drm/nouveau: import initial work on vbios performance table parsing
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c
new file mode 100644
index 0000000..9cf5fd6
--- /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);
+}
+