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 20 #include <linux/irqreturn.h> 21 22 #include "hw.h" 23 #include "hw-txe-regs.h" 24 25 #define MEI_TXI_RPM_TIMEOUT 500 /* ms */ 26 27 /* Flatten Hierarchy interrupt cause */ 28 #define TXE_INTR_READINESS_BIT 0 /* HISR_INT_0_STS */ 29 #define TXE_INTR_READINESS HISR_INT_0_STS 30 #define TXE_INTR_ALIVENESS_BIT 1 /* HISR_INT_1_STS */ 31 #define TXE_INTR_ALIVENESS HISR_INT_1_STS 32 #define TXE_INTR_OUT_DB_BIT 2 /* HISR_INT_2_STS */ 33 #define TXE_INTR_OUT_DB HISR_INT_2_STS 34 #define TXE_INTR_IN_READY_BIT 8 /* beyond HISR */ 35 #define TXE_INTR_IN_READY BIT(8) 36 37 /** 38 * struct mei_txe_hw - txe hardware specifics 39 * 40 * @mem_addr: SeC and BRIDGE bars 41 * @aliveness: aliveness (power gating) state of the hardware 42 * @readiness: readiness state of the hardware 43 * @slots: number of empty slots 44 * @wait_aliveness_resp: aliveness wait queue 45 * @intr_cause: translated interrupt cause 46 */ 47 struct mei_txe_hw { 48 void __iomem *mem_addr[NUM_OF_MEM_BARS]; 49 u32 aliveness; 50 u32 readiness; 51 u32 slots; 52 53 wait_queue_head_t wait_aliveness_resp; 54 55 unsigned long intr_cause; 56 }; 57 58 #define to_txe_hw(dev) (struct mei_txe_hw *)((dev)->hw) 59 60 static inline struct mei_device *hw_txe_to_mei(struct mei_txe_hw *hw) 61 { 62 return container_of((void *)hw, struct mei_device, hw); 63 } 64 65 struct mei_device *mei_txe_dev_init(struct pci_dev *pdev); 66 67 irqreturn_t mei_txe_irq_quick_handler(int irq, void *dev_id); 68 irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id); 69 70 int mei_txe_aliveness_set_sync(struct mei_device *dev, u32 req); 71 72 int mei_txe_setup_satt2(struct mei_device *dev, phys_addr_t addr, u32 range); 73 74 75 #endif /* _MEI_HW_TXE_H_ */ 76