Daniel Vetter | 76aaf22 | 2010-11-05 22:23:30 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright © 2010 Daniel Vetter |
Ben Widawsky | c4ac524 | 2014-02-19 22:05:47 -0800 | [diff] [blame] | 3 | * Copyright © 2011-2014 Intel Corporation |
Daniel Vetter | 76aaf22 | 2010-11-05 22:23:30 +0100 | [diff] [blame] | 4 | * |
| 5 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 6 | * copy of this software and associated documentation files (the "Software"), |
| 7 | * to deal in the Software without restriction, including without limitation |
| 8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 9 | * and/or sell copies of the Software, and to permit persons to whom the |
| 10 | * Software is furnished to do so, subject to the following conditions: |
| 11 | * |
| 12 | * The above copyright notice and this permission notice (including the next |
| 13 | * paragraph) shall be included in all copies or substantial portions of the |
| 14 | * Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 22 | * IN THE SOFTWARE. |
| 23 | * |
| 24 | */ |
| 25 | |
Daniel Vetter | 0e46ce2 | 2014-01-08 16:10:27 +0100 | [diff] [blame] | 26 | #include <linux/seq_file.h> |
David Howells | 760285e | 2012-10-02 18:01:07 +0100 | [diff] [blame] | 27 | #include <drm/drmP.h> |
| 28 | #include <drm/i915_drm.h> |
Daniel Vetter | 76aaf22 | 2010-11-05 22:23:30 +0100 | [diff] [blame] | 29 | #include "i915_drv.h" |
| 30 | #include "i915_trace.h" |
| 31 | #include "intel_drv.h" |
| 32 | |
Daniel Vetter | 93a25a9 | 2014-03-06 09:40:43 +0100 | [diff] [blame] | 33 | bool intel_enable_ppgtt(struct drm_device *dev, bool full) |
| 34 | { |
| 35 | if (i915.enable_ppgtt == 0 || !HAS_ALIASING_PPGTT(dev)) |
| 36 | return false; |
| 37 | |
| 38 | if (i915.enable_ppgtt == 1 && full) |
| 39 | return false; |
| 40 | |
| 41 | #ifdef CONFIG_INTEL_IOMMU |
| 42 | /* Disable ppgtt on SNB if VT-d is on. */ |
| 43 | if (INTEL_INFO(dev)->gen == 6 && intel_iommu_gfx_mapped) { |
| 44 | DRM_INFO("Disabling PPGTT because VT-d is on\n"); |
| 45 | return false; |
| 46 | } |
| 47 | #endif |
| 48 | |
| 49 | /* Full ppgtt disabled by default for now due to issues. */ |
| 50 | if (full) |
| 51 | return false; /* HAS_PPGTT(dev) */ |
| 52 | else |
| 53 | return HAS_ALIASING_PPGTT(dev); |
| 54 | } |
| 55 | |
Ben Widawsky | 6670a5a | 2013-06-27 16:30:04 -0700 | [diff] [blame] | 56 | #define GEN6_PPGTT_PD_ENTRIES 512 |
| 57 | #define I915_PPGTT_PT_ENTRIES (PAGE_SIZE / sizeof(gen6_gtt_pte_t)) |
Ben Widawsky | d31eb10 | 2013-11-02 21:07:17 -0700 | [diff] [blame] | 58 | typedef uint64_t gen8_gtt_pte_t; |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 59 | typedef gen8_gtt_pte_t gen8_ppgtt_pde_t; |
Ben Widawsky | 6670a5a | 2013-06-27 16:30:04 -0700 | [diff] [blame] | 60 | |
Ben Widawsky | 26b1ff3 | 2012-11-04 09:21:31 -0800 | [diff] [blame] | 61 | /* PPGTT stuff */ |
| 62 | #define GEN6_GTT_ADDR_ENCODE(addr) ((addr) | (((addr) >> 28) & 0xff0)) |
Ben Widawsky | 0d8ff15 | 2013-07-04 11:02:03 -0700 | [diff] [blame] | 63 | #define HSW_GTT_ADDR_ENCODE(addr) ((addr) | (((addr) >> 28) & 0x7f0)) |
Ben Widawsky | 26b1ff3 | 2012-11-04 09:21:31 -0800 | [diff] [blame] | 64 | |
| 65 | #define GEN6_PDE_VALID (1 << 0) |
| 66 | /* gen6+ has bit 11-4 for physical addr bit 39-32 */ |
| 67 | #define GEN6_PDE_ADDR_ENCODE(addr) GEN6_GTT_ADDR_ENCODE(addr) |
| 68 | |
| 69 | #define GEN6_PTE_VALID (1 << 0) |
| 70 | #define GEN6_PTE_UNCACHED (1 << 1) |
| 71 | #define HSW_PTE_UNCACHED (0) |
| 72 | #define GEN6_PTE_CACHE_LLC (2 << 1) |
Chris Wilson | 350ec88 | 2013-08-06 13:17:02 +0100 | [diff] [blame] | 73 | #define GEN7_PTE_CACHE_L3_LLC (3 << 1) |
Ben Widawsky | 26b1ff3 | 2012-11-04 09:21:31 -0800 | [diff] [blame] | 74 | #define GEN6_PTE_ADDR_ENCODE(addr) GEN6_GTT_ADDR_ENCODE(addr) |
Ben Widawsky | 0d8ff15 | 2013-07-04 11:02:03 -0700 | [diff] [blame] | 75 | #define HSW_PTE_ADDR_ENCODE(addr) HSW_GTT_ADDR_ENCODE(addr) |
| 76 | |
| 77 | /* Cacheability Control is a 4-bit value. The low three bits are stored in * |
| 78 | * bits 3:1 of the PTE, while the fourth bit is stored in bit 11 of the PTE. |
| 79 | */ |
| 80 | #define HSW_CACHEABILITY_CONTROL(bits) ((((bits) & 0x7) << 1) | \ |
| 81 | (((bits) & 0x8) << (11 - 3))) |
Ben Widawsky | 87a6b68 | 2013-08-04 23:47:29 -0700 | [diff] [blame] | 82 | #define HSW_WB_LLC_AGE3 HSW_CACHEABILITY_CONTROL(0x2) |
Ben Widawsky | 0d8ff15 | 2013-07-04 11:02:03 -0700 | [diff] [blame] | 83 | #define HSW_WB_LLC_AGE0 HSW_CACHEABILITY_CONTROL(0x3) |
Ben Widawsky | 4d15c14 | 2013-07-04 11:02:06 -0700 | [diff] [blame] | 84 | #define HSW_WB_ELLC_LLC_AGE0 HSW_CACHEABILITY_CONTROL(0xb) |
Chris Wilson | c51e970 | 2013-11-22 10:37:53 +0000 | [diff] [blame] | 85 | #define HSW_WB_ELLC_LLC_AGE3 HSW_CACHEABILITY_CONTROL(0x8) |
Chris Wilson | 651d794 | 2013-08-08 14:41:10 +0100 | [diff] [blame] | 86 | #define HSW_WT_ELLC_LLC_AGE0 HSW_CACHEABILITY_CONTROL(0x6) |
Chris Wilson | c51e970 | 2013-11-22 10:37:53 +0000 | [diff] [blame] | 87 | #define HSW_WT_ELLC_LLC_AGE3 HSW_CACHEABILITY_CONTROL(0x7) |
Ben Widawsky | 26b1ff3 | 2012-11-04 09:21:31 -0800 | [diff] [blame] | 88 | |
Ben Widawsky | 459108b | 2013-11-02 21:07:23 -0700 | [diff] [blame] | 89 | #define GEN8_PTES_PER_PAGE (PAGE_SIZE / sizeof(gen8_gtt_pte_t)) |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 90 | #define GEN8_PDES_PER_PAGE (PAGE_SIZE / sizeof(gen8_ppgtt_pde_t)) |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 91 | |
| 92 | /* GEN8 legacy style addressis defined as a 3 level page table: |
| 93 | * 31:30 | 29:21 | 20:12 | 11:0 |
| 94 | * PDPE | PDE | PTE | offset |
| 95 | * The difference as compared to normal x86 3 level page table is the PDPEs are |
| 96 | * programmed via register. |
| 97 | */ |
| 98 | #define GEN8_PDPE_SHIFT 30 |
| 99 | #define GEN8_PDPE_MASK 0x3 |
| 100 | #define GEN8_PDE_SHIFT 21 |
| 101 | #define GEN8_PDE_MASK 0x1ff |
| 102 | #define GEN8_PTE_SHIFT 12 |
| 103 | #define GEN8_PTE_MASK 0x1ff |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 104 | |
Ben Widawsky | fbe5d36 | 2013-11-04 19:56:49 -0800 | [diff] [blame] | 105 | #define PPAT_UNCACHED_INDEX (_PAGE_PWT | _PAGE_PCD) |
| 106 | #define PPAT_CACHED_PDE_INDEX 0 /* WB LLC */ |
| 107 | #define PPAT_CACHED_INDEX _PAGE_PAT /* WB LLCeLLC */ |
| 108 | #define PPAT_DISPLAY_ELLC_INDEX _PAGE_PCD /* WT eLLC */ |
| 109 | |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 110 | static void ppgtt_bind_vma(struct i915_vma *vma, |
| 111 | enum i915_cache_level cache_level, |
| 112 | u32 flags); |
| 113 | static void ppgtt_unbind_vma(struct i915_vma *vma); |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 114 | static int gen8_ppgtt_enable(struct i915_hw_ppgtt *ppgtt); |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 115 | |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 116 | static inline gen8_gtt_pte_t gen8_pte_encode(dma_addr_t addr, |
| 117 | enum i915_cache_level level, |
| 118 | bool valid) |
| 119 | { |
| 120 | gen8_gtt_pte_t pte = valid ? _PAGE_PRESENT | _PAGE_RW : 0; |
| 121 | pte |= addr; |
Ben Widawsky | fbe5d36 | 2013-11-04 19:56:49 -0800 | [diff] [blame] | 122 | if (level != I915_CACHE_NONE) |
| 123 | pte |= PPAT_CACHED_INDEX; |
| 124 | else |
| 125 | pte |= PPAT_UNCACHED_INDEX; |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 126 | return pte; |
| 127 | } |
| 128 | |
Ben Widawsky | b1fe667 | 2013-11-04 21:20:14 -0800 | [diff] [blame] | 129 | static inline gen8_ppgtt_pde_t gen8_pde_encode(struct drm_device *dev, |
| 130 | dma_addr_t addr, |
| 131 | enum i915_cache_level level) |
| 132 | { |
| 133 | gen8_ppgtt_pde_t pde = _PAGE_PRESENT | _PAGE_RW; |
| 134 | pde |= addr; |
| 135 | if (level != I915_CACHE_NONE) |
| 136 | pde |= PPAT_CACHED_PDE_INDEX; |
| 137 | else |
| 138 | pde |= PPAT_UNCACHED_INDEX; |
| 139 | return pde; |
| 140 | } |
| 141 | |
Chris Wilson | 350ec88 | 2013-08-06 13:17:02 +0100 | [diff] [blame] | 142 | static gen6_gtt_pte_t snb_pte_encode(dma_addr_t addr, |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 143 | enum i915_cache_level level, |
| 144 | bool valid) |
Ben Widawsky | 54d1252 | 2012-09-24 16:44:32 -0700 | [diff] [blame] | 145 | { |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 146 | gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
Ben Widawsky | 54d1252 | 2012-09-24 16:44:32 -0700 | [diff] [blame] | 147 | pte |= GEN6_PTE_ADDR_ENCODE(addr); |
Ben Widawsky | e7210c3 | 2012-10-19 09:33:22 -0700 | [diff] [blame] | 148 | |
| 149 | switch (level) { |
Chris Wilson | 350ec88 | 2013-08-06 13:17:02 +0100 | [diff] [blame] | 150 | case I915_CACHE_L3_LLC: |
| 151 | case I915_CACHE_LLC: |
| 152 | pte |= GEN6_PTE_CACHE_LLC; |
| 153 | break; |
| 154 | case I915_CACHE_NONE: |
| 155 | pte |= GEN6_PTE_UNCACHED; |
| 156 | break; |
| 157 | default: |
| 158 | WARN_ON(1); |
| 159 | } |
| 160 | |
| 161 | return pte; |
| 162 | } |
| 163 | |
| 164 | static gen6_gtt_pte_t ivb_pte_encode(dma_addr_t addr, |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 165 | enum i915_cache_level level, |
| 166 | bool valid) |
Chris Wilson | 350ec88 | 2013-08-06 13:17:02 +0100 | [diff] [blame] | 167 | { |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 168 | gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
Chris Wilson | 350ec88 | 2013-08-06 13:17:02 +0100 | [diff] [blame] | 169 | pte |= GEN6_PTE_ADDR_ENCODE(addr); |
| 170 | |
| 171 | switch (level) { |
| 172 | case I915_CACHE_L3_LLC: |
| 173 | pte |= GEN7_PTE_CACHE_L3_LLC; |
Ben Widawsky | e7210c3 | 2012-10-19 09:33:22 -0700 | [diff] [blame] | 174 | break; |
| 175 | case I915_CACHE_LLC: |
| 176 | pte |= GEN6_PTE_CACHE_LLC; |
| 177 | break; |
| 178 | case I915_CACHE_NONE: |
Kenneth Graunke | 9119708 | 2013-04-22 00:53:51 -0700 | [diff] [blame] | 179 | pte |= GEN6_PTE_UNCACHED; |
Ben Widawsky | e7210c3 | 2012-10-19 09:33:22 -0700 | [diff] [blame] | 180 | break; |
| 181 | default: |
Chris Wilson | 350ec88 | 2013-08-06 13:17:02 +0100 | [diff] [blame] | 182 | WARN_ON(1); |
Ben Widawsky | e7210c3 | 2012-10-19 09:33:22 -0700 | [diff] [blame] | 183 | } |
| 184 | |
Ben Widawsky | 54d1252 | 2012-09-24 16:44:32 -0700 | [diff] [blame] | 185 | return pte; |
| 186 | } |
| 187 | |
Kenneth Graunke | 93c34e7 | 2013-04-22 00:53:50 -0700 | [diff] [blame] | 188 | #define BYT_PTE_WRITEABLE (1 << 1) |
| 189 | #define BYT_PTE_SNOOPED_BY_CPU_CACHES (1 << 2) |
| 190 | |
Ben Widawsky | 80a74f7 | 2013-06-27 16:30:19 -0700 | [diff] [blame] | 191 | static gen6_gtt_pte_t byt_pte_encode(dma_addr_t addr, |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 192 | enum i915_cache_level level, |
| 193 | bool valid) |
Kenneth Graunke | 93c34e7 | 2013-04-22 00:53:50 -0700 | [diff] [blame] | 194 | { |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 195 | gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
Kenneth Graunke | 93c34e7 | 2013-04-22 00:53:50 -0700 | [diff] [blame] | 196 | pte |= GEN6_PTE_ADDR_ENCODE(addr); |
| 197 | |
| 198 | /* Mark the page as writeable. Other platforms don't have a |
| 199 | * setting for read-only/writable, so this matches that behavior. |
| 200 | */ |
| 201 | pte |= BYT_PTE_WRITEABLE; |
| 202 | |
| 203 | if (level != I915_CACHE_NONE) |
| 204 | pte |= BYT_PTE_SNOOPED_BY_CPU_CACHES; |
| 205 | |
| 206 | return pte; |
| 207 | } |
| 208 | |
Ben Widawsky | 80a74f7 | 2013-06-27 16:30:19 -0700 | [diff] [blame] | 209 | static gen6_gtt_pte_t hsw_pte_encode(dma_addr_t addr, |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 210 | enum i915_cache_level level, |
| 211 | bool valid) |
Kenneth Graunke | 9119708 | 2013-04-22 00:53:51 -0700 | [diff] [blame] | 212 | { |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 213 | gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
Ben Widawsky | 0d8ff15 | 2013-07-04 11:02:03 -0700 | [diff] [blame] | 214 | pte |= HSW_PTE_ADDR_ENCODE(addr); |
Kenneth Graunke | 9119708 | 2013-04-22 00:53:51 -0700 | [diff] [blame] | 215 | |
| 216 | if (level != I915_CACHE_NONE) |
Ben Widawsky | 87a6b68 | 2013-08-04 23:47:29 -0700 | [diff] [blame] | 217 | pte |= HSW_WB_LLC_AGE3; |
Kenneth Graunke | 9119708 | 2013-04-22 00:53:51 -0700 | [diff] [blame] | 218 | |
| 219 | return pte; |
| 220 | } |
| 221 | |
Ben Widawsky | 4d15c14 | 2013-07-04 11:02:06 -0700 | [diff] [blame] | 222 | static gen6_gtt_pte_t iris_pte_encode(dma_addr_t addr, |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 223 | enum i915_cache_level level, |
| 224 | bool valid) |
Ben Widawsky | 4d15c14 | 2013-07-04 11:02:06 -0700 | [diff] [blame] | 225 | { |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 226 | gen6_gtt_pte_t pte = valid ? GEN6_PTE_VALID : 0; |
Ben Widawsky | 4d15c14 | 2013-07-04 11:02:06 -0700 | [diff] [blame] | 227 | pte |= HSW_PTE_ADDR_ENCODE(addr); |
| 228 | |
Chris Wilson | 651d794 | 2013-08-08 14:41:10 +0100 | [diff] [blame] | 229 | switch (level) { |
| 230 | case I915_CACHE_NONE: |
| 231 | break; |
| 232 | case I915_CACHE_WT: |
Chris Wilson | c51e970 | 2013-11-22 10:37:53 +0000 | [diff] [blame] | 233 | pte |= HSW_WT_ELLC_LLC_AGE3; |
Chris Wilson | 651d794 | 2013-08-08 14:41:10 +0100 | [diff] [blame] | 234 | break; |
| 235 | default: |
Chris Wilson | c51e970 | 2013-11-22 10:37:53 +0000 | [diff] [blame] | 236 | pte |= HSW_WB_ELLC_LLC_AGE3; |
Chris Wilson | 651d794 | 2013-08-08 14:41:10 +0100 | [diff] [blame] | 237 | break; |
| 238 | } |
Ben Widawsky | 4d15c14 | 2013-07-04 11:02:06 -0700 | [diff] [blame] | 239 | |
| 240 | return pte; |
| 241 | } |
| 242 | |
Ben Widawsky | 94e409c | 2013-11-04 22:29:36 -0800 | [diff] [blame] | 243 | /* Broadwell Page Directory Pointer Descriptors */ |
| 244 | static int gen8_write_pdp(struct intel_ring_buffer *ring, unsigned entry, |
Ben Widawsky | e178f70 | 2013-12-06 14:10:47 -0800 | [diff] [blame] | 245 | uint64_t val, bool synchronous) |
Ben Widawsky | 94e409c | 2013-11-04 22:29:36 -0800 | [diff] [blame] | 246 | { |
Ben Widawsky | e178f70 | 2013-12-06 14:10:47 -0800 | [diff] [blame] | 247 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
Ben Widawsky | 94e409c | 2013-11-04 22:29:36 -0800 | [diff] [blame] | 248 | int ret; |
| 249 | |
| 250 | BUG_ON(entry >= 4); |
| 251 | |
Ben Widawsky | e178f70 | 2013-12-06 14:10:47 -0800 | [diff] [blame] | 252 | if (synchronous) { |
| 253 | I915_WRITE(GEN8_RING_PDP_UDW(ring, entry), val >> 32); |
| 254 | I915_WRITE(GEN8_RING_PDP_LDW(ring, entry), (u32)val); |
| 255 | return 0; |
| 256 | } |
| 257 | |
Ben Widawsky | 94e409c | 2013-11-04 22:29:36 -0800 | [diff] [blame] | 258 | ret = intel_ring_begin(ring, 6); |
| 259 | if (ret) |
| 260 | return ret; |
| 261 | |
| 262 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1)); |
| 263 | intel_ring_emit(ring, GEN8_RING_PDP_UDW(ring, entry)); |
| 264 | intel_ring_emit(ring, (u32)(val >> 32)); |
| 265 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1)); |
| 266 | intel_ring_emit(ring, GEN8_RING_PDP_LDW(ring, entry)); |
| 267 | intel_ring_emit(ring, (u32)(val)); |
| 268 | intel_ring_advance(ring); |
| 269 | |
| 270 | return 0; |
| 271 | } |
| 272 | |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 273 | static int gen8_mm_switch(struct i915_hw_ppgtt *ppgtt, |
| 274 | struct intel_ring_buffer *ring, |
| 275 | bool synchronous) |
Ben Widawsky | 94e409c | 2013-11-04 22:29:36 -0800 | [diff] [blame] | 276 | { |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 277 | int i, ret; |
Ben Widawsky | 94e409c | 2013-11-04 22:29:36 -0800 | [diff] [blame] | 278 | |
| 279 | /* bit of a hack to find the actual last used pd */ |
| 280 | int used_pd = ppgtt->num_pd_entries / GEN8_PDES_PER_PAGE; |
| 281 | |
Ben Widawsky | 94e409c | 2013-11-04 22:29:36 -0800 | [diff] [blame] | 282 | for (i = used_pd - 1; i >= 0; i--) { |
| 283 | dma_addr_t addr = ppgtt->pd_dma_addr[i]; |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 284 | ret = gen8_write_pdp(ring, i, addr, synchronous); |
| 285 | if (ret) |
| 286 | return ret; |
Ben Widawsky | 94e409c | 2013-11-04 22:29:36 -0800 | [diff] [blame] | 287 | } |
Ben Widawsky | d595bd4 | 2013-11-25 09:54:32 -0800 | [diff] [blame] | 288 | |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 289 | return 0; |
Ben Widawsky | 94e409c | 2013-11-04 22:29:36 -0800 | [diff] [blame] | 290 | } |
| 291 | |
Ben Widawsky | 459108b | 2013-11-02 21:07:23 -0700 | [diff] [blame] | 292 | static void gen8_ppgtt_clear_range(struct i915_address_space *vm, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 293 | uint64_t start, |
| 294 | uint64_t length, |
Ben Widawsky | 459108b | 2013-11-02 21:07:23 -0700 | [diff] [blame] | 295 | bool use_scratch) |
| 296 | { |
| 297 | struct i915_hw_ppgtt *ppgtt = |
| 298 | container_of(vm, struct i915_hw_ppgtt, base); |
| 299 | gen8_gtt_pte_t *pt_vaddr, scratch_pte; |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 300 | unsigned pdpe = start >> GEN8_PDPE_SHIFT & GEN8_PDPE_MASK; |
| 301 | unsigned pde = start >> GEN8_PDE_SHIFT & GEN8_PDE_MASK; |
| 302 | unsigned pte = start >> GEN8_PTE_SHIFT & GEN8_PTE_MASK; |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 303 | unsigned num_entries = length >> PAGE_SHIFT; |
Ben Widawsky | 459108b | 2013-11-02 21:07:23 -0700 | [diff] [blame] | 304 | unsigned last_pte, i; |
| 305 | |
| 306 | scratch_pte = gen8_pte_encode(ppgtt->base.scratch.addr, |
| 307 | I915_CACHE_LLC, use_scratch); |
| 308 | |
| 309 | while (num_entries) { |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 310 | struct page *page_table = ppgtt->gen8_pt_pages[pdpe][pde]; |
Ben Widawsky | 459108b | 2013-11-02 21:07:23 -0700 | [diff] [blame] | 311 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 312 | last_pte = pte + num_entries; |
Ben Widawsky | 459108b | 2013-11-02 21:07:23 -0700 | [diff] [blame] | 313 | if (last_pte > GEN8_PTES_PER_PAGE) |
| 314 | last_pte = GEN8_PTES_PER_PAGE; |
| 315 | |
| 316 | pt_vaddr = kmap_atomic(page_table); |
| 317 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 318 | for (i = pte; i < last_pte; i++) { |
Ben Widawsky | 459108b | 2013-11-02 21:07:23 -0700 | [diff] [blame] | 319 | pt_vaddr[i] = scratch_pte; |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 320 | num_entries--; |
| 321 | } |
Ben Widawsky | 459108b | 2013-11-02 21:07:23 -0700 | [diff] [blame] | 322 | |
| 323 | kunmap_atomic(pt_vaddr); |
| 324 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 325 | pte = 0; |
| 326 | if (++pde == GEN8_PDES_PER_PAGE) { |
| 327 | pdpe++; |
| 328 | pde = 0; |
| 329 | } |
Ben Widawsky | 459108b | 2013-11-02 21:07:23 -0700 | [diff] [blame] | 330 | } |
| 331 | } |
| 332 | |
Ben Widawsky | 9df15b4 | 2013-11-02 21:07:24 -0700 | [diff] [blame] | 333 | static void gen8_ppgtt_insert_entries(struct i915_address_space *vm, |
| 334 | struct sg_table *pages, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 335 | uint64_t start, |
Ben Widawsky | 9df15b4 | 2013-11-02 21:07:24 -0700 | [diff] [blame] | 336 | enum i915_cache_level cache_level) |
| 337 | { |
| 338 | struct i915_hw_ppgtt *ppgtt = |
| 339 | container_of(vm, struct i915_hw_ppgtt, base); |
| 340 | gen8_gtt_pte_t *pt_vaddr; |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 341 | unsigned pdpe = start >> GEN8_PDPE_SHIFT & GEN8_PDPE_MASK; |
| 342 | unsigned pde = start >> GEN8_PDE_SHIFT & GEN8_PDE_MASK; |
| 343 | unsigned pte = start >> GEN8_PTE_SHIFT & GEN8_PTE_MASK; |
Ben Widawsky | 9df15b4 | 2013-11-02 21:07:24 -0700 | [diff] [blame] | 344 | struct sg_page_iter sg_iter; |
| 345 | |
Chris Wilson | 6f1cc99 | 2013-12-31 15:50:31 +0000 | [diff] [blame] | 346 | pt_vaddr = NULL; |
Ben Widawsky | 9df15b4 | 2013-11-02 21:07:24 -0700 | [diff] [blame] | 347 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 348 | for_each_sg_page(pages->sgl, &sg_iter, pages->nents, 0) { |
| 349 | if (WARN_ON(pdpe >= GEN8_LEGACY_PDPS)) |
| 350 | break; |
| 351 | |
| 352 | if (pt_vaddr == NULL) |
| 353 | pt_vaddr = kmap_atomic(ppgtt->gen8_pt_pages[pdpe][pde]); |
| 354 | |
| 355 | pt_vaddr[pte] = |
Chris Wilson | 6f1cc99 | 2013-12-31 15:50:31 +0000 | [diff] [blame] | 356 | gen8_pte_encode(sg_page_iter_dma_address(&sg_iter), |
| 357 | cache_level, true); |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 358 | if (++pte == GEN8_PTES_PER_PAGE) { |
Ben Widawsky | 9df15b4 | 2013-11-02 21:07:24 -0700 | [diff] [blame] | 359 | kunmap_atomic(pt_vaddr); |
Chris Wilson | 6f1cc99 | 2013-12-31 15:50:31 +0000 | [diff] [blame] | 360 | pt_vaddr = NULL; |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 361 | if (++pde == GEN8_PDES_PER_PAGE) { |
| 362 | pdpe++; |
| 363 | pde = 0; |
| 364 | } |
| 365 | pte = 0; |
Ben Widawsky | 9df15b4 | 2013-11-02 21:07:24 -0700 | [diff] [blame] | 366 | } |
| 367 | } |
Chris Wilson | 6f1cc99 | 2013-12-31 15:50:31 +0000 | [diff] [blame] | 368 | if (pt_vaddr) |
| 369 | kunmap_atomic(pt_vaddr); |
Ben Widawsky | 9df15b4 | 2013-11-02 21:07:24 -0700 | [diff] [blame] | 370 | } |
| 371 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 372 | static void gen8_free_page_tables(struct page **pt_pages) |
Ben Widawsky | b45a671 | 2014-02-12 14:28:44 -0800 | [diff] [blame] | 373 | { |
| 374 | int i; |
| 375 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 376 | if (pt_pages == NULL) |
| 377 | return; |
Ben Widawsky | b45a671 | 2014-02-12 14:28:44 -0800 | [diff] [blame] | 378 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 379 | for (i = 0; i < GEN8_PDES_PER_PAGE; i++) |
| 380 | if (pt_pages[i]) |
| 381 | __free_pages(pt_pages[i], 0); |
| 382 | } |
| 383 | |
| 384 | static void gen8_ppgtt_free(const struct i915_hw_ppgtt *ppgtt) |
| 385 | { |
| 386 | int i; |
| 387 | |
| 388 | for (i = 0; i < ppgtt->num_pd_pages; i++) { |
| 389 | gen8_free_page_tables(ppgtt->gen8_pt_pages[i]); |
| 390 | kfree(ppgtt->gen8_pt_pages[i]); |
| 391 | kfree(ppgtt->gen8_pt_dma_addr[i]); |
| 392 | } |
| 393 | |
Ben Widawsky | b45a671 | 2014-02-12 14:28:44 -0800 | [diff] [blame] | 394 | __free_pages(ppgtt->pd_pages, get_order(ppgtt->num_pd_pages << PAGE_SHIFT)); |
| 395 | } |
| 396 | |
| 397 | static void gen8_ppgtt_unmap_pages(struct i915_hw_ppgtt *ppgtt) |
| 398 | { |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 399 | struct pci_dev *hwdev = ppgtt->base.dev->pdev; |
Ben Widawsky | b45a671 | 2014-02-12 14:28:44 -0800 | [diff] [blame] | 400 | int i, j; |
| 401 | |
| 402 | for (i = 0; i < ppgtt->num_pd_pages; i++) { |
| 403 | /* TODO: In the future we'll support sparse mappings, so this |
| 404 | * will have to change. */ |
| 405 | if (!ppgtt->pd_dma_addr[i]) |
| 406 | continue; |
| 407 | |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 408 | pci_unmap_page(hwdev, ppgtt->pd_dma_addr[i], PAGE_SIZE, |
| 409 | PCI_DMA_BIDIRECTIONAL); |
Ben Widawsky | b45a671 | 2014-02-12 14:28:44 -0800 | [diff] [blame] | 410 | |
| 411 | for (j = 0; j < GEN8_PDES_PER_PAGE; j++) { |
| 412 | dma_addr_t addr = ppgtt->gen8_pt_dma_addr[i][j]; |
| 413 | if (addr) |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 414 | pci_unmap_page(hwdev, addr, PAGE_SIZE, |
| 415 | PCI_DMA_BIDIRECTIONAL); |
Ben Widawsky | b45a671 | 2014-02-12 14:28:44 -0800 | [diff] [blame] | 416 | } |
| 417 | } |
| 418 | } |
| 419 | |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 420 | static void gen8_ppgtt_cleanup(struct i915_address_space *vm) |
| 421 | { |
| 422 | struct i915_hw_ppgtt *ppgtt = |
| 423 | container_of(vm, struct i915_hw_ppgtt, base); |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 424 | |
Ben Widawsky | 7e0d96b | 2013-12-06 14:11:26 -0800 | [diff] [blame] | 425 | list_del(&vm->global_link); |
Ben Widawsky | 686e1f6f | 2013-11-25 09:54:34 -0800 | [diff] [blame] | 426 | drm_mm_takedown(&vm->mm); |
| 427 | |
Ben Widawsky | b45a671 | 2014-02-12 14:28:44 -0800 | [diff] [blame] | 428 | gen8_ppgtt_unmap_pages(ppgtt); |
| 429 | gen8_ppgtt_free(ppgtt); |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 430 | } |
| 431 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 432 | static struct page **__gen8_alloc_page_tables(void) |
| 433 | { |
| 434 | struct page **pt_pages; |
| 435 | int i; |
| 436 | |
| 437 | pt_pages = kcalloc(GEN8_PDES_PER_PAGE, sizeof(struct page *), GFP_KERNEL); |
| 438 | if (!pt_pages) |
| 439 | return ERR_PTR(-ENOMEM); |
| 440 | |
| 441 | for (i = 0; i < GEN8_PDES_PER_PAGE; i++) { |
| 442 | pt_pages[i] = alloc_page(GFP_KERNEL); |
| 443 | if (!pt_pages[i]) |
| 444 | goto bail; |
| 445 | } |
| 446 | |
| 447 | return pt_pages; |
| 448 | |
| 449 | bail: |
| 450 | gen8_free_page_tables(pt_pages); |
| 451 | kfree(pt_pages); |
| 452 | return ERR_PTR(-ENOMEM); |
| 453 | } |
| 454 | |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 455 | static int gen8_ppgtt_allocate_page_tables(struct i915_hw_ppgtt *ppgtt, |
| 456 | const int max_pdp) |
| 457 | { |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 458 | struct page **pt_pages[GEN8_LEGACY_PDPS]; |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 459 | int i, ret; |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 460 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 461 | for (i = 0; i < max_pdp; i++) { |
| 462 | pt_pages[i] = __gen8_alloc_page_tables(); |
| 463 | if (IS_ERR(pt_pages[i])) { |
| 464 | ret = PTR_ERR(pt_pages[i]); |
| 465 | goto unwind_out; |
| 466 | } |
| 467 | } |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 468 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 469 | /* NB: Avoid touching gen8_pt_pages until last to keep the allocation, |
| 470 | * "atomic" - for cleanup purposes. |
| 471 | */ |
| 472 | for (i = 0; i < max_pdp; i++) |
| 473 | ppgtt->gen8_pt_pages[i] = pt_pages[i]; |
| 474 | |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 475 | return 0; |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 476 | |
| 477 | unwind_out: |
| 478 | while (i--) { |
| 479 | gen8_free_page_tables(pt_pages[i]); |
| 480 | kfree(pt_pages[i]); |
| 481 | } |
| 482 | |
| 483 | return ret; |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | static int gen8_ppgtt_allocate_dma(struct i915_hw_ppgtt *ppgtt) |
| 487 | { |
| 488 | int i; |
| 489 | |
| 490 | for (i = 0; i < ppgtt->num_pd_pages; i++) { |
| 491 | ppgtt->gen8_pt_dma_addr[i] = kcalloc(GEN8_PDES_PER_PAGE, |
| 492 | sizeof(dma_addr_t), |
| 493 | GFP_KERNEL); |
| 494 | if (!ppgtt->gen8_pt_dma_addr[i]) |
| 495 | return -ENOMEM; |
| 496 | } |
| 497 | |
| 498 | return 0; |
| 499 | } |
| 500 | |
| 501 | static int gen8_ppgtt_allocate_page_directories(struct i915_hw_ppgtt *ppgtt, |
| 502 | const int max_pdp) |
| 503 | { |
| 504 | ppgtt->pd_pages = alloc_pages(GFP_KERNEL, get_order(max_pdp << PAGE_SHIFT)); |
| 505 | if (!ppgtt->pd_pages) |
| 506 | return -ENOMEM; |
| 507 | |
| 508 | ppgtt->num_pd_pages = 1 << get_order(max_pdp << PAGE_SHIFT); |
| 509 | BUG_ON(ppgtt->num_pd_pages > GEN8_LEGACY_PDPS); |
| 510 | |
| 511 | return 0; |
| 512 | } |
| 513 | |
| 514 | static int gen8_ppgtt_alloc(struct i915_hw_ppgtt *ppgtt, |
| 515 | const int max_pdp) |
| 516 | { |
| 517 | int ret; |
| 518 | |
| 519 | ret = gen8_ppgtt_allocate_page_directories(ppgtt, max_pdp); |
| 520 | if (ret) |
| 521 | return ret; |
| 522 | |
| 523 | ret = gen8_ppgtt_allocate_page_tables(ppgtt, max_pdp); |
| 524 | if (ret) { |
| 525 | __free_pages(ppgtt->pd_pages, get_order(max_pdp << PAGE_SHIFT)); |
| 526 | return ret; |
| 527 | } |
| 528 | |
| 529 | ppgtt->num_pd_entries = max_pdp * GEN8_PDES_PER_PAGE; |
| 530 | |
| 531 | ret = gen8_ppgtt_allocate_dma(ppgtt); |
| 532 | if (ret) |
| 533 | gen8_ppgtt_free(ppgtt); |
| 534 | |
| 535 | return ret; |
| 536 | } |
| 537 | |
| 538 | static int gen8_ppgtt_setup_page_directories(struct i915_hw_ppgtt *ppgtt, |
| 539 | const int pd) |
| 540 | { |
| 541 | dma_addr_t pd_addr; |
| 542 | int ret; |
| 543 | |
| 544 | pd_addr = pci_map_page(ppgtt->base.dev->pdev, |
| 545 | &ppgtt->pd_pages[pd], 0, |
| 546 | PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); |
| 547 | |
| 548 | ret = pci_dma_mapping_error(ppgtt->base.dev->pdev, pd_addr); |
| 549 | if (ret) |
| 550 | return ret; |
| 551 | |
| 552 | ppgtt->pd_dma_addr[pd] = pd_addr; |
| 553 | |
| 554 | return 0; |
| 555 | } |
| 556 | |
| 557 | static int gen8_ppgtt_setup_page_tables(struct i915_hw_ppgtt *ppgtt, |
| 558 | const int pd, |
| 559 | const int pt) |
| 560 | { |
| 561 | dma_addr_t pt_addr; |
| 562 | struct page *p; |
| 563 | int ret; |
| 564 | |
Ben Widawsky | 7ad47cf | 2014-02-20 11:51:21 -0800 | [diff] [blame] | 565 | p = ppgtt->gen8_pt_pages[pd][pt]; |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 566 | pt_addr = pci_map_page(ppgtt->base.dev->pdev, |
| 567 | p, 0, PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); |
| 568 | ret = pci_dma_mapping_error(ppgtt->base.dev->pdev, pt_addr); |
| 569 | if (ret) |
| 570 | return ret; |
| 571 | |
| 572 | ppgtt->gen8_pt_dma_addr[pd][pt] = pt_addr; |
| 573 | |
| 574 | return 0; |
| 575 | } |
| 576 | |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 577 | /** |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 578 | * GEN8 legacy ppgtt programming is accomplished through a max 4 PDP registers |
| 579 | * with a net effect resembling a 2-level page table in normal x86 terms. Each |
| 580 | * PDP represents 1GB of memory 4 * 512 * 512 * 4096 = 4GB legacy 32b address |
| 581 | * space. |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 582 | * |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 583 | * FIXME: split allocation into smaller pieces. For now we only ever do this |
| 584 | * once, but with full PPGTT, the multiple contiguous allocations will be bad. |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 585 | * TODO: Do something with the size parameter |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 586 | */ |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 587 | static int gen8_ppgtt_init(struct i915_hw_ppgtt *ppgtt, uint64_t size) |
| 588 | { |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 589 | const int max_pdp = DIV_ROUND_UP(size, 1 << 30); |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 590 | const int min_pt_pages = GEN8_PDES_PER_PAGE * max_pdp; |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 591 | int i, j, ret; |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 592 | |
| 593 | if (size % (1<<30)) |
| 594 | DRM_INFO("Pages will be wasted unless GTT size (%llu) is divisible by 1GB\n", size); |
| 595 | |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 596 | /* 1. Do all our allocations for page directories and page tables. */ |
| 597 | ret = gen8_ppgtt_alloc(ppgtt, max_pdp); |
| 598 | if (ret) |
| 599 | return ret; |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 600 | |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 601 | /* |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 602 | * 2. Create DMA mappings for the page directories and page tables. |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 603 | */ |
| 604 | for (i = 0; i < max_pdp; i++) { |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 605 | ret = gen8_ppgtt_setup_page_directories(ppgtt, i); |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 606 | if (ret) |
| 607 | goto bail; |
| 608 | |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 609 | for (j = 0; j < GEN8_PDES_PER_PAGE; j++) { |
Ben Widawsky | bf2b4ed | 2014-02-19 22:05:43 -0800 | [diff] [blame] | 610 | ret = gen8_ppgtt_setup_page_tables(ppgtt, i, j); |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 611 | if (ret) |
| 612 | goto bail; |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 613 | } |
| 614 | } |
| 615 | |
| 616 | /* |
| 617 | * 3. Map all the page directory entires to point to the page tables |
| 618 | * we've allocated. |
| 619 | * |
| 620 | * For now, the PPGTT helper functions all require that the PDEs are |
Ben Widawsky | b1fe667 | 2013-11-04 21:20:14 -0800 | [diff] [blame] | 621 | * plugged in correctly. So we do that now/here. For aliasing PPGTT, we |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 622 | * will never need to touch the PDEs again. |
| 623 | */ |
Ben Widawsky | b1fe667 | 2013-11-04 21:20:14 -0800 | [diff] [blame] | 624 | for (i = 0; i < max_pdp; i++) { |
| 625 | gen8_ppgtt_pde_t *pd_vaddr; |
| 626 | pd_vaddr = kmap_atomic(&ppgtt->pd_pages[i]); |
| 627 | for (j = 0; j < GEN8_PDES_PER_PAGE; j++) { |
| 628 | dma_addr_t addr = ppgtt->gen8_pt_dma_addr[i][j]; |
| 629 | pd_vaddr[j] = gen8_pde_encode(ppgtt->base.dev, addr, |
| 630 | I915_CACHE_LLC); |
| 631 | } |
| 632 | kunmap_atomic(pd_vaddr); |
| 633 | } |
| 634 | |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 635 | ppgtt->enable = gen8_ppgtt_enable; |
| 636 | ppgtt->switch_mm = gen8_mm_switch; |
| 637 | ppgtt->base.clear_range = gen8_ppgtt_clear_range; |
| 638 | ppgtt->base.insert_entries = gen8_ppgtt_insert_entries; |
| 639 | ppgtt->base.cleanup = gen8_ppgtt_cleanup; |
| 640 | ppgtt->base.start = 0; |
Ben Widawsky | 5abbcca | 2014-02-21 13:06:34 -0800 | [diff] [blame] | 641 | ppgtt->base.total = ppgtt->num_pd_entries * GEN8_PTES_PER_PAGE * PAGE_SIZE; |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 642 | |
Ben Widawsky | 5abbcca | 2014-02-21 13:06:34 -0800 | [diff] [blame] | 643 | ppgtt->base.clear_range(&ppgtt->base, 0, ppgtt->base.total, true); |
Ben Widawsky | 459108b | 2013-11-02 21:07:23 -0700 | [diff] [blame] | 644 | |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 645 | DRM_DEBUG_DRIVER("Allocated %d pages for page directories (%d wasted)\n", |
| 646 | ppgtt->num_pd_pages, ppgtt->num_pd_pages - max_pdp); |
| 647 | DRM_DEBUG_DRIVER("Allocated %d pages for page tables (%lld wasted)\n", |
Ben Widawsky | 5abbcca | 2014-02-21 13:06:34 -0800 | [diff] [blame] | 648 | ppgtt->num_pd_entries, |
| 649 | (ppgtt->num_pd_entries - min_pt_pages) + size % (1<<30)); |
Ben Widawsky | 28cf541 | 2013-11-02 21:07:26 -0700 | [diff] [blame] | 650 | return 0; |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 651 | |
Ben Widawsky | f3a964b | 2014-02-19 22:05:42 -0800 | [diff] [blame] | 652 | bail: |
| 653 | gen8_ppgtt_unmap_pages(ppgtt); |
| 654 | gen8_ppgtt_free(ppgtt); |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 655 | return ret; |
| 656 | } |
| 657 | |
Ben Widawsky | 87d60b6 | 2013-12-06 14:11:29 -0800 | [diff] [blame] | 658 | static void gen6_dump_ppgtt(struct i915_hw_ppgtt *ppgtt, struct seq_file *m) |
| 659 | { |
| 660 | struct drm_i915_private *dev_priv = ppgtt->base.dev->dev_private; |
| 661 | struct i915_address_space *vm = &ppgtt->base; |
| 662 | gen6_gtt_pte_t __iomem *pd_addr; |
| 663 | gen6_gtt_pte_t scratch_pte; |
| 664 | uint32_t pd_entry; |
| 665 | int pte, pde; |
| 666 | |
| 667 | scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC, true); |
| 668 | |
| 669 | pd_addr = (gen6_gtt_pte_t __iomem *)dev_priv->gtt.gsm + |
| 670 | ppgtt->pd_offset / sizeof(gen6_gtt_pte_t); |
| 671 | |
| 672 | seq_printf(m, " VM %p (pd_offset %x-%x):\n", vm, |
| 673 | ppgtt->pd_offset, ppgtt->pd_offset + ppgtt->num_pd_entries); |
| 674 | for (pde = 0; pde < ppgtt->num_pd_entries; pde++) { |
| 675 | u32 expected; |
| 676 | gen6_gtt_pte_t *pt_vaddr; |
| 677 | dma_addr_t pt_addr = ppgtt->pt_dma_addr[pde]; |
| 678 | pd_entry = readl(pd_addr + pde); |
| 679 | expected = (GEN6_PDE_ADDR_ENCODE(pt_addr) | GEN6_PDE_VALID); |
| 680 | |
| 681 | if (pd_entry != expected) |
| 682 | seq_printf(m, "\tPDE #%d mismatch: Actual PDE: %x Expected PDE: %x\n", |
| 683 | pde, |
| 684 | pd_entry, |
| 685 | expected); |
| 686 | seq_printf(m, "\tPDE: %x\n", pd_entry); |
| 687 | |
| 688 | pt_vaddr = kmap_atomic(ppgtt->pt_pages[pde]); |
| 689 | for (pte = 0; pte < I915_PPGTT_PT_ENTRIES; pte+=4) { |
| 690 | unsigned long va = |
| 691 | (pde * PAGE_SIZE * I915_PPGTT_PT_ENTRIES) + |
| 692 | (pte * PAGE_SIZE); |
| 693 | int i; |
| 694 | bool found = false; |
| 695 | for (i = 0; i < 4; i++) |
| 696 | if (pt_vaddr[pte + i] != scratch_pte) |
| 697 | found = true; |
| 698 | if (!found) |
| 699 | continue; |
| 700 | |
| 701 | seq_printf(m, "\t\t0x%lx [%03d,%04d]: =", va, pde, pte); |
| 702 | for (i = 0; i < 4; i++) { |
| 703 | if (pt_vaddr[pte + i] != scratch_pte) |
| 704 | seq_printf(m, " %08x", pt_vaddr[pte + i]); |
| 705 | else |
| 706 | seq_puts(m, " SCRATCH "); |
| 707 | } |
| 708 | seq_puts(m, "\n"); |
| 709 | } |
| 710 | kunmap_atomic(pt_vaddr); |
| 711 | } |
| 712 | } |
| 713 | |
Ben Widawsky | 3e30254 | 2013-04-23 23:15:32 -0700 | [diff] [blame] | 714 | static void gen6_write_pdes(struct i915_hw_ppgtt *ppgtt) |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 715 | { |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 716 | struct drm_i915_private *dev_priv = ppgtt->base.dev->dev_private; |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 717 | gen6_gtt_pte_t __iomem *pd_addr; |
| 718 | uint32_t pd_entry; |
| 719 | int i; |
| 720 | |
Ben Widawsky | 0a73287 | 2013-04-23 23:15:30 -0700 | [diff] [blame] | 721 | WARN_ON(ppgtt->pd_offset & 0x3f); |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 722 | pd_addr = (gen6_gtt_pte_t __iomem*)dev_priv->gtt.gsm + |
| 723 | ppgtt->pd_offset / sizeof(gen6_gtt_pte_t); |
| 724 | for (i = 0; i < ppgtt->num_pd_entries; i++) { |
| 725 | dma_addr_t pt_addr; |
| 726 | |
| 727 | pt_addr = ppgtt->pt_dma_addr[i]; |
| 728 | pd_entry = GEN6_PDE_ADDR_ENCODE(pt_addr); |
| 729 | pd_entry |= GEN6_PDE_VALID; |
| 730 | |
| 731 | writel(pd_entry, pd_addr + i); |
| 732 | } |
| 733 | readl(pd_addr); |
Ben Widawsky | 3e30254 | 2013-04-23 23:15:32 -0700 | [diff] [blame] | 734 | } |
| 735 | |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 736 | static uint32_t get_pd_offset(struct i915_hw_ppgtt *ppgtt) |
Ben Widawsky | 3e30254 | 2013-04-23 23:15:32 -0700 | [diff] [blame] | 737 | { |
Ben Widawsky | 3e30254 | 2013-04-23 23:15:32 -0700 | [diff] [blame] | 738 | BUG_ON(ppgtt->pd_offset & 0x3f); |
| 739 | |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 740 | return (ppgtt->pd_offset / 64) << 16; |
| 741 | } |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 742 | |
Ben Widawsky | 90252e5 | 2013-12-06 14:11:12 -0800 | [diff] [blame] | 743 | static int hsw_mm_switch(struct i915_hw_ppgtt *ppgtt, |
| 744 | struct intel_ring_buffer *ring, |
| 745 | bool synchronous) |
| 746 | { |
| 747 | struct drm_device *dev = ppgtt->base.dev; |
| 748 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 749 | int ret; |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 750 | |
Ben Widawsky | 90252e5 | 2013-12-06 14:11:12 -0800 | [diff] [blame] | 751 | /* If we're in reset, we can assume the GPU is sufficiently idle to |
| 752 | * manually frob these bits. Ideally we could use the ring functions, |
| 753 | * except our error handling makes it quite difficult (can't use |
| 754 | * intel_ring_begin, ring->flush, or intel_ring_advance) |
| 755 | * |
| 756 | * FIXME: We should try not to special case reset |
| 757 | */ |
| 758 | if (synchronous || |
| 759 | i915_reset_in_progress(&dev_priv->gpu_error)) { |
| 760 | WARN_ON(ppgtt != dev_priv->mm.aliasing_ppgtt); |
| 761 | I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G); |
| 762 | I915_WRITE(RING_PP_DIR_BASE(ring), get_pd_offset(ppgtt)); |
| 763 | POSTING_READ(RING_PP_DIR_BASE(ring)); |
| 764 | return 0; |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 765 | } |
| 766 | |
Ben Widawsky | 90252e5 | 2013-12-06 14:11:12 -0800 | [diff] [blame] | 767 | /* NB: TLBs must be flushed and invalidated before a switch */ |
| 768 | ret = ring->flush(ring, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
| 769 | if (ret) |
| 770 | return ret; |
| 771 | |
| 772 | ret = intel_ring_begin(ring, 6); |
| 773 | if (ret) |
| 774 | return ret; |
| 775 | |
| 776 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(2)); |
| 777 | intel_ring_emit(ring, RING_PP_DIR_DCLV(ring)); |
| 778 | intel_ring_emit(ring, PP_DIR_DCLV_2G); |
| 779 | intel_ring_emit(ring, RING_PP_DIR_BASE(ring)); |
| 780 | intel_ring_emit(ring, get_pd_offset(ppgtt)); |
| 781 | intel_ring_emit(ring, MI_NOOP); |
| 782 | intel_ring_advance(ring); |
| 783 | |
| 784 | return 0; |
| 785 | } |
| 786 | |
Ben Widawsky | 48a1038 | 2013-12-06 14:11:11 -0800 | [diff] [blame] | 787 | static int gen7_mm_switch(struct i915_hw_ppgtt *ppgtt, |
| 788 | struct intel_ring_buffer *ring, |
| 789 | bool synchronous) |
| 790 | { |
| 791 | struct drm_device *dev = ppgtt->base.dev; |
| 792 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 793 | int ret; |
| 794 | |
| 795 | /* If we're in reset, we can assume the GPU is sufficiently idle to |
| 796 | * manually frob these bits. Ideally we could use the ring functions, |
| 797 | * except our error handling makes it quite difficult (can't use |
| 798 | * intel_ring_begin, ring->flush, or intel_ring_advance) |
| 799 | * |
| 800 | * FIXME: We should try not to special case reset |
| 801 | */ |
| 802 | if (synchronous || |
| 803 | i915_reset_in_progress(&dev_priv->gpu_error)) { |
| 804 | WARN_ON(ppgtt != dev_priv->mm.aliasing_ppgtt); |
| 805 | I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G); |
| 806 | I915_WRITE(RING_PP_DIR_BASE(ring), get_pd_offset(ppgtt)); |
| 807 | POSTING_READ(RING_PP_DIR_BASE(ring)); |
| 808 | return 0; |
| 809 | } |
| 810 | |
| 811 | /* NB: TLBs must be flushed and invalidated before a switch */ |
| 812 | ret = ring->flush(ring, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
| 813 | if (ret) |
| 814 | return ret; |
| 815 | |
| 816 | ret = intel_ring_begin(ring, 6); |
| 817 | if (ret) |
| 818 | return ret; |
| 819 | |
| 820 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(2)); |
| 821 | intel_ring_emit(ring, RING_PP_DIR_DCLV(ring)); |
| 822 | intel_ring_emit(ring, PP_DIR_DCLV_2G); |
| 823 | intel_ring_emit(ring, RING_PP_DIR_BASE(ring)); |
| 824 | intel_ring_emit(ring, get_pd_offset(ppgtt)); |
| 825 | intel_ring_emit(ring, MI_NOOP); |
| 826 | intel_ring_advance(ring); |
| 827 | |
Ben Widawsky | 90252e5 | 2013-12-06 14:11:12 -0800 | [diff] [blame] | 828 | /* XXX: RCS is the only one to auto invalidate the TLBs? */ |
| 829 | if (ring->id != RCS) { |
| 830 | ret = ring->flush(ring, I915_GEM_GPU_DOMAINS, I915_GEM_GPU_DOMAINS); |
| 831 | if (ret) |
| 832 | return ret; |
| 833 | } |
| 834 | |
Ben Widawsky | 48a1038 | 2013-12-06 14:11:11 -0800 | [diff] [blame] | 835 | return 0; |
| 836 | } |
| 837 | |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 838 | static int gen6_mm_switch(struct i915_hw_ppgtt *ppgtt, |
| 839 | struct intel_ring_buffer *ring, |
| 840 | bool synchronous) |
| 841 | { |
| 842 | struct drm_device *dev = ppgtt->base.dev; |
| 843 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 844 | |
Ben Widawsky | 48a1038 | 2013-12-06 14:11:11 -0800 | [diff] [blame] | 845 | if (!synchronous) |
| 846 | return 0; |
| 847 | |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 848 | I915_WRITE(RING_PP_DIR_DCLV(ring), PP_DIR_DCLV_2G); |
| 849 | I915_WRITE(RING_PP_DIR_BASE(ring), get_pd_offset(ppgtt)); |
| 850 | |
| 851 | POSTING_READ(RING_PP_DIR_DCLV(ring)); |
| 852 | |
| 853 | return 0; |
| 854 | } |
| 855 | |
| 856 | static int gen8_ppgtt_enable(struct i915_hw_ppgtt *ppgtt) |
| 857 | { |
| 858 | struct drm_device *dev = ppgtt->base.dev; |
| 859 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 860 | struct intel_ring_buffer *ring; |
| 861 | int j, ret; |
| 862 | |
| 863 | for_each_ring(ring, dev_priv, j) { |
| 864 | I915_WRITE(RING_MODE_GEN7(ring), |
| 865 | _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE)); |
Ben Widawsky | d2ff719 | 2013-12-06 14:11:27 -0800 | [diff] [blame] | 866 | |
| 867 | /* We promise to do a switch later with FULL PPGTT. If this is |
| 868 | * aliasing, this is the one and only switch we'll do */ |
| 869 | if (USES_FULL_PPGTT(dev)) |
| 870 | continue; |
| 871 | |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 872 | ret = ppgtt->switch_mm(ppgtt, ring, true); |
| 873 | if (ret) |
| 874 | goto err_out; |
| 875 | } |
| 876 | |
| 877 | return 0; |
| 878 | |
| 879 | err_out: |
| 880 | for_each_ring(ring, dev_priv, j) |
| 881 | I915_WRITE(RING_MODE_GEN7(ring), |
| 882 | _MASKED_BIT_DISABLE(GFX_PPGTT_ENABLE)); |
| 883 | return ret; |
| 884 | } |
| 885 | |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 886 | static int gen7_ppgtt_enable(struct i915_hw_ppgtt *ppgtt) |
| 887 | { |
| 888 | struct drm_device *dev = ppgtt->base.dev; |
| 889 | drm_i915_private_t *dev_priv = dev->dev_private; |
| 890 | struct intel_ring_buffer *ring; |
| 891 | uint32_t ecochk, ecobits; |
| 892 | int i; |
| 893 | |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 894 | ecobits = I915_READ(GAC_ECO_BITS); |
| 895 | I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_PPGTT_CACHE64B); |
| 896 | |
| 897 | ecochk = I915_READ(GAM_ECOCHK); |
| 898 | if (IS_HASWELL(dev)) { |
| 899 | ecochk |= ECOCHK_PPGTT_WB_HSW; |
| 900 | } else { |
| 901 | ecochk |= ECOCHK_PPGTT_LLC_IVB; |
| 902 | ecochk &= ~ECOCHK_PPGTT_GFDT_IVB; |
| 903 | } |
| 904 | I915_WRITE(GAM_ECOCHK, ecochk); |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 905 | |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 906 | for_each_ring(ring, dev_priv, i) { |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 907 | int ret; |
| 908 | /* GFX_MODE is per-ring on gen7+ */ |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 909 | I915_WRITE(RING_MODE_GEN7(ring), |
| 910 | _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE)); |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 911 | |
Ben Widawsky | d2ff719 | 2013-12-06 14:11:27 -0800 | [diff] [blame] | 912 | /* We promise to do a switch later with FULL PPGTT. If this is |
| 913 | * aliasing, this is the one and only switch we'll do */ |
| 914 | if (USES_FULL_PPGTT(dev)) |
| 915 | continue; |
| 916 | |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 917 | ret = ppgtt->switch_mm(ppgtt, ring, true); |
| 918 | if (ret) |
| 919 | return ret; |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 920 | } |
Ben Widawsky | d2ff719 | 2013-12-06 14:11:27 -0800 | [diff] [blame] | 921 | |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 922 | return 0; |
| 923 | } |
| 924 | |
Ben Widawsky | a3d67d2 | 2013-12-06 14:11:06 -0800 | [diff] [blame] | 925 | static int gen6_ppgtt_enable(struct i915_hw_ppgtt *ppgtt) |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 926 | { |
Ben Widawsky | a3d67d2 | 2013-12-06 14:11:06 -0800 | [diff] [blame] | 927 | struct drm_device *dev = ppgtt->base.dev; |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 928 | drm_i915_private_t *dev_priv = dev->dev_private; |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 929 | struct intel_ring_buffer *ring; |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 930 | uint32_t ecochk, gab_ctl, ecobits; |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 931 | int i; |
| 932 | |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 933 | ecobits = I915_READ(GAC_ECO_BITS); |
| 934 | I915_WRITE(GAC_ECO_BITS, ecobits | ECOBITS_SNB_BIT | |
| 935 | ECOBITS_PPGTT_CACHE64B); |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 936 | |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 937 | gab_ctl = I915_READ(GAB_CTL); |
| 938 | I915_WRITE(GAB_CTL, gab_ctl | GAB_CTL_CONT_AFTER_PAGEFAULT); |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 939 | |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 940 | ecochk = I915_READ(GAM_ECOCHK); |
| 941 | I915_WRITE(GAM_ECOCHK, ecochk | ECOCHK_SNB_BIT | ECOCHK_PPGTT_CACHE64B); |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 942 | |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 943 | I915_WRITE(GFX_MODE, _MASKED_BIT_ENABLE(GFX_PPGTT_ENABLE)); |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 944 | |
| 945 | for_each_ring(ring, dev_priv, i) { |
Ben Widawsky | eeb9488 | 2013-12-06 14:11:10 -0800 | [diff] [blame] | 946 | int ret = ppgtt->switch_mm(ppgtt, ring, true); |
| 947 | if (ret) |
| 948 | return ret; |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 949 | } |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 950 | |
Ben Widawsky | b7c36d2 | 2013-04-08 18:43:56 -0700 | [diff] [blame] | 951 | return 0; |
Ben Widawsky | 6197349 | 2013-04-08 18:43:54 -0700 | [diff] [blame] | 952 | } |
| 953 | |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 954 | /* PPGTT support for Sandybdrige/Gen6 and later */ |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 955 | static void gen6_ppgtt_clear_range(struct i915_address_space *vm, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 956 | uint64_t start, |
| 957 | uint64_t length, |
Ben Widawsky | 828c790 | 2013-10-16 09:21:30 -0700 | [diff] [blame] | 958 | bool use_scratch) |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 959 | { |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 960 | struct i915_hw_ppgtt *ppgtt = |
| 961 | container_of(vm, struct i915_hw_ppgtt, base); |
Ben Widawsky | e7c2b58 | 2013-04-08 18:43:48 -0700 | [diff] [blame] | 962 | gen6_gtt_pte_t *pt_vaddr, scratch_pte; |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 963 | unsigned first_entry = start >> PAGE_SHIFT; |
| 964 | unsigned num_entries = length >> PAGE_SHIFT; |
Daniel Vetter | a15326a | 2013-03-19 23:48:39 +0100 | [diff] [blame] | 965 | unsigned act_pt = first_entry / I915_PPGTT_PT_ENTRIES; |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 966 | unsigned first_pte = first_entry % I915_PPGTT_PT_ENTRIES; |
| 967 | unsigned last_pte, i; |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 968 | |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 969 | scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC, true); |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 970 | |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 971 | while (num_entries) { |
| 972 | last_pte = first_pte + num_entries; |
| 973 | if (last_pte > I915_PPGTT_PT_ENTRIES) |
| 974 | last_pte = I915_PPGTT_PT_ENTRIES; |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 975 | |
Daniel Vetter | a15326a | 2013-03-19 23:48:39 +0100 | [diff] [blame] | 976 | pt_vaddr = kmap_atomic(ppgtt->pt_pages[act_pt]); |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 977 | |
| 978 | for (i = first_pte; i < last_pte; i++) |
| 979 | pt_vaddr[i] = scratch_pte; |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 980 | |
| 981 | kunmap_atomic(pt_vaddr); |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 982 | |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 983 | num_entries -= last_pte - first_pte; |
| 984 | first_pte = 0; |
Daniel Vetter | a15326a | 2013-03-19 23:48:39 +0100 | [diff] [blame] | 985 | act_pt++; |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 986 | } |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 987 | } |
| 988 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 989 | static void gen6_ppgtt_insert_entries(struct i915_address_space *vm, |
Daniel Vetter | def886c | 2013-01-24 14:44:56 -0800 | [diff] [blame] | 990 | struct sg_table *pages, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 991 | uint64_t start, |
Daniel Vetter | def886c | 2013-01-24 14:44:56 -0800 | [diff] [blame] | 992 | enum i915_cache_level cache_level) |
| 993 | { |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 994 | struct i915_hw_ppgtt *ppgtt = |
| 995 | container_of(vm, struct i915_hw_ppgtt, base); |
Ben Widawsky | e7c2b58 | 2013-04-08 18:43:48 -0700 | [diff] [blame] | 996 | gen6_gtt_pte_t *pt_vaddr; |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 997 | unsigned first_entry = start >> PAGE_SHIFT; |
Daniel Vetter | a15326a | 2013-03-19 23:48:39 +0100 | [diff] [blame] | 998 | unsigned act_pt = first_entry / I915_PPGTT_PT_ENTRIES; |
Imre Deak | 6e995e2 | 2013-02-18 19:28:04 +0200 | [diff] [blame] | 999 | unsigned act_pte = first_entry % I915_PPGTT_PT_ENTRIES; |
| 1000 | struct sg_page_iter sg_iter; |
Daniel Vetter | def886c | 2013-01-24 14:44:56 -0800 | [diff] [blame] | 1001 | |
Chris Wilson | cc79714 | 2013-12-31 15:50:30 +0000 | [diff] [blame] | 1002 | pt_vaddr = NULL; |
Imre Deak | 6e995e2 | 2013-02-18 19:28:04 +0200 | [diff] [blame] | 1003 | for_each_sg_page(pages->sgl, &sg_iter, pages->nents, 0) { |
Chris Wilson | cc79714 | 2013-12-31 15:50:30 +0000 | [diff] [blame] | 1004 | if (pt_vaddr == NULL) |
| 1005 | pt_vaddr = kmap_atomic(ppgtt->pt_pages[act_pt]); |
Daniel Vetter | def886c | 2013-01-24 14:44:56 -0800 | [diff] [blame] | 1006 | |
Chris Wilson | cc79714 | 2013-12-31 15:50:30 +0000 | [diff] [blame] | 1007 | pt_vaddr[act_pte] = |
| 1008 | vm->pte_encode(sg_page_iter_dma_address(&sg_iter), |
| 1009 | cache_level, true); |
Imre Deak | 6e995e2 | 2013-02-18 19:28:04 +0200 | [diff] [blame] | 1010 | if (++act_pte == I915_PPGTT_PT_ENTRIES) { |
| 1011 | kunmap_atomic(pt_vaddr); |
Chris Wilson | cc79714 | 2013-12-31 15:50:30 +0000 | [diff] [blame] | 1012 | pt_vaddr = NULL; |
Daniel Vetter | a15326a | 2013-03-19 23:48:39 +0100 | [diff] [blame] | 1013 | act_pt++; |
Imre Deak | 6e995e2 | 2013-02-18 19:28:04 +0200 | [diff] [blame] | 1014 | act_pte = 0; |
Daniel Vetter | def886c | 2013-01-24 14:44:56 -0800 | [diff] [blame] | 1015 | } |
Daniel Vetter | def886c | 2013-01-24 14:44:56 -0800 | [diff] [blame] | 1016 | } |
Chris Wilson | cc79714 | 2013-12-31 15:50:30 +0000 | [diff] [blame] | 1017 | if (pt_vaddr) |
| 1018 | kunmap_atomic(pt_vaddr); |
Daniel Vetter | def886c | 2013-01-24 14:44:56 -0800 | [diff] [blame] | 1019 | } |
| 1020 | |
Ben Widawsky | a00d825 | 2014-02-19 22:05:48 -0800 | [diff] [blame] | 1021 | static void gen6_ppgtt_unmap_pages(struct i915_hw_ppgtt *ppgtt) |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1022 | { |
Daniel Vetter | 3440d26 | 2013-01-24 13:49:56 -0800 | [diff] [blame] | 1023 | int i; |
| 1024 | |
| 1025 | if (ppgtt->pt_dma_addr) { |
| 1026 | for (i = 0; i < ppgtt->num_pd_entries; i++) |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1027 | pci_unmap_page(ppgtt->base.dev->pdev, |
Daniel Vetter | 3440d26 | 2013-01-24 13:49:56 -0800 | [diff] [blame] | 1028 | ppgtt->pt_dma_addr[i], |
| 1029 | 4096, PCI_DMA_BIDIRECTIONAL); |
| 1030 | } |
Ben Widawsky | a00d825 | 2014-02-19 22:05:48 -0800 | [diff] [blame] | 1031 | } |
| 1032 | |
| 1033 | static void gen6_ppgtt_free(struct i915_hw_ppgtt *ppgtt) |
| 1034 | { |
| 1035 | int i; |
Daniel Vetter | 3440d26 | 2013-01-24 13:49:56 -0800 | [diff] [blame] | 1036 | |
| 1037 | kfree(ppgtt->pt_dma_addr); |
| 1038 | for (i = 0; i < ppgtt->num_pd_entries; i++) |
| 1039 | __free_page(ppgtt->pt_pages[i]); |
| 1040 | kfree(ppgtt->pt_pages); |
Daniel Vetter | 3440d26 | 2013-01-24 13:49:56 -0800 | [diff] [blame] | 1041 | } |
| 1042 | |
Ben Widawsky | a00d825 | 2014-02-19 22:05:48 -0800 | [diff] [blame] | 1043 | static void gen6_ppgtt_cleanup(struct i915_address_space *vm) |
| 1044 | { |
| 1045 | struct i915_hw_ppgtt *ppgtt = |
| 1046 | container_of(vm, struct i915_hw_ppgtt, base); |
| 1047 | |
| 1048 | list_del(&vm->global_link); |
| 1049 | drm_mm_takedown(&ppgtt->base.mm); |
| 1050 | drm_mm_remove_node(&ppgtt->node); |
| 1051 | |
| 1052 | gen6_ppgtt_unmap_pages(ppgtt); |
| 1053 | gen6_ppgtt_free(ppgtt); |
| 1054 | } |
| 1055 | |
Ben Widawsky | b146520 | 2014-02-19 22:05:49 -0800 | [diff] [blame] | 1056 | static int gen6_ppgtt_allocate_page_directories(struct i915_hw_ppgtt *ppgtt) |
Daniel Vetter | 3440d26 | 2013-01-24 13:49:56 -0800 | [diff] [blame] | 1057 | { |
Ben Widawsky | c8d4c0d | 2013-12-06 14:11:07 -0800 | [diff] [blame] | 1058 | #define GEN6_PD_ALIGN (PAGE_SIZE * 16) |
| 1059 | #define GEN6_PD_SIZE (GEN6_PPGTT_PD_ENTRIES * PAGE_SIZE) |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1060 | struct drm_device *dev = ppgtt->base.dev; |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1061 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | e3cc199 | 2013-12-06 14:11:08 -0800 | [diff] [blame] | 1062 | bool retried = false; |
Ben Widawsky | b146520 | 2014-02-19 22:05:49 -0800 | [diff] [blame] | 1063 | int ret; |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1064 | |
Ben Widawsky | c8d4c0d | 2013-12-06 14:11:07 -0800 | [diff] [blame] | 1065 | /* PPGTT PDEs reside in the GGTT and consists of 512 entries. The |
| 1066 | * allocator works in address space sizes, so it's multiplied by page |
| 1067 | * size. We allocate at the top of the GTT to avoid fragmentation. |
| 1068 | */ |
| 1069 | BUG_ON(!drm_mm_initialized(&dev_priv->gtt.base.mm)); |
Ben Widawsky | e3cc199 | 2013-12-06 14:11:08 -0800 | [diff] [blame] | 1070 | alloc: |
Ben Widawsky | c8d4c0d | 2013-12-06 14:11:07 -0800 | [diff] [blame] | 1071 | ret = drm_mm_insert_node_in_range_generic(&dev_priv->gtt.base.mm, |
| 1072 | &ppgtt->node, GEN6_PD_SIZE, |
| 1073 | GEN6_PD_ALIGN, 0, |
| 1074 | 0, dev_priv->gtt.base.total, |
| 1075 | DRM_MM_SEARCH_DEFAULT); |
Ben Widawsky | e3cc199 | 2013-12-06 14:11:08 -0800 | [diff] [blame] | 1076 | if (ret == -ENOSPC && !retried) { |
| 1077 | ret = i915_gem_evict_something(dev, &dev_priv->gtt.base, |
| 1078 | GEN6_PD_SIZE, GEN6_PD_ALIGN, |
Daniel Vetter | d47c3ea | 2014-02-14 14:01:18 +0100 | [diff] [blame] | 1079 | I915_CACHE_NONE, 0); |
Ben Widawsky | e3cc199 | 2013-12-06 14:11:08 -0800 | [diff] [blame] | 1080 | if (ret) |
| 1081 | return ret; |
| 1082 | |
| 1083 | retried = true; |
| 1084 | goto alloc; |
| 1085 | } |
Ben Widawsky | c8d4c0d | 2013-12-06 14:11:07 -0800 | [diff] [blame] | 1086 | |
| 1087 | if (ppgtt->node.start < dev_priv->gtt.mappable_end) |
| 1088 | DRM_DEBUG("Forced to use aperture for PDEs\n"); |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1089 | |
Ben Widawsky | 6670a5a | 2013-06-27 16:30:04 -0700 | [diff] [blame] | 1090 | ppgtt->num_pd_entries = GEN6_PPGTT_PD_ENTRIES; |
Ben Widawsky | b146520 | 2014-02-19 22:05:49 -0800 | [diff] [blame] | 1091 | return ret; |
| 1092 | } |
| 1093 | |
| 1094 | static int gen6_ppgtt_allocate_page_tables(struct i915_hw_ppgtt *ppgtt) |
| 1095 | { |
| 1096 | int i; |
| 1097 | |
| 1098 | ppgtt->pt_pages = kcalloc(ppgtt->num_pd_entries, sizeof(struct page *), |
| 1099 | GFP_KERNEL); |
| 1100 | |
| 1101 | if (!ppgtt->pt_pages) |
| 1102 | return -ENOMEM; |
| 1103 | |
| 1104 | for (i = 0; i < ppgtt->num_pd_entries; i++) { |
| 1105 | ppgtt->pt_pages[i] = alloc_page(GFP_KERNEL); |
| 1106 | if (!ppgtt->pt_pages[i]) { |
| 1107 | gen6_ppgtt_free(ppgtt); |
| 1108 | return -ENOMEM; |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | return 0; |
| 1113 | } |
| 1114 | |
| 1115 | static int gen6_ppgtt_alloc(struct i915_hw_ppgtt *ppgtt) |
| 1116 | { |
| 1117 | int ret; |
| 1118 | |
| 1119 | ret = gen6_ppgtt_allocate_page_directories(ppgtt); |
| 1120 | if (ret) |
| 1121 | return ret; |
| 1122 | |
| 1123 | ret = gen6_ppgtt_allocate_page_tables(ppgtt); |
| 1124 | if (ret) { |
| 1125 | drm_mm_remove_node(&ppgtt->node); |
| 1126 | return ret; |
| 1127 | } |
| 1128 | |
| 1129 | ppgtt->pt_dma_addr = kcalloc(ppgtt->num_pd_entries, sizeof(dma_addr_t), |
| 1130 | GFP_KERNEL); |
| 1131 | if (!ppgtt->pt_dma_addr) { |
| 1132 | drm_mm_remove_node(&ppgtt->node); |
| 1133 | gen6_ppgtt_free(ppgtt); |
| 1134 | return -ENOMEM; |
| 1135 | } |
| 1136 | |
| 1137 | return 0; |
| 1138 | } |
| 1139 | |
| 1140 | static int gen6_ppgtt_setup_page_tables(struct i915_hw_ppgtt *ppgtt) |
| 1141 | { |
| 1142 | struct drm_device *dev = ppgtt->base.dev; |
| 1143 | int i; |
| 1144 | |
| 1145 | for (i = 0; i < ppgtt->num_pd_entries; i++) { |
| 1146 | dma_addr_t pt_addr; |
| 1147 | |
| 1148 | pt_addr = pci_map_page(dev->pdev, ppgtt->pt_pages[i], 0, 4096, |
| 1149 | PCI_DMA_BIDIRECTIONAL); |
| 1150 | |
| 1151 | if (pci_dma_mapping_error(dev->pdev, pt_addr)) { |
| 1152 | gen6_ppgtt_unmap_pages(ppgtt); |
| 1153 | return -EIO; |
| 1154 | } |
| 1155 | |
| 1156 | ppgtt->pt_dma_addr[i] = pt_addr; |
| 1157 | } |
| 1158 | |
| 1159 | return 0; |
| 1160 | } |
| 1161 | |
| 1162 | static int gen6_ppgtt_init(struct i915_hw_ppgtt *ppgtt) |
| 1163 | { |
| 1164 | struct drm_device *dev = ppgtt->base.dev; |
| 1165 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1166 | int ret; |
| 1167 | |
| 1168 | ppgtt->base.pte_encode = dev_priv->gtt.base.pte_encode; |
Ben Widawsky | 48a1038 | 2013-12-06 14:11:11 -0800 | [diff] [blame] | 1169 | if (IS_GEN6(dev)) { |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 1170 | ppgtt->enable = gen6_ppgtt_enable; |
Ben Widawsky | 48a1038 | 2013-12-06 14:11:11 -0800 | [diff] [blame] | 1171 | ppgtt->switch_mm = gen6_mm_switch; |
Ben Widawsky | 90252e5 | 2013-12-06 14:11:12 -0800 | [diff] [blame] | 1172 | } else if (IS_HASWELL(dev)) { |
| 1173 | ppgtt->enable = gen7_ppgtt_enable; |
| 1174 | ppgtt->switch_mm = hsw_mm_switch; |
Ben Widawsky | 48a1038 | 2013-12-06 14:11:11 -0800 | [diff] [blame] | 1175 | } else if (IS_GEN7(dev)) { |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 1176 | ppgtt->enable = gen7_ppgtt_enable; |
Ben Widawsky | 48a1038 | 2013-12-06 14:11:11 -0800 | [diff] [blame] | 1177 | ppgtt->switch_mm = gen7_mm_switch; |
| 1178 | } else |
Ben Widawsky | b4a74e3 | 2013-12-06 14:11:09 -0800 | [diff] [blame] | 1179 | BUG(); |
Ben Widawsky | b146520 | 2014-02-19 22:05:49 -0800 | [diff] [blame] | 1180 | |
| 1181 | ret = gen6_ppgtt_alloc(ppgtt); |
| 1182 | if (ret) |
| 1183 | return ret; |
| 1184 | |
| 1185 | ret = gen6_ppgtt_setup_page_tables(ppgtt); |
| 1186 | if (ret) { |
| 1187 | gen6_ppgtt_free(ppgtt); |
| 1188 | return ret; |
| 1189 | } |
| 1190 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1191 | ppgtt->base.clear_range = gen6_ppgtt_clear_range; |
| 1192 | ppgtt->base.insert_entries = gen6_ppgtt_insert_entries; |
| 1193 | ppgtt->base.cleanup = gen6_ppgtt_cleanup; |
Ben Widawsky | 686e1f6f | 2013-11-25 09:54:34 -0800 | [diff] [blame] | 1194 | ppgtt->base.start = 0; |
Ben Widawsky | 5a6c93f | 2014-03-08 11:58:17 -0800 | [diff] [blame^] | 1195 | ppgtt->base.total = ppgtt->num_pd_entries * I915_PPGTT_PT_ENTRIES * PAGE_SIZE; |
Ben Widawsky | b146520 | 2014-02-19 22:05:49 -0800 | [diff] [blame] | 1196 | ppgtt->debug_dump = gen6_dump_ppgtt; |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1197 | |
Ben Widawsky | b146520 | 2014-02-19 22:05:49 -0800 | [diff] [blame] | 1198 | ppgtt->pd_offset = |
| 1199 | ppgtt->node.start / PAGE_SIZE * sizeof(gen6_gtt_pte_t); |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1200 | |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1201 | ppgtt->base.clear_range(&ppgtt->base, 0, ppgtt->base.total, true); |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1202 | |
Ben Widawsky | c8d4c0d | 2013-12-06 14:11:07 -0800 | [diff] [blame] | 1203 | DRM_DEBUG_DRIVER("Allocated pde space (%ldM) at GTT entry: %lx\n", |
| 1204 | ppgtt->node.size >> 20, |
| 1205 | ppgtt->node.start / PAGE_SIZE); |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1206 | |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1207 | return 0; |
Daniel Vetter | 3440d26 | 2013-01-24 13:49:56 -0800 | [diff] [blame] | 1208 | } |
| 1209 | |
Ben Widawsky | 246cbfb | 2013-12-06 14:11:14 -0800 | [diff] [blame] | 1210 | int i915_gem_init_ppgtt(struct drm_device *dev, struct i915_hw_ppgtt *ppgtt) |
Daniel Vetter | 3440d26 | 2013-01-24 13:49:56 -0800 | [diff] [blame] | 1211 | { |
| 1212 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | d6660ad | 2013-12-06 14:11:13 -0800 | [diff] [blame] | 1213 | int ret = 0; |
Daniel Vetter | 3440d26 | 2013-01-24 13:49:56 -0800 | [diff] [blame] | 1214 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1215 | ppgtt->base.dev = dev; |
Ben Widawsky | 8407bb9 | 2014-03-08 11:58:16 -0800 | [diff] [blame] | 1216 | ppgtt->base.scratch = dev_priv->gtt.base.scratch; |
Daniel Vetter | 3440d26 | 2013-01-24 13:49:56 -0800 | [diff] [blame] | 1217 | |
Ben Widawsky | 3ed124b | 2013-04-08 18:43:53 -0700 | [diff] [blame] | 1218 | if (INTEL_INFO(dev)->gen < 8) |
| 1219 | ret = gen6_ppgtt_init(ppgtt); |
Daniel Vetter | 8fe6bd2 | 2013-11-02 21:07:01 -0700 | [diff] [blame] | 1220 | else if (IS_GEN8(dev)) |
Ben Widawsky | 37aca44 | 2013-11-04 20:47:32 -0800 | [diff] [blame] | 1221 | ret = gen8_ppgtt_init(ppgtt, dev_priv->gtt.base.total); |
Ben Widawsky | 3ed124b | 2013-04-08 18:43:53 -0700 | [diff] [blame] | 1222 | else |
| 1223 | BUG(); |
| 1224 | |
Ben Widawsky | c7c48df | 2013-12-06 14:11:15 -0800 | [diff] [blame] | 1225 | if (!ret) { |
Ben Widawsky | 7e0d96b | 2013-12-06 14:11:26 -0800 | [diff] [blame] | 1226 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | c7c48df | 2013-12-06 14:11:15 -0800 | [diff] [blame] | 1227 | kref_init(&ppgtt->ref); |
Ben Widawsky | 93bd864 | 2013-07-16 16:50:06 -0700 | [diff] [blame] | 1228 | drm_mm_init(&ppgtt->base.mm, ppgtt->base.start, |
| 1229 | ppgtt->base.total); |
Ben Widawsky | 7e0d96b | 2013-12-06 14:11:26 -0800 | [diff] [blame] | 1230 | i915_init_vm(dev_priv, &ppgtt->base); |
| 1231 | if (INTEL_INFO(dev)->gen < 8) { |
Ben Widawsky | 9f273d4 | 2013-12-06 14:11:16 -0800 | [diff] [blame] | 1232 | gen6_write_pdes(ppgtt); |
Ben Widawsky | 7e0d96b | 2013-12-06 14:11:26 -0800 | [diff] [blame] | 1233 | DRM_DEBUG("Adding PPGTT at offset %x\n", |
| 1234 | ppgtt->pd_offset << 10); |
| 1235 | } |
Ben Widawsky | 93bd864 | 2013-07-16 16:50:06 -0700 | [diff] [blame] | 1236 | } |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1237 | |
| 1238 | return ret; |
| 1239 | } |
| 1240 | |
Ben Widawsky | 7e0d96b | 2013-12-06 14:11:26 -0800 | [diff] [blame] | 1241 | static void |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1242 | ppgtt_bind_vma(struct i915_vma *vma, |
| 1243 | enum i915_cache_level cache_level, |
| 1244 | u32 flags) |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1245 | { |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1246 | WARN_ON(flags); |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1247 | |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1248 | vma->vm->insert_entries(vma->vm, vma->obj->pages, vma->node.start, |
| 1249 | cache_level); |
Daniel Vetter | 1d2a314 | 2012-02-09 17:15:46 +0100 | [diff] [blame] | 1250 | } |
| 1251 | |
Ben Widawsky | 7e0d96b | 2013-12-06 14:11:26 -0800 | [diff] [blame] | 1252 | static void ppgtt_unbind_vma(struct i915_vma *vma) |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 1253 | { |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1254 | vma->vm->clear_range(vma->vm, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1255 | vma->node.start, |
| 1256 | vma->obj->base.size, |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1257 | true); |
Daniel Vetter | 7bddb01 | 2012-02-09 17:15:47 +0100 | [diff] [blame] | 1258 | } |
| 1259 | |
Ben Widawsky | a81cc00 | 2013-01-18 12:30:31 -0800 | [diff] [blame] | 1260 | extern int intel_iommu_gfx_mapped; |
| 1261 | /* Certain Gen5 chipsets require require idling the GPU before |
| 1262 | * unmapping anything from the GTT when VT-d is enabled. |
| 1263 | */ |
| 1264 | static inline bool needs_idle_maps(struct drm_device *dev) |
| 1265 | { |
| 1266 | #ifdef CONFIG_INTEL_IOMMU |
| 1267 | /* Query intel_iommu to see if we need the workaround. Presumably that |
| 1268 | * was loaded first. |
| 1269 | */ |
| 1270 | if (IS_GEN5(dev) && IS_MOBILE(dev) && intel_iommu_gfx_mapped) |
| 1271 | return true; |
| 1272 | #endif |
| 1273 | return false; |
| 1274 | } |
| 1275 | |
Ben Widawsky | 5c04228 | 2011-10-17 15:51:55 -0700 | [diff] [blame] | 1276 | static bool do_idling(struct drm_i915_private *dev_priv) |
| 1277 | { |
| 1278 | bool ret = dev_priv->mm.interruptible; |
| 1279 | |
Ben Widawsky | a81cc00 | 2013-01-18 12:30:31 -0800 | [diff] [blame] | 1280 | if (unlikely(dev_priv->gtt.do_idle_maps)) { |
Ben Widawsky | 5c04228 | 2011-10-17 15:51:55 -0700 | [diff] [blame] | 1281 | dev_priv->mm.interruptible = false; |
Ben Widawsky | b2da9fe | 2012-04-26 16:02:58 -0700 | [diff] [blame] | 1282 | if (i915_gpu_idle(dev_priv->dev)) { |
Ben Widawsky | 5c04228 | 2011-10-17 15:51:55 -0700 | [diff] [blame] | 1283 | DRM_ERROR("Couldn't idle GPU\n"); |
| 1284 | /* Wait a bit, in hopes it avoids the hang */ |
| 1285 | udelay(10); |
| 1286 | } |
| 1287 | } |
| 1288 | |
| 1289 | return ret; |
| 1290 | } |
| 1291 | |
| 1292 | static void undo_idling(struct drm_i915_private *dev_priv, bool interruptible) |
| 1293 | { |
Ben Widawsky | a81cc00 | 2013-01-18 12:30:31 -0800 | [diff] [blame] | 1294 | if (unlikely(dev_priv->gtt.do_idle_maps)) |
Ben Widawsky | 5c04228 | 2011-10-17 15:51:55 -0700 | [diff] [blame] | 1295 | dev_priv->mm.interruptible = interruptible; |
| 1296 | } |
| 1297 | |
Ben Widawsky | 828c790 | 2013-10-16 09:21:30 -0700 | [diff] [blame] | 1298 | void i915_check_and_clear_faults(struct drm_device *dev) |
| 1299 | { |
| 1300 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1301 | struct intel_ring_buffer *ring; |
| 1302 | int i; |
| 1303 | |
| 1304 | if (INTEL_INFO(dev)->gen < 6) |
| 1305 | return; |
| 1306 | |
| 1307 | for_each_ring(ring, dev_priv, i) { |
| 1308 | u32 fault_reg; |
| 1309 | fault_reg = I915_READ(RING_FAULT_REG(ring)); |
| 1310 | if (fault_reg & RING_FAULT_VALID) { |
| 1311 | DRM_DEBUG_DRIVER("Unexpected fault\n" |
| 1312 | "\tAddr: 0x%08lx\\n" |
| 1313 | "\tAddress space: %s\n" |
| 1314 | "\tSource ID: %d\n" |
| 1315 | "\tType: %d\n", |
| 1316 | fault_reg & PAGE_MASK, |
| 1317 | fault_reg & RING_FAULT_GTTSEL_MASK ? "GGTT" : "PPGTT", |
| 1318 | RING_FAULT_SRCID(fault_reg), |
| 1319 | RING_FAULT_FAULT_TYPE(fault_reg)); |
| 1320 | I915_WRITE(RING_FAULT_REG(ring), |
| 1321 | fault_reg & ~RING_FAULT_VALID); |
| 1322 | } |
| 1323 | } |
| 1324 | POSTING_READ(RING_FAULT_REG(&dev_priv->ring[RCS])); |
| 1325 | } |
| 1326 | |
| 1327 | void i915_gem_suspend_gtt_mappings(struct drm_device *dev) |
| 1328 | { |
| 1329 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1330 | |
| 1331 | /* Don't bother messing with faults pre GEN6 as we have little |
| 1332 | * documentation supporting that it's a good idea. |
| 1333 | */ |
| 1334 | if (INTEL_INFO(dev)->gen < 6) |
| 1335 | return; |
| 1336 | |
| 1337 | i915_check_and_clear_faults(dev); |
| 1338 | |
| 1339 | dev_priv->gtt.base.clear_range(&dev_priv->gtt.base, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1340 | dev_priv->gtt.base.start, |
| 1341 | dev_priv->gtt.base.total, |
Ben Widawsky | 828c790 | 2013-10-16 09:21:30 -0700 | [diff] [blame] | 1342 | false); |
| 1343 | } |
| 1344 | |
Daniel Vetter | 76aaf22 | 2010-11-05 22:23:30 +0100 | [diff] [blame] | 1345 | void i915_gem_restore_gtt_mappings(struct drm_device *dev) |
| 1346 | { |
| 1347 | struct drm_i915_private *dev_priv = dev->dev_private; |
Chris Wilson | 05394f3 | 2010-11-08 19:18:58 +0000 | [diff] [blame] | 1348 | struct drm_i915_gem_object *obj; |
Ben Widawsky | 80da216 | 2013-12-06 14:11:17 -0800 | [diff] [blame] | 1349 | struct i915_address_space *vm; |
Daniel Vetter | 76aaf22 | 2010-11-05 22:23:30 +0100 | [diff] [blame] | 1350 | |
Ben Widawsky | 828c790 | 2013-10-16 09:21:30 -0700 | [diff] [blame] | 1351 | i915_check_and_clear_faults(dev); |
| 1352 | |
Chris Wilson | bee4a18 | 2011-01-21 10:54:32 +0000 | [diff] [blame] | 1353 | /* First fill our portion of the GTT with scratch pages */ |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1354 | dev_priv->gtt.base.clear_range(&dev_priv->gtt.base, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1355 | dev_priv->gtt.base.start, |
| 1356 | dev_priv->gtt.base.total, |
Ben Widawsky | 828c790 | 2013-10-16 09:21:30 -0700 | [diff] [blame] | 1357 | true); |
Chris Wilson | bee4a18 | 2011-01-21 10:54:32 +0000 | [diff] [blame] | 1358 | |
Ben Widawsky | 35c20a6 | 2013-05-31 11:28:48 -0700 | [diff] [blame] | 1359 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1360 | struct i915_vma *vma = i915_gem_obj_to_vma(obj, |
| 1361 | &dev_priv->gtt.base); |
| 1362 | if (!vma) |
| 1363 | continue; |
| 1364 | |
Chris Wilson | 2c22569 | 2013-08-09 12:26:45 +0100 | [diff] [blame] | 1365 | i915_gem_clflush_object(obj, obj->pin_display); |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1366 | /* The bind_vma code tries to be smart about tracking mappings. |
| 1367 | * Unfortunately above, we've just wiped out the mappings |
| 1368 | * without telling our object about it. So we need to fake it. |
| 1369 | */ |
| 1370 | obj->has_global_gtt_mapping = 0; |
| 1371 | vma->bind_vma(vma, obj->cache_level, GLOBAL_BIND); |
Daniel Vetter | 76aaf22 | 2010-11-05 22:23:30 +0100 | [diff] [blame] | 1372 | } |
| 1373 | |
Ben Widawsky | 80da216 | 2013-12-06 14:11:17 -0800 | [diff] [blame] | 1374 | |
| 1375 | if (INTEL_INFO(dev)->gen >= 8) |
| 1376 | return; |
| 1377 | |
| 1378 | list_for_each_entry(vm, &dev_priv->vm_list, global_link) { |
| 1379 | /* TODO: Perhaps it shouldn't be gen6 specific */ |
| 1380 | if (i915_is_ggtt(vm)) { |
| 1381 | if (dev_priv->mm.aliasing_ppgtt) |
| 1382 | gen6_write_pdes(dev_priv->mm.aliasing_ppgtt); |
| 1383 | continue; |
| 1384 | } |
| 1385 | |
| 1386 | gen6_write_pdes(container_of(vm, struct i915_hw_ppgtt, base)); |
Daniel Vetter | 76aaf22 | 2010-11-05 22:23:30 +0100 | [diff] [blame] | 1387 | } |
| 1388 | |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1389 | i915_gem_chipset_flush(dev); |
Daniel Vetter | 76aaf22 | 2010-11-05 22:23:30 +0100 | [diff] [blame] | 1390 | } |
Daniel Vetter | 7c2e6fd | 2010-11-06 10:10:47 +0100 | [diff] [blame] | 1391 | |
Daniel Vetter | 7416390 | 2012-02-15 23:50:21 +0100 | [diff] [blame] | 1392 | int i915_gem_gtt_prepare_object(struct drm_i915_gem_object *obj) |
Daniel Vetter | 7c2e6fd | 2010-11-06 10:10:47 +0100 | [diff] [blame] | 1393 | { |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1394 | if (obj->has_dma_mapping) |
Daniel Vetter | 7416390 | 2012-02-15 23:50:21 +0100 | [diff] [blame] | 1395 | return 0; |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1396 | |
| 1397 | if (!dma_map_sg(&obj->base.dev->pdev->dev, |
| 1398 | obj->pages->sgl, obj->pages->nents, |
| 1399 | PCI_DMA_BIDIRECTIONAL)) |
| 1400 | return -ENOSPC; |
| 1401 | |
| 1402 | return 0; |
Daniel Vetter | 7c2e6fd | 2010-11-06 10:10:47 +0100 | [diff] [blame] | 1403 | } |
| 1404 | |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 1405 | static inline void gen8_set_pte(void __iomem *addr, gen8_gtt_pte_t pte) |
| 1406 | { |
| 1407 | #ifdef writeq |
| 1408 | writeq(pte, addr); |
| 1409 | #else |
| 1410 | iowrite32((u32)pte, addr); |
| 1411 | iowrite32(pte >> 32, addr + 4); |
| 1412 | #endif |
| 1413 | } |
| 1414 | |
| 1415 | static void gen8_ggtt_insert_entries(struct i915_address_space *vm, |
| 1416 | struct sg_table *st, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1417 | uint64_t start, |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 1418 | enum i915_cache_level level) |
| 1419 | { |
| 1420 | struct drm_i915_private *dev_priv = vm->dev->dev_private; |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1421 | unsigned first_entry = start >> PAGE_SHIFT; |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 1422 | gen8_gtt_pte_t __iomem *gtt_entries = |
| 1423 | (gen8_gtt_pte_t __iomem *)dev_priv->gtt.gsm + first_entry; |
| 1424 | int i = 0; |
| 1425 | struct sg_page_iter sg_iter; |
| 1426 | dma_addr_t addr; |
| 1427 | |
| 1428 | for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) { |
| 1429 | addr = sg_dma_address(sg_iter.sg) + |
| 1430 | (sg_iter.sg_pgoffset << PAGE_SHIFT); |
| 1431 | gen8_set_pte(>t_entries[i], |
| 1432 | gen8_pte_encode(addr, level, true)); |
| 1433 | i++; |
| 1434 | } |
| 1435 | |
| 1436 | /* |
| 1437 | * XXX: This serves as a posting read to make sure that the PTE has |
| 1438 | * actually been updated. There is some concern that even though |
| 1439 | * registers and PTEs are within the same BAR that they are potentially |
| 1440 | * of NUMA access patterns. Therefore, even with the way we assume |
| 1441 | * hardware should work, we must keep this posting read for paranoia. |
| 1442 | */ |
| 1443 | if (i != 0) |
| 1444 | WARN_ON(readq(>t_entries[i-1]) |
| 1445 | != gen8_pte_encode(addr, level, true)); |
| 1446 | |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 1447 | /* This next bit makes the above posting read even more important. We |
| 1448 | * want to flush the TLBs only after we're certain all the PTE updates |
| 1449 | * have finished. |
| 1450 | */ |
| 1451 | I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); |
| 1452 | POSTING_READ(GFX_FLSH_CNTL_GEN6); |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 1453 | } |
| 1454 | |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1455 | /* |
| 1456 | * Binds an object into the global gtt with the specified cache level. The object |
| 1457 | * will be accessible to the GPU via commands whose operands reference offsets |
| 1458 | * within the global GTT as well as accessible by the GPU through the GMADR |
| 1459 | * mapped BAR (dev_priv->mm.gtt->gtt). |
| 1460 | */ |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1461 | static void gen6_ggtt_insert_entries(struct i915_address_space *vm, |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1462 | struct sg_table *st, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1463 | uint64_t start, |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1464 | enum i915_cache_level level) |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1465 | { |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1466 | struct drm_i915_private *dev_priv = vm->dev->dev_private; |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1467 | unsigned first_entry = start >> PAGE_SHIFT; |
Ben Widawsky | e7c2b58 | 2013-04-08 18:43:48 -0700 | [diff] [blame] | 1468 | gen6_gtt_pte_t __iomem *gtt_entries = |
| 1469 | (gen6_gtt_pte_t __iomem *)dev_priv->gtt.gsm + first_entry; |
Imre Deak | 6e995e2 | 2013-02-18 19:28:04 +0200 | [diff] [blame] | 1470 | int i = 0; |
| 1471 | struct sg_page_iter sg_iter; |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1472 | dma_addr_t addr; |
| 1473 | |
Imre Deak | 6e995e2 | 2013-02-18 19:28:04 +0200 | [diff] [blame] | 1474 | for_each_sg_page(st->sgl, &sg_iter, st->nents, 0) { |
Imre Deak | 2db76d7 | 2013-03-26 15:14:18 +0200 | [diff] [blame] | 1475 | addr = sg_page_iter_dma_address(&sg_iter); |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 1476 | iowrite32(vm->pte_encode(addr, level, true), >t_entries[i]); |
Imre Deak | 6e995e2 | 2013-02-18 19:28:04 +0200 | [diff] [blame] | 1477 | i++; |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1478 | } |
| 1479 | |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1480 | /* XXX: This serves as a posting read to make sure that the PTE has |
| 1481 | * actually been updated. There is some concern that even though |
| 1482 | * registers and PTEs are within the same BAR that they are potentially |
| 1483 | * of NUMA access patterns. Therefore, even with the way we assume |
| 1484 | * hardware should work, we must keep this posting read for paranoia. |
| 1485 | */ |
| 1486 | if (i != 0) |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1487 | WARN_ON(readl(>t_entries[i-1]) != |
Ben Widawsky | b35b380 | 2013-10-16 09:18:21 -0700 | [diff] [blame] | 1488 | vm->pte_encode(addr, level, true)); |
Ben Widawsky | 0f9b91c | 2012-11-04 09:21:30 -0800 | [diff] [blame] | 1489 | |
| 1490 | /* This next bit makes the above posting read even more important. We |
| 1491 | * want to flush the TLBs only after we're certain all the PTE updates |
| 1492 | * have finished. |
| 1493 | */ |
| 1494 | I915_WRITE(GFX_FLSH_CNTL_GEN6, GFX_FLSH_CNTL_EN); |
| 1495 | POSTING_READ(GFX_FLSH_CNTL_GEN6); |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1496 | } |
| 1497 | |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 1498 | static void gen8_ggtt_clear_range(struct i915_address_space *vm, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1499 | uint64_t start, |
| 1500 | uint64_t length, |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 1501 | bool use_scratch) |
| 1502 | { |
| 1503 | struct drm_i915_private *dev_priv = vm->dev->dev_private; |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1504 | unsigned first_entry = start >> PAGE_SHIFT; |
| 1505 | unsigned num_entries = length >> PAGE_SHIFT; |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 1506 | gen8_gtt_pte_t scratch_pte, __iomem *gtt_base = |
| 1507 | (gen8_gtt_pte_t __iomem *) dev_priv->gtt.gsm + first_entry; |
| 1508 | const int max_entries = gtt_total_entries(dev_priv->gtt) - first_entry; |
| 1509 | int i; |
| 1510 | |
| 1511 | if (WARN(num_entries > max_entries, |
| 1512 | "First entry = %d; Num entries = %d (max=%d)\n", |
| 1513 | first_entry, num_entries, max_entries)) |
| 1514 | num_entries = max_entries; |
| 1515 | |
| 1516 | scratch_pte = gen8_pte_encode(vm->scratch.addr, |
| 1517 | I915_CACHE_LLC, |
| 1518 | use_scratch); |
| 1519 | for (i = 0; i < num_entries; i++) |
| 1520 | gen8_set_pte(>t_base[i], scratch_pte); |
| 1521 | readl(gtt_base); |
| 1522 | } |
| 1523 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1524 | static void gen6_ggtt_clear_range(struct i915_address_space *vm, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1525 | uint64_t start, |
| 1526 | uint64_t length, |
Ben Widawsky | 828c790 | 2013-10-16 09:21:30 -0700 | [diff] [blame] | 1527 | bool use_scratch) |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1528 | { |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1529 | struct drm_i915_private *dev_priv = vm->dev->dev_private; |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1530 | unsigned first_entry = start >> PAGE_SHIFT; |
| 1531 | unsigned num_entries = length >> PAGE_SHIFT; |
Ben Widawsky | e7c2b58 | 2013-04-08 18:43:48 -0700 | [diff] [blame] | 1532 | gen6_gtt_pte_t scratch_pte, __iomem *gtt_base = |
| 1533 | (gen6_gtt_pte_t __iomem *) dev_priv->gtt.gsm + first_entry; |
Ben Widawsky | a54c0c2 | 2013-01-24 14:45:00 -0800 | [diff] [blame] | 1534 | const int max_entries = gtt_total_entries(dev_priv->gtt) - first_entry; |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1535 | int i; |
| 1536 | |
| 1537 | if (WARN(num_entries > max_entries, |
| 1538 | "First entry = %d; Num entries = %d (max=%d)\n", |
| 1539 | first_entry, num_entries, max_entries)) |
| 1540 | num_entries = max_entries; |
| 1541 | |
Ben Widawsky | 828c790 | 2013-10-16 09:21:30 -0700 | [diff] [blame] | 1542 | scratch_pte = vm->pte_encode(vm->scratch.addr, I915_CACHE_LLC, use_scratch); |
| 1543 | |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1544 | for (i = 0; i < num_entries; i++) |
| 1545 | iowrite32(scratch_pte, >t_base[i]); |
| 1546 | readl(gtt_base); |
| 1547 | } |
| 1548 | |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1549 | |
| 1550 | static void i915_ggtt_bind_vma(struct i915_vma *vma, |
| 1551 | enum i915_cache_level cache_level, |
| 1552 | u32 unused) |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1553 | { |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1554 | const unsigned long entry = vma->node.start >> PAGE_SHIFT; |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1555 | unsigned int flags = (cache_level == I915_CACHE_NONE) ? |
| 1556 | AGP_USER_MEMORY : AGP_USER_CACHED_MEMORY; |
| 1557 | |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1558 | BUG_ON(!i915_is_ggtt(vma->vm)); |
| 1559 | intel_gtt_insert_sg_entries(vma->obj->pages, entry, flags); |
| 1560 | vma->obj->has_global_gtt_mapping = 1; |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1561 | } |
| 1562 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1563 | static void i915_ggtt_clear_range(struct i915_address_space *vm, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1564 | uint64_t start, |
| 1565 | uint64_t length, |
Ben Widawsky | 828c790 | 2013-10-16 09:21:30 -0700 | [diff] [blame] | 1566 | bool unused) |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1567 | { |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1568 | unsigned first_entry = start >> PAGE_SHIFT; |
| 1569 | unsigned num_entries = length >> PAGE_SHIFT; |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1570 | intel_gtt_clear_range(first_entry, num_entries); |
| 1571 | } |
| 1572 | |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1573 | static void i915_ggtt_unbind_vma(struct i915_vma *vma) |
Chris Wilson | d5bd144 | 2011-04-14 06:48:26 +0100 | [diff] [blame] | 1574 | { |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1575 | const unsigned int first = vma->node.start >> PAGE_SHIFT; |
| 1576 | const unsigned int size = vma->obj->base.size >> PAGE_SHIFT; |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1577 | |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1578 | BUG_ON(!i915_is_ggtt(vma->vm)); |
| 1579 | vma->obj->has_global_gtt_mapping = 0; |
| 1580 | intel_gtt_clear_range(first, size); |
Chris Wilson | d5bd144 | 2011-04-14 06:48:26 +0100 | [diff] [blame] | 1581 | } |
| 1582 | |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1583 | static void ggtt_bind_vma(struct i915_vma *vma, |
| 1584 | enum i915_cache_level cache_level, |
| 1585 | u32 flags) |
Daniel Vetter | 7c2e6fd | 2010-11-06 10:10:47 +0100 | [diff] [blame] | 1586 | { |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1587 | struct drm_device *dev = vma->vm->dev; |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1588 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1589 | struct drm_i915_gem_object *obj = vma->obj; |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 1590 | |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1591 | /* If there is no aliasing PPGTT, or the caller needs a global mapping, |
| 1592 | * or we have a global mapping already but the cacheability flags have |
| 1593 | * changed, set the global PTEs. |
| 1594 | * |
| 1595 | * If there is an aliasing PPGTT it is anecdotally faster, so use that |
| 1596 | * instead if none of the above hold true. |
| 1597 | * |
| 1598 | * NB: A global mapping should only be needed for special regions like |
| 1599 | * "gtt mappable", SNB errata, or if specified via special execbuf |
| 1600 | * flags. At all other times, the GPU will use the aliasing PPGTT. |
| 1601 | */ |
| 1602 | if (!dev_priv->mm.aliasing_ppgtt || flags & GLOBAL_BIND) { |
| 1603 | if (!obj->has_global_gtt_mapping || |
| 1604 | (cache_level != obj->cache_level)) { |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1605 | vma->vm->insert_entries(vma->vm, obj->pages, |
| 1606 | vma->node.start, |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1607 | cache_level); |
| 1608 | obj->has_global_gtt_mapping = 1; |
| 1609 | } |
| 1610 | } |
Daniel Vetter | 74898d7 | 2012-02-15 23:50:22 +0100 | [diff] [blame] | 1611 | |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1612 | if (dev_priv->mm.aliasing_ppgtt && |
| 1613 | (!obj->has_aliasing_ppgtt_mapping || |
| 1614 | (cache_level != obj->cache_level))) { |
| 1615 | struct i915_hw_ppgtt *appgtt = dev_priv->mm.aliasing_ppgtt; |
| 1616 | appgtt->base.insert_entries(&appgtt->base, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1617 | vma->obj->pages, |
| 1618 | vma->node.start, |
| 1619 | cache_level); |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1620 | vma->obj->has_aliasing_ppgtt_mapping = 1; |
| 1621 | } |
| 1622 | } |
| 1623 | |
| 1624 | static void ggtt_unbind_vma(struct i915_vma *vma) |
| 1625 | { |
| 1626 | struct drm_device *dev = vma->vm->dev; |
| 1627 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1628 | struct drm_i915_gem_object *obj = vma->obj; |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1629 | |
| 1630 | if (obj->has_global_gtt_mapping) { |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1631 | vma->vm->clear_range(vma->vm, |
| 1632 | vma->node.start, |
| 1633 | obj->base.size, |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1634 | true); |
| 1635 | obj->has_global_gtt_mapping = 0; |
| 1636 | } |
| 1637 | |
| 1638 | if (obj->has_aliasing_ppgtt_mapping) { |
| 1639 | struct i915_hw_ppgtt *appgtt = dev_priv->mm.aliasing_ppgtt; |
| 1640 | appgtt->base.clear_range(&appgtt->base, |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1641 | vma->node.start, |
| 1642 | obj->base.size, |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 1643 | true); |
| 1644 | obj->has_aliasing_ppgtt_mapping = 0; |
| 1645 | } |
Daniel Vetter | 7416390 | 2012-02-15 23:50:21 +0100 | [diff] [blame] | 1646 | } |
| 1647 | |
| 1648 | void i915_gem_gtt_finish_object(struct drm_i915_gem_object *obj) |
| 1649 | { |
Ben Widawsky | 5c04228 | 2011-10-17 15:51:55 -0700 | [diff] [blame] | 1650 | struct drm_device *dev = obj->base.dev; |
| 1651 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1652 | bool interruptible; |
| 1653 | |
| 1654 | interruptible = do_idling(dev_priv); |
| 1655 | |
Chris Wilson | 9da3da6 | 2012-06-01 15:20:22 +0100 | [diff] [blame] | 1656 | if (!obj->has_dma_mapping) |
| 1657 | dma_unmap_sg(&dev->pdev->dev, |
| 1658 | obj->pages->sgl, obj->pages->nents, |
| 1659 | PCI_DMA_BIDIRECTIONAL); |
Ben Widawsky | 5c04228 | 2011-10-17 15:51:55 -0700 | [diff] [blame] | 1660 | |
| 1661 | undo_idling(dev_priv, interruptible); |
Daniel Vetter | 7c2e6fd | 2010-11-06 10:10:47 +0100 | [diff] [blame] | 1662 | } |
Daniel Vetter | 644ec02 | 2012-03-26 09:45:40 +0200 | [diff] [blame] | 1663 | |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 1664 | static void i915_gtt_color_adjust(struct drm_mm_node *node, |
| 1665 | unsigned long color, |
| 1666 | unsigned long *start, |
| 1667 | unsigned long *end) |
| 1668 | { |
| 1669 | if (node->color != color) |
| 1670 | *start += 4096; |
| 1671 | |
| 1672 | if (!list_empty(&node->node_list)) { |
| 1673 | node = list_entry(node->node_list.next, |
| 1674 | struct drm_mm_node, |
| 1675 | node_list); |
| 1676 | if (node->allocated && node->color != color) |
| 1677 | *end -= 4096; |
| 1678 | } |
| 1679 | } |
Ben Widawsky | fbe5d36 | 2013-11-04 19:56:49 -0800 | [diff] [blame] | 1680 | |
Ben Widawsky | d7e5008 | 2012-12-18 10:31:25 -0800 | [diff] [blame] | 1681 | void i915_gem_setup_global_gtt(struct drm_device *dev, |
| 1682 | unsigned long start, |
| 1683 | unsigned long mappable_end, |
| 1684 | unsigned long end) |
Daniel Vetter | 644ec02 | 2012-03-26 09:45:40 +0200 | [diff] [blame] | 1685 | { |
Ben Widawsky | e78891c | 2013-01-25 16:41:04 -0800 | [diff] [blame] | 1686 | /* Let GEM Manage all of the aperture. |
| 1687 | * |
| 1688 | * However, leave one page at the end still bound to the scratch page. |
| 1689 | * There are a number of places where the hardware apparently prefetches |
| 1690 | * past the end of the object, and we've seen multiple hangs with the |
| 1691 | * GPU head pointer stuck in a batchbuffer bound at the last page of the |
| 1692 | * aperture. One page should be enough to keep any prefetching inside |
| 1693 | * of the aperture. |
| 1694 | */ |
Ben Widawsky | 40d74980 | 2013-07-31 16:59:59 -0700 | [diff] [blame] | 1695 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1696 | struct i915_address_space *ggtt_vm = &dev_priv->gtt.base; |
Chris Wilson | ed2f345 | 2012-11-15 11:32:19 +0000 | [diff] [blame] | 1697 | struct drm_mm_node *entry; |
| 1698 | struct drm_i915_gem_object *obj; |
| 1699 | unsigned long hole_start, hole_end; |
Daniel Vetter | 644ec02 | 2012-03-26 09:45:40 +0200 | [diff] [blame] | 1700 | |
Ben Widawsky | 35451cb | 2013-01-17 12:45:13 -0800 | [diff] [blame] | 1701 | BUG_ON(mappable_end > end); |
| 1702 | |
Chris Wilson | ed2f345 | 2012-11-15 11:32:19 +0000 | [diff] [blame] | 1703 | /* Subtract the guard page ... */ |
Ben Widawsky | 40d74980 | 2013-07-31 16:59:59 -0700 | [diff] [blame] | 1704 | drm_mm_init(&ggtt_vm->mm, start, end - start - PAGE_SIZE); |
Chris Wilson | 42d6ab4 | 2012-07-26 11:49:32 +0100 | [diff] [blame] | 1705 | if (!HAS_LLC(dev)) |
Ben Widawsky | 93bd864 | 2013-07-16 16:50:06 -0700 | [diff] [blame] | 1706 | dev_priv->gtt.base.mm.color_adjust = i915_gtt_color_adjust; |
Daniel Vetter | 644ec02 | 2012-03-26 09:45:40 +0200 | [diff] [blame] | 1707 | |
Chris Wilson | ed2f345 | 2012-11-15 11:32:19 +0000 | [diff] [blame] | 1708 | /* Mark any preallocated objects as occupied */ |
Ben Widawsky | 35c20a6 | 2013-05-31 11:28:48 -0700 | [diff] [blame] | 1709 | list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) { |
Ben Widawsky | 40d74980 | 2013-07-31 16:59:59 -0700 | [diff] [blame] | 1710 | struct i915_vma *vma = i915_gem_obj_to_vma(obj, ggtt_vm); |
Ben Widawsky | b3a070c | 2013-07-05 14:41:02 -0700 | [diff] [blame] | 1711 | int ret; |
Ben Widawsky | edd41a8 | 2013-07-05 14:41:05 -0700 | [diff] [blame] | 1712 | DRM_DEBUG_KMS("reserving preallocated space: %lx + %zx\n", |
Ben Widawsky | c6cfb32 | 2013-07-05 14:41:06 -0700 | [diff] [blame] | 1713 | i915_gem_obj_ggtt_offset(obj), obj->base.size); |
Chris Wilson | ed2f345 | 2012-11-15 11:32:19 +0000 | [diff] [blame] | 1714 | |
Ben Widawsky | c6cfb32 | 2013-07-05 14:41:06 -0700 | [diff] [blame] | 1715 | WARN_ON(i915_gem_obj_ggtt_bound(obj)); |
Ben Widawsky | 40d74980 | 2013-07-31 16:59:59 -0700 | [diff] [blame] | 1716 | ret = drm_mm_reserve_node(&ggtt_vm->mm, &vma->node); |
Ben Widawsky | c6cfb32 | 2013-07-05 14:41:06 -0700 | [diff] [blame] | 1717 | if (ret) |
Ben Widawsky | b3a070c | 2013-07-05 14:41:02 -0700 | [diff] [blame] | 1718 | DRM_DEBUG_KMS("Reservation failed\n"); |
Chris Wilson | ed2f345 | 2012-11-15 11:32:19 +0000 | [diff] [blame] | 1719 | obj->has_global_gtt_mapping = 1; |
| 1720 | } |
| 1721 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1722 | dev_priv->gtt.base.start = start; |
| 1723 | dev_priv->gtt.base.total = end - start; |
Daniel Vetter | 644ec02 | 2012-03-26 09:45:40 +0200 | [diff] [blame] | 1724 | |
Chris Wilson | ed2f345 | 2012-11-15 11:32:19 +0000 | [diff] [blame] | 1725 | /* Clear any non-preallocated blocks */ |
Ben Widawsky | 40d74980 | 2013-07-31 16:59:59 -0700 | [diff] [blame] | 1726 | drm_mm_for_each_hole(entry, &ggtt_vm->mm, hole_start, hole_end) { |
Chris Wilson | ed2f345 | 2012-11-15 11:32:19 +0000 | [diff] [blame] | 1727 | DRM_DEBUG_KMS("clearing unused GTT space: [%lx, %lx]\n", |
| 1728 | hole_start, hole_end); |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1729 | ggtt_vm->clear_range(ggtt_vm, hole_start, |
| 1730 | hole_end - hole_start, true); |
Chris Wilson | ed2f345 | 2012-11-15 11:32:19 +0000 | [diff] [blame] | 1731 | } |
| 1732 | |
| 1733 | /* And finally clear the reserved guard page */ |
Ben Widawsky | 782f149 | 2014-02-20 11:50:33 -0800 | [diff] [blame] | 1734 | ggtt_vm->clear_range(ggtt_vm, end - PAGE_SIZE, PAGE_SIZE, true); |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1735 | } |
| 1736 | |
Ben Widawsky | d7e5008 | 2012-12-18 10:31:25 -0800 | [diff] [blame] | 1737 | void i915_gem_init_global_gtt(struct drm_device *dev) |
| 1738 | { |
| 1739 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1740 | unsigned long gtt_size, mappable_size; |
Ben Widawsky | d7e5008 | 2012-12-18 10:31:25 -0800 | [diff] [blame] | 1741 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1742 | gtt_size = dev_priv->gtt.base.total; |
Ben Widawsky | 93d1879 | 2013-01-17 12:45:17 -0800 | [diff] [blame] | 1743 | mappable_size = dev_priv->gtt.mappable_end; |
Ben Widawsky | d7e5008 | 2012-12-18 10:31:25 -0800 | [diff] [blame] | 1744 | |
Ben Widawsky | e78891c | 2013-01-25 16:41:04 -0800 | [diff] [blame] | 1745 | i915_gem_setup_global_gtt(dev, 0, mappable_size, gtt_size); |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1746 | } |
| 1747 | |
| 1748 | static int setup_scratch_page(struct drm_device *dev) |
| 1749 | { |
| 1750 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1751 | struct page *page; |
| 1752 | dma_addr_t dma_addr; |
| 1753 | |
| 1754 | page = alloc_page(GFP_KERNEL | GFP_DMA32 | __GFP_ZERO); |
| 1755 | if (page == NULL) |
| 1756 | return -ENOMEM; |
| 1757 | get_page(page); |
| 1758 | set_pages_uc(page, 1); |
| 1759 | |
| 1760 | #ifdef CONFIG_INTEL_IOMMU |
| 1761 | dma_addr = pci_map_page(dev->pdev, page, 0, PAGE_SIZE, |
| 1762 | PCI_DMA_BIDIRECTIONAL); |
| 1763 | if (pci_dma_mapping_error(dev->pdev, dma_addr)) |
| 1764 | return -EINVAL; |
| 1765 | #else |
| 1766 | dma_addr = page_to_phys(page); |
| 1767 | #endif |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1768 | dev_priv->gtt.base.scratch.page = page; |
| 1769 | dev_priv->gtt.base.scratch.addr = dma_addr; |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1770 | |
| 1771 | return 0; |
| 1772 | } |
| 1773 | |
| 1774 | static void teardown_scratch_page(struct drm_device *dev) |
| 1775 | { |
| 1776 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1777 | struct page *page = dev_priv->gtt.base.scratch.page; |
| 1778 | |
| 1779 | set_pages_wb(page, 1); |
| 1780 | pci_unmap_page(dev->pdev, dev_priv->gtt.base.scratch.addr, |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1781 | PAGE_SIZE, PCI_DMA_BIDIRECTIONAL); |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1782 | put_page(page); |
| 1783 | __free_page(page); |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1784 | } |
| 1785 | |
| 1786 | static inline unsigned int gen6_get_total_gtt_size(u16 snb_gmch_ctl) |
| 1787 | { |
| 1788 | snb_gmch_ctl >>= SNB_GMCH_GGMS_SHIFT; |
| 1789 | snb_gmch_ctl &= SNB_GMCH_GGMS_MASK; |
| 1790 | return snb_gmch_ctl << 20; |
| 1791 | } |
| 1792 | |
Ben Widawsky | 9459d25 | 2013-11-03 16:53:55 -0800 | [diff] [blame] | 1793 | static inline unsigned int gen8_get_total_gtt_size(u16 bdw_gmch_ctl) |
| 1794 | { |
| 1795 | bdw_gmch_ctl >>= BDW_GMCH_GGMS_SHIFT; |
| 1796 | bdw_gmch_ctl &= BDW_GMCH_GGMS_MASK; |
| 1797 | if (bdw_gmch_ctl) |
| 1798 | bdw_gmch_ctl = 1 << bdw_gmch_ctl; |
| 1799 | return bdw_gmch_ctl << 20; |
| 1800 | } |
| 1801 | |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1802 | static inline size_t gen6_get_stolen_size(u16 snb_gmch_ctl) |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1803 | { |
| 1804 | snb_gmch_ctl >>= SNB_GMCH_GMS_SHIFT; |
| 1805 | snb_gmch_ctl &= SNB_GMCH_GMS_MASK; |
| 1806 | return snb_gmch_ctl << 25; /* 32 MB units */ |
| 1807 | } |
| 1808 | |
Ben Widawsky | 9459d25 | 2013-11-03 16:53:55 -0800 | [diff] [blame] | 1809 | static inline size_t gen8_get_stolen_size(u16 bdw_gmch_ctl) |
| 1810 | { |
| 1811 | bdw_gmch_ctl >>= BDW_GMCH_GMS_SHIFT; |
| 1812 | bdw_gmch_ctl &= BDW_GMCH_GMS_MASK; |
| 1813 | return bdw_gmch_ctl << 25; /* 32 MB units */ |
| 1814 | } |
| 1815 | |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 1816 | static int ggtt_probe_common(struct drm_device *dev, |
| 1817 | size_t gtt_size) |
| 1818 | { |
| 1819 | struct drm_i915_private *dev_priv = dev->dev_private; |
Bjorn Helgaas | 21c3460 | 2013-12-21 10:52:52 -0700 | [diff] [blame] | 1820 | phys_addr_t gtt_phys_addr; |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 1821 | int ret; |
| 1822 | |
| 1823 | /* For Modern GENs the PTEs and register space are split in the BAR */ |
Bjorn Helgaas | 21c3460 | 2013-12-21 10:52:52 -0700 | [diff] [blame] | 1824 | gtt_phys_addr = pci_resource_start(dev->pdev, 0) + |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 1825 | (pci_resource_len(dev->pdev, 0) / 2); |
| 1826 | |
Bjorn Helgaas | 21c3460 | 2013-12-21 10:52:52 -0700 | [diff] [blame] | 1827 | dev_priv->gtt.gsm = ioremap_wc(gtt_phys_addr, gtt_size); |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 1828 | if (!dev_priv->gtt.gsm) { |
| 1829 | DRM_ERROR("Failed to map the gtt page table\n"); |
| 1830 | return -ENOMEM; |
| 1831 | } |
| 1832 | |
| 1833 | ret = setup_scratch_page(dev); |
| 1834 | if (ret) { |
| 1835 | DRM_ERROR("Scratch setup failed\n"); |
| 1836 | /* iounmap will also get called at remove, but meh */ |
| 1837 | iounmap(dev_priv->gtt.gsm); |
| 1838 | } |
| 1839 | |
| 1840 | return ret; |
| 1841 | } |
| 1842 | |
Ben Widawsky | fbe5d36 | 2013-11-04 19:56:49 -0800 | [diff] [blame] | 1843 | /* The GGTT and PPGTT need a private PPAT setup in order to handle cacheability |
| 1844 | * bits. When using advanced contexts each context stores its own PAT, but |
| 1845 | * writing this data shouldn't be harmful even in those cases. */ |
| 1846 | static void gen8_setup_private_ppat(struct drm_i915_private *dev_priv) |
| 1847 | { |
| 1848 | #define GEN8_PPAT_UC (0<<0) |
| 1849 | #define GEN8_PPAT_WC (1<<0) |
| 1850 | #define GEN8_PPAT_WT (2<<0) |
| 1851 | #define GEN8_PPAT_WB (3<<0) |
| 1852 | #define GEN8_PPAT_ELLC_OVERRIDE (0<<2) |
| 1853 | /* FIXME(BDW): Bspec is completely confused about cache control bits. */ |
| 1854 | #define GEN8_PPAT_LLC (1<<2) |
| 1855 | #define GEN8_PPAT_LLCELLC (2<<2) |
| 1856 | #define GEN8_PPAT_LLCeLLC (3<<2) |
| 1857 | #define GEN8_PPAT_AGE(x) (x<<4) |
| 1858 | #define GEN8_PPAT(i, x) ((uint64_t) (x) << ((i) * 8)) |
| 1859 | uint64_t pat; |
| 1860 | |
| 1861 | pat = GEN8_PPAT(0, GEN8_PPAT_WB | GEN8_PPAT_LLC) | /* for normal objects, no eLLC */ |
| 1862 | GEN8_PPAT(1, GEN8_PPAT_WC | GEN8_PPAT_LLCELLC) | /* for something pointing to ptes? */ |
| 1863 | GEN8_PPAT(2, GEN8_PPAT_WT | GEN8_PPAT_LLCELLC) | /* for scanout with eLLC */ |
| 1864 | GEN8_PPAT(3, GEN8_PPAT_UC) | /* Uncached objects, mostly for scanout */ |
| 1865 | GEN8_PPAT(4, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(0)) | |
| 1866 | GEN8_PPAT(5, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(1)) | |
| 1867 | GEN8_PPAT(6, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(2)) | |
| 1868 | GEN8_PPAT(7, GEN8_PPAT_WB | GEN8_PPAT_LLCELLC | GEN8_PPAT_AGE(3)); |
| 1869 | |
| 1870 | /* XXX: spec defines this as 2 distinct registers. It's unclear if a 64b |
| 1871 | * write would work. */ |
| 1872 | I915_WRITE(GEN8_PRIVATE_PAT, pat); |
| 1873 | I915_WRITE(GEN8_PRIVATE_PAT + 4, pat >> 32); |
| 1874 | } |
| 1875 | |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 1876 | static int gen8_gmch_probe(struct drm_device *dev, |
| 1877 | size_t *gtt_total, |
| 1878 | size_t *stolen, |
| 1879 | phys_addr_t *mappable_base, |
| 1880 | unsigned long *mappable_end) |
| 1881 | { |
| 1882 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1883 | unsigned int gtt_size; |
| 1884 | u16 snb_gmch_ctl; |
| 1885 | int ret; |
| 1886 | |
| 1887 | /* TODO: We're not aware of mappable constraints on gen8 yet */ |
| 1888 | *mappable_base = pci_resource_start(dev->pdev, 2); |
| 1889 | *mappable_end = pci_resource_len(dev->pdev, 2); |
| 1890 | |
| 1891 | if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(39))) |
| 1892 | pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(39)); |
| 1893 | |
| 1894 | pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl); |
| 1895 | |
| 1896 | *stolen = gen8_get_stolen_size(snb_gmch_ctl); |
| 1897 | |
| 1898 | gtt_size = gen8_get_total_gtt_size(snb_gmch_ctl); |
Ben Widawsky | d31eb10 | 2013-11-02 21:07:17 -0700 | [diff] [blame] | 1899 | *gtt_total = (gtt_size / sizeof(gen8_gtt_pte_t)) << PAGE_SHIFT; |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 1900 | |
Ben Widawsky | fbe5d36 | 2013-11-04 19:56:49 -0800 | [diff] [blame] | 1901 | gen8_setup_private_ppat(dev_priv); |
| 1902 | |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 1903 | ret = ggtt_probe_common(dev, gtt_size); |
| 1904 | |
Ben Widawsky | 94ec8f6 | 2013-11-02 21:07:18 -0700 | [diff] [blame] | 1905 | dev_priv->gtt.base.clear_range = gen8_ggtt_clear_range; |
| 1906 | dev_priv->gtt.base.insert_entries = gen8_ggtt_insert_entries; |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 1907 | |
| 1908 | return ret; |
| 1909 | } |
| 1910 | |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1911 | static int gen6_gmch_probe(struct drm_device *dev, |
| 1912 | size_t *gtt_total, |
Ben Widawsky | 41907dd | 2013-02-08 11:32:47 -0800 | [diff] [blame] | 1913 | size_t *stolen, |
| 1914 | phys_addr_t *mappable_base, |
| 1915 | unsigned long *mappable_end) |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1916 | { |
| 1917 | struct drm_i915_private *dev_priv = dev->dev_private; |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1918 | unsigned int gtt_size; |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1919 | u16 snb_gmch_ctl; |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1920 | int ret; |
| 1921 | |
Ben Widawsky | 41907dd | 2013-02-08 11:32:47 -0800 | [diff] [blame] | 1922 | *mappable_base = pci_resource_start(dev->pdev, 2); |
| 1923 | *mappable_end = pci_resource_len(dev->pdev, 2); |
| 1924 | |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1925 | /* 64/512MB is the current min/max we actually know of, but this is just |
| 1926 | * a coarse sanity check. |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1927 | */ |
Ben Widawsky | 41907dd | 2013-02-08 11:32:47 -0800 | [diff] [blame] | 1928 | if ((*mappable_end < (64<<20) || (*mappable_end > (512<<20)))) { |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1929 | DRM_ERROR("Unknown GMADR size (%lx)\n", |
| 1930 | dev_priv->gtt.mappable_end); |
| 1931 | return -ENXIO; |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1932 | } |
| 1933 | |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1934 | if (!pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(40))) |
| 1935 | pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(40)); |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1936 | pci_read_config_word(dev->pdev, SNB_GMCH_CTRL, &snb_gmch_ctl); |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1937 | |
Ben Widawsky | c4ae25e | 2013-05-01 11:00:34 -0700 | [diff] [blame] | 1938 | *stolen = gen6_get_stolen_size(snb_gmch_ctl); |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1939 | |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 1940 | gtt_size = gen6_get_total_gtt_size(snb_gmch_ctl); |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1941 | *gtt_total = (gtt_size / sizeof(gen6_gtt_pte_t)) << PAGE_SHIFT; |
| 1942 | |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 1943 | ret = ggtt_probe_common(dev, gtt_size); |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1944 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1945 | dev_priv->gtt.base.clear_range = gen6_ggtt_clear_range; |
| 1946 | dev_priv->gtt.base.insert_entries = gen6_ggtt_insert_entries; |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1947 | |
| 1948 | return ret; |
| 1949 | } |
| 1950 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1951 | static void gen6_gmch_remove(struct i915_address_space *vm) |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1952 | { |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1953 | |
| 1954 | struct i915_gtt *gtt = container_of(vm, struct i915_gtt, base); |
Ben Widawsky | 5ed1678 | 2013-11-25 09:54:43 -0800 | [diff] [blame] | 1955 | |
| 1956 | drm_mm_takedown(&vm->mm); |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1957 | iounmap(gtt->gsm); |
| 1958 | teardown_scratch_page(vm->dev); |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1959 | } |
| 1960 | |
| 1961 | static int i915_gmch_probe(struct drm_device *dev, |
| 1962 | size_t *gtt_total, |
Ben Widawsky | 41907dd | 2013-02-08 11:32:47 -0800 | [diff] [blame] | 1963 | size_t *stolen, |
| 1964 | phys_addr_t *mappable_base, |
| 1965 | unsigned long *mappable_end) |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1966 | { |
| 1967 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1968 | int ret; |
| 1969 | |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1970 | ret = intel_gmch_probe(dev_priv->bridge_dev, dev_priv->dev->pdev, NULL); |
| 1971 | if (!ret) { |
| 1972 | DRM_ERROR("failed to set up gmch\n"); |
| 1973 | return -EIO; |
| 1974 | } |
| 1975 | |
Ben Widawsky | 41907dd | 2013-02-08 11:32:47 -0800 | [diff] [blame] | 1976 | intel_gtt_get(gtt_total, stolen, mappable_base, mappable_end); |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1977 | |
| 1978 | dev_priv->gtt.do_idle_maps = needs_idle_maps(dev_priv->dev); |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1979 | dev_priv->gtt.base.clear_range = i915_ggtt_clear_range; |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1980 | |
Chris Wilson | c0a7f81 | 2013-12-30 12:16:15 +0000 | [diff] [blame] | 1981 | if (unlikely(dev_priv->gtt.do_idle_maps)) |
| 1982 | DRM_INFO("applying Ironlake quirks for intel_iommu\n"); |
| 1983 | |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1984 | return 0; |
| 1985 | } |
| 1986 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 1987 | static void i915_gmch_remove(struct i915_address_space *vm) |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1988 | { |
| 1989 | intel_gmch_remove(); |
| 1990 | } |
| 1991 | |
| 1992 | int i915_gem_gtt_init(struct drm_device *dev) |
| 1993 | { |
| 1994 | struct drm_i915_private *dev_priv = dev->dev_private; |
| 1995 | struct i915_gtt *gtt = &dev_priv->gtt; |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1996 | int ret; |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 1997 | |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 1998 | if (INTEL_INFO(dev)->gen <= 5) { |
Ben Widawsky | b2f21b4 | 2013-06-27 16:30:20 -0700 | [diff] [blame] | 1999 | gtt->gtt_probe = i915_gmch_probe; |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 2000 | gtt->base.cleanup = i915_gmch_remove; |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 2001 | } else if (INTEL_INFO(dev)->gen < 8) { |
Ben Widawsky | b2f21b4 | 2013-06-27 16:30:20 -0700 | [diff] [blame] | 2002 | gtt->gtt_probe = gen6_gmch_probe; |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 2003 | gtt->base.cleanup = gen6_gmch_remove; |
Ben Widawsky | 4d15c14 | 2013-07-04 11:02:06 -0700 | [diff] [blame] | 2004 | if (IS_HASWELL(dev) && dev_priv->ellc_size) |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 2005 | gtt->base.pte_encode = iris_pte_encode; |
Ben Widawsky | 4d15c14 | 2013-07-04 11:02:06 -0700 | [diff] [blame] | 2006 | else if (IS_HASWELL(dev)) |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 2007 | gtt->base.pte_encode = hsw_pte_encode; |
Ben Widawsky | b2f21b4 | 2013-06-27 16:30:20 -0700 | [diff] [blame] | 2008 | else if (IS_VALLEYVIEW(dev)) |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 2009 | gtt->base.pte_encode = byt_pte_encode; |
Chris Wilson | 350ec88 | 2013-08-06 13:17:02 +0100 | [diff] [blame] | 2010 | else if (INTEL_INFO(dev)->gen >= 7) |
| 2011 | gtt->base.pte_encode = ivb_pte_encode; |
Ben Widawsky | b2f21b4 | 2013-06-27 16:30:20 -0700 | [diff] [blame] | 2012 | else |
Chris Wilson | 350ec88 | 2013-08-06 13:17:02 +0100 | [diff] [blame] | 2013 | gtt->base.pte_encode = snb_pte_encode; |
Ben Widawsky | 6334013 | 2013-11-04 19:32:22 -0800 | [diff] [blame] | 2014 | } else { |
| 2015 | dev_priv->gtt.gtt_probe = gen8_gmch_probe; |
| 2016 | dev_priv->gtt.base.cleanup = gen6_gmch_remove; |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 2017 | } |
| 2018 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 2019 | ret = gtt->gtt_probe(dev, >t->base.total, >t->stolen_size, |
Ben Widawsky | b2f21b4 | 2013-06-27 16:30:20 -0700 | [diff] [blame] | 2020 | >t->mappable_base, >t->mappable_end); |
Ben Widawsky | a54c0c2 | 2013-01-24 14:45:00 -0800 | [diff] [blame] | 2021 | if (ret) |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 2022 | return ret; |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 2023 | |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 2024 | gtt->base.dev = dev; |
| 2025 | |
Ben Widawsky | baa09f5 | 2013-01-24 13:49:57 -0800 | [diff] [blame] | 2026 | /* GMADR is the PCI mmio aperture into the global GTT. */ |
Ben Widawsky | 853ba5d | 2013-07-16 16:50:05 -0700 | [diff] [blame] | 2027 | DRM_INFO("Memory usable by graphics device = %zdM\n", |
| 2028 | gtt->base.total >> 20); |
Ben Widawsky | b2f21b4 | 2013-06-27 16:30:20 -0700 | [diff] [blame] | 2029 | DRM_DEBUG_DRIVER("GMADR size = %ldM\n", gtt->mappable_end >> 20); |
| 2030 | DRM_DEBUG_DRIVER("GTT stolen size = %zdM\n", gtt->stolen_size >> 20); |
Daniel Vetter | 7faf1ab | 2013-01-24 14:44:55 -0800 | [diff] [blame] | 2031 | |
Ben Widawsky | e76e9ae | 2012-11-04 09:21:27 -0800 | [diff] [blame] | 2032 | return 0; |
Daniel Vetter | 644ec02 | 2012-03-26 09:45:40 +0200 | [diff] [blame] | 2033 | } |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 2034 | |
| 2035 | static struct i915_vma *__i915_gem_vma_create(struct drm_i915_gem_object *obj, |
| 2036 | struct i915_address_space *vm) |
| 2037 | { |
| 2038 | struct i915_vma *vma = kzalloc(sizeof(*vma), GFP_KERNEL); |
| 2039 | if (vma == NULL) |
| 2040 | return ERR_PTR(-ENOMEM); |
| 2041 | |
| 2042 | INIT_LIST_HEAD(&vma->vma_link); |
| 2043 | INIT_LIST_HEAD(&vma->mm_list); |
| 2044 | INIT_LIST_HEAD(&vma->exec_list); |
| 2045 | vma->vm = vm; |
| 2046 | vma->obj = obj; |
| 2047 | |
| 2048 | switch (INTEL_INFO(vm->dev)->gen) { |
| 2049 | case 8: |
| 2050 | case 7: |
| 2051 | case 6: |
Ben Widawsky | 7e0d96b | 2013-12-06 14:11:26 -0800 | [diff] [blame] | 2052 | if (i915_is_ggtt(vm)) { |
| 2053 | vma->unbind_vma = ggtt_unbind_vma; |
| 2054 | vma->bind_vma = ggtt_bind_vma; |
| 2055 | } else { |
| 2056 | vma->unbind_vma = ppgtt_unbind_vma; |
| 2057 | vma->bind_vma = ppgtt_bind_vma; |
| 2058 | } |
Ben Widawsky | 6f65e29 | 2013-12-06 14:10:56 -0800 | [diff] [blame] | 2059 | break; |
| 2060 | case 5: |
| 2061 | case 4: |
| 2062 | case 3: |
| 2063 | case 2: |
| 2064 | BUG_ON(!i915_is_ggtt(vm)); |
| 2065 | vma->unbind_vma = i915_ggtt_unbind_vma; |
| 2066 | vma->bind_vma = i915_ggtt_bind_vma; |
| 2067 | break; |
| 2068 | default: |
| 2069 | BUG(); |
| 2070 | } |
| 2071 | |
| 2072 | /* Keep GGTT vmas first to make debug easier */ |
| 2073 | if (i915_is_ggtt(vm)) |
| 2074 | list_add(&vma->vma_link, &obj->vma_list); |
| 2075 | else |
| 2076 | list_add_tail(&vma->vma_link, &obj->vma_list); |
| 2077 | |
| 2078 | return vma; |
| 2079 | } |
| 2080 | |
| 2081 | struct i915_vma * |
| 2082 | i915_gem_obj_lookup_or_create_vma(struct drm_i915_gem_object *obj, |
| 2083 | struct i915_address_space *vm) |
| 2084 | { |
| 2085 | struct i915_vma *vma; |
| 2086 | |
| 2087 | vma = i915_gem_obj_to_vma(obj, vm); |
| 2088 | if (!vma) |
| 2089 | vma = __i915_gem_vma_create(obj, vm); |
| 2090 | |
| 2091 | return vma; |
| 2092 | } |