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