--- /dev/null
+/*
+ * Copyright 2013 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 <bskeggs@redhat.com>
+ */
+#include "priv.h"
+
+#include <core/client.h>
+#include <subdev/clk.h>
+
+#include <nvif/class.h>
+#include <nvif/ioctl.h>
+#include <nvif/unpack.h>
+
+static int
+nvkm_control_mthd_pstate_info(struct nvkm_object *object, void *data, u32 size)
+{
+ union {
+ struct nvif_control_pstate_info_v0 v0;
+ } *args = data;
+ struct nvkm_clk *clk = nvkm_clk(object);
+ int ret;
+
+ nv_ioctl(object, "control pstate info size %d\n", size);
+ if (nvif_unpack(args->v0, 0, 0, false)) {
+ nv_ioctl(object, "control pstate info vers %d\n",
+ args->v0.version);
+ } else
+ return ret;
+
+ if (clk) {
+ args->v0.count = clk->state_nr;
+ args->v0.ustate_ac = clk->ustate_ac;
+ args->v0.ustate_dc = clk->ustate_dc;
+ args->v0.pwrsrc = clk->pwrsrc;
+ args->v0.pstate = clk->pstate;
+ } else {
+ args->v0.count = 0;
+ args->v0.ustate_ac = NVIF_CONTROL_PSTATE_INFO_V0_USTATE_DISABLE;
+ args->v0.ustate_dc = NVIF_CONTROL_PSTATE_INFO_V0_USTATE_DISABLE;
+ args->v0.pwrsrc = -ENOSYS;
+ args->v0.pstate = NVIF_CONTROL_PSTATE_INFO_V0_PSTATE_UNKNOWN;
+ }
+
+ return 0;
+}
+
+static int
+nvkm_control_mthd_pstate_attr(struct nvkm_object *object, void *data, u32 size)
+{
+ union {
+ struct nvif_control_pstate_attr_v0 v0;
+ } *args = data;
+ struct nvkm_clk *clk = nvkm_clk(object);
+ struct nvkm_domain *domain;
+ struct nvkm_pstate *pstate;
+ struct nvkm_cstate *cstate;
+ int i = 0, j = -1;
+ u32 lo, hi;
+ int ret;
+
+ nv_ioctl(object, "control pstate attr size %d\n", size);
+ if (nvif_unpack(args->v0, 0, 0, false)) {
+ nv_ioctl(object, "control pstate attr vers %d state %d "
+ "index %d\n",
+ args->v0.version, args->v0.state, args->v0.index);
+ if (!clk)
+ return -ENODEV;
+ if (args->v0.state < NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT)
+ return -EINVAL;
+ if (args->v0.state >= clk->state_nr)
+ return -EINVAL;
+ } else
+ return ret;
+ domain = clk->domains;
+
+ while (domain->name != nv_clk_src_max) {
+ if (domain->mname && ++j == args->v0.index)
+ break;
+ domain++;
+ }
+
+ if (domain->name == nv_clk_src_max)
+ return -EINVAL;
+
+ if (args->v0.state != NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT) {
+ list_for_each_entry(pstate, &clk->states, head) {
+ if (i++ == args->v0.state)
+ break;
+ }
+
+ lo = pstate->base.domain[domain->name];
+ hi = lo;
+ list_for_each_entry(cstate, &pstate->list, head) {
+ lo = min(lo, cstate->domain[domain->name]);
+ hi = max(hi, cstate->domain[domain->name]);
+ }
+
+ args->v0.state = pstate->pstate;
+ } else {
+ lo = max(clk->read(clk, domain->name), 0);
+ hi = lo;
+ }
+
+ snprintf(args->v0.name, sizeof(args->v0.name), "%s", domain->mname);
+ snprintf(args->v0.unit, sizeof(args->v0.unit), "MHz");
+ args->v0.min = lo / domain->mdiv;
+ args->v0.max = hi / domain->mdiv;
+
+ args->v0.index = 0;
+ while ((++domain)->name != nv_clk_src_max) {
+ if (domain->mname) {
+ args->v0.index = ++j;
+ break;
+ }
+ }
+
+ return 0;
+}
+
+static int
+nvkm_control_mthd_pstate_user(struct nvkm_object *object, void *data, u32 size)
+{
+ union {
+ struct nvif_control_pstate_user_v0 v0;
+ } *args = data;
+ struct nvkm_clk *clk = nvkm_clk(object);
+ int ret;
+
+ nv_ioctl(object, "control pstate user size %d\n", size);
+ if (nvif_unpack(args->v0, 0, 0, false)) {
+ nv_ioctl(object, "control pstate user vers %d ustate %d "
+ "pwrsrc %d\n", args->v0.version,
+ args->v0.ustate, args->v0.pwrsrc);
+ if (!clk)
+ return -ENODEV;
+ } else
+ return ret;
+
+ if (args->v0.pwrsrc >= 0) {
+ ret |= nvkm_clk_ustate(clk, args->v0.ustate, args->v0.pwrsrc);
+ } else {
+ ret |= nvkm_clk_ustate(clk, args->v0.ustate, 0);
+ ret |= nvkm_clk_ustate(clk, args->v0.ustate, 1);
+ }
+
+ return ret;
+}
+
+static int
+nvkm_control_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
+{
+ switch (mthd) {
+ case NVIF_CONTROL_PSTATE_INFO:
+ return nvkm_control_mthd_pstate_info(object, data, size);
+ case NVIF_CONTROL_PSTATE_ATTR:
+ return nvkm_control_mthd_pstate_attr(object, data, size);
+ case NVIF_CONTROL_PSTATE_USER:
+ return nvkm_control_mthd_pstate_user(object, data, size);
+ default:
+ break;
+ }
+ return -EINVAL;
+}
+
+static struct nvkm_ofuncs
+nvkm_control_ofuncs = {
+ .ctor = _nvkm_object_ctor,
+ .dtor = nvkm_object_destroy,
+ .init = nvkm_object_init,
+ .fini = nvkm_object_fini,
+ .mthd = nvkm_control_mthd,
+};
+
+struct nvkm_oclass
+nvkm_control_oclass[] = {
+ { .handle = NVIF_IOCTL_NEW_V0_CONTROL,
+ .ofuncs = &nvkm_control_ofuncs
+ },
+ {}
+};
Code Review / kvmfornfv.git / blobdiff