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/*
* Copyright (c) 2016-2018, NVIDIA CORPORATION. All rights reserved.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __NVGPU_CLK_ARB_LINUX_H__
#define __NVGPU_CLK_ARB_LINUX_H__
#include <nvgpu/types.h>
#include <nvgpu/bitops.h>
#include <nvgpu/lock.h>
#include <nvgpu/kmem.h>
#include <nvgpu/atomic.h>
#include <nvgpu/bug.h>
#include <nvgpu/kref.h>
#include <nvgpu/log.h>
#include <nvgpu/barrier.h>
#include <nvgpu/cond.h>
#include <nvgpu/list.h>
#include "gk20a/gk20a.h"
#include "clk/clk.h"
#include "pstate/pstate.h"
#include "lpwr/lpwr.h"
#include "volt/volt.h"
/*
* The defines here should finally move to clk_arb.h, once these are
* refactored to be free of Linux fields.
*/
enum clk_arb_work_item_type {
CLK_ARB_WORK_UPDATE_VF_TABLE,
CLK_ARB_WORK_UPDATE_ARB
};
struct nvgpu_clk_arb_work_item {
enum clk_arb_work_item_type item_type;
struct nvgpu_clk_arb *arb;
struct nvgpu_list_node worker_item;
};
struct nvgpu_clk_arb {
struct nvgpu_spinlock sessions_lock;
struct nvgpu_spinlock users_lock;
struct nvgpu_spinlock requests_lock;
struct nvgpu_mutex pstate_lock;
struct nvgpu_list_node users;
struct nvgpu_list_node sessions;
struct nvgpu_list_node requests;
struct gk20a *g;
int status;
struct nvgpu_clk_arb_target actual_pool[2];
struct nvgpu_clk_arb_target *actual;
u16 gpc2clk_default_mhz;
u16 mclk_default_mhz;
u32 voltuv_actual;
u16 gpc2clk_min, gpc2clk_max;
u16 mclk_min, mclk_max;
struct nvgpu_clk_arb_work_item update_vf_table_work_item;
struct nvgpu_clk_arb_work_item update_arb_work_item;
struct nvgpu_cond request_wq;
struct nvgpu_clk_vf_table *current_vf_table;
struct nvgpu_clk_vf_table vf_table_pool[2];
u32 vf_table_index;
u16 *mclk_f_points;
nvgpu_atomic_t req_nr;
u32 mclk_f_numpoints;
u16 *gpc2clk_f_points;
u32 gpc2clk_f_numpoints;
nvgpu_atomic64_t alarm_mask;
struct nvgpu_clk_notification_queue notification_queue;
#ifdef CONFIG_DEBUG_FS
struct nvgpu_clk_arb_debug debug_pool[2];
struct nvgpu_clk_arb_debug *debug;
bool debugfs_set;
#endif
};
struct nvgpu_clk_dev {
struct nvgpu_clk_session *session;
union {
struct nvgpu_list_node link;
struct nvgpu_list_node node;
};
struct nvgpu_cond readout_wq;
nvgpu_atomic_t poll_mask;
u16 gpc2clk_target_mhz;
u16 mclk_target_mhz;
u32 alarms_reported;
nvgpu_atomic_t enabled_mask;
struct nvgpu_clk_notification_queue queue;
u32 arb_queue_head;
struct nvgpu_ref refcount;
};
struct nvgpu_clk_session {
bool zombie;
struct gk20a *g;
struct nvgpu_ref refcount;
struct nvgpu_list_node link;
struct nvgpu_list_node targets;
struct nvgpu_spinlock session_lock;
struct nvgpu_clk_arb_target target_pool[2];
struct nvgpu_clk_arb_target *target;
};
static inline struct nvgpu_clk_session *
nvgpu_clk_session_from_link(struct nvgpu_list_node *node)
{
return (struct nvgpu_clk_session *)
((uintptr_t)node - offsetof(struct nvgpu_clk_session, link));
};
static inline struct nvgpu_clk_dev *
nvgpu_clk_dev_from_node(struct nvgpu_list_node *node)
{
return (struct nvgpu_clk_dev *)
((uintptr_t)node - offsetof(struct nvgpu_clk_dev, node));
};
static inline struct nvgpu_clk_dev *
nvgpu_clk_dev_from_link(struct nvgpu_list_node *node)
{
return (struct nvgpu_clk_dev *)
((uintptr_t)node - offsetof(struct nvgpu_clk_dev, link));
};
static inline struct nvgpu_clk_arb_work_item *
nvgpu_clk_arb_work_item_from_worker_item(struct nvgpu_list_node *node)
{
return (struct nvgpu_clk_arb_work_item *)
((uintptr_t)node - offsetof(struct nvgpu_clk_arb_work_item, worker_item));
};
void nvgpu_clk_arb_worker_enqueue(struct gk20a *g,
struct nvgpu_clk_arb_work_item *work_item);
#endif /* __NVGPU_CLK_ARB_LINUX_H__ */
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