drivers/misc/mei/hw-txe.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (c) 2013-2016, Intel Corporation. All rights reserved.
   4  * Intel Management Engine Interface (Intel MEI) Linux driver
   5  */
   6
   7 #ifndef _MEI_HW_TXE_H_
   8 #define _MEI_HW_TXE_H_
   9
  10 #include <linux/irqreturn.h>
  11
  12 #include "hw.h"
  13 #include "hw-txe-regs.h"
  14
  15 #define MEI_TXI_RPM_TIMEOUT    500 /* ms */
  16
  17 /* Flatten Hierarchy interrupt cause */
  18 #define TXE_INTR_READINESS_BIT  0 /* HISR_INT_0_STS */
  19 #define TXE_INTR_READINESS      HISR_INT_0_STS
  20 #define TXE_INTR_ALIVENESS_BIT  1 /* HISR_INT_1_STS */
  21 #define TXE_INTR_ALIVENESS      HISR_INT_1_STS
  22 #define TXE_INTR_OUT_DB_BIT     2 /* HISR_INT_2_STS */
  23 #define TXE_INTR_OUT_DB         HISR_INT_2_STS
  24 #define TXE_INTR_IN_READY_BIT   8 /* beyond HISR */
  25 #define TXE_INTR_IN_READY       BIT(8)
  26
  27 /**
  28  * struct mei_txe_hw - txe hardware specifics
  29  *
  30  * @mem_addr:            SeC and BRIDGE bars
  31  * @aliveness:           aliveness (power gating) state of the hardware
  32  * @readiness:           readiness state of the hardware
  33  * @slots:               number of empty slots
  34  * @wait_aliveness_resp: aliveness wait queue
  35  * @intr_cause:          translated interrupt cause
  36  */
  37 struct mei_txe_hw {
  38         void __iomem * const *mem_addr;
  39         u32 aliveness;
  40         u32 readiness;
  41         u32 slots;
  42
  43         wait_queue_head_t wait_aliveness_resp;
  44
  45         unsigned long intr_cause;
  46 };
  47
  48 #define to_txe_hw(dev) (struct mei_txe_hw *)((dev)->hw)
  49
  50 static inline struct mei_device *hw_txe_to_mei(struct mei_txe_hw *hw)
  51 {
  52         return container_of((void *)hw, struct mei_device, hw);
  53 }
  54
  55 struct mei_device *mei_txe_dev_init(struct pci_dev *pdev);
  56
  57 irqreturn_t mei_txe_irq_quick_handler(int irq, void *dev_id);
  58 irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id);
  59
  60 int mei_txe_aliveness_set_sync(struct mei_device *dev, u32 req);
  61
  62 int mei_txe_setup_satt2(struct mei_device *dev, phys_addr_t addr, u32 range);
  63
  64
  65 #endif /* _MEI_HW_TXE_H_ */