Signed-off-by: Ben Skeggs <bskeggs@redhat.com>tirimbino
Ben Skeggs
11 years ago
parent
9838366c15
commit
26fdd78cce
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/*
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* Copyright 2013 Red Hat Inc. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a |
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* copy of this software and associated documentation files (the "Software"), |
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* to deal in the Software without restriction, including without limitation |
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* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
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* and/or sell copies of the Software, and to permit persons to whom the |
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* Software is furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in |
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* all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
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* OTHER DEALINGS IN THE SOFTWARE. |
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* |
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* Authors: Ben Skeggs <bskeggs@redhat.com> |
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*/ |
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#include "nouveau_sysfs.h" |
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#include <core/object.h> |
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#include <core/class.h> |
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static inline struct drm_device * |
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drm_device(struct device *d) |
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{ |
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return pci_get_drvdata(to_pci_dev(d)); |
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} |
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#define snappendf(p,r,f,a...) do { \ |
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snprintf(p, r, f, ##a); \
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r -= strlen(p); \
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p += strlen(p); \
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} while(0) |
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static ssize_t |
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nouveau_sysfs_pstate_get(struct device *d, struct device_attribute *a, char *b) |
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{ |
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struct nouveau_sysfs *sysfs = nouveau_sysfs(drm_device(d)); |
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struct nv_control_pstate_info info; |
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size_t cnt = PAGE_SIZE; |
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char *buf = b; |
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int ret, i; |
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ret = nv_exec(sysfs->ctrl, NV_CONTROL_PSTATE_INFO, &info, sizeof(info)); |
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if (ret) |
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return ret; |
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for (i = 0; i < info.count + 1; i++) { |
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const s32 state = i < info.count ? i : |
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NV_CONTROL_PSTATE_ATTR_STATE_CURRENT; |
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struct nv_control_pstate_attr attr = { |
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.state = state, |
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.index = 0, |
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}; |
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ret = nv_exec(sysfs->ctrl, NV_CONTROL_PSTATE_ATTR, |
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&attr, sizeof(attr)); |
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if (ret) |
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return ret; |
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if (i < info.count) |
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snappendf(buf, cnt, "%02x:", attr.state); |
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else |
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snappendf(buf, cnt, "--:"); |
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attr.index = 0; |
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do { |
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attr.state = state; |
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ret = nv_exec(sysfs->ctrl, NV_CONTROL_PSTATE_ATTR, |
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&attr, sizeof(attr)); |
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if (ret) |
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return ret; |
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snappendf(buf, cnt, " %s %d", attr.name, attr.min); |
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if (attr.min != attr.max) |
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snappendf(buf, cnt, "-%d", attr.max); |
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snappendf(buf, cnt, " %s", attr.unit); |
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} while (attr.index); |
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if ((state >= 0 && info.pstate == state) || |
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(state < 0 && info.ustate < 0)) |
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snappendf(buf, cnt, " *"); |
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snappendf(buf, cnt, "\n"); |
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} |
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return strlen(b); |
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} |
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static ssize_t |
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nouveau_sysfs_pstate_set(struct device *d, struct device_attribute *a, |
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const char *buf, size_t count) |
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{ |
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struct nouveau_sysfs *sysfs = nouveau_sysfs(drm_device(d)); |
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struct nv_control_pstate_user args; |
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long value, ret; |
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char *tmp; |
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if ((tmp = strchr(buf, '\n'))) |
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*tmp = '\0'; |
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if (!strcasecmp(buf, "none")) |
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args.state = NV_CONTROL_PSTATE_USER_STATE_UNKNOWN; |
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else |
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if (!strcasecmp(buf, "auto")) |
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args.state = NV_CONTROL_PSTATE_USER_STATE_PERFMON; |
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else { |
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ret = kstrtol(buf, 16, &value); |
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if (ret) |
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return ret; |
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args.state = value; |
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} |
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ret = nv_exec(sysfs->ctrl, NV_CONTROL_PSTATE_USER, &args, sizeof(args)); |
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if (ret < 0) |
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return ret; |
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return count; |
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} |
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static DEVICE_ATTR(pstate, S_IRUGO | S_IWUSR, |
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nouveau_sysfs_pstate_get, nouveau_sysfs_pstate_set); |
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void |
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nouveau_sysfs_fini(struct drm_device *dev) |
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{ |
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struct nouveau_sysfs *sysfs = nouveau_sysfs(dev); |
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struct nouveau_drm *drm = nouveau_drm(dev); |
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if (sysfs->ctrl) { |
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device_remove_file(&dev->pdev->dev, &dev_attr_pstate); |
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nouveau_object_del(nv_object(drm), NVDRM_DEVICE, NVDRM_CONTROL); |
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} |
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drm->sysfs = NULL; |
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kfree(sysfs); |
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} |
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int |
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nouveau_sysfs_init(struct drm_device *dev) |
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{ |
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struct nouveau_drm *drm = nouveau_drm(dev); |
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struct nouveau_sysfs *sysfs; |
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int ret; |
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sysfs = drm->sysfs = kzalloc(sizeof(*sysfs), GFP_KERNEL); |
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if (!sysfs) |
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return -ENOMEM; |
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ret = nouveau_object_new(nv_object(drm), NVDRM_DEVICE, NVDRM_CONTROL, |
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NV_CONTROL_CLASS, NULL, 0, &sysfs->ctrl); |
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if (ret == 0) |
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device_create_file(&dev->pdev->dev, &dev_attr_pstate); |
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return 0; |
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} |
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@ -0,0 +1,19 @@ |
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#ifndef __NOUVEAU_SYSFS_H__ |
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#define __NOUVEAU_SYSFS_H__ |
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#include "nouveau_drm.h" |
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struct nouveau_sysfs { |
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struct nouveau_object *ctrl; |
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}; |
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static inline struct nouveau_sysfs * |
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nouveau_sysfs(struct drm_device *dev) |
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{ |
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return nouveau_drm(dev)->sysfs; |
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} |
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int nouveau_sysfs_init(struct drm_device *); |
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void nouveau_sysfs_fini(struct drm_device *); |
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#endif |
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