1 /* 2 * Copyright 2013 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 * Authors: Dave Airlie 23 * Alon Levy 24 */ 25 26 #include "qxl_drv.h" 27 #include "qxl_object.h" 28 29 #include <drm/drm_crtc_helper.h> 30 #include <linux/io-mapping.h> 31 32 int qxl_log_level; 33 34 static bool qxl_check_device(struct qxl_device *qdev) 35 { 36 struct qxl_rom *rom = qdev->rom; 37 38 if (rom->magic != 0x4f525851) { 39 DRM_ERROR("bad rom signature %x\n", rom->magic); 40 return false; 41 } 42 43 DRM_INFO("Device Version %d.%d\n", rom->id, rom->update_id); 44 DRM_INFO("Compression level %d log level %d\n", rom->compression_level, 45 rom->log_level); 46 DRM_INFO("%d io pages at offset 0x%x\n", 47 rom->num_io_pages, rom->pages_offset); 48 DRM_INFO("%d byte draw area at offset 0x%x\n", 49 rom->surface0_area_size, rom->draw_area_offset); 50 51 qdev->vram_size = rom->surface0_area_size; 52 DRM_INFO("RAM header offset: 0x%x\n", rom->ram_header_offset); 53 return true; 54 } 55 56 static void setup_hw_slot(struct qxl_device *qdev, int slot_index, 57 struct qxl_memslot *slot) 58 { 59 qdev->ram_header->mem_slot.mem_start = slot->start_phys_addr; 60 qdev->ram_header->mem_slot.mem_end = slot->end_phys_addr; 61 qxl_io_memslot_add(qdev, slot_index); 62 } 63 64 static uint8_t setup_slot(struct qxl_device *qdev, uint8_t slot_index_offset, 65 unsigned long start_phys_addr, unsigned long end_phys_addr) 66 { 67 uint64_t high_bits; 68 struct qxl_memslot *slot; 69 uint8_t slot_index; 70 71 slot_index = qdev->rom->slots_start + slot_index_offset; 72 slot = &qdev->mem_slots[slot_index]; 73 slot->start_phys_addr = start_phys_addr; 74 slot->end_phys_addr = end_phys_addr; 75 76 setup_hw_slot(qdev, slot_index, slot); 77 78 slot->generation = qdev->rom->slot_generation; 79 high_bits = slot_index << qdev->slot_gen_bits; 80 high_bits |= slot->generation; 81 high_bits <<= (64 - (qdev->slot_gen_bits + qdev->slot_id_bits)); 82 slot->high_bits = high_bits; 83 return slot_index; 84 } 85 86 void qxl_reinit_memslots(struct qxl_device *qdev) 87 { 88 setup_hw_slot(qdev, qdev->main_mem_slot, &qdev->mem_slots[qdev->main_mem_slot]); 89 setup_hw_slot(qdev, qdev->surfaces_mem_slot, &qdev->mem_slots[qdev->surfaces_mem_slot]); 90 } 91 92 static void qxl_gc_work(struct work_struct *work) 93 { 94 struct qxl_device *qdev = container_of(work, struct qxl_device, gc_work); 95 96 qxl_garbage_collect(qdev); 97 } 98 99 int qxl_device_init(struct qxl_device *qdev, 100 struct drm_driver *drv, 101 struct pci_dev *pdev) 102 { 103 int r, sb; 104 105 r = drm_dev_init(&qdev->ddev, drv, &pdev->dev); 106 if (r) { 107 pr_err("Unable to init drm dev"); 108 goto error; 109 } 110 111 qdev->ddev.pdev = pdev; 112 pci_set_drvdata(pdev, &qdev->ddev); 113 qdev->ddev.dev_private = qdev; 114 115 mutex_init(&qdev->gem.mutex); 116 mutex_init(&qdev->update_area_mutex); 117 mutex_init(&qdev->release_mutex); 118 mutex_init(&qdev->surf_evict_mutex); 119 qxl_gem_init(qdev); 120 121 qdev->rom_base = pci_resource_start(pdev, 2); 122 qdev->rom_size = pci_resource_len(pdev, 2); 123 qdev->vram_base = pci_resource_start(pdev, 0); 124 qdev->io_base = pci_resource_start(pdev, 3); 125 126 qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0)); 127 if (!qdev->vram_mapping) { 128 pr_err("Unable to create vram_mapping"); 129 r = -ENOMEM; 130 goto error; 131 } 132 133 if (pci_resource_len(pdev, 4) > 0) { 134 /* 64bit surface bar present */ 135 sb = 4; 136 qdev->surfaceram_base = pci_resource_start(pdev, sb); 137 qdev->surfaceram_size = pci_resource_len(pdev, sb); 138 qdev->surface_mapping = 139 io_mapping_create_wc(qdev->surfaceram_base, 140 qdev->surfaceram_size); 141 } 142 if (qdev->surface_mapping == NULL) { 143 /* 64bit surface bar not present (or mapping failed) */ 144 sb = 1; 145 qdev->surfaceram_base = pci_resource_start(pdev, sb); 146 qdev->surfaceram_size = pci_resource_len(pdev, sb); 147 qdev->surface_mapping = 148 io_mapping_create_wc(qdev->surfaceram_base, 149 qdev->surfaceram_size); 150 if (!qdev->surface_mapping) { 151 pr_err("Unable to create surface_mapping"); 152 r = -ENOMEM; 153 goto vram_mapping_free; 154 } 155 } 156 157 DRM_DEBUG_KMS("qxl: vram %llx-%llx(%dM %dk), surface %llx-%llx(%dM %dk, %s)\n", 158 (unsigned long long)qdev->vram_base, 159 (unsigned long long)pci_resource_end(pdev, 0), 160 (int)pci_resource_len(pdev, 0) / 1024 / 1024, 161 (int)pci_resource_len(pdev, 0) / 1024, 162 (unsigned long long)qdev->surfaceram_base, 163 (unsigned long long)pci_resource_end(pdev, sb), 164 (int)qdev->surfaceram_size / 1024 / 1024, 165 (int)qdev->surfaceram_size / 1024, 166 (sb == 4) ? "64bit" : "32bit"); 167 168 qdev->rom = ioremap(qdev->rom_base, qdev->rom_size); 169 if (!qdev->rom) { 170 pr_err("Unable to ioremap ROM\n"); 171 r = -ENOMEM; 172 goto surface_mapping_free; 173 } 174 175 if (!qxl_check_device(qdev)) { 176 r = -ENODEV; 177 goto surface_mapping_free; 178 } 179 180 r = qxl_bo_init(qdev); 181 if (r) { 182 DRM_ERROR("bo init failed %d\n", r); 183 goto rom_unmap; 184 } 185 186 qdev->ram_header = ioremap(qdev->vram_base + 187 qdev->rom->ram_header_offset, 188 sizeof(*qdev->ram_header)); 189 if (!qdev->ram_header) { 190 DRM_ERROR("Unable to ioremap RAM header\n"); 191 r = -ENOMEM; 192 goto bo_fini; 193 } 194 195 qdev->command_ring = qxl_ring_create(&(qdev->ram_header->cmd_ring_hdr), 196 sizeof(struct qxl_command), 197 QXL_COMMAND_RING_SIZE, 198 qdev->io_base + QXL_IO_NOTIFY_CMD, 199 false, 200 &qdev->display_event); 201 if (!qdev->command_ring) { 202 DRM_ERROR("Unable to create command ring\n"); 203 r = -ENOMEM; 204 goto ram_header_unmap; 205 } 206 207 qdev->cursor_ring = qxl_ring_create( 208 &(qdev->ram_header->cursor_ring_hdr), 209 sizeof(struct qxl_command), 210 QXL_CURSOR_RING_SIZE, 211 qdev->io_base + QXL_IO_NOTIFY_CMD, 212 false, 213 &qdev->cursor_event); 214 215 if (!qdev->cursor_ring) { 216 DRM_ERROR("Unable to create cursor ring\n"); 217 r = -ENOMEM; 218 goto command_ring_free; 219 } 220 221 qdev->release_ring = qxl_ring_create( 222 &(qdev->ram_header->release_ring_hdr), 223 sizeof(uint64_t), 224 QXL_RELEASE_RING_SIZE, 0, true, 225 NULL); 226 227 if (!qdev->release_ring) { 228 DRM_ERROR("Unable to create release ring\n"); 229 r = -ENOMEM; 230 goto cursor_ring_free; 231 } 232 /* TODO - slot initialization should happen on reset. where is our 233 * reset handler? */ 234 qdev->n_mem_slots = qdev->rom->slots_end; 235 qdev->slot_gen_bits = qdev->rom->slot_gen_bits; 236 qdev->slot_id_bits = qdev->rom->slot_id_bits; 237 qdev->va_slot_mask = 238 (~(uint64_t)0) >> (qdev->slot_id_bits + qdev->slot_gen_bits); 239 240 qdev->mem_slots = 241 kmalloc_array(qdev->n_mem_slots, sizeof(struct qxl_memslot), 242 GFP_KERNEL); 243 244 if (!qdev->mem_slots) { 245 DRM_ERROR("Unable to alloc mem slots\n"); 246 r = -ENOMEM; 247 goto release_ring_free; 248 } 249 250 idr_init(&qdev->release_idr); 251 spin_lock_init(&qdev->release_idr_lock); 252 spin_lock_init(&qdev->release_lock); 253 254 idr_init(&qdev->surf_id_idr); 255 spin_lock_init(&qdev->surf_id_idr_lock); 256 257 mutex_init(&qdev->async_io_mutex); 258 259 /* reset the device into a known state - no memslots, no primary 260 * created, no surfaces. */ 261 qxl_io_reset(qdev); 262 263 /* must initialize irq before first async io - slot creation */ 264 r = qxl_irq_init(qdev); 265 if (r) { 266 DRM_ERROR("Unable to init qxl irq\n"); 267 goto mem_slots_free; 268 } 269 270 /* 271 * Note that virtual is surface0. We rely on the single ioremap done 272 * before. 273 */ 274 qdev->main_mem_slot = setup_slot(qdev, 0, 275 (unsigned long)qdev->vram_base, 276 (unsigned long)qdev->vram_base + qdev->rom->ram_header_offset); 277 qdev->surfaces_mem_slot = setup_slot(qdev, 1, 278 (unsigned long)qdev->surfaceram_base, 279 (unsigned long)qdev->surfaceram_base + qdev->surfaceram_size); 280 DRM_INFO("main mem slot %d [%lx,%x]\n", 281 qdev->main_mem_slot, 282 (unsigned long)qdev->vram_base, qdev->rom->ram_header_offset); 283 DRM_INFO("surface mem slot %d [%lx,%lx]\n", 284 qdev->surfaces_mem_slot, 285 (unsigned long)qdev->surfaceram_base, 286 (unsigned long)qdev->surfaceram_size); 287 288 INIT_WORK(&qdev->gc_work, qxl_gc_work); 289 290 return 0; 291 292 mem_slots_free: 293 kfree(qdev->mem_slots); 294 release_ring_free: 295 qxl_ring_free(qdev->release_ring); 296 cursor_ring_free: 297 qxl_ring_free(qdev->cursor_ring); 298 command_ring_free: 299 qxl_ring_free(qdev->command_ring); 300 ram_header_unmap: 301 iounmap(qdev->ram_header); 302 bo_fini: 303 qxl_bo_fini(qdev); 304 rom_unmap: 305 iounmap(qdev->rom); 306 surface_mapping_free: 307 io_mapping_free(qdev->surface_mapping); 308 vram_mapping_free: 309 io_mapping_free(qdev->vram_mapping); 310 error: 311 return r; 312 } 313 314 void qxl_device_fini(struct qxl_device *qdev) 315 { 316 qxl_bo_unref(&qdev->current_release_bo[0]); 317 qxl_bo_unref(&qdev->current_release_bo[1]); 318 flush_work(&qdev->gc_work); 319 qxl_ring_free(qdev->command_ring); 320 qxl_ring_free(qdev->cursor_ring); 321 qxl_ring_free(qdev->release_ring); 322 qxl_gem_fini(qdev); 323 qxl_bo_fini(qdev); 324 io_mapping_free(qdev->surface_mapping); 325 io_mapping_free(qdev->vram_mapping); 326 iounmap(qdev->ram_header); 327 iounmap(qdev->rom); 328 qdev->rom = NULL; 329 } 330