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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 <linux/io-mapping.h> | |
30 | ||
31 | int qxl_log_level; | |
32 | ||
33 | static void qxl_dump_mode(struct qxl_device *qdev, void *p) | |
34 | { | |
35 | struct qxl_mode *m = p; | |
36 | DRM_DEBUG_KMS("%d: %dx%d %d bits, stride %d, %dmm x %dmm, orientation %d\n", | |
37 | m->id, m->x_res, m->y_res, m->bits, m->stride, m->x_mili, | |
38 | m->y_mili, m->orientation); | |
39 | } | |
40 | ||
41 | static bool qxl_check_device(struct qxl_device *qdev) | |
42 | { | |
43 | struct qxl_rom *rom = qdev->rom; | |
44 | int mode_offset; | |
45 | int i; | |
46 | ||
47 | if (rom->magic != 0x4f525851) { | |
48 | DRM_ERROR("bad rom signature %x\n", rom->magic); | |
49 | return false; | |
50 | } | |
51 | ||
52 | DRM_INFO("Device Version %d.%d\n", rom->id, rom->update_id); | |
53 | DRM_INFO("Compression level %d log level %d\n", rom->compression_level, | |
54 | rom->log_level); | |
55 | DRM_INFO("Currently using mode #%d, list at 0x%x\n", | |
56 | rom->mode, rom->modes_offset); | |
57 | DRM_INFO("%d io pages at offset 0x%x\n", | |
58 | rom->num_io_pages, rom->pages_offset); | |
59 | DRM_INFO("%d byte draw area at offset 0x%x\n", | |
60 | rom->surface0_area_size, rom->draw_area_offset); | |
61 | ||
62 | qdev->vram_size = rom->surface0_area_size; | |
63 | DRM_INFO("RAM header offset: 0x%x\n", rom->ram_header_offset); | |
64 | ||
65 | mode_offset = rom->modes_offset / 4; | |
66 | qdev->mode_info.num_modes = ((u32 *)rom)[mode_offset]; | |
67 | DRM_INFO("rom modes offset 0x%x for %d modes\n", rom->modes_offset, | |
68 | qdev->mode_info.num_modes); | |
69 | qdev->mode_info.modes = (void *)((uint32_t *)rom + mode_offset + 1); | |
70 | for (i = 0; i < qdev->mode_info.num_modes; i++) | |
71 | qxl_dump_mode(qdev, qdev->mode_info.modes + i); | |
72 | return true; | |
73 | } | |
74 | ||
75 | static uint8_t setup_slot(struct qxl_device *qdev, uint8_t slot_index_offset, | |
76 | unsigned long start_phys_addr, unsigned long end_phys_addr) | |
77 | { | |
78 | uint64_t high_bits; | |
79 | struct qxl_memslot *slot; | |
80 | uint8_t slot_index; | |
81 | struct qxl_ram_header *ram_header = qdev->ram_header; | |
82 | ||
83 | slot_index = qdev->rom->slots_start + slot_index_offset; | |
84 | slot = &qdev->mem_slots[slot_index]; | |
85 | slot->start_phys_addr = start_phys_addr; | |
86 | slot->end_phys_addr = end_phys_addr; | |
87 | ram_header->mem_slot.mem_start = slot->start_phys_addr; | |
88 | ram_header->mem_slot.mem_end = slot->end_phys_addr; | |
89 | qxl_io_memslot_add(qdev, slot_index); | |
90 | slot->generation = qdev->rom->slot_generation; | |
91 | high_bits = slot_index << qdev->slot_gen_bits; | |
92 | high_bits |= slot->generation; | |
93 | high_bits <<= (64 - (qdev->slot_gen_bits + qdev->slot_id_bits)); | |
94 | slot->high_bits = high_bits; | |
95 | return slot_index; | |
96 | } | |
97 | ||
98 | static void qxl_gc_work(struct work_struct *work) | |
99 | { | |
100 | struct qxl_device *qdev = container_of(work, struct qxl_device, gc_work); | |
101 | qxl_garbage_collect(qdev); | |
102 | } | |
103 | ||
104 | int qxl_device_init(struct qxl_device *qdev, | |
105 | struct drm_device *ddev, | |
106 | struct pci_dev *pdev, | |
107 | unsigned long flags) | |
108 | { | |
109 | int r; | |
110 | ||
111 | qdev->dev = &pdev->dev; | |
112 | qdev->ddev = ddev; | |
113 | qdev->pdev = pdev; | |
114 | qdev->flags = flags; | |
115 | ||
116 | mutex_init(&qdev->gem.mutex); | |
117 | mutex_init(&qdev->update_area_mutex); | |
118 | mutex_init(&qdev->release_mutex); | |
119 | mutex_init(&qdev->surf_evict_mutex); | |
120 | INIT_LIST_HEAD(&qdev->gem.objects); | |
121 | ||
122 | qdev->rom_base = pci_resource_start(pdev, 2); | |
123 | qdev->rom_size = pci_resource_len(pdev, 2); | |
124 | qdev->vram_base = pci_resource_start(pdev, 0); | |
125 | qdev->surfaceram_base = pci_resource_start(pdev, 1); | |
126 | qdev->surfaceram_size = pci_resource_len(pdev, 1); | |
127 | qdev->io_base = pci_resource_start(pdev, 3); | |
128 | ||
129 | qdev->vram_mapping = io_mapping_create_wc(qdev->vram_base, pci_resource_len(pdev, 0)); | |
130 | qdev->surface_mapping = io_mapping_create_wc(qdev->surfaceram_base, qdev->surfaceram_size); | |
131 | DRM_DEBUG_KMS("qxl: vram %p-%p(%dM %dk), surface %p-%p(%dM %dk)\n", | |
132 | (void *)qdev->vram_base, (void *)pci_resource_end(pdev, 0), | |
133 | (int)pci_resource_len(pdev, 0) / 1024 / 1024, | |
134 | (int)pci_resource_len(pdev, 0) / 1024, | |
135 | (void *)qdev->surfaceram_base, | |
136 | (void *)pci_resource_end(pdev, 1), | |
137 | (int)qdev->surfaceram_size / 1024 / 1024, | |
138 | (int)qdev->surfaceram_size / 1024); | |
139 | ||
140 | qdev->rom = ioremap(qdev->rom_base, qdev->rom_size); | |
141 | if (!qdev->rom) { | |
142 | pr_err("Unable to ioremap ROM\n"); | |
143 | return -ENOMEM; | |
144 | } | |
145 | ||
146 | qxl_check_device(qdev); | |
147 | ||
148 | r = qxl_bo_init(qdev); | |
149 | if (r) { | |
150 | DRM_ERROR("bo init failed %d\n", r); | |
151 | return r; | |
152 | } | |
153 | ||
154 | qdev->ram_header = ioremap(qdev->vram_base + | |
155 | qdev->rom->ram_header_offset, | |
156 | sizeof(*qdev->ram_header)); | |
157 | ||
158 | qdev->command_ring = qxl_ring_create(&(qdev->ram_header->cmd_ring_hdr), | |
159 | sizeof(struct qxl_command), | |
160 | QXL_COMMAND_RING_SIZE, | |
161 | qdev->io_base + QXL_IO_NOTIFY_CMD, | |
162 | false, | |
163 | &qdev->display_event); | |
164 | ||
165 | qdev->cursor_ring = qxl_ring_create( | |
166 | &(qdev->ram_header->cursor_ring_hdr), | |
167 | sizeof(struct qxl_command), | |
168 | QXL_CURSOR_RING_SIZE, | |
169 | qdev->io_base + QXL_IO_NOTIFY_CMD, | |
170 | false, | |
171 | &qdev->cursor_event); | |
172 | ||
173 | qdev->release_ring = qxl_ring_create( | |
174 | &(qdev->ram_header->release_ring_hdr), | |
175 | sizeof(uint64_t), | |
176 | QXL_RELEASE_RING_SIZE, 0, true, | |
177 | NULL); | |
178 | ||
179 | /* TODO - slot initialization should happen on reset. where is our | |
180 | * reset handler? */ | |
181 | qdev->n_mem_slots = qdev->rom->slots_end; | |
182 | qdev->slot_gen_bits = qdev->rom->slot_gen_bits; | |
183 | qdev->slot_id_bits = qdev->rom->slot_id_bits; | |
184 | qdev->va_slot_mask = | |
185 | (~(uint64_t)0) >> (qdev->slot_id_bits + qdev->slot_gen_bits); | |
186 | ||
187 | qdev->mem_slots = | |
188 | kmalloc(qdev->n_mem_slots * sizeof(struct qxl_memslot), | |
189 | GFP_KERNEL); | |
190 | ||
191 | idr_init(&qdev->release_idr); | |
192 | spin_lock_init(&qdev->release_idr_lock); | |
193 | ||
194 | idr_init(&qdev->surf_id_idr); | |
195 | spin_lock_init(&qdev->surf_id_idr_lock); | |
196 | ||
197 | mutex_init(&qdev->async_io_mutex); | |
198 | ||
199 | /* reset the device into a known state - no memslots, no primary | |
200 | * created, no surfaces. */ | |
201 | qxl_io_reset(qdev); | |
202 | ||
203 | /* must initialize irq before first async io - slot creation */ | |
204 | r = qxl_irq_init(qdev); | |
205 | if (r) | |
206 | return r; | |
207 | ||
208 | /* | |
209 | * Note that virtual is surface0. We rely on the single ioremap done | |
210 | * before. | |
211 | */ | |
212 | qdev->main_mem_slot = setup_slot(qdev, 0, | |
213 | (unsigned long)qdev->vram_base, | |
214 | (unsigned long)qdev->vram_base + qdev->rom->ram_header_offset); | |
215 | qdev->surfaces_mem_slot = setup_slot(qdev, 1, | |
216 | (unsigned long)qdev->surfaceram_base, | |
217 | (unsigned long)qdev->surfaceram_base + qdev->surfaceram_size); | |
218 | DRM_INFO("main mem slot %d [%lx,%x)\n", | |
219 | qdev->main_mem_slot, | |
220 | (unsigned long)qdev->vram_base, qdev->rom->ram_header_offset); | |
221 | ||
222 | ||
223 | qdev->gc_queue = create_singlethread_workqueue("qxl_gc"); | |
224 | INIT_WORK(&qdev->gc_work, qxl_gc_work); | |
225 | ||
226 | r = qxl_fb_init(qdev); | |
227 | if (r) | |
228 | return r; | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
233 | void qxl_device_fini(struct qxl_device *qdev) | |
234 | { | |
235 | if (qdev->current_release_bo[0]) | |
236 | qxl_bo_unref(&qdev->current_release_bo[0]); | |
237 | if (qdev->current_release_bo[1]) | |
238 | qxl_bo_unref(&qdev->current_release_bo[1]); | |
239 | flush_workqueue(qdev->gc_queue); | |
240 | destroy_workqueue(qdev->gc_queue); | |
241 | qdev->gc_queue = NULL; | |
242 | ||
243 | qxl_ring_free(qdev->command_ring); | |
244 | qxl_ring_free(qdev->cursor_ring); | |
245 | qxl_ring_free(qdev->release_ring); | |
246 | qxl_bo_fini(qdev); | |
247 | io_mapping_free(qdev->surface_mapping); | |
248 | io_mapping_free(qdev->vram_mapping); | |
249 | iounmap(qdev->ram_header); | |
250 | iounmap(qdev->rom); | |
251 | qdev->rom = NULL; | |
252 | qdev->mode_info.modes = NULL; | |
253 | qdev->mode_info.num_modes = 0; | |
254 | qxl_debugfs_remove_files(qdev); | |
255 | } | |
256 | ||
257 | int qxl_driver_unload(struct drm_device *dev) | |
258 | { | |
259 | struct qxl_device *qdev = dev->dev_private; | |
260 | ||
261 | if (qdev == NULL) | |
262 | return 0; | |
263 | qxl_modeset_fini(qdev); | |
264 | qxl_device_fini(qdev); | |
265 | ||
266 | kfree(qdev); | |
267 | dev->dev_private = NULL; | |
268 | return 0; | |
269 | } | |
270 | ||
271 | int qxl_driver_load(struct drm_device *dev, unsigned long flags) | |
272 | { | |
273 | struct qxl_device *qdev; | |
274 | int r; | |
275 | ||
276 | /* require kms */ | |
277 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
278 | return -ENODEV; | |
279 | ||
280 | qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL); | |
281 | if (qdev == NULL) | |
282 | return -ENOMEM; | |
283 | ||
284 | dev->dev_private = qdev; | |
285 | ||
286 | r = qxl_device_init(qdev, dev, dev->pdev, flags); | |
287 | if (r) | |
288 | goto out; | |
289 | ||
290 | r = qxl_modeset_init(qdev); | |
291 | if (r) { | |
292 | qxl_driver_unload(dev); | |
293 | goto out; | |
294 | } | |
295 | ||
296 | return 0; | |
297 | out: | |
298 | kfree(qdev); | |
299 | return r; | |
300 | } | |
301 | ||
302 |