 1.1 - adds DEV_QUERY_TIMESTAMP_INFO query + * - 1.2 - adds DEV_QUERY_GROUP_PRIORITIES_INFO query + * - adds PANTHOR_GROUP_PRIORITY_REALTIME priority + * - 1.3 - adds DRM_PANTHOR_GROUP_STATE_INNOCENT flag */ static const struct drm_driver panthor_drm_driver = { .driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ | DRIVER_SYNCOBJ_TIMELINE | DRIVER_GEM_GPUVA, .open = panthor_open, .postclose = panthor_postclose, + .show_fdinfo = panthor_show_fdinfo, .ioctls = panthor_drm_driver_ioctls, .num_ioctls = ARRAY_SIZE(panthor_drm_driver_ioctls), .fops = &panthor_drm_driver_fops, .name = "panthor", .desc = "Panthor DRM driver", - .date = "20230801", .major = 1, - .minor = 0, + .minor = 3, .gem_create_object = panthor_gem_create_object, .gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table, @@ -1439,6 +1538,44 @@ static void panthor_remove(struct platform_device *pdev) panthor_device_unplug(ptdev); } +static ssize_t profiling_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct panthor_device *ptdev = dev_get_drvdata(dev); + + return sysfs_emit(buf, "%d\n", ptdev->profile_mask); +} + +static ssize_t profiling_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct panthor_device *ptdev = dev_get_drvdata(dev); + u32 value; + int err; + + err = kstrtou32(buf, 0, &value); + if (err) + return err; + + if ((value & ~PANTHOR_DEVICE_PROFILING_ALL) != 0) + return -EINVAL; + + ptdev->profile_mask = value; + + return len; +} + +static DEVICE_ATTR_RW(profiling); + +static struct attribute *panthor_attrs[] = { + &dev_attr_profiling.attr, + NULL, +}; + +ATTRIBUTE_GROUPS(panthor); + static const struct of_device_id dt_match[] = { { .compatible = "rockchip,rk3588-mali" }, { .compatible = "arm,mali-valhall-csf" }, @@ -1453,11 +1590,12 @@ static DEFINE_RUNTIME_DEV_PM_OPS(panthor_pm_ops, static struct platform_driver panthor_driver = { .probe = panthor_probe, - .remove_new = panthor_remove, + .remove = panthor_remove, .driver = { .name = "panthor", .pm = pm_ptr(&panthor_pm_ops), .of_match_table = dt_match, + .dev_groups = panthor_groups, }, }; 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