From 330c5988ee78045e6a731c3693251aaa5b0d14e3 Mon Sep 17 00:00:00 2001 From: Ben Skeggs Date: Thu, 16 Sep 2010 15:39:49 +1000 Subject: drm/nouveau: import initial work on vbios performance table parsing Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_pm.c | 214 +++++++++++++++++++++++++++++++++++ 1 file changed, 214 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nouveau_pm.c (limited to 'drivers/gpu/drm/nouveau/nouveau_pm.c') diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c new file mode 100644 index 000000000000..9cf5fd665b8c --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_pm.c @@ -0,0 +1,214 @@ +/* + * Copyright 2010 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + * Authors: Ben Skeggs + */ + +#include "drmP.h" + +#include "nouveau_drv.h" +#include "nouveau_pm.h" + +static int +nouveau_pm_perflvl_get(struct drm_device *dev, struct nouveau_pm_level *perflvl) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_pm_engine *pm = &dev_priv->engine.pm; + int ret; + + if (!pm->clock_get) + return -EINVAL; + + memset(perflvl, 0, sizeof(*perflvl)); + + ret = pm->clock_get(dev, PLL_CORE); + if (ret > 0) + perflvl->core = ret; + + ret = pm->clock_get(dev, PLL_MEMORY); + if (ret > 0) + perflvl->memory = ret; + + ret = pm->clock_get(dev, PLL_SHADER); + if (ret > 0) + perflvl->shader = ret; + + ret = pm->clock_get(dev, PLL_UNK05); + if (ret > 0) + perflvl->unk05 = ret; + + if (pm->voltage.supported && pm->voltage_get) { + ret = pm->voltage_get(dev); + if (ret > 0) + perflvl->voltage = ret; + } + + return 0; +} + +static void +nouveau_pm_perflvl_info(struct nouveau_pm_level *perflvl, char *ptr, int len) +{ + char s[16], v[16], f[16]; + + s[0] = '\0'; + if (perflvl->shader) + snprintf(s, sizeof(s), " shader %dMHz", perflvl->shader / 1000); + + v[0] = '\0'; + if (perflvl->voltage) + snprintf(v, sizeof(v), " voltage %dmV", perflvl->voltage * 10); + + f[0] = '\0'; + if (perflvl->fanspeed) + snprintf(f, sizeof(f), " fanspeed %d%%", perflvl->fanspeed); + + snprintf(ptr, len, "core %dMHz memory %dMHz%s%s%s\n", + perflvl->core / 1000, perflvl->memory / 1000, s, v, f); +} + +static ssize_t +nouveau_pm_get_perflvl_info(struct device *d, + struct device_attribute *a, char *buf) +{ + struct nouveau_pm_level *perflvl = (struct nouveau_pm_level *)a; + char *ptr = buf; + int len = PAGE_SIZE; + + snprintf(ptr, len, "%d: ", perflvl->id); + ptr += strlen(buf); + len -= strlen(buf); + + nouveau_pm_perflvl_info(perflvl, ptr, len); + return strlen(buf); +} + +static ssize_t +nouveau_pm_get_perflvl(struct device *d, struct device_attribute *a, char *buf) +{ + struct drm_device *dev = pci_get_drvdata(to_pci_dev(d)); + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_pm_engine *pm = &dev_priv->engine.pm; + struct nouveau_pm_level cur; + int len = PAGE_SIZE, ret; + char *ptr = buf; + + if (!pm->cur) + snprintf(ptr, len, "setting: boot\n"); + else if (pm->cur == &pm->boot) + snprintf(ptr, len, "setting: boot\nc: "); + else + snprintf(ptr, len, "setting: static %d\nc: ", pm->cur->id); + ptr += strlen(buf); + len -= strlen(buf); + + ret = nouveau_pm_perflvl_get(dev, &cur); + if (ret == 0) + nouveau_pm_perflvl_info(&cur, ptr, len); + return strlen(buf); +} + +static ssize_t +nouveau_pm_set_perflvl(struct device *d, struct device_attribute *a, + const char *buf, size_t count) +{ + return -EPERM; +} + +DEVICE_ATTR(performance_level, S_IRUGO | S_IWUSR, + nouveau_pm_get_perflvl, nouveau_pm_set_perflvl); + +int +nouveau_pm_init(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_pm_engine *pm = &dev_priv->engine.pm; + struct device *d = &dev->pdev->dev; + char info[256]; + int ret, i; + + nouveau_volt_init(dev); + nouveau_perf_init(dev); + + NV_INFO(dev, "%d available performance level(s)\n", pm->nr_perflvl); + for (i = 0; i < pm->nr_perflvl; i++) { + nouveau_pm_perflvl_info(&pm->perflvl[i], info, sizeof(info)); + NV_INFO(dev, "%d: %s", pm->perflvl[i].id, info); + } + + /* determine current ("boot") performance level */ + ret = nouveau_pm_perflvl_get(dev, &pm->boot); + if (ret == 0) { + pm->cur = &pm->boot; + + nouveau_pm_perflvl_info(&pm->boot, info, sizeof(info)); + NV_INFO(dev, "c: %s", info); + } + + /* initialise sysfs */ + ret = device_create_file(d, &dev_attr_performance_level); + if (ret) + return ret; + + for (i = 0; i < pm->nr_perflvl; i++) { + struct nouveau_pm_level *perflvl = &pm->perflvl[i]; + + perflvl->dev_attr.attr.name = perflvl->name; + perflvl->dev_attr.attr.mode = S_IRUGO; + perflvl->dev_attr.show = nouveau_pm_get_perflvl_info; + perflvl->dev_attr.store = NULL; + sysfs_attr_init(&perflvl->dev_attr.attr); + + ret = device_create_file(d, &perflvl->dev_attr); + if (ret) { + NV_ERROR(dev, "failed pervlvl %d sysfs: %d\n", + perflvl->id, i); + perflvl->dev_attr.attr.name = NULL; + nouveau_pm_fini(dev); + return ret; + } + } + + return 0; +} + +void +nouveau_pm_fini(struct drm_device *dev) +{ + struct drm_nouveau_private *dev_priv = dev->dev_private; + struct nouveau_pm_engine *pm = &dev_priv->engine.pm; + struct device *d = &dev->pdev->dev; + int i; + + device_remove_file(d, &dev_attr_performance_level); + for (i = 0; i < pm->nr_perflvl; i++) { + struct nouveau_pm_level *pl = &pm->perflvl[i]; + + if (!pl->dev_attr.attr.name) + break; + + device_remove_file(d, &pl->dev_attr); + } + + nouveau_perf_fini(dev); + nouveau_volt_fini(dev); +} + -- cgit v1.2.3