1 /* 2 * Copyright © 2017 Intel Corporation 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 21 * IN THE SOFTWARE. 22 * 23 */ 24 25 #ifndef __INTEL_UNCORE_H__ 26 #define __INTEL_UNCORE_H__ 27 28 #include <linux/spinlock.h> 29 #include <linux/notifier.h> 30 #include <linux/hrtimer.h> 31 32 #include "i915_reg.h" 33 34 struct drm_i915_private; 35 36 enum forcewake_domain_id { 37 FW_DOMAIN_ID_RENDER = 0, 38 FW_DOMAIN_ID_BLITTER, 39 FW_DOMAIN_ID_MEDIA, 40 FW_DOMAIN_ID_MEDIA_VDBOX0, 41 FW_DOMAIN_ID_MEDIA_VDBOX1, 42 FW_DOMAIN_ID_MEDIA_VDBOX2, 43 FW_DOMAIN_ID_MEDIA_VDBOX3, 44 FW_DOMAIN_ID_MEDIA_VEBOX0, 45 FW_DOMAIN_ID_MEDIA_VEBOX1, 46 47 FW_DOMAIN_ID_COUNT 48 }; 49 50 enum forcewake_domains { 51 FORCEWAKE_RENDER = BIT(FW_DOMAIN_ID_RENDER), 52 FORCEWAKE_BLITTER = BIT(FW_DOMAIN_ID_BLITTER), 53 FORCEWAKE_MEDIA = BIT(FW_DOMAIN_ID_MEDIA), 54 FORCEWAKE_MEDIA_VDBOX0 = BIT(FW_DOMAIN_ID_MEDIA_VDBOX0), 55 FORCEWAKE_MEDIA_VDBOX1 = BIT(FW_DOMAIN_ID_MEDIA_VDBOX1), 56 FORCEWAKE_MEDIA_VDBOX2 = BIT(FW_DOMAIN_ID_MEDIA_VDBOX2), 57 FORCEWAKE_MEDIA_VDBOX3 = BIT(FW_DOMAIN_ID_MEDIA_VDBOX3), 58 FORCEWAKE_MEDIA_VEBOX0 = BIT(FW_DOMAIN_ID_MEDIA_VEBOX0), 59 FORCEWAKE_MEDIA_VEBOX1 = BIT(FW_DOMAIN_ID_MEDIA_VEBOX1), 60 61 FORCEWAKE_ALL = BIT(FW_DOMAIN_ID_COUNT) - 1 62 }; 63 64 struct intel_uncore_funcs { 65 void (*force_wake_get)(struct drm_i915_private *dev_priv, 66 enum forcewake_domains domains); 67 void (*force_wake_put)(struct drm_i915_private *dev_priv, 68 enum forcewake_domains domains); 69 70 uint8_t (*mmio_readb)(struct drm_i915_private *dev_priv, 71 i915_reg_t r, bool trace); 72 uint16_t (*mmio_readw)(struct drm_i915_private *dev_priv, 73 i915_reg_t r, bool trace); 74 uint32_t (*mmio_readl)(struct drm_i915_private *dev_priv, 75 i915_reg_t r, bool trace); 76 uint64_t (*mmio_readq)(struct drm_i915_private *dev_priv, 77 i915_reg_t r, bool trace); 78 79 void (*mmio_writeb)(struct drm_i915_private *dev_priv, 80 i915_reg_t r, uint8_t val, bool trace); 81 void (*mmio_writew)(struct drm_i915_private *dev_priv, 82 i915_reg_t r, uint16_t val, bool trace); 83 void (*mmio_writel)(struct drm_i915_private *dev_priv, 84 i915_reg_t r, uint32_t val, bool trace); 85 }; 86 87 struct intel_forcewake_range { 88 u32 start; 89 u32 end; 90 91 enum forcewake_domains domains; 92 }; 93 94 struct intel_uncore { 95 spinlock_t lock; /** lock is also taken in irq contexts. */ 96 97 const struct intel_forcewake_range *fw_domains_table; 98 unsigned int fw_domains_table_entries; 99 100 struct notifier_block pmic_bus_access_nb; 101 struct intel_uncore_funcs funcs; 102 103 unsigned int fifo_count; 104 105 enum forcewake_domains fw_domains; 106 enum forcewake_domains fw_domains_active; 107 108 u32 fw_set; 109 u32 fw_clear; 110 u32 fw_reset; 111 112 struct intel_uncore_forcewake_domain { 113 enum forcewake_domain_id id; 114 enum forcewake_domains mask; 115 unsigned int wake_count; 116 bool active; 117 struct hrtimer timer; 118 i915_reg_t reg_set; 119 i915_reg_t reg_ack; 120 } fw_domain[FW_DOMAIN_ID_COUNT]; 121 122 struct { 123 unsigned int count; 124 125 int saved_mmio_check; 126 int saved_mmio_debug; 127 } user_forcewake; 128 129 int unclaimed_mmio_check; 130 }; 131 132 /* Iterate over initialised fw domains */ 133 #define for_each_fw_domain_masked(domain__, mask__, dev_priv__, tmp__) \ 134 for (tmp__ = (mask__); \ 135 tmp__ ? (domain__ = &(dev_priv__)->uncore.fw_domain[__mask_next_bit(tmp__)]), 1 : 0;) 136 137 #define for_each_fw_domain(domain__, dev_priv__, tmp__) \ 138 for_each_fw_domain_masked(domain__, (dev_priv__)->uncore.fw_domains, dev_priv__, tmp__) 139 140 141 void intel_uncore_sanitize(struct drm_i915_private *dev_priv); 142 void intel_uncore_init(struct drm_i915_private *dev_priv); 143 bool intel_uncore_unclaimed_mmio(struct drm_i915_private *dev_priv); 144 bool intel_uncore_arm_unclaimed_mmio_detection(struct drm_i915_private *dev_priv); 145 void intel_uncore_fini(struct drm_i915_private *dev_priv); 146 void intel_uncore_suspend(struct drm_i915_private *dev_priv); 147 void intel_uncore_resume_early(struct drm_i915_private *dev_priv); 148 void intel_uncore_runtime_resume(struct drm_i915_private *dev_priv); 149 150 u64 intel_uncore_edram_size(struct drm_i915_private *dev_priv); 151 void assert_forcewakes_inactive(struct drm_i915_private *dev_priv); 152 void assert_forcewakes_active(struct drm_i915_private *dev_priv, 153 enum forcewake_domains fw_domains); 154 const char *intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id); 155 156 enum forcewake_domains 157 intel_uncore_forcewake_for_reg(struct drm_i915_private *dev_priv, 158 i915_reg_t reg, unsigned int op); 159 #define FW_REG_READ (1) 160 #define FW_REG_WRITE (2) 161 162 void intel_uncore_forcewake_get(struct drm_i915_private *dev_priv, 163 enum forcewake_domains domains); 164 void intel_uncore_forcewake_put(struct drm_i915_private *dev_priv, 165 enum forcewake_domains domains); 166 /* Like above but the caller must manage the uncore.lock itself. 167 * Must be used with I915_READ_FW and friends. 168 */ 169 void intel_uncore_forcewake_get__locked(struct drm_i915_private *dev_priv, 170 enum forcewake_domains domains); 171 void intel_uncore_forcewake_put__locked(struct drm_i915_private *dev_priv, 172 enum forcewake_domains domains); 173 174 void intel_uncore_forcewake_user_get(struct drm_i915_private *dev_priv); 175 void intel_uncore_forcewake_user_put(struct drm_i915_private *dev_priv); 176 177 int __intel_wait_for_register(struct drm_i915_private *dev_priv, 178 i915_reg_t reg, 179 u32 mask, 180 u32 value, 181 unsigned int fast_timeout_us, 182 unsigned int slow_timeout_ms, 183 u32 *out_value); 184 static inline 185 int intel_wait_for_register(struct drm_i915_private *dev_priv, 186 i915_reg_t reg, 187 u32 mask, 188 u32 value, 189 unsigned int timeout_ms) 190 { 191 return __intel_wait_for_register(dev_priv, reg, mask, value, 2, 192 timeout_ms, NULL); 193 } 194 int __intel_wait_for_register_fw(struct drm_i915_private *dev_priv, 195 i915_reg_t reg, 196 u32 mask, 197 u32 value, 198 unsigned int fast_timeout_us, 199 unsigned int slow_timeout_ms, 200 u32 *out_value); 201 static inline 202 int intel_wait_for_register_fw(struct drm_i915_private *dev_priv, 203 i915_reg_t reg, 204 u32 mask, 205 u32 value, 206 unsigned int timeout_ms) 207 { 208 return __intel_wait_for_register_fw(dev_priv, reg, mask, value, 209 2, timeout_ms, NULL); 210 } 211 212 #define raw_reg_read(base, reg) \ 213 readl(base + i915_mmio_reg_offset(reg)) 214 #define raw_reg_write(base, reg, value) \ 215 writel(value, base + i915_mmio_reg_offset(reg)) 216 217 #endif /* !__INTEL_UNCORE_H__ */ 218