1 // SPDX-License-Identifier: GPL-2.0-only
2 /**************************************************************************
3 * Copyright (c) 2007-2011, Intel Corporation.
4 * All Rights Reserved.
5 * Copyright (c) 2008, Tungsten Graphics, Inc. Cedar Park, TX., USA.
6 * All Rights Reserved.
7 *
8 **************************************************************************/
9
10 #include <linux/aperture.h>
11 #include <linux/cpu.h>
12 #include <linux/module.h>
13 #include <linux/notifier.h>
14 #include <linux/pm_runtime.h>
15 #include <linux/spinlock.h>
16 #include <linux/delay.h>
17
18 #include <asm/set_memory.h>
19
20 #include <acpi/video.h>
21
22 #include <drm/drm.h>
23 #include <drm/drm_drv.h>
24 #include <drm/drm_file.h>
25 #include <drm/drm_ioctl.h>
26 #include <drm/drm_pciids.h>
27 #include <drm/drm_vblank.h>
28
29 #include "framebuffer.h"
30 #include "gem.h"
31 #include "intel_bios.h"
32 #include "mid_bios.h"
33 #include "power.h"
34 #include "psb_drv.h"
35 #include "psb_intel_reg.h"
36 #include "psb_irq.h"
37 #include "psb_reg.h"
38
39 static const struct drm_driver driver;
40 static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
41
42 /*
43 * The table below contains a mapping of the PCI vendor ID and the PCI Device ID
44 * to the different groups of PowerVR 5-series chip designs
45 *
46 * 0x8086 = Intel Corporation
47 *
48 * PowerVR SGX535 - Poulsbo - Intel GMA 500, Intel Atom Z5xx
49 * PowerVR SGX535 - Moorestown - Intel GMA 600
50 * PowerVR SGX535 - Oaktrail - Intel GMA 600, Intel Atom Z6xx, E6xx
51 * PowerVR SGX545 - Cedartrail - Intel GMA 3600, Intel Atom D2500, N2600
52 * PowerVR SGX545 - Cedartrail - Intel GMA 3650, Intel Atom D2550, D2700,
53 * N2800
54 */
55 static const struct pci_device_id pciidlist[] = {
56 /* Poulsbo */
57 { 0x8086, 0x8108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops },
58 { 0x8086, 0x8109, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops },
59 /* Oak Trail */
60 { 0x8086, 0x4100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
61 { 0x8086, 0x4101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
62 { 0x8086, 0x4102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
63 { 0x8086, 0x4103, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
64 { 0x8086, 0x4104, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
65 { 0x8086, 0x4105, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
66 { 0x8086, 0x4106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
67 { 0x8086, 0x4107, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
68 { 0x8086, 0x4108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
69 /* Cedar Trail */
70 { 0x8086, 0x0be0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
71 { 0x8086, 0x0be1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
72 { 0x8086, 0x0be2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
73 { 0x8086, 0x0be3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
74 { 0x8086, 0x0be4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
75 { 0x8086, 0x0be5, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
76 { 0x8086, 0x0be6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
77 { 0x8086, 0x0be7, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
78 { 0x8086, 0x0be8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
79 { 0x8086, 0x0be9, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
80 { 0x8086, 0x0bea, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
81 { 0x8086, 0x0beb, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
82 { 0x8086, 0x0bec, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
83 { 0x8086, 0x0bed, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
84 { 0x8086, 0x0bee, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
85 { 0x8086, 0x0bef, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
86 { 0, }
87 };
88 MODULE_DEVICE_TABLE(pci, pciidlist);
89
90 /*
91 * Standard IOCTLs.
92 */
93 static const struct drm_ioctl_desc psb_ioctls[] = {
94 };
95
96 /**
97 * psb_spank - reset the 2D engine
98 * @dev_priv: our PSB DRM device
99 *
100 * Soft reset the graphics engine and then reload the necessary registers.
101 */
psb_spank(struct drm_psb_private * dev_priv)102 static void psb_spank(struct drm_psb_private *dev_priv)
103 {
104 PSB_WSGX32(_PSB_CS_RESET_BIF_RESET | _PSB_CS_RESET_DPM_RESET |
105 _PSB_CS_RESET_TA_RESET | _PSB_CS_RESET_USE_RESET |
106 _PSB_CS_RESET_ISP_RESET | _PSB_CS_RESET_TSP_RESET |
107 _PSB_CS_RESET_TWOD_RESET, PSB_CR_SOFT_RESET);
108 PSB_RSGX32(PSB_CR_SOFT_RESET);
109
110 msleep(1);
111
112 PSB_WSGX32(0, PSB_CR_SOFT_RESET);
113 wmb();
114 PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) | _PSB_CB_CTRL_CLEAR_FAULT,
115 PSB_CR_BIF_CTRL);
116 wmb();
117 (void) PSB_RSGX32(PSB_CR_BIF_CTRL);
118
119 msleep(1);
120 PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_CB_CTRL_CLEAR_FAULT,
121 PSB_CR_BIF_CTRL);
122 (void) PSB_RSGX32(PSB_CR_BIF_CTRL);
123 PSB_WSGX32(dev_priv->gtt.gatt_start, PSB_CR_BIF_TWOD_REQ_BASE);
124 }
125
psb_do_init(struct drm_device * dev)126 static int psb_do_init(struct drm_device *dev)
127 {
128 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
129 struct psb_gtt *pg = &dev_priv->gtt;
130
131 uint32_t stolen_gtt;
132
133 if (pg->mmu_gatt_start & 0x0FFFFFFF) {
134 dev_err(dev->dev, "Gatt must be 256M aligned. This is a bug.\n");
135 return -EINVAL;
136 }
137
138 stolen_gtt = (pg->stolen_size >> PAGE_SHIFT) * 4;
139 stolen_gtt = (stolen_gtt + PAGE_SIZE - 1) >> PAGE_SHIFT;
140 stolen_gtt = (stolen_gtt < pg->gtt_pages) ? stolen_gtt : pg->gtt_pages;
141
142 dev_priv->gatt_free_offset = pg->mmu_gatt_start +
143 (stolen_gtt << PAGE_SHIFT) * 1024;
144
145 spin_lock_init(&dev_priv->irqmask_lock);
146
147 PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK0);
148 PSB_WSGX32(0x00000000, PSB_CR_BIF_BANK1);
149 PSB_RSGX32(PSB_CR_BIF_BANK1);
150
151 /* Do not bypass any MMU access, let them pagefault instead */
152 PSB_WSGX32((PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_MMU_ER_MASK),
153 PSB_CR_BIF_CTRL);
154 PSB_RSGX32(PSB_CR_BIF_CTRL);
155
156 psb_spank(dev_priv);
157
158 /* mmu_gatt ?? */
159 PSB_WSGX32(pg->gatt_start, PSB_CR_BIF_TWOD_REQ_BASE);
160 PSB_RSGX32(PSB_CR_BIF_TWOD_REQ_BASE); /* Post */
161
162 return 0;
163 }
164
psb_driver_unload(struct drm_device * dev)165 static void psb_driver_unload(struct drm_device *dev)
166 {
167 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
168
169 /* TODO: Kill vblank etc here */
170
171 gma_backlight_exit(dev);
172 psb_modeset_cleanup(dev);
173
174 gma_irq_uninstall(dev);
175
176 if (dev_priv->ops->chip_teardown)
177 dev_priv->ops->chip_teardown(dev);
178
179 psb_intel_opregion_fini(dev);
180
181 if (dev_priv->pf_pd) {
182 psb_mmu_free_pagedir(dev_priv->pf_pd);
183 dev_priv->pf_pd = NULL;
184 }
185 if (dev_priv->mmu) {
186 struct psb_gtt *pg = &dev_priv->gtt;
187
188 psb_mmu_remove_pfn_sequence(
189 psb_mmu_get_default_pd
190 (dev_priv->mmu),
191 pg->mmu_gatt_start,
192 dev_priv->vram_stolen_size >> PAGE_SHIFT);
193 psb_mmu_driver_takedown(dev_priv->mmu);
194 dev_priv->mmu = NULL;
195 }
196 psb_gem_mm_fini(dev);
197 psb_gtt_fini(dev);
198 if (dev_priv->scratch_page) {
199 set_pages_wb(dev_priv->scratch_page, 1);
200 __free_page(dev_priv->scratch_page);
201 dev_priv->scratch_page = NULL;
202 }
203 if (dev_priv->vdc_reg) {
204 iounmap(dev_priv->vdc_reg);
205 dev_priv->vdc_reg = NULL;
206 }
207 if (dev_priv->sgx_reg) {
208 iounmap(dev_priv->sgx_reg);
209 dev_priv->sgx_reg = NULL;
210 }
211 if (dev_priv->aux_reg) {
212 iounmap(dev_priv->aux_reg);
213 dev_priv->aux_reg = NULL;
214 }
215 pci_dev_put(dev_priv->aux_pdev);
216 pci_dev_put(dev_priv->lpc_pdev);
217
218 /* Destroy VBT data */
219 psb_intel_destroy_bios(dev);
220
221 gma_power_uninit(dev);
222 }
223
psb_device_release(void * data)224 static void psb_device_release(void *data)
225 {
226 struct drm_device *dev = data;
227
228 psb_driver_unload(dev);
229 }
230
psb_driver_load(struct drm_device * dev,unsigned long flags)231 static int psb_driver_load(struct drm_device *dev, unsigned long flags)
232 {
233 struct pci_dev *pdev = to_pci_dev(dev->dev);
234 struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
235 unsigned long resource_start, resource_len;
236 unsigned long irqflags;
237 struct drm_connector_list_iter conn_iter;
238 struct drm_connector *connector;
239 struct gma_encoder *gma_encoder;
240 struct psb_gtt *pg;
241 int ret = -ENOMEM;
242
243 /* initializing driver private data */
244
245 dev_priv->ops = (struct psb_ops *)flags;
246
247 pg = &dev_priv->gtt;
248
249 pci_set_master(pdev);
250
251 dev_priv->num_pipe = dev_priv->ops->pipes;
252
253 resource_start = pci_resource_start(pdev, PSB_MMIO_RESOURCE);
254
255 dev_priv->vdc_reg =
256 ioremap(resource_start + PSB_VDC_OFFSET, PSB_VDC_SIZE);
257 if (!dev_priv->vdc_reg)
258 goto out_err;
259
260 dev_priv->sgx_reg = ioremap(resource_start + dev_priv->ops->sgx_offset,
261 PSB_SGX_SIZE);
262 if (!dev_priv->sgx_reg)
263 goto out_err;
264
265 if (IS_MRST(dev)) {
266 int domain = pci_domain_nr(pdev->bus);
267
268 dev_priv->aux_pdev =
269 pci_get_domain_bus_and_slot(domain, 0,
270 PCI_DEVFN(3, 0));
271
272 if (dev_priv->aux_pdev) {
273 resource_start = pci_resource_start(dev_priv->aux_pdev,
274 PSB_AUX_RESOURCE);
275 resource_len = pci_resource_len(dev_priv->aux_pdev,
276 PSB_AUX_RESOURCE);
277 dev_priv->aux_reg = ioremap(resource_start,
278 resource_len);
279 if (!dev_priv->aux_reg)
280 goto out_err;
281
282 DRM_DEBUG_KMS("Found aux vdc");
283 } else {
284 /* Couldn't find the aux vdc so map to primary vdc */
285 dev_priv->aux_reg = dev_priv->vdc_reg;
286 DRM_DEBUG_KMS("Couldn't find aux pci device");
287 }
288 dev_priv->gmbus_reg = dev_priv->aux_reg;
289
290 dev_priv->lpc_pdev =
291 pci_get_domain_bus_and_slot(domain, 0,
292 PCI_DEVFN(31, 0));
293 if (dev_priv->lpc_pdev) {
294 pci_read_config_word(dev_priv->lpc_pdev, PSB_LPC_GBA,
295 &dev_priv->lpc_gpio_base);
296 pci_write_config_dword(dev_priv->lpc_pdev, PSB_LPC_GBA,
297 (u32)dev_priv->lpc_gpio_base | (1L<<31));
298 pci_read_config_word(dev_priv->lpc_pdev, PSB_LPC_GBA,
299 &dev_priv->lpc_gpio_base);
300 dev_priv->lpc_gpio_base &= 0xffc0;
301 if (dev_priv->lpc_gpio_base)
302 DRM_DEBUG_KMS("Found LPC GPIO at 0x%04x\n",
303 dev_priv->lpc_gpio_base);
304 else {
305 pci_dev_put(dev_priv->lpc_pdev);
306 dev_priv->lpc_pdev = NULL;
307 }
308 }
309 } else {
310 dev_priv->gmbus_reg = dev_priv->vdc_reg;
311 }
312
313 psb_intel_opregion_setup(dev);
314
315 ret = dev_priv->ops->chip_setup(dev);
316 if (ret)
317 goto out_err;
318
319 /* Init OSPM support */
320 gma_power_init(dev);
321
322 ret = -ENOMEM;
323
324 dev_priv->scratch_page = alloc_page(GFP_DMA32 | __GFP_ZERO);
325 if (!dev_priv->scratch_page)
326 goto out_err;
327
328 set_pages_uc(dev_priv->scratch_page, 1);
329
330 ret = psb_gtt_init(dev);
331 if (ret)
332 goto out_err;
333 ret = psb_gem_mm_init(dev);
334 if (ret)
335 goto out_err;
336
337 ret = -ENOMEM;
338
339 dev_priv->mmu = psb_mmu_driver_init(dev, 1, 0, NULL);
340 if (!dev_priv->mmu)
341 goto out_err;
342
343 dev_priv->pf_pd = psb_mmu_alloc_pd(dev_priv->mmu, 1, 0);
344 if (!dev_priv->pf_pd)
345 goto out_err;
346
347 ret = psb_do_init(dev);
348 if (ret)
349 return ret;
350
351 /* Add stolen memory to SGX MMU */
352 ret = psb_mmu_insert_pfn_sequence(psb_mmu_get_default_pd(dev_priv->mmu),
353 dev_priv->stolen_base >> PAGE_SHIFT,
354 pg->gatt_start,
355 pg->stolen_size >> PAGE_SHIFT, 0);
356
357 psb_mmu_set_pd_context(psb_mmu_get_default_pd(dev_priv->mmu), 0);
358 psb_mmu_set_pd_context(dev_priv->pf_pd, 1);
359
360 PSB_WSGX32(0x20000000, PSB_CR_PDS_EXEC_BASE);
361 PSB_WSGX32(0x30000000, PSB_CR_BIF_3D_REQ_BASE);
362
363 acpi_video_register();
364
365 /* Setup vertical blanking handling */
366 ret = drm_vblank_init(dev, dev_priv->num_pipe);
367 if (ret)
368 goto out_err;
369
370 /*
371 * Install interrupt handlers prior to powering off SGX or else we will
372 * crash.
373 */
374 dev_priv->vdc_irq_mask = 0;
375 dev_priv->pipestat[0] = 0;
376 dev_priv->pipestat[1] = 0;
377 dev_priv->pipestat[2] = 0;
378 spin_lock_irqsave(&dev_priv->irqmask_lock, irqflags);
379 PSB_WVDC32(0xFFFFFFFF, PSB_HWSTAM);
380 PSB_WVDC32(0x00000000, PSB_INT_ENABLE_R);
381 PSB_WVDC32(0xFFFFFFFF, PSB_INT_MASK_R);
382 spin_unlock_irqrestore(&dev_priv->irqmask_lock, irqflags);
383
384 gma_irq_install(dev);
385
386 dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
387
388 psb_modeset_init(dev);
389 drm_kms_helper_poll_init(dev);
390
391 /* Only add backlight support if we have LVDS or MIPI output */
392 drm_connector_list_iter_begin(dev, &conn_iter);
393 drm_for_each_connector_iter(connector, &conn_iter) {
394 gma_encoder = gma_attached_encoder(connector);
395
396 if (gma_encoder->type == INTEL_OUTPUT_LVDS ||
397 gma_encoder->type == INTEL_OUTPUT_MIPI) {
398 ret = gma_backlight_init(dev);
399 if (ret == 0)
400 acpi_video_register_backlight();
401 break;
402 }
403 }
404 drm_connector_list_iter_end(&conn_iter);
405
406 if (ret)
407 return ret;
408 psb_intel_opregion_enable_asle(dev);
409
410 return devm_add_action_or_reset(dev->dev, psb_device_release, dev);
411
412 out_err:
413 psb_driver_unload(dev);
414 return ret;
415 }
416
417 /*
418 * Hardware for gma500 is a hybrid device, which both acts as a PCI
419 * device (for legacy vga functionality) but also more like an
420 * integrated display on a SoC where the framebuffer simply
421 * resides in main memory and not in a special PCI bar (that
422 * internally redirects to a stolen range of main memory) like all
423 * other integrated PCI display devices implement it.
424 *
425 * To catch all cases we need to remove conflicting firmware devices
426 * for the stolen system memory and for the VGA functionality. As we
427 * currently cannot easily find the framebuffer's location in stolen
428 * memory, we remove all framebuffers here.
429 *
430 * TODO: Refactor psb_driver_load() to map vdc_reg earlier. Then
431 * we might be able to read the framebuffer range from the
432 * device.
433 */
gma_remove_conflicting_framebuffers(struct pci_dev * pdev,const struct drm_driver * req_driver)434 static int gma_remove_conflicting_framebuffers(struct pci_dev *pdev,
435 const struct drm_driver *req_driver)
436 {
437 resource_size_t base = 0;
438 resource_size_t size = U32_MAX; /* 4 GiB HW limit */
439 const char *name = req_driver->name;
440 int ret;
441
442 ret = aperture_remove_conflicting_devices(base, size, name);
443 if (ret)
444 return ret;
445
446 return __aperture_remove_legacy_vga_devices(pdev);
447 }
448
psb_pci_probe(struct pci_dev * pdev,const struct pci_device_id * ent)449 static int psb_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
450 {
451 struct drm_psb_private *dev_priv;
452 struct drm_device *dev;
453 int ret;
454
455 ret = gma_remove_conflicting_framebuffers(pdev, &driver);
456 if (ret)
457 return ret;
458
459 ret = pcim_enable_device(pdev);
460 if (ret)
461 return ret;
462
463 dev_priv = devm_drm_dev_alloc(&pdev->dev, &driver, struct drm_psb_private, dev);
464 if (IS_ERR(dev_priv))
465 return PTR_ERR(dev_priv);
466 dev = &dev_priv->dev;
467
468 pci_set_drvdata(pdev, dev);
469
470 ret = psb_driver_load(dev, ent->driver_data);
471 if (ret)
472 return ret;
473
474 ret = drm_dev_register(dev, ent->driver_data);
475 if (ret)
476 return ret;
477
478 psb_fbdev_setup(dev_priv);
479
480 return 0;
481 }
482
psb_pci_remove(struct pci_dev * pdev)483 static void psb_pci_remove(struct pci_dev *pdev)
484 {
485 struct drm_device *dev = pci_get_drvdata(pdev);
486
487 drm_dev_unregister(dev);
488 }
489
490 static DEFINE_RUNTIME_DEV_PM_OPS(psb_pm_ops, gma_power_suspend, gma_power_resume, NULL);
491
492 static const struct file_operations psb_gem_fops = {
493 .owner = THIS_MODULE,
494 .open = drm_open,
495 .release = drm_release,
496 .unlocked_ioctl = drm_ioctl,
497 .compat_ioctl = drm_compat_ioctl,
498 .mmap = drm_gem_mmap,
499 .poll = drm_poll,
500 .read = drm_read,
501 .fop_flags = FOP_UNSIGNED_OFFSET,
502 };
503
504 static const struct drm_driver driver = {
505 .driver_features = DRIVER_MODESET | DRIVER_GEM,
506
507 .num_ioctls = ARRAY_SIZE(psb_ioctls),
508
509 .dumb_create = psb_gem_dumb_create,
510 .ioctls = psb_ioctls,
511 .fops = &psb_gem_fops,
512 .name = DRIVER_NAME,
513 .desc = DRIVER_DESC,
514 .date = DRIVER_DATE,
515 .major = DRIVER_MAJOR,
516 .minor = DRIVER_MINOR,
517 .patchlevel = DRIVER_PATCHLEVEL
518 };
519
520 static struct pci_driver psb_pci_driver = {
521 .name = DRIVER_NAME,
522 .id_table = pciidlist,
523 .probe = psb_pci_probe,
524 .remove = psb_pci_remove,
525 .driver.pm = &psb_pm_ops,
526 };
527
psb_init(void)528 static int __init psb_init(void)
529 {
530 if (drm_firmware_drivers_only())
531 return -ENODEV;
532
533 return pci_register_driver(&psb_pci_driver);
534 }
535
psb_exit(void)536 static void __exit psb_exit(void)
537 {
538 pci_unregister_driver(&psb_pci_driver);
539 }
540
541 late_initcall(psb_init);
542 module_exit(psb_exit);
543
544 MODULE_AUTHOR(DRIVER_AUTHOR);
545 MODULE_DESCRIPTION(DRIVER_DESC);
546 MODULE_LICENSE("GPL");
547