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 /* 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 * 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: aliveness wait queue 42 * @recvd_aliveness: aliveness interrupt was recived 43 * @intr_cause: translated interrupt cause 44 */ 45 struct mei_txe_hw { 46 void __iomem *mem_addr[NUM_OF_MEM_BARS]; 47 u32 aliveness; 48 u32 readiness; 49 u32 slots; 50 51 wait_queue_head_t wait_aliveness; 52 bool recvd_aliveness; 53 54 unsigned long intr_cause; 55 }; 56 57 #define to_txe_hw(dev) (struct mei_txe_hw *)((dev)->hw) 58 59 static inline struct mei_device *hw_txe_to_mei(struct mei_txe_hw *hw) 60 { 61 return container_of((void *)hw, struct mei_device, hw); 62 } 63 64 struct mei_device *mei_txe_dev_init(struct pci_dev *pdev); 65 66 irqreturn_t mei_txe_irq_quick_handler(int irq, void *dev_id); 67 irqreturn_t mei_txe_irq_thread_handler(int irq, void *dev_id); 68 69 int mei_txe_aliveness_set_sync(struct mei_device *dev, u32 req); 70 71 int mei_txe_setup_satt2(struct mei_device *dev, phys_addr_t addr, u32 range); 72 73 74 #endif /* _MEI_HW_TXE_H_ */ 75