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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); | |
970fa986 DA |
131 | DRM_DEBUG_KMS("qxl: vram %llx-%llx(%dM %dk), surface %llx-%llx(%dM %dk)\n", |
132 | (unsigned long long)qdev->vram_base, | |
133 | (unsigned long long)pci_resource_end(pdev, 0), | |
f64122c1 DA |
134 | (int)pci_resource_len(pdev, 0) / 1024 / 1024, |
135 | (int)pci_resource_len(pdev, 0) / 1024, | |
970fa986 DA |
136 | (unsigned long long)qdev->surfaceram_base, |
137 | (unsigned long long)pci_resource_end(pdev, 1), | |
f64122c1 DA |
138 | (int)qdev->surfaceram_size / 1024 / 1024, |
139 | (int)qdev->surfaceram_size / 1024); | |
140 | ||
141 | qdev->rom = ioremap(qdev->rom_base, qdev->rom_size); | |
142 | if (!qdev->rom) { | |
143 | pr_err("Unable to ioremap ROM\n"); | |
144 | return -ENOMEM; | |
145 | } | |
146 | ||
147 | qxl_check_device(qdev); | |
148 | ||
149 | r = qxl_bo_init(qdev); | |
150 | if (r) { | |
151 | DRM_ERROR("bo init failed %d\n", r); | |
152 | return r; | |
153 | } | |
154 | ||
155 | qdev->ram_header = ioremap(qdev->vram_base + | |
156 | qdev->rom->ram_header_offset, | |
157 | sizeof(*qdev->ram_header)); | |
158 | ||
159 | qdev->command_ring = qxl_ring_create(&(qdev->ram_header->cmd_ring_hdr), | |
160 | sizeof(struct qxl_command), | |
161 | QXL_COMMAND_RING_SIZE, | |
162 | qdev->io_base + QXL_IO_NOTIFY_CMD, | |
163 | false, | |
164 | &qdev->display_event); | |
165 | ||
166 | qdev->cursor_ring = qxl_ring_create( | |
167 | &(qdev->ram_header->cursor_ring_hdr), | |
168 | sizeof(struct qxl_command), | |
169 | QXL_CURSOR_RING_SIZE, | |
170 | qdev->io_base + QXL_IO_NOTIFY_CMD, | |
171 | false, | |
172 | &qdev->cursor_event); | |
173 | ||
174 | qdev->release_ring = qxl_ring_create( | |
175 | &(qdev->ram_header->release_ring_hdr), | |
176 | sizeof(uint64_t), | |
177 | QXL_RELEASE_RING_SIZE, 0, true, | |
178 | NULL); | |
179 | ||
180 | /* TODO - slot initialization should happen on reset. where is our | |
181 | * reset handler? */ | |
182 | qdev->n_mem_slots = qdev->rom->slots_end; | |
183 | qdev->slot_gen_bits = qdev->rom->slot_gen_bits; | |
184 | qdev->slot_id_bits = qdev->rom->slot_id_bits; | |
185 | qdev->va_slot_mask = | |
186 | (~(uint64_t)0) >> (qdev->slot_id_bits + qdev->slot_gen_bits); | |
187 | ||
188 | qdev->mem_slots = | |
189 | kmalloc(qdev->n_mem_slots * sizeof(struct qxl_memslot), | |
190 | GFP_KERNEL); | |
191 | ||
192 | idr_init(&qdev->release_idr); | |
193 | spin_lock_init(&qdev->release_idr_lock); | |
194 | ||
195 | idr_init(&qdev->surf_id_idr); | |
196 | spin_lock_init(&qdev->surf_id_idr_lock); | |
197 | ||
198 | mutex_init(&qdev->async_io_mutex); | |
199 | ||
200 | /* reset the device into a known state - no memslots, no primary | |
201 | * created, no surfaces. */ | |
202 | qxl_io_reset(qdev); | |
203 | ||
204 | /* must initialize irq before first async io - slot creation */ | |
205 | r = qxl_irq_init(qdev); | |
206 | if (r) | |
207 | return r; | |
208 | ||
209 | /* | |
210 | * Note that virtual is surface0. We rely on the single ioremap done | |
211 | * before. | |
212 | */ | |
213 | qdev->main_mem_slot = setup_slot(qdev, 0, | |
214 | (unsigned long)qdev->vram_base, | |
215 | (unsigned long)qdev->vram_base + qdev->rom->ram_header_offset); | |
216 | qdev->surfaces_mem_slot = setup_slot(qdev, 1, | |
217 | (unsigned long)qdev->surfaceram_base, | |
218 | (unsigned long)qdev->surfaceram_base + qdev->surfaceram_size); | |
219 | DRM_INFO("main mem slot %d [%lx,%x)\n", | |
220 | qdev->main_mem_slot, | |
221 | (unsigned long)qdev->vram_base, qdev->rom->ram_header_offset); | |
222 | ||
223 | ||
224 | qdev->gc_queue = create_singlethread_workqueue("qxl_gc"); | |
225 | INIT_WORK(&qdev->gc_work, qxl_gc_work); | |
226 | ||
227 | r = qxl_fb_init(qdev); | |
228 | if (r) | |
229 | return r; | |
230 | ||
231 | return 0; | |
232 | } | |
233 | ||
6d01f1f5 | 234 | static void qxl_device_fini(struct qxl_device *qdev) |
f64122c1 DA |
235 | { |
236 | if (qdev->current_release_bo[0]) | |
237 | qxl_bo_unref(&qdev->current_release_bo[0]); | |
238 | if (qdev->current_release_bo[1]) | |
239 | qxl_bo_unref(&qdev->current_release_bo[1]); | |
240 | flush_workqueue(qdev->gc_queue); | |
241 | destroy_workqueue(qdev->gc_queue); | |
242 | qdev->gc_queue = NULL; | |
243 | ||
244 | qxl_ring_free(qdev->command_ring); | |
245 | qxl_ring_free(qdev->cursor_ring); | |
246 | qxl_ring_free(qdev->release_ring); | |
247 | qxl_bo_fini(qdev); | |
248 | io_mapping_free(qdev->surface_mapping); | |
249 | io_mapping_free(qdev->vram_mapping); | |
250 | iounmap(qdev->ram_header); | |
251 | iounmap(qdev->rom); | |
252 | qdev->rom = NULL; | |
253 | qdev->mode_info.modes = NULL; | |
254 | qdev->mode_info.num_modes = 0; | |
255 | qxl_debugfs_remove_files(qdev); | |
256 | } | |
257 | ||
258 | int qxl_driver_unload(struct drm_device *dev) | |
259 | { | |
260 | struct qxl_device *qdev = dev->dev_private; | |
261 | ||
262 | if (qdev == NULL) | |
263 | return 0; | |
264 | qxl_modeset_fini(qdev); | |
265 | qxl_device_fini(qdev); | |
266 | ||
267 | kfree(qdev); | |
268 | dev->dev_private = NULL; | |
269 | return 0; | |
270 | } | |
271 | ||
272 | int qxl_driver_load(struct drm_device *dev, unsigned long flags) | |
273 | { | |
274 | struct qxl_device *qdev; | |
275 | int r; | |
276 | ||
277 | /* require kms */ | |
278 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
279 | return -ENODEV; | |
280 | ||
281 | qdev = kzalloc(sizeof(struct qxl_device), GFP_KERNEL); | |
282 | if (qdev == NULL) | |
283 | return -ENOMEM; | |
284 | ||
285 | dev->dev_private = qdev; | |
286 | ||
287 | r = qxl_device_init(qdev, dev, dev->pdev, flags); | |
288 | if (r) | |
289 | goto out; | |
290 | ||
291 | r = qxl_modeset_init(qdev); | |
292 | if (r) { | |
293 | qxl_driver_unload(dev); | |
294 | goto out; | |
295 | } | |
296 | ||
297 | return 0; | |
298 | out: | |
299 | kfree(qdev); | |
300 | return r; | |
301 | } | |
302 | ||
303 |