| /* Copyright (c) 2002,2007-2017, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * 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. |
| * |
| */ |
| |
| #include <linux/ioctl.h> |
| #include "kgsl_device.h" |
| #include "adreno.h" |
| #include "adreno_a5xx.h" |
| |
| long adreno_ioctl_perfcounter_get(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_device *device = dev_priv->device; |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct kgsl_perfcounter_get *get = data; |
| int result; |
| |
| mutex_lock(&device->mutex); |
| |
| /* |
| * adreno_perfcounter_get() is called by kernel clients |
| * during start(), so it is not safe to take an |
| * active count inside that function. |
| */ |
| |
| result = adreno_perfcntr_active_oob_get(adreno_dev); |
| if (result) { |
| mutex_unlock(&device->mutex); |
| return (long)result; |
| } |
| |
| result = adreno_perfcounter_get(adreno_dev, |
| get->groupid, get->countable, &get->offset, |
| &get->offset_hi, PERFCOUNTER_FLAG_NONE); |
| |
| adreno_perfcntr_active_oob_put(adreno_dev); |
| |
| mutex_unlock(&device->mutex); |
| |
| return (long) result; |
| } |
| |
| long adreno_ioctl_perfcounter_put(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct kgsl_device *device = dev_priv->device; |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(device); |
| struct kgsl_perfcounter_put *put = data; |
| int result; |
| |
| mutex_lock(&device->mutex); |
| result = adreno_perfcounter_put(adreno_dev, put->groupid, |
| put->countable, PERFCOUNTER_FLAG_NONE); |
| mutex_unlock(&device->mutex); |
| |
| return (long) result; |
| } |
| |
| static long adreno_ioctl_perfcounter_query(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(dev_priv->device); |
| struct kgsl_perfcounter_query *query = data; |
| |
| return (long) adreno_perfcounter_query_group(adreno_dev, query->groupid, |
| query->countables, query->count, &query->max_counters); |
| } |
| |
| static long adreno_ioctl_perfcounter_read(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(dev_priv->device); |
| struct kgsl_perfcounter_read *read = data; |
| |
| return (long) adreno_perfcounter_read_group(adreno_dev, read->reads, |
| read->count); |
| } |
| |
| static long adreno_ioctl_preemption_counters_query( |
| struct kgsl_device_private *dev_priv, |
| unsigned int cmd, void *data) |
| { |
| struct adreno_device *adreno_dev = ADRENO_DEVICE(dev_priv->device); |
| struct adreno_gpudev *gpudev = ADRENO_GPU_DEVICE(adreno_dev); |
| struct kgsl_preemption_counters_query *read = data; |
| int size_level = A5XX_CP_CTXRECORD_PREEMPTION_COUNTER_SIZE; |
| int levels_to_copy; |
| |
| if (!adreno_is_a5xx(adreno_dev) || |
| !adreno_is_preemption_execution_enabled(adreno_dev)) |
| return -EOPNOTSUPP; |
| |
| if (read->size_user < size_level) |
| return -EINVAL; |
| |
| /* Calculate number of preemption counter levels to copy to userspace */ |
| levels_to_copy = (read->size_user / size_level); |
| if (levels_to_copy > gpudev->num_prio_levels) |
| levels_to_copy = gpudev->num_prio_levels; |
| |
| if (copy_to_user((void __user *) (uintptr_t) read->counters, |
| adreno_dev->preempt.counters.hostptr, |
| levels_to_copy * size_level)) |
| return -EFAULT; |
| |
| read->max_priority_level = levels_to_copy; |
| read->size_priority_level = size_level; |
| |
| return 0; |
| } |
| |
| long adreno_ioctl_helper(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, unsigned long arg, |
| const struct kgsl_ioctl *cmds, int len) |
| { |
| unsigned char data[128] = { 0 }; |
| long ret; |
| int i; |
| |
| static DEFINE_RATELIMIT_STATE(_rs, |
| DEFAULT_RATELIMIT_INTERVAL, |
| DEFAULT_RATELIMIT_BURST); |
| |
| for (i = 0; i < len; i++) { |
| if (_IOC_NR(cmd) == _IOC_NR(cmds[i].cmd)) |
| break; |
| } |
| |
| if (i == len) { |
| KGSL_DRV_INFO(dev_priv->device, |
| "invalid ioctl code 0x%08X\n", cmd); |
| return -ENOIOCTLCMD; |
| } |
| |
| if (WARN_ON(_IOC_SIZE(cmds[i].cmd) > sizeof(data))) { |
| if (__ratelimit(&_rs)) |
| WARN(1, "data too big for ioctl 0x%08X: %d/%ld\n", |
| cmd, _IOC_SIZE(cmds[i].cmd), sizeof(data)); |
| return -EINVAL; |
| } |
| |
| if (_IOC_SIZE(cmds[i].cmd)) { |
| ret = kgsl_ioctl_copy_in(cmds[i].cmd, cmd, arg, data); |
| |
| if (ret) |
| return ret; |
| } else { |
| memset(data, 0, sizeof(data)); |
| } |
| |
| ret = cmds[i].func(dev_priv, cmd, data); |
| |
| if (ret == 0 && _IOC_SIZE(cmds[i].cmd)) |
| ret = kgsl_ioctl_copy_out(cmds[i].cmd, cmd, arg, data); |
| |
| return ret; |
| } |
| |
| static struct kgsl_ioctl adreno_ioctl_funcs[] = { |
| { IOCTL_KGSL_PERFCOUNTER_GET, adreno_ioctl_perfcounter_get }, |
| { IOCTL_KGSL_PERFCOUNTER_PUT, adreno_ioctl_perfcounter_put }, |
| { IOCTL_KGSL_PERFCOUNTER_QUERY, adreno_ioctl_perfcounter_query }, |
| { IOCTL_KGSL_PERFCOUNTER_READ, adreno_ioctl_perfcounter_read }, |
| { IOCTL_KGSL_PREEMPTIONCOUNTER_QUERY, |
| adreno_ioctl_preemption_counters_query }, |
| }; |
| |
| long adreno_ioctl(struct kgsl_device_private *dev_priv, |
| unsigned int cmd, unsigned long arg) |
| { |
| return adreno_ioctl_helper(dev_priv, cmd, arg, |
| adreno_ioctl_funcs, ARRAY_SIZE(adreno_ioctl_funcs)); |
| } |