1 /* 2 * Copyright (c) 2015-2017 The Linux Foundation. All rights reserved. 3 * 4 * Previously licensed under the ISC license by Qualcomm Atheros, Inc. 5 * 6 * 7 * Permission to use, copy, modify, and/or distribute this software for 8 * any purpose with or without fee is hereby granted, provided that the 9 * above copyright notice and this permission notice appear in all 10 * copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL 13 * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED 14 * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE 15 * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL 16 * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR 17 * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER 18 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR 19 * PERFORMANCE OF THIS SOFTWARE. 20 */ 21 22 /* 23 * This file was originally distributed by Qualcomm Atheros, Inc. 24 * under proprietary terms before Copyright ownership was assigned 25 * to the Linux Foundation. 26 */ 27 28 #ifndef __HIF_IO32_H__ 29 #define __HIF_IO32_H__ 30 31 #include <linux/io.h> 32 #include "hif.h" 33 #include "hif_main.h" 34 35 #define hif_read32_mb(addr) ioread32((void __iomem *)addr) 36 #define hif_write32_mb(addr, value) \ 37 iowrite32((u32)(value), (void __iomem *)(addr)) 38 39 #define Q_TARGET_ACCESS_BEGIN(scn) \ 40 hif_target_sleep_state_adjust(scn, false, true) 41 #define Q_TARGET_ACCESS_END(scn) \ 42 hif_target_sleep_state_adjust(scn, true, false) 43 #define TARGET_REGISTER_ACCESS_ALLOWED(scn)\ 44 hif_is_target_register_access_allowed(scn) 45 46 /* 47 * A_TARGET_ACCESS_LIKELY will not wait for the target to wake up before 48 * continuing execution. Because A_TARGET_ACCESS_LIKELY does not guarantee 49 * that the target is awake before continuing, Q_TARGET_ACCESS macros must 50 * protect the actual target access. Since Q_TARGET_ACCESS protect the actual 51 * target access, A_TARGET_ACCESS_LIKELY hints are optional. 52 * 53 * To ignore "LIKELY" hints, set CONFIG_TARGET_ACCESS_LIKELY to 0 54 * (slightly worse performance, less power) 55 * 56 * To use "LIKELY" hints, set CONFIG_TARGET_ACCESS_LIKELY to 1 57 * (slightly better performance, more power) 58 * 59 * note: if a bus doesn't use hif_target_sleep_state_adjust, this will have 60 * no impact. 61 */ 62 #define CONFIG_TARGET_ACCESS_LIKELY 0 63 #if CONFIG_TARGET_ACCESS_LIKELY 64 #define A_TARGET_ACCESS_LIKELY(scn) \ 65 hif_target_sleep_state_adjust(scn, false, false) 66 #define A_TARGET_ACCESS_UNLIKELY(scn) \ 67 hif_target_sleep_state_adjust(scn, true, false) 68 #else /* CONFIG_ATH_PCIE_ACCESS_LIKELY */ 69 #define A_TARGET_ACCESS_LIKELY(scn) \ 70 do { \ 71 unsigned long unused = (unsigned long)(scn); \ 72 unused = unused; \ 73 } while (0) 74 75 #define A_TARGET_ACCESS_UNLIKELY(scn) \ 76 do { \ 77 unsigned long unused = (unsigned long)(scn); \ 78 unused = unused; \ 79 } while (0) 80 #endif /* CONFIG_ATH_PCIE_ACCESS_LIKELY */ 81 82 83 #ifdef HIF_PCI 84 #include "hif_io32_pci.h" 85 #endif 86 #ifdef HIF_SNOC 87 #include "hif_io32_snoc.h" 88 #endif /* HIF_PCI */ 89 90 #ifdef CONFIG_IO_MEM_ACCESS_DEBUG 91 uint32_t hif_target_read_checked(struct hif_softc *scn, 92 uint32_t offset); 93 void hif_target_write_checked(struct hif_softc *scn, uint32_t offset, 94 uint32_t value); 95 96 #define A_TARGET_READ(scn, offset) \ 97 hif_target_read_checked(scn, (offset)) 98 #define A_TARGET_WRITE(scn, offset, value) \ 99 hif_target_write_checked(scn, (offset), (value)) 100 #else /* CONFIG_ATH_PCIE_ACCESS_DEBUG */ 101 #define A_TARGET_READ(scn, offset) \ 102 hif_read32_mb(scn->mem + (offset)) 103 #define A_TARGET_WRITE(scn, offset, value) \ 104 hif_write32_mb((scn->mem) + (offset), value) 105 #endif 106 107 void hif_irq_enable(struct hif_softc *scn, int irq_id); 108 void hif_irq_disable(struct hif_softc *scn, int irq_id); 109 110 #endif /* __HIF_IO32_H__ */ 111