mei: expose hardware power gating state to mei layer
[deliverable/linux.git] / drivers / misc / mei / hw-txe.h
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1/*
2 *
3 * Intel Management Engine Interface (Intel MEI) Linux driver
4 * Copyright (c) 2013-2014, Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 */
16
17#ifndef _MEI_HW_TXE_H_
18#define _MEI_HW_TXE_H_
19
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20#include <linux/irqreturn.h>
21
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22#include "hw.h"
23#include "hw-txe-regs.h"
24
25/* Flatten Hierarchy interrupt cause */
26#define TXE_INTR_READINESS_BIT 0 /* HISR_INT_0_STS */
27#define TXE_INTR_READINESS HISR_INT_0_STS
28#define TXE_INTR_ALIVENESS_BIT 1 /* HISR_INT_1_STS */
29#define TXE_INTR_ALIVENESS HISR_INT_1_STS
30#define TXE_INTR_OUT_DB_BIT 2 /* HISR_INT_2_STS */
31#define TXE_INTR_OUT_DB HISR_INT_2_STS
32#define TXE_INTR_IN_READY_BIT 8 /* beyond HISR */
33#define TXE_INTR_IN_READY BIT(8)
34
35/**
36 * struct mei_txe_hw - txe hardware specifics
37 *
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38 * @mem_addr: SeC and BRIDGE bars
39 * @aliveness: aliveness (power gating) state of the hardware
40 * @readiness: readiness state of the hardware
41 * @wait_aliveness_resp: aliveness wait queue
42 * @intr_cause: translated interrupt cause
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43 */
44struct mei_txe_hw {
45 void __iomem *mem_addr[NUM_OF_MEM_BARS];
46 u32 aliveness;
47 u32 readiness;
9d098192 48 u32 slots;
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964a2331 50 wait_queue_head_t wait_aliveness_resp;
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51
52 unsigned long intr_cause;
53};
54
55#define to_txe_hw(dev) (struct mei_txe_hw *)((dev)->hw)
56
57static inline struct mei_device *hw_txe_to_mei(struct mei_txe_hw *hw)
58{
59 return container_of((void *)hw, struct mei_device, hw);
60}
61
62struct mei_device *mei_txe_dev_init(struct pci_dev *pdev);
63
64irqreturn_t mei_txe_irq_quick_handler(int irq, void *dev_id);
65irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id);
66
67int mei_txe_aliveness_set_sync(struct mei_device *dev, u32 req);
68
69int mei_txe_setup_satt2(struct mei_device *dev, phys_addr_t addr, u32 range);
70
71
72#endif /* _MEI_HW_TXE_H_ */
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