1 // SPDX-License-Identifier: GPL-2.0 OR MIT
2 /**************************************************************************
3  *
4  * Copyright 2009-2022 VMware, Inc., Palo Alto, CA., USA
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the
15  * next paragraph) shall be included in all copies or substantial portions
16  * of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24  * USE OR OTHER DEALINGS IN THE SOFTWARE.
25  *
26  **************************************************************************/
27 
28 #include <linux/dma-mapping.h>
29 #include <linux/module.h>
30 #include <linux/pci.h>
31 #include <linux/cc_platform.h>
32 
33 #include <drm/drm_aperture.h>
34 #include <drm/drm_drv.h>
35 #include <drm/drm_gem_ttm_helper.h>
36 #include <drm/drm_ioctl.h>
37 #include <drm/drm_module.h>
38 #include <drm/drm_sysfs.h>
39 #include <drm/ttm/ttm_bo_driver.h>
40 #include <drm/ttm/ttm_range_manager.h>
41 #include <drm/ttm/ttm_placement.h>
42 #include <generated/utsrelease.h>
43 
44 #include "ttm_object.h"
45 #include "vmwgfx_binding.h"
46 #include "vmwgfx_devcaps.h"
47 #include "vmwgfx_drv.h"
48 #include "vmwgfx_mksstat.h"
49 
50 #define VMWGFX_DRIVER_DESC "Linux drm driver for VMware graphics devices"
51 
52 #define VMW_MIN_INITIAL_WIDTH 800
53 #define VMW_MIN_INITIAL_HEIGHT 600
54 
55 /*
56  * Fully encoded drm commands. Might move to vmw_drm.h
57  */
58 
59 #define DRM_IOCTL_VMW_GET_PARAM					\
60 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GET_PARAM,		\
61 		 struct drm_vmw_getparam_arg)
62 #define DRM_IOCTL_VMW_ALLOC_DMABUF				\
63 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_ALLOC_DMABUF,	\
64 		union drm_vmw_alloc_dmabuf_arg)
65 #define DRM_IOCTL_VMW_UNREF_DMABUF				\
66 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_DMABUF,	\
67 		struct drm_vmw_unref_dmabuf_arg)
68 #define DRM_IOCTL_VMW_CURSOR_BYPASS				\
69 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CURSOR_BYPASS,	\
70 		 struct drm_vmw_cursor_bypass_arg)
71 
72 #define DRM_IOCTL_VMW_CONTROL_STREAM				\
73 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_CONTROL_STREAM,	\
74 		 struct drm_vmw_control_stream_arg)
75 #define DRM_IOCTL_VMW_CLAIM_STREAM				\
76 	DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CLAIM_STREAM,	\
77 		 struct drm_vmw_stream_arg)
78 #define DRM_IOCTL_VMW_UNREF_STREAM				\
79 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_STREAM,	\
80 		 struct drm_vmw_stream_arg)
81 
82 #define DRM_IOCTL_VMW_CREATE_CONTEXT				\
83 	DRM_IOR(DRM_COMMAND_BASE + DRM_VMW_CREATE_CONTEXT,	\
84 		struct drm_vmw_context_arg)
85 #define DRM_IOCTL_VMW_UNREF_CONTEXT				\
86 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_CONTEXT,	\
87 		struct drm_vmw_context_arg)
88 #define DRM_IOCTL_VMW_CREATE_SURFACE				\
89 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SURFACE,	\
90 		 union drm_vmw_surface_create_arg)
91 #define DRM_IOCTL_VMW_UNREF_SURFACE				\
92 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SURFACE,	\
93 		 struct drm_vmw_surface_arg)
94 #define DRM_IOCTL_VMW_REF_SURFACE				\
95 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_REF_SURFACE,	\
96 		 union drm_vmw_surface_reference_arg)
97 #define DRM_IOCTL_VMW_EXECBUF					\
98 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_EXECBUF,		\
99 		struct drm_vmw_execbuf_arg)
100 #define DRM_IOCTL_VMW_GET_3D_CAP				\
101 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_GET_3D_CAP,		\
102 		 struct drm_vmw_get_3d_cap_arg)
103 #define DRM_IOCTL_VMW_FENCE_WAIT				\
104 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_WAIT,		\
105 		 struct drm_vmw_fence_wait_arg)
106 #define DRM_IOCTL_VMW_FENCE_SIGNALED				\
107 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_FENCE_SIGNALED,	\
108 		 struct drm_vmw_fence_signaled_arg)
109 #define DRM_IOCTL_VMW_FENCE_UNREF				\
110 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_UNREF,		\
111 		 struct drm_vmw_fence_arg)
112 #define DRM_IOCTL_VMW_FENCE_EVENT				\
113 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_FENCE_EVENT,		\
114 		 struct drm_vmw_fence_event_arg)
115 #define DRM_IOCTL_VMW_PRESENT					\
116 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT,		\
117 		 struct drm_vmw_present_arg)
118 #define DRM_IOCTL_VMW_PRESENT_READBACK				\
119 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_PRESENT_READBACK,	\
120 		 struct drm_vmw_present_readback_arg)
121 #define DRM_IOCTL_VMW_UPDATE_LAYOUT				\
122 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT,	\
123 		 struct drm_vmw_update_layout_arg)
124 #define DRM_IOCTL_VMW_CREATE_SHADER				\
125 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_SHADER,	\
126 		 struct drm_vmw_shader_create_arg)
127 #define DRM_IOCTL_VMW_UNREF_SHADER				\
128 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_UNREF_SHADER,	\
129 		 struct drm_vmw_shader_arg)
130 #define DRM_IOCTL_VMW_GB_SURFACE_CREATE				\
131 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_CREATE,	\
132 		 union drm_vmw_gb_surface_create_arg)
133 #define DRM_IOCTL_VMW_GB_SURFACE_REF				\
134 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_REF,	\
135 		 union drm_vmw_gb_surface_reference_arg)
136 #define DRM_IOCTL_VMW_SYNCCPU					\
137 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_SYNCCPU,		\
138 		 struct drm_vmw_synccpu_arg)
139 #define DRM_IOCTL_VMW_CREATE_EXTENDED_CONTEXT			\
140 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_CREATE_EXTENDED_CONTEXT,	\
141 		struct drm_vmw_context_arg)
142 #define DRM_IOCTL_VMW_GB_SURFACE_CREATE_EXT				\
143 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_CREATE_EXT,	\
144 		union drm_vmw_gb_surface_create_ext_arg)
145 #define DRM_IOCTL_VMW_GB_SURFACE_REF_EXT				\
146 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_GB_SURFACE_REF_EXT,		\
147 		union drm_vmw_gb_surface_reference_ext_arg)
148 #define DRM_IOCTL_VMW_MSG						\
149 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_MSG,			\
150 		struct drm_vmw_msg_arg)
151 #define DRM_IOCTL_VMW_MKSSTAT_RESET				\
152 	DRM_IO(DRM_COMMAND_BASE + DRM_VMW_MKSSTAT_RESET)
153 #define DRM_IOCTL_VMW_MKSSTAT_ADD				\
154 	DRM_IOWR(DRM_COMMAND_BASE + DRM_VMW_MKSSTAT_ADD,	\
155 		struct drm_vmw_mksstat_add_arg)
156 #define DRM_IOCTL_VMW_MKSSTAT_REMOVE				\
157 	DRM_IOW(DRM_COMMAND_BASE + DRM_VMW_MKSSTAT_REMOVE,	\
158 		struct drm_vmw_mksstat_remove_arg)
159 
160 /*
161  * Ioctl definitions.
162  */
163 
164 static const struct drm_ioctl_desc vmw_ioctls[] = {
165 	DRM_IOCTL_DEF_DRV(VMW_GET_PARAM, vmw_getparam_ioctl,
166 			  DRM_RENDER_ALLOW),
167 	DRM_IOCTL_DEF_DRV(VMW_ALLOC_DMABUF, vmw_gem_object_create_ioctl,
168 			  DRM_RENDER_ALLOW),
169 	DRM_IOCTL_DEF_DRV(VMW_UNREF_DMABUF, vmw_bo_unref_ioctl,
170 			  DRM_RENDER_ALLOW),
171 	DRM_IOCTL_DEF_DRV(VMW_CURSOR_BYPASS,
172 			  vmw_kms_cursor_bypass_ioctl,
173 			  DRM_MASTER),
174 
175 	DRM_IOCTL_DEF_DRV(VMW_CONTROL_STREAM, vmw_overlay_ioctl,
176 			  DRM_MASTER),
177 	DRM_IOCTL_DEF_DRV(VMW_CLAIM_STREAM, vmw_stream_claim_ioctl,
178 			  DRM_MASTER),
179 	DRM_IOCTL_DEF_DRV(VMW_UNREF_STREAM, vmw_stream_unref_ioctl,
180 			  DRM_MASTER),
181 
182 	DRM_IOCTL_DEF_DRV(VMW_CREATE_CONTEXT, vmw_context_define_ioctl,
183 			  DRM_RENDER_ALLOW),
184 	DRM_IOCTL_DEF_DRV(VMW_UNREF_CONTEXT, vmw_context_destroy_ioctl,
185 			  DRM_RENDER_ALLOW),
186 	DRM_IOCTL_DEF_DRV(VMW_CREATE_SURFACE, vmw_surface_define_ioctl,
187 			  DRM_RENDER_ALLOW),
188 	DRM_IOCTL_DEF_DRV(VMW_UNREF_SURFACE, vmw_surface_destroy_ioctl,
189 			  DRM_RENDER_ALLOW),
190 	DRM_IOCTL_DEF_DRV(VMW_REF_SURFACE, vmw_surface_reference_ioctl,
191 			  DRM_RENDER_ALLOW),
192 	DRM_IOCTL_DEF_DRV(VMW_EXECBUF, vmw_execbuf_ioctl,
193 			  DRM_RENDER_ALLOW),
194 	DRM_IOCTL_DEF_DRV(VMW_FENCE_WAIT, vmw_fence_obj_wait_ioctl,
195 			  DRM_RENDER_ALLOW),
196 	DRM_IOCTL_DEF_DRV(VMW_FENCE_SIGNALED,
197 			  vmw_fence_obj_signaled_ioctl,
198 			  DRM_RENDER_ALLOW),
199 	DRM_IOCTL_DEF_DRV(VMW_FENCE_UNREF, vmw_fence_obj_unref_ioctl,
200 			  DRM_RENDER_ALLOW),
201 	DRM_IOCTL_DEF_DRV(VMW_FENCE_EVENT, vmw_fence_event_ioctl,
202 			  DRM_RENDER_ALLOW),
203 	DRM_IOCTL_DEF_DRV(VMW_GET_3D_CAP, vmw_get_cap_3d_ioctl,
204 			  DRM_RENDER_ALLOW),
205 
206 	/* these allow direct access to the framebuffers mark as master only */
207 	DRM_IOCTL_DEF_DRV(VMW_PRESENT, vmw_present_ioctl,
208 			  DRM_MASTER | DRM_AUTH),
209 	DRM_IOCTL_DEF_DRV(VMW_PRESENT_READBACK,
210 			  vmw_present_readback_ioctl,
211 			  DRM_MASTER | DRM_AUTH),
212 	/*
213 	 * The permissions of the below ioctl are overridden in
214 	 * vmw_generic_ioctl(). We require either
215 	 * DRM_MASTER or capable(CAP_SYS_ADMIN).
216 	 */
217 	DRM_IOCTL_DEF_DRV(VMW_UPDATE_LAYOUT,
218 			  vmw_kms_update_layout_ioctl,
219 			  DRM_RENDER_ALLOW),
220 	DRM_IOCTL_DEF_DRV(VMW_CREATE_SHADER,
221 			  vmw_shader_define_ioctl,
222 			  DRM_RENDER_ALLOW),
223 	DRM_IOCTL_DEF_DRV(VMW_UNREF_SHADER,
224 			  vmw_shader_destroy_ioctl,
225 			  DRM_RENDER_ALLOW),
226 	DRM_IOCTL_DEF_DRV(VMW_GB_SURFACE_CREATE,
227 			  vmw_gb_surface_define_ioctl,
228 			  DRM_RENDER_ALLOW),
229 	DRM_IOCTL_DEF_DRV(VMW_GB_SURFACE_REF,
230 			  vmw_gb_surface_reference_ioctl,
231 			  DRM_RENDER_ALLOW),
232 	DRM_IOCTL_DEF_DRV(VMW_SYNCCPU,
233 			  vmw_user_bo_synccpu_ioctl,
234 			  DRM_RENDER_ALLOW),
235 	DRM_IOCTL_DEF_DRV(VMW_CREATE_EXTENDED_CONTEXT,
236 			  vmw_extended_context_define_ioctl,
237 			  DRM_RENDER_ALLOW),
238 	DRM_IOCTL_DEF_DRV(VMW_GB_SURFACE_CREATE_EXT,
239 			  vmw_gb_surface_define_ext_ioctl,
240 			  DRM_RENDER_ALLOW),
241 	DRM_IOCTL_DEF_DRV(VMW_GB_SURFACE_REF_EXT,
242 			  vmw_gb_surface_reference_ext_ioctl,
243 			  DRM_RENDER_ALLOW),
244 	DRM_IOCTL_DEF_DRV(VMW_MSG,
245 			  vmw_msg_ioctl,
246 			  DRM_RENDER_ALLOW),
247 	DRM_IOCTL_DEF_DRV(VMW_MKSSTAT_RESET,
248 			  vmw_mksstat_reset_ioctl,
249 			  DRM_RENDER_ALLOW),
250 	DRM_IOCTL_DEF_DRV(VMW_MKSSTAT_ADD,
251 			  vmw_mksstat_add_ioctl,
252 			  DRM_RENDER_ALLOW),
253 	DRM_IOCTL_DEF_DRV(VMW_MKSSTAT_REMOVE,
254 			  vmw_mksstat_remove_ioctl,
255 			  DRM_RENDER_ALLOW),
256 };
257 
258 static const struct pci_device_id vmw_pci_id_list[] = {
259 	{ PCI_DEVICE(PCI_VENDOR_ID_VMWARE, VMWGFX_PCI_ID_SVGA2) },
260 	{ PCI_DEVICE(PCI_VENDOR_ID_VMWARE, VMWGFX_PCI_ID_SVGA3) },
261 	{ }
262 };
263 MODULE_DEVICE_TABLE(pci, vmw_pci_id_list);
264 
265 static int enable_fbdev = IS_ENABLED(CONFIG_DRM_VMWGFX_FBCON);
266 static int vmw_restrict_iommu;
267 static int vmw_force_coherent;
268 static int vmw_restrict_dma_mask;
269 static int vmw_assume_16bpp;
270 
271 static int vmw_probe(struct pci_dev *, const struct pci_device_id *);
272 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
273 			      void *ptr);
274 
275 MODULE_PARM_DESC(enable_fbdev, "Enable vmwgfx fbdev");
276 module_param_named(enable_fbdev, enable_fbdev, int, 0600);
277 MODULE_PARM_DESC(restrict_iommu, "Try to limit IOMMU usage for TTM pages");
278 module_param_named(restrict_iommu, vmw_restrict_iommu, int, 0600);
279 MODULE_PARM_DESC(force_coherent, "Force coherent TTM pages");
280 module_param_named(force_coherent, vmw_force_coherent, int, 0600);
281 MODULE_PARM_DESC(restrict_dma_mask, "Restrict DMA mask to 44 bits with IOMMU");
282 module_param_named(restrict_dma_mask, vmw_restrict_dma_mask, int, 0600);
283 MODULE_PARM_DESC(assume_16bpp, "Assume 16-bpp when filtering modes");
284 module_param_named(assume_16bpp, vmw_assume_16bpp, int, 0600);
285 
286 
287 struct bitmap_name {
288 	uint32 value;
289 	const char *name;
290 };
291 
292 static const struct bitmap_name cap1_names[] = {
293 	{ SVGA_CAP_RECT_COPY, "rect copy" },
294 	{ SVGA_CAP_CURSOR, "cursor" },
295 	{ SVGA_CAP_CURSOR_BYPASS, "cursor bypass" },
296 	{ SVGA_CAP_CURSOR_BYPASS_2, "cursor bypass 2" },
297 	{ SVGA_CAP_8BIT_EMULATION, "8bit emulation" },
298 	{ SVGA_CAP_ALPHA_CURSOR, "alpha cursor" },
299 	{ SVGA_CAP_3D, "3D" },
300 	{ SVGA_CAP_EXTENDED_FIFO, "extended fifo" },
301 	{ SVGA_CAP_MULTIMON, "multimon" },
302 	{ SVGA_CAP_PITCHLOCK, "pitchlock" },
303 	{ SVGA_CAP_IRQMASK, "irq mask" },
304 	{ SVGA_CAP_DISPLAY_TOPOLOGY, "display topology" },
305 	{ SVGA_CAP_GMR, "gmr" },
306 	{ SVGA_CAP_TRACES, "traces" },
307 	{ SVGA_CAP_GMR2, "gmr2" },
308 	{ SVGA_CAP_SCREEN_OBJECT_2, "screen object 2" },
309 	{ SVGA_CAP_COMMAND_BUFFERS, "command buffers" },
310 	{ SVGA_CAP_CMD_BUFFERS_2, "command buffers 2" },
311 	{ SVGA_CAP_GBOBJECTS, "gbobject" },
312 	{ SVGA_CAP_DX, "dx" },
313 	{ SVGA_CAP_HP_CMD_QUEUE, "hp cmd queue" },
314 	{ SVGA_CAP_NO_BB_RESTRICTION, "no bb restriction" },
315 	{ SVGA_CAP_CAP2_REGISTER, "cap2 register" },
316 };
317 
318 
319 static const struct bitmap_name cap2_names[] = {
320 	{ SVGA_CAP2_GROW_OTABLE, "grow otable" },
321 	{ SVGA_CAP2_INTRA_SURFACE_COPY, "intra surface copy" },
322 	{ SVGA_CAP2_DX2, "dx2" },
323 	{ SVGA_CAP2_GB_MEMSIZE_2, "gb memsize 2" },
324 	{ SVGA_CAP2_SCREENDMA_REG, "screendma reg" },
325 	{ SVGA_CAP2_OTABLE_PTDEPTH_2, "otable ptdepth2" },
326 	{ SVGA_CAP2_NON_MS_TO_MS_STRETCHBLT, "non ms to ms stretchblt" },
327 	{ SVGA_CAP2_CURSOR_MOB, "cursor mob" },
328 	{ SVGA_CAP2_MSHINT, "mshint" },
329 	{ SVGA_CAP2_CB_MAX_SIZE_4MB, "cb max size 4mb" },
330 	{ SVGA_CAP2_DX3, "dx3" },
331 	{ SVGA_CAP2_FRAME_TYPE, "frame type" },
332 	{ SVGA_CAP2_COTABLE_COPY, "cotable copy" },
333 	{ SVGA_CAP2_TRACE_FULL_FB, "trace full fb" },
334 	{ SVGA_CAP2_EXTRA_REGS, "extra regs" },
335 	{ SVGA_CAP2_LO_STAGING, "lo staging" },
336 };
337 
vmw_print_bitmap(struct drm_device * drm,const char * prefix,uint32_t bitmap,const struct bitmap_name * bnames,uint32_t num_names)338 static void vmw_print_bitmap(struct drm_device *drm,
339 			     const char *prefix, uint32_t bitmap,
340 			     const struct bitmap_name *bnames,
341 			     uint32_t num_names)
342 {
343 	char buf[512];
344 	uint32_t i;
345 	uint32_t offset = 0;
346 	for (i = 0; i < num_names; ++i) {
347 		if ((bitmap & bnames[i].value) != 0) {
348 			offset += snprintf(buf + offset,
349 					   ARRAY_SIZE(buf) - offset,
350 					   "%s, ", bnames[i].name);
351 			bitmap &= ~bnames[i].value;
352 		}
353 	}
354 
355 	drm_info(drm, "%s: %s\n", prefix, buf);
356 	if (bitmap != 0)
357 		drm_dbg(drm, "%s: unknown enums: %x\n", prefix, bitmap);
358 }
359 
360 
vmw_print_sm_type(struct vmw_private * dev_priv)361 static void vmw_print_sm_type(struct vmw_private *dev_priv)
362 {
363 	static const char *names[] = {
364 		[VMW_SM_LEGACY] = "Legacy",
365 		[VMW_SM_4] = "SM4",
366 		[VMW_SM_4_1] = "SM4_1",
367 		[VMW_SM_5] = "SM_5",
368 		[VMW_SM_5_1X] = "SM_5_1X",
369 		[VMW_SM_MAX] = "Invalid"
370 	};
371 	BUILD_BUG_ON(ARRAY_SIZE(names) != (VMW_SM_MAX + 1));
372 	drm_info(&dev_priv->drm, "Available shader model: %s.\n",
373 		 names[dev_priv->sm_type]);
374 }
375 
376 /**
377  * vmw_dummy_query_bo_create - create a bo to hold a dummy query result
378  *
379  * @dev_priv: A device private structure.
380  *
381  * This function creates a small buffer object that holds the query
382  * result for dummy queries emitted as query barriers.
383  * The function will then map the first page and initialize a pending
384  * occlusion query result structure, Finally it will unmap the buffer.
385  * No interruptible waits are done within this function.
386  *
387  * Returns an error if bo creation or initialization fails.
388  */
vmw_dummy_query_bo_create(struct vmw_private * dev_priv)389 static int vmw_dummy_query_bo_create(struct vmw_private *dev_priv)
390 {
391 	int ret;
392 	struct vmw_buffer_object *vbo;
393 	struct ttm_bo_kmap_obj map;
394 	volatile SVGA3dQueryResult *result;
395 	bool dummy;
396 
397 	/*
398 	 * Create the vbo as pinned, so that a tryreserve will
399 	 * immediately succeed. This is because we're the only
400 	 * user of the bo currently.
401 	 */
402 	ret = vmw_bo_create(dev_priv, PAGE_SIZE,
403 			    &vmw_sys_placement, false, true,
404 			    &vmw_bo_bo_free, &vbo);
405 	if (unlikely(ret != 0))
406 		return ret;
407 
408 	ret = ttm_bo_reserve(&vbo->base, false, true, NULL);
409 	BUG_ON(ret != 0);
410 	vmw_bo_pin_reserved(vbo, true);
411 
412 	ret = ttm_bo_kmap(&vbo->base, 0, 1, &map);
413 	if (likely(ret == 0)) {
414 		result = ttm_kmap_obj_virtual(&map, &dummy);
415 		result->totalSize = sizeof(*result);
416 		result->state = SVGA3D_QUERYSTATE_PENDING;
417 		result->result32 = 0xff;
418 		ttm_bo_kunmap(&map);
419 	}
420 	vmw_bo_pin_reserved(vbo, false);
421 	ttm_bo_unreserve(&vbo->base);
422 
423 	if (unlikely(ret != 0)) {
424 		DRM_ERROR("Dummy query buffer map failed.\n");
425 		vmw_bo_unreference(&vbo);
426 	} else
427 		dev_priv->dummy_query_bo = vbo;
428 
429 	return ret;
430 }
431 
vmw_device_init(struct vmw_private * dev_priv)432 static int vmw_device_init(struct vmw_private *dev_priv)
433 {
434 	bool uses_fb_traces = false;
435 
436 	dev_priv->enable_state = vmw_read(dev_priv, SVGA_REG_ENABLE);
437 	dev_priv->config_done_state = vmw_read(dev_priv, SVGA_REG_CONFIG_DONE);
438 	dev_priv->traces_state = vmw_read(dev_priv, SVGA_REG_TRACES);
439 
440 	vmw_write(dev_priv, SVGA_REG_ENABLE, SVGA_REG_ENABLE_ENABLE |
441 		  SVGA_REG_ENABLE_HIDE);
442 
443 	uses_fb_traces = !vmw_cmd_supported(dev_priv) &&
444 			 (dev_priv->capabilities & SVGA_CAP_TRACES) != 0;
445 
446 	vmw_write(dev_priv, SVGA_REG_TRACES, uses_fb_traces);
447 	dev_priv->fifo = vmw_fifo_create(dev_priv);
448 	if (IS_ERR(dev_priv->fifo)) {
449 		int err = PTR_ERR(dev_priv->fifo);
450 		dev_priv->fifo = NULL;
451 		return err;
452 	} else if (!dev_priv->fifo) {
453 		vmw_write(dev_priv, SVGA_REG_CONFIG_DONE, 1);
454 	}
455 
456 	dev_priv->last_read_seqno = vmw_fence_read(dev_priv);
457 	atomic_set(&dev_priv->marker_seq, dev_priv->last_read_seqno);
458 	return 0;
459 }
460 
vmw_device_fini(struct vmw_private * vmw)461 static void vmw_device_fini(struct vmw_private *vmw)
462 {
463 	/*
464 	 * Legacy sync
465 	 */
466 	vmw_write(vmw, SVGA_REG_SYNC, SVGA_SYNC_GENERIC);
467 	while (vmw_read(vmw, SVGA_REG_BUSY) != 0)
468 		;
469 
470 	vmw->last_read_seqno = vmw_fence_read(vmw);
471 
472 	vmw_write(vmw, SVGA_REG_CONFIG_DONE,
473 		  vmw->config_done_state);
474 	vmw_write(vmw, SVGA_REG_ENABLE,
475 		  vmw->enable_state);
476 	vmw_write(vmw, SVGA_REG_TRACES,
477 		  vmw->traces_state);
478 
479 	vmw_fifo_destroy(vmw);
480 }
481 
482 /**
483  * vmw_request_device_late - Perform late device setup
484  *
485  * @dev_priv: Pointer to device private.
486  *
487  * This function performs setup of otables and enables large command
488  * buffer submission. These tasks are split out to a separate function
489  * because it reverts vmw_release_device_early and is intended to be used
490  * by an error path in the hibernation code.
491  */
vmw_request_device_late(struct vmw_private * dev_priv)492 static int vmw_request_device_late(struct vmw_private *dev_priv)
493 {
494 	int ret;
495 
496 	if (dev_priv->has_mob) {
497 		ret = vmw_otables_setup(dev_priv);
498 		if (unlikely(ret != 0)) {
499 			DRM_ERROR("Unable to initialize "
500 				  "guest Memory OBjects.\n");
501 			return ret;
502 		}
503 	}
504 
505 	if (dev_priv->cman) {
506 		ret = vmw_cmdbuf_set_pool_size(dev_priv->cman, 256*4096);
507 		if (ret) {
508 			struct vmw_cmdbuf_man *man = dev_priv->cman;
509 
510 			dev_priv->cman = NULL;
511 			vmw_cmdbuf_man_destroy(man);
512 		}
513 	}
514 
515 	return 0;
516 }
517 
vmw_request_device(struct vmw_private * dev_priv)518 static int vmw_request_device(struct vmw_private *dev_priv)
519 {
520 	int ret;
521 
522 	ret = vmw_device_init(dev_priv);
523 	if (unlikely(ret != 0)) {
524 		DRM_ERROR("Unable to initialize the device.\n");
525 		return ret;
526 	}
527 	vmw_fence_fifo_up(dev_priv->fman);
528 	dev_priv->cman = vmw_cmdbuf_man_create(dev_priv);
529 	if (IS_ERR(dev_priv->cman)) {
530 		dev_priv->cman = NULL;
531 		dev_priv->sm_type = VMW_SM_LEGACY;
532 	}
533 
534 	ret = vmw_request_device_late(dev_priv);
535 	if (ret)
536 		goto out_no_mob;
537 
538 	ret = vmw_dummy_query_bo_create(dev_priv);
539 	if (unlikely(ret != 0))
540 		goto out_no_query_bo;
541 
542 	return 0;
543 
544 out_no_query_bo:
545 	if (dev_priv->cman)
546 		vmw_cmdbuf_remove_pool(dev_priv->cman);
547 	if (dev_priv->has_mob) {
548 		struct ttm_resource_manager *man;
549 
550 		man = ttm_manager_type(&dev_priv->bdev, VMW_PL_MOB);
551 		ttm_resource_manager_evict_all(&dev_priv->bdev, man);
552 		vmw_otables_takedown(dev_priv);
553 	}
554 	if (dev_priv->cman)
555 		vmw_cmdbuf_man_destroy(dev_priv->cman);
556 out_no_mob:
557 	vmw_fence_fifo_down(dev_priv->fman);
558 	vmw_device_fini(dev_priv);
559 	return ret;
560 }
561 
562 /**
563  * vmw_release_device_early - Early part of fifo takedown.
564  *
565  * @dev_priv: Pointer to device private struct.
566  *
567  * This is the first part of command submission takedown, to be called before
568  * buffer management is taken down.
569  */
vmw_release_device_early(struct vmw_private * dev_priv)570 static void vmw_release_device_early(struct vmw_private *dev_priv)
571 {
572 	/*
573 	 * Previous destructions should've released
574 	 * the pinned bo.
575 	 */
576 
577 	BUG_ON(dev_priv->pinned_bo != NULL);
578 
579 	vmw_bo_unreference(&dev_priv->dummy_query_bo);
580 	if (dev_priv->cman)
581 		vmw_cmdbuf_remove_pool(dev_priv->cman);
582 
583 	if (dev_priv->has_mob) {
584 		struct ttm_resource_manager *man;
585 
586 		man = ttm_manager_type(&dev_priv->bdev, VMW_PL_MOB);
587 		ttm_resource_manager_evict_all(&dev_priv->bdev, man);
588 		vmw_otables_takedown(dev_priv);
589 	}
590 }
591 
592 /**
593  * vmw_release_device_late - Late part of fifo takedown.
594  *
595  * @dev_priv: Pointer to device private struct.
596  *
597  * This is the last part of the command submission takedown, to be called when
598  * command submission is no longer needed. It may wait on pending fences.
599  */
vmw_release_device_late(struct vmw_private * dev_priv)600 static void vmw_release_device_late(struct vmw_private *dev_priv)
601 {
602 	vmw_fence_fifo_down(dev_priv->fman);
603 	if (dev_priv->cman)
604 		vmw_cmdbuf_man_destroy(dev_priv->cman);
605 
606 	vmw_device_fini(dev_priv);
607 }
608 
609 /*
610  * Sets the initial_[width|height] fields on the given vmw_private.
611  *
612  * It does so by reading SVGA_REG_[WIDTH|HEIGHT] regs and then
613  * clamping the value to fb_max_[width|height] fields and the
614  * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
615  * If the values appear to be invalid, set them to
616  * VMW_MIN_INITIAL_[WIDTH|HEIGHT].
617  */
vmw_get_initial_size(struct vmw_private * dev_priv)618 static void vmw_get_initial_size(struct vmw_private *dev_priv)
619 {
620 	uint32_t width;
621 	uint32_t height;
622 
623 	width = vmw_read(dev_priv, SVGA_REG_WIDTH);
624 	height = vmw_read(dev_priv, SVGA_REG_HEIGHT);
625 
626 	width = max_t(uint32_t, width, VMW_MIN_INITIAL_WIDTH);
627 	height = max_t(uint32_t, height, VMW_MIN_INITIAL_HEIGHT);
628 
629 	if (width > dev_priv->fb_max_width ||
630 	    height > dev_priv->fb_max_height) {
631 
632 		/*
633 		 * This is a host error and shouldn't occur.
634 		 */
635 
636 		width = VMW_MIN_INITIAL_WIDTH;
637 		height = VMW_MIN_INITIAL_HEIGHT;
638 	}
639 
640 	dev_priv->initial_width = width;
641 	dev_priv->initial_height = height;
642 }
643 
644 /**
645  * vmw_dma_select_mode - Determine how DMA mappings should be set up for this
646  * system.
647  *
648  * @dev_priv: Pointer to a struct vmw_private
649  *
650  * This functions tries to determine what actions need to be taken by the
651  * driver to make system pages visible to the device.
652  * If this function decides that DMA is not possible, it returns -EINVAL.
653  * The driver may then try to disable features of the device that require
654  * DMA.
655  */
vmw_dma_select_mode(struct vmw_private * dev_priv)656 static int vmw_dma_select_mode(struct vmw_private *dev_priv)
657 {
658 	static const char *names[vmw_dma_map_max] = {
659 		[vmw_dma_alloc_coherent] = "Using coherent TTM pages.",
660 		[vmw_dma_map_populate] = "Caching DMA mappings.",
661 		[vmw_dma_map_bind] = "Giving up DMA mappings early."};
662 
663 	/* TTM currently doesn't fully support SEV encryption. */
664 	if (cc_platform_has(CC_ATTR_MEM_ENCRYPT))
665 		return -EINVAL;
666 
667 	if (vmw_force_coherent)
668 		dev_priv->map_mode = vmw_dma_alloc_coherent;
669 	else if (vmw_restrict_iommu)
670 		dev_priv->map_mode = vmw_dma_map_bind;
671 	else
672 		dev_priv->map_mode = vmw_dma_map_populate;
673 
674 	drm_info(&dev_priv->drm,
675 		 "DMA map mode: %s\n", names[dev_priv->map_mode]);
676 	return 0;
677 }
678 
679 /**
680  * vmw_dma_masks - set required page- and dma masks
681  *
682  * @dev_priv: Pointer to struct drm-device
683  *
684  * With 32-bit we can only handle 32 bit PFNs. Optionally set that
685  * restriction also for 64-bit systems.
686  */
vmw_dma_masks(struct vmw_private * dev_priv)687 static int vmw_dma_masks(struct vmw_private *dev_priv)
688 {
689 	struct drm_device *dev = &dev_priv->drm;
690 	int ret = 0;
691 
692 	ret = dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(64));
693 	if (sizeof(unsigned long) == 4 || vmw_restrict_dma_mask) {
694 		drm_info(&dev_priv->drm,
695 			 "Restricting DMA addresses to 44 bits.\n");
696 		return dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(44));
697 	}
698 
699 	return ret;
700 }
701 
vmw_vram_manager_init(struct vmw_private * dev_priv)702 static int vmw_vram_manager_init(struct vmw_private *dev_priv)
703 {
704 	int ret;
705 	ret = ttm_range_man_init(&dev_priv->bdev, TTM_PL_VRAM, false,
706 				 dev_priv->vram_size >> PAGE_SHIFT);
707 	ttm_resource_manager_set_used(ttm_manager_type(&dev_priv->bdev, TTM_PL_VRAM), false);
708 	return ret;
709 }
710 
vmw_vram_manager_fini(struct vmw_private * dev_priv)711 static void vmw_vram_manager_fini(struct vmw_private *dev_priv)
712 {
713 	ttm_range_man_fini(&dev_priv->bdev, TTM_PL_VRAM);
714 }
715 
vmw_setup_pci_resources(struct vmw_private * dev,u32 pci_id)716 static int vmw_setup_pci_resources(struct vmw_private *dev,
717 				   u32 pci_id)
718 {
719 	resource_size_t rmmio_start;
720 	resource_size_t rmmio_size;
721 	resource_size_t fifo_start;
722 	resource_size_t fifo_size;
723 	int ret;
724 	struct pci_dev *pdev = to_pci_dev(dev->drm.dev);
725 
726 	pci_set_master(pdev);
727 
728 	ret = pci_request_regions(pdev, "vmwgfx probe");
729 	if (ret)
730 		return ret;
731 
732 	dev->pci_id = pci_id;
733 	if (pci_id == VMWGFX_PCI_ID_SVGA3) {
734 		rmmio_start = pci_resource_start(pdev, 0);
735 		rmmio_size = pci_resource_len(pdev, 0);
736 		dev->vram_start = pci_resource_start(pdev, 2);
737 		dev->vram_size = pci_resource_len(pdev, 2);
738 
739 		drm_info(&dev->drm,
740 			"Register MMIO at 0x%pa size is %llu kiB\n",
741 			 &rmmio_start, (uint64_t)rmmio_size / 1024);
742 		dev->rmmio = devm_ioremap(dev->drm.dev,
743 					  rmmio_start,
744 					  rmmio_size);
745 		if (!dev->rmmio) {
746 			drm_err(&dev->drm,
747 				"Failed mapping registers mmio memory.\n");
748 			pci_release_regions(pdev);
749 			return -ENOMEM;
750 		}
751 	} else if (pci_id == VMWGFX_PCI_ID_SVGA2) {
752 		dev->io_start = pci_resource_start(pdev, 0);
753 		dev->vram_start = pci_resource_start(pdev, 1);
754 		dev->vram_size = pci_resource_len(pdev, 1);
755 		fifo_start = pci_resource_start(pdev, 2);
756 		fifo_size = pci_resource_len(pdev, 2);
757 
758 		drm_info(&dev->drm,
759 			 "FIFO at %pa size is %llu kiB\n",
760 			 &fifo_start, (uint64_t)fifo_size / 1024);
761 		dev->fifo_mem = devm_memremap(dev->drm.dev,
762 					      fifo_start,
763 					      fifo_size,
764 					      MEMREMAP_WB);
765 
766 		if (IS_ERR(dev->fifo_mem)) {
767 			drm_err(&dev->drm,
768 				  "Failed mapping FIFO memory.\n");
769 			pci_release_regions(pdev);
770 			return PTR_ERR(dev->fifo_mem);
771 		}
772 	} else {
773 		pci_release_regions(pdev);
774 		return -EINVAL;
775 	}
776 
777 	/*
778 	 * This is approximate size of the vram, the exact size will only
779 	 * be known after we read SVGA_REG_VRAM_SIZE. The PCI resource
780 	 * size will be equal to or bigger than the size reported by
781 	 * SVGA_REG_VRAM_SIZE.
782 	 */
783 	drm_info(&dev->drm,
784 		 "VRAM at %pa size is %llu kiB\n",
785 		 &dev->vram_start, (uint64_t)dev->vram_size / 1024);
786 
787 	return 0;
788 }
789 
vmw_detect_version(struct vmw_private * dev)790 static int vmw_detect_version(struct vmw_private *dev)
791 {
792 	uint32_t svga_id;
793 
794 	vmw_write(dev, SVGA_REG_ID, vmw_is_svga_v3(dev) ?
795 			  SVGA_ID_3 : SVGA_ID_2);
796 	svga_id = vmw_read(dev, SVGA_REG_ID);
797 	if (svga_id != SVGA_ID_2 && svga_id != SVGA_ID_3) {
798 		drm_err(&dev->drm,
799 			"Unsupported SVGA ID 0x%x on chipset 0x%x\n",
800 			svga_id, dev->pci_id);
801 		return -ENOSYS;
802 	}
803 	BUG_ON(vmw_is_svga_v3(dev) && (svga_id != SVGA_ID_3));
804 	drm_info(&dev->drm,
805 		 "Running on SVGA version %d.\n", (svga_id & 0xff));
806 	return 0;
807 }
808 
vmw_driver_load(struct vmw_private * dev_priv,u32 pci_id)809 static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
810 {
811 	int ret;
812 	enum vmw_res_type i;
813 	bool refuse_dma = false;
814 	struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev);
815 
816 	dev_priv->drm.dev_private = dev_priv;
817 
818 	mutex_init(&dev_priv->cmdbuf_mutex);
819 	mutex_init(&dev_priv->binding_mutex);
820 	spin_lock_init(&dev_priv->resource_lock);
821 	spin_lock_init(&dev_priv->hw_lock);
822 	spin_lock_init(&dev_priv->waiter_lock);
823 	spin_lock_init(&dev_priv->cursor_lock);
824 
825 	ret = vmw_setup_pci_resources(dev_priv, pci_id);
826 	if (ret)
827 		return ret;
828 	ret = vmw_detect_version(dev_priv);
829 	if (ret)
830 		goto out_no_pci_or_version;
831 
832 
833 	for (i = vmw_res_context; i < vmw_res_max; ++i) {
834 		idr_init_base(&dev_priv->res_idr[i], 1);
835 		INIT_LIST_HEAD(&dev_priv->res_lru[i]);
836 	}
837 
838 	init_waitqueue_head(&dev_priv->fence_queue);
839 	init_waitqueue_head(&dev_priv->fifo_queue);
840 	dev_priv->fence_queue_waiters = 0;
841 	dev_priv->fifo_queue_waiters = 0;
842 
843 	dev_priv->used_memory_size = 0;
844 
845 	dev_priv->assume_16bpp = !!vmw_assume_16bpp;
846 
847 	dev_priv->enable_fb = enable_fbdev;
848 
849 
850 	dev_priv->capabilities = vmw_read(dev_priv, SVGA_REG_CAPABILITIES);
851 	vmw_print_bitmap(&dev_priv->drm, "Capabilities",
852 			 dev_priv->capabilities,
853 			 cap1_names, ARRAY_SIZE(cap1_names));
854 	if (dev_priv->capabilities & SVGA_CAP_CAP2_REGISTER) {
855 		dev_priv->capabilities2 = vmw_read(dev_priv, SVGA_REG_CAP2);
856 		vmw_print_bitmap(&dev_priv->drm, "Capabilities2",
857 				 dev_priv->capabilities2,
858 				 cap2_names, ARRAY_SIZE(cap2_names));
859 	}
860 
861 	ret = vmw_dma_select_mode(dev_priv);
862 	if (unlikely(ret != 0)) {
863 		drm_info(&dev_priv->drm,
864 			 "Restricting capabilities since DMA not available.\n");
865 		refuse_dma = true;
866 		if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS)
867 			drm_info(&dev_priv->drm,
868 				 "Disabling 3D acceleration.\n");
869 	}
870 
871 	dev_priv->vram_size = vmw_read(dev_priv, SVGA_REG_VRAM_SIZE);
872 	dev_priv->fifo_mem_size = vmw_read(dev_priv, SVGA_REG_MEM_SIZE);
873 	dev_priv->fb_max_width = vmw_read(dev_priv, SVGA_REG_MAX_WIDTH);
874 	dev_priv->fb_max_height = vmw_read(dev_priv, SVGA_REG_MAX_HEIGHT);
875 
876 	vmw_get_initial_size(dev_priv);
877 
878 	if (dev_priv->capabilities & SVGA_CAP_GMR2) {
879 		dev_priv->max_gmr_ids =
880 			vmw_read(dev_priv, SVGA_REG_GMR_MAX_IDS);
881 		dev_priv->max_gmr_pages =
882 			vmw_read(dev_priv, SVGA_REG_GMRS_MAX_PAGES);
883 		dev_priv->memory_size =
884 			vmw_read(dev_priv, SVGA_REG_MEMORY_SIZE);
885 		dev_priv->memory_size -= dev_priv->vram_size;
886 	} else {
887 		/*
888 		 * An arbitrary limit of 512MiB on surface
889 		 * memory. But all HWV8 hardware supports GMR2.
890 		 */
891 		dev_priv->memory_size = 512*1024*1024;
892 	}
893 	dev_priv->max_mob_pages = 0;
894 	dev_priv->max_mob_size = 0;
895 	if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS) {
896 		uint64_t mem_size;
897 
898 		if (dev_priv->capabilities2 & SVGA_CAP2_GB_MEMSIZE_2)
899 			mem_size = vmw_read(dev_priv,
900 					    SVGA_REG_GBOBJECT_MEM_SIZE_KB);
901 		else
902 			mem_size =
903 				vmw_read(dev_priv,
904 					 SVGA_REG_SUGGESTED_GBOBJECT_MEM_SIZE_KB);
905 
906 		/*
907 		 * Workaround for low memory 2D VMs to compensate for the
908 		 * allocation taken by fbdev
909 		 */
910 		if (!(dev_priv->capabilities & SVGA_CAP_3D))
911 			mem_size *= 3;
912 
913 		dev_priv->max_mob_pages = mem_size * 1024 / PAGE_SIZE;
914 		dev_priv->max_primary_mem =
915 			vmw_read(dev_priv, SVGA_REG_MAX_PRIMARY_MEM);
916 		dev_priv->max_mob_size =
917 			vmw_read(dev_priv, SVGA_REG_MOB_MAX_SIZE);
918 		dev_priv->stdu_max_width =
919 			vmw_read(dev_priv, SVGA_REG_SCREENTARGET_MAX_WIDTH);
920 		dev_priv->stdu_max_height =
921 			vmw_read(dev_priv, SVGA_REG_SCREENTARGET_MAX_HEIGHT);
922 
923 		vmw_write(dev_priv, SVGA_REG_DEV_CAP,
924 			  SVGA3D_DEVCAP_MAX_TEXTURE_WIDTH);
925 		dev_priv->texture_max_width = vmw_read(dev_priv,
926 						       SVGA_REG_DEV_CAP);
927 		vmw_write(dev_priv, SVGA_REG_DEV_CAP,
928 			  SVGA3D_DEVCAP_MAX_TEXTURE_HEIGHT);
929 		dev_priv->texture_max_height = vmw_read(dev_priv,
930 							SVGA_REG_DEV_CAP);
931 	} else {
932 		dev_priv->texture_max_width = 8192;
933 		dev_priv->texture_max_height = 8192;
934 		dev_priv->max_primary_mem = dev_priv->vram_size;
935 	}
936 	drm_info(&dev_priv->drm,
937 		 "Legacy memory limits: VRAM = %llu kB, FIFO = %llu kB, surface = %u kB\n",
938 		 (u64)dev_priv->vram_size / 1024,
939 		 (u64)dev_priv->fifo_mem_size / 1024,
940 		 dev_priv->memory_size / 1024);
941 
942 	drm_info(&dev_priv->drm,
943 		 "MOB limits: max mob size = %u kB, max mob pages = %u\n",
944 		 dev_priv->max_mob_size / 1024, dev_priv->max_mob_pages);
945 
946 	ret = vmw_dma_masks(dev_priv);
947 	if (unlikely(ret != 0))
948 		goto out_err0;
949 
950 	dma_set_max_seg_size(dev_priv->drm.dev, U32_MAX);
951 
952 	if (dev_priv->capabilities & SVGA_CAP_GMR2) {
953 		drm_info(&dev_priv->drm,
954 			 "Max GMR ids is %u\n",
955 			 (unsigned)dev_priv->max_gmr_ids);
956 		drm_info(&dev_priv->drm,
957 			 "Max number of GMR pages is %u\n",
958 			 (unsigned)dev_priv->max_gmr_pages);
959 	}
960 	drm_info(&dev_priv->drm,
961 		 "Maximum display memory size is %llu kiB\n",
962 		 (uint64_t)dev_priv->max_primary_mem / 1024);
963 
964 	/* Need mmio memory to check for fifo pitchlock cap. */
965 	if (!(dev_priv->capabilities & SVGA_CAP_DISPLAY_TOPOLOGY) &&
966 	    !(dev_priv->capabilities & SVGA_CAP_PITCHLOCK) &&
967 	    !vmw_fifo_have_pitchlock(dev_priv)) {
968 		ret = -ENOSYS;
969 		DRM_ERROR("Hardware has no pitchlock\n");
970 		goto out_err0;
971 	}
972 
973 	dev_priv->tdev = ttm_object_device_init(12, &vmw_prime_dmabuf_ops);
974 
975 	if (unlikely(dev_priv->tdev == NULL)) {
976 		drm_err(&dev_priv->drm,
977 			"Unable to initialize TTM object management.\n");
978 		ret = -ENOMEM;
979 		goto out_err0;
980 	}
981 
982 	if (dev_priv->capabilities & SVGA_CAP_IRQMASK) {
983 		ret = vmw_irq_install(dev_priv);
984 		if (ret != 0) {
985 			drm_err(&dev_priv->drm,
986 				"Failed installing irq: %d\n", ret);
987 			goto out_no_irq;
988 		}
989 	}
990 
991 	dev_priv->fman = vmw_fence_manager_init(dev_priv);
992 	if (unlikely(dev_priv->fman == NULL)) {
993 		ret = -ENOMEM;
994 		goto out_no_fman;
995 	}
996 
997 	ret = ttm_device_init(&dev_priv->bdev, &vmw_bo_driver,
998 			      dev_priv->drm.dev,
999 			      dev_priv->drm.anon_inode->i_mapping,
1000 			      dev_priv->drm.vma_offset_manager,
1001 			      dev_priv->map_mode == vmw_dma_alloc_coherent,
1002 			      false);
1003 	if (unlikely(ret != 0)) {
1004 		drm_err(&dev_priv->drm,
1005 			"Failed initializing TTM buffer object driver.\n");
1006 		goto out_no_bdev;
1007 	}
1008 
1009 	/*
1010 	 * Enable VRAM, but initially don't use it until SVGA is enabled and
1011 	 * unhidden.
1012 	 */
1013 
1014 	ret = vmw_vram_manager_init(dev_priv);
1015 	if (unlikely(ret != 0)) {
1016 		drm_err(&dev_priv->drm,
1017 			"Failed initializing memory manager for VRAM.\n");
1018 		goto out_no_vram;
1019 	}
1020 
1021 	ret = vmw_devcaps_create(dev_priv);
1022 	if (unlikely(ret != 0)) {
1023 		drm_err(&dev_priv->drm,
1024 			"Failed initializing device caps.\n");
1025 		goto out_no_vram;
1026 	}
1027 
1028 	/*
1029 	 * "Guest Memory Regions" is an aperture like feature with
1030 	 *  one slot per bo. There is an upper limit of the number of
1031 	 *  slots as well as the bo size.
1032 	 */
1033 	dev_priv->has_gmr = true;
1034 	/* TODO: This is most likely not correct */
1035 	if (((dev_priv->capabilities & (SVGA_CAP_GMR | SVGA_CAP_GMR2)) == 0) ||
1036 	    refuse_dma ||
1037 	    vmw_gmrid_man_init(dev_priv, VMW_PL_GMR) != 0) {
1038 		drm_info(&dev_priv->drm,
1039 			  "No GMR memory available. "
1040 			 "Graphics memory resources are very limited.\n");
1041 		dev_priv->has_gmr = false;
1042 	}
1043 
1044 	if (dev_priv->capabilities & SVGA_CAP_GBOBJECTS && !refuse_dma) {
1045 		dev_priv->has_mob = true;
1046 
1047 		if (vmw_gmrid_man_init(dev_priv, VMW_PL_MOB) != 0) {
1048 			drm_info(&dev_priv->drm,
1049 				 "No MOB memory available. "
1050 				 "3D will be disabled.\n");
1051 			dev_priv->has_mob = false;
1052 		}
1053 		if (vmw_sys_man_init(dev_priv) != 0) {
1054 			drm_info(&dev_priv->drm,
1055 				 "No MOB page table memory available. "
1056 				 "3D will be disabled.\n");
1057 			dev_priv->has_mob = false;
1058 		}
1059 	}
1060 
1061 	if (dev_priv->has_mob && (dev_priv->capabilities & SVGA_CAP_DX)) {
1062 		if (vmw_devcap_get(dev_priv, SVGA3D_DEVCAP_DXCONTEXT))
1063 			dev_priv->sm_type = VMW_SM_4;
1064 	}
1065 
1066 	/* SVGA_CAP2_DX2 (DefineGBSurface_v3) is needed for SM4_1 support */
1067 	if (has_sm4_context(dev_priv) &&
1068 	    (dev_priv->capabilities2 & SVGA_CAP2_DX2)) {
1069 		if (vmw_devcap_get(dev_priv, SVGA3D_DEVCAP_SM41))
1070 			dev_priv->sm_type = VMW_SM_4_1;
1071 		if (has_sm4_1_context(dev_priv) &&
1072 				(dev_priv->capabilities2 & SVGA_CAP2_DX3)) {
1073 			if (vmw_devcap_get(dev_priv, SVGA3D_DEVCAP_SM5)) {
1074 				dev_priv->sm_type = VMW_SM_5;
1075 				if (vmw_devcap_get(dev_priv, SVGA3D_DEVCAP_GL43))
1076 					dev_priv->sm_type = VMW_SM_5_1X;
1077 			}
1078 		}
1079 	}
1080 
1081 	ret = vmw_kms_init(dev_priv);
1082 	if (unlikely(ret != 0))
1083 		goto out_no_kms;
1084 	vmw_overlay_init(dev_priv);
1085 
1086 	ret = vmw_request_device(dev_priv);
1087 	if (ret)
1088 		goto out_no_fifo;
1089 
1090 	vmw_print_sm_type(dev_priv);
1091 	vmw_host_printf("vmwgfx: Module Version: %d.%d.%d (kernel: %s)",
1092 			VMWGFX_DRIVER_MAJOR, VMWGFX_DRIVER_MINOR,
1093 			VMWGFX_DRIVER_PATCHLEVEL, UTS_RELEASE);
1094 
1095 	if (dev_priv->enable_fb) {
1096 		vmw_fifo_resource_inc(dev_priv);
1097 		vmw_svga_enable(dev_priv);
1098 		vmw_fb_init(dev_priv);
1099 	}
1100 
1101 	dev_priv->pm_nb.notifier_call = vmwgfx_pm_notifier;
1102 	register_pm_notifier(&dev_priv->pm_nb);
1103 
1104 	return 0;
1105 
1106 out_no_fifo:
1107 	vmw_overlay_close(dev_priv);
1108 	vmw_kms_close(dev_priv);
1109 out_no_kms:
1110 	if (dev_priv->has_mob) {
1111 		vmw_gmrid_man_fini(dev_priv, VMW_PL_MOB);
1112 		vmw_sys_man_fini(dev_priv);
1113 	}
1114 	if (dev_priv->has_gmr)
1115 		vmw_gmrid_man_fini(dev_priv, VMW_PL_GMR);
1116 	vmw_devcaps_destroy(dev_priv);
1117 	vmw_vram_manager_fini(dev_priv);
1118 out_no_vram:
1119 	ttm_device_fini(&dev_priv->bdev);
1120 out_no_bdev:
1121 	vmw_fence_manager_takedown(dev_priv->fman);
1122 out_no_fman:
1123 	if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
1124 		vmw_irq_uninstall(&dev_priv->drm);
1125 out_no_irq:
1126 	ttm_object_device_release(&dev_priv->tdev);
1127 out_err0:
1128 	for (i = vmw_res_context; i < vmw_res_max; ++i)
1129 		idr_destroy(&dev_priv->res_idr[i]);
1130 
1131 	if (dev_priv->ctx.staged_bindings)
1132 		vmw_binding_state_free(dev_priv->ctx.staged_bindings);
1133 out_no_pci_or_version:
1134 	pci_release_regions(pdev);
1135 	return ret;
1136 }
1137 
vmw_driver_unload(struct drm_device * dev)1138 static void vmw_driver_unload(struct drm_device *dev)
1139 {
1140 	struct vmw_private *dev_priv = vmw_priv(dev);
1141 	struct pci_dev *pdev = to_pci_dev(dev->dev);
1142 	enum vmw_res_type i;
1143 
1144 	unregister_pm_notifier(&dev_priv->pm_nb);
1145 
1146 	if (dev_priv->ctx.res_ht_initialized)
1147 		vmwgfx_ht_remove(&dev_priv->ctx.res_ht);
1148 	vfree(dev_priv->ctx.cmd_bounce);
1149 	if (dev_priv->enable_fb) {
1150 		vmw_fb_off(dev_priv);
1151 		vmw_fb_close(dev_priv);
1152 		vmw_fifo_resource_dec(dev_priv);
1153 		vmw_svga_disable(dev_priv);
1154 	}
1155 
1156 	vmw_kms_close(dev_priv);
1157 	vmw_overlay_close(dev_priv);
1158 
1159 	if (dev_priv->has_gmr)
1160 		vmw_gmrid_man_fini(dev_priv, VMW_PL_GMR);
1161 
1162 	vmw_release_device_early(dev_priv);
1163 	if (dev_priv->has_mob) {
1164 		vmw_gmrid_man_fini(dev_priv, VMW_PL_MOB);
1165 		vmw_sys_man_fini(dev_priv);
1166 	}
1167 	vmw_devcaps_destroy(dev_priv);
1168 	vmw_vram_manager_fini(dev_priv);
1169 	ttm_device_fini(&dev_priv->bdev);
1170 	vmw_release_device_late(dev_priv);
1171 	vmw_fence_manager_takedown(dev_priv->fman);
1172 	if (dev_priv->capabilities & SVGA_CAP_IRQMASK)
1173 		vmw_irq_uninstall(&dev_priv->drm);
1174 
1175 	ttm_object_device_release(&dev_priv->tdev);
1176 	if (dev_priv->ctx.staged_bindings)
1177 		vmw_binding_state_free(dev_priv->ctx.staged_bindings);
1178 
1179 	for (i = vmw_res_context; i < vmw_res_max; ++i)
1180 		idr_destroy(&dev_priv->res_idr[i]);
1181 
1182 	vmw_mksstat_remove_all(dev_priv);
1183 
1184 	pci_release_regions(pdev);
1185 }
1186 
vmw_postclose(struct drm_device * dev,struct drm_file * file_priv)1187 static void vmw_postclose(struct drm_device *dev,
1188 			 struct drm_file *file_priv)
1189 {
1190 	struct vmw_fpriv *vmw_fp = vmw_fpriv(file_priv);
1191 
1192 	ttm_object_file_release(&vmw_fp->tfile);
1193 	kfree(vmw_fp);
1194 }
1195 
vmw_driver_open(struct drm_device * dev,struct drm_file * file_priv)1196 static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)
1197 {
1198 	struct vmw_private *dev_priv = vmw_priv(dev);
1199 	struct vmw_fpriv *vmw_fp;
1200 	int ret = -ENOMEM;
1201 
1202 	vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL);
1203 	if (unlikely(!vmw_fp))
1204 		return ret;
1205 
1206 	vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);
1207 	if (unlikely(vmw_fp->tfile == NULL))
1208 		goto out_no_tfile;
1209 
1210 	file_priv->driver_priv = vmw_fp;
1211 
1212 	return 0;
1213 
1214 out_no_tfile:
1215 	kfree(vmw_fp);
1216 	return ret;
1217 }
1218 
vmw_generic_ioctl(struct file * filp,unsigned int cmd,unsigned long arg,long (* ioctl_func)(struct file *,unsigned int,unsigned long))1219 static long vmw_generic_ioctl(struct file *filp, unsigned int cmd,
1220 			      unsigned long arg,
1221 			      long (*ioctl_func)(struct file *, unsigned int,
1222 						 unsigned long))
1223 {
1224 	struct drm_file *file_priv = filp->private_data;
1225 	struct drm_device *dev = file_priv->minor->dev;
1226 	unsigned int nr = DRM_IOCTL_NR(cmd);
1227 	unsigned int flags;
1228 
1229 	/*
1230 	 * Do extra checking on driver private ioctls.
1231 	 */
1232 
1233 	if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)
1234 	    && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls)) {
1235 		const struct drm_ioctl_desc *ioctl =
1236 			&vmw_ioctls[nr - DRM_COMMAND_BASE];
1237 
1238 		if (nr == DRM_COMMAND_BASE + DRM_VMW_EXECBUF) {
1239 			return ioctl_func(filp, cmd, arg);
1240 		} else if (nr == DRM_COMMAND_BASE + DRM_VMW_UPDATE_LAYOUT) {
1241 			if (!drm_is_current_master(file_priv) &&
1242 			    !capable(CAP_SYS_ADMIN))
1243 				return -EACCES;
1244 		}
1245 
1246 		if (unlikely(ioctl->cmd != cmd))
1247 			goto out_io_encoding;
1248 
1249 		flags = ioctl->flags;
1250 	} else if (!drm_ioctl_flags(nr, &flags))
1251 		return -EINVAL;
1252 
1253 	return ioctl_func(filp, cmd, arg);
1254 
1255 out_io_encoding:
1256 	DRM_ERROR("Invalid command format, ioctl %d\n",
1257 		  nr - DRM_COMMAND_BASE);
1258 
1259 	return -EINVAL;
1260 }
1261 
vmw_unlocked_ioctl(struct file * filp,unsigned int cmd,unsigned long arg)1262 static long vmw_unlocked_ioctl(struct file *filp, unsigned int cmd,
1263 			       unsigned long arg)
1264 {
1265 	return vmw_generic_ioctl(filp, cmd, arg, &drm_ioctl);
1266 }
1267 
1268 #ifdef CONFIG_COMPAT
vmw_compat_ioctl(struct file * filp,unsigned int cmd,unsigned long arg)1269 static long vmw_compat_ioctl(struct file *filp, unsigned int cmd,
1270 			     unsigned long arg)
1271 {
1272 	return vmw_generic_ioctl(filp, cmd, arg, &drm_compat_ioctl);
1273 }
1274 #endif
1275 
vmw_master_set(struct drm_device * dev,struct drm_file * file_priv,bool from_open)1276 static void vmw_master_set(struct drm_device *dev,
1277 			   struct drm_file *file_priv,
1278 			   bool from_open)
1279 {
1280 	/*
1281 	 * Inform a new master that the layout may have changed while
1282 	 * it was gone.
1283 	 */
1284 	if (!from_open)
1285 		drm_sysfs_hotplug_event(dev);
1286 }
1287 
vmw_master_drop(struct drm_device * dev,struct drm_file * file_priv)1288 static void vmw_master_drop(struct drm_device *dev,
1289 			    struct drm_file *file_priv)
1290 {
1291 	struct vmw_private *dev_priv = vmw_priv(dev);
1292 
1293 	vmw_kms_legacy_hotspot_clear(dev_priv);
1294 	if (!dev_priv->enable_fb)
1295 		vmw_svga_disable(dev_priv);
1296 }
1297 
1298 /**
1299  * __vmw_svga_enable - Enable SVGA mode, FIFO and use of VRAM.
1300  *
1301  * @dev_priv: Pointer to device private struct.
1302  * Needs the reservation sem to be held in non-exclusive mode.
1303  */
__vmw_svga_enable(struct vmw_private * dev_priv)1304 static void __vmw_svga_enable(struct vmw_private *dev_priv)
1305 {
1306 	struct ttm_resource_manager *man = ttm_manager_type(&dev_priv->bdev, TTM_PL_VRAM);
1307 
1308 	if (!ttm_resource_manager_used(man)) {
1309 		vmw_write(dev_priv, SVGA_REG_ENABLE, SVGA_REG_ENABLE_ENABLE);
1310 		ttm_resource_manager_set_used(man, true);
1311 	}
1312 }
1313 
1314 /**
1315  * vmw_svga_enable - Enable SVGA mode, FIFO and use of VRAM.
1316  *
1317  * @dev_priv: Pointer to device private struct.
1318  */
vmw_svga_enable(struct vmw_private * dev_priv)1319 void vmw_svga_enable(struct vmw_private *dev_priv)
1320 {
1321 	__vmw_svga_enable(dev_priv);
1322 }
1323 
1324 /**
1325  * __vmw_svga_disable - Disable SVGA mode and use of VRAM.
1326  *
1327  * @dev_priv: Pointer to device private struct.
1328  * Needs the reservation sem to be held in exclusive mode.
1329  * Will not empty VRAM. VRAM must be emptied by caller.
1330  */
__vmw_svga_disable(struct vmw_private * dev_priv)1331 static void __vmw_svga_disable(struct vmw_private *dev_priv)
1332 {
1333 	struct ttm_resource_manager *man = ttm_manager_type(&dev_priv->bdev, TTM_PL_VRAM);
1334 
1335 	if (ttm_resource_manager_used(man)) {
1336 		ttm_resource_manager_set_used(man, false);
1337 		vmw_write(dev_priv, SVGA_REG_ENABLE,
1338 			  SVGA_REG_ENABLE_HIDE |
1339 			  SVGA_REG_ENABLE_ENABLE);
1340 	}
1341 }
1342 
1343 /**
1344  * vmw_svga_disable - Disable SVGA_MODE, and use of VRAM. Keep the fifo
1345  * running.
1346  *
1347  * @dev_priv: Pointer to device private struct.
1348  * Will empty VRAM.
1349  */
vmw_svga_disable(struct vmw_private * dev_priv)1350 void vmw_svga_disable(struct vmw_private *dev_priv)
1351 {
1352 	struct ttm_resource_manager *man = ttm_manager_type(&dev_priv->bdev, TTM_PL_VRAM);
1353 	/*
1354 	 * Disabling SVGA will turn off device modesetting capabilities, so
1355 	 * notify KMS about that so that it doesn't cache atomic state that
1356 	 * isn't valid anymore, for example crtcs turned on.
1357 	 * Strictly we'd want to do this under the SVGA lock (or an SVGA mutex),
1358 	 * but vmw_kms_lost_device() takes the reservation sem and thus we'll
1359 	 * end up with lock order reversal. Thus, a master may actually perform
1360 	 * a new modeset just after we call vmw_kms_lost_device() and race with
1361 	 * vmw_svga_disable(), but that should at worst cause atomic KMS state
1362 	 * to be inconsistent with the device, causing modesetting problems.
1363 	 *
1364 	 */
1365 	vmw_kms_lost_device(&dev_priv->drm);
1366 	if (ttm_resource_manager_used(man)) {
1367 		if (ttm_resource_manager_evict_all(&dev_priv->bdev, man))
1368 			DRM_ERROR("Failed evicting VRAM buffers.\n");
1369 		ttm_resource_manager_set_used(man, false);
1370 		vmw_write(dev_priv, SVGA_REG_ENABLE,
1371 			  SVGA_REG_ENABLE_HIDE |
1372 			  SVGA_REG_ENABLE_ENABLE);
1373 	}
1374 }
1375 
vmw_remove(struct pci_dev * pdev)1376 static void vmw_remove(struct pci_dev *pdev)
1377 {
1378 	struct drm_device *dev = pci_get_drvdata(pdev);
1379 
1380 	drm_dev_unregister(dev);
1381 	vmw_driver_unload(dev);
1382 }
1383 
vmw_debugfs_resource_managers_init(struct vmw_private * vmw)1384 static void vmw_debugfs_resource_managers_init(struct vmw_private *vmw)
1385 {
1386 	struct drm_minor *minor = vmw->drm.primary;
1387 	struct dentry *root = minor->debugfs_root;
1388 
1389 	ttm_resource_manager_create_debugfs(ttm_manager_type(&vmw->bdev, TTM_PL_SYSTEM),
1390 					    root, "system_ttm");
1391 	ttm_resource_manager_create_debugfs(ttm_manager_type(&vmw->bdev, TTM_PL_VRAM),
1392 					    root, "vram_ttm");
1393 	ttm_resource_manager_create_debugfs(ttm_manager_type(&vmw->bdev, VMW_PL_GMR),
1394 					    root, "gmr_ttm");
1395 	ttm_resource_manager_create_debugfs(ttm_manager_type(&vmw->bdev, VMW_PL_MOB),
1396 					    root, "mob_ttm");
1397 	ttm_resource_manager_create_debugfs(ttm_manager_type(&vmw->bdev, VMW_PL_SYSTEM),
1398 					    root, "system_mob_ttm");
1399 }
1400 
1401 static unsigned long
vmw_get_unmapped_area(struct file * file,unsigned long uaddr,unsigned long len,unsigned long pgoff,unsigned long flags)1402 vmw_get_unmapped_area(struct file *file, unsigned long uaddr,
1403 		      unsigned long len, unsigned long pgoff,
1404 		      unsigned long flags)
1405 {
1406 	struct drm_file *file_priv = file->private_data;
1407 	struct vmw_private *dev_priv = vmw_priv(file_priv->minor->dev);
1408 
1409 	return drm_get_unmapped_area(file, uaddr, len, pgoff, flags,
1410 				     dev_priv->drm.vma_offset_manager);
1411 }
1412 
vmwgfx_pm_notifier(struct notifier_block * nb,unsigned long val,void * ptr)1413 static int vmwgfx_pm_notifier(struct notifier_block *nb, unsigned long val,
1414 			      void *ptr)
1415 {
1416 	struct vmw_private *dev_priv =
1417 		container_of(nb, struct vmw_private, pm_nb);
1418 
1419 	switch (val) {
1420 	case PM_HIBERNATION_PREPARE:
1421 		/*
1422 		 * Take the reservation sem in write mode, which will make sure
1423 		 * there are no other processes holding a buffer object
1424 		 * reservation, meaning we should be able to evict all buffer
1425 		 * objects if needed.
1426 		 * Once user-space processes have been frozen, we can release
1427 		 * the lock again.
1428 		 */
1429 		dev_priv->suspend_locked = true;
1430 		break;
1431 	case PM_POST_HIBERNATION:
1432 	case PM_POST_RESTORE:
1433 		if (READ_ONCE(dev_priv->suspend_locked)) {
1434 			dev_priv->suspend_locked = false;
1435 		}
1436 		break;
1437 	default:
1438 		break;
1439 	}
1440 	return 0;
1441 }
1442 
vmw_pci_suspend(struct pci_dev * pdev,pm_message_t state)1443 static int vmw_pci_suspend(struct pci_dev *pdev, pm_message_t state)
1444 {
1445 	struct drm_device *dev = pci_get_drvdata(pdev);
1446 	struct vmw_private *dev_priv = vmw_priv(dev);
1447 
1448 	if (dev_priv->refuse_hibernation)
1449 		return -EBUSY;
1450 
1451 	pci_save_state(pdev);
1452 	pci_disable_device(pdev);
1453 	pci_set_power_state(pdev, PCI_D3hot);
1454 	return 0;
1455 }
1456 
vmw_pci_resume(struct pci_dev * pdev)1457 static int vmw_pci_resume(struct pci_dev *pdev)
1458 {
1459 	pci_set_power_state(pdev, PCI_D0);
1460 	pci_restore_state(pdev);
1461 	return pci_enable_device(pdev);
1462 }
1463 
vmw_pm_suspend(struct device * kdev)1464 static int vmw_pm_suspend(struct device *kdev)
1465 {
1466 	struct pci_dev *pdev = to_pci_dev(kdev);
1467 	struct pm_message dummy;
1468 
1469 	dummy.event = 0;
1470 
1471 	return vmw_pci_suspend(pdev, dummy);
1472 }
1473 
vmw_pm_resume(struct device * kdev)1474 static int vmw_pm_resume(struct device *kdev)
1475 {
1476 	struct pci_dev *pdev = to_pci_dev(kdev);
1477 
1478 	return vmw_pci_resume(pdev);
1479 }
1480 
vmw_pm_freeze(struct device * kdev)1481 static int vmw_pm_freeze(struct device *kdev)
1482 {
1483 	struct pci_dev *pdev = to_pci_dev(kdev);
1484 	struct drm_device *dev = pci_get_drvdata(pdev);
1485 	struct vmw_private *dev_priv = vmw_priv(dev);
1486 	struct ttm_operation_ctx ctx = {
1487 		.interruptible = false,
1488 		.no_wait_gpu = false
1489 	};
1490 	int ret;
1491 
1492 	/*
1493 	 * No user-space processes should be running now.
1494 	 */
1495 	ret = vmw_kms_suspend(&dev_priv->drm);
1496 	if (ret) {
1497 		DRM_ERROR("Failed to freeze modesetting.\n");
1498 		return ret;
1499 	}
1500 	if (dev_priv->enable_fb)
1501 		vmw_fb_off(dev_priv);
1502 
1503 	vmw_execbuf_release_pinned_bo(dev_priv);
1504 	vmw_resource_evict_all(dev_priv);
1505 	vmw_release_device_early(dev_priv);
1506 	while (ttm_device_swapout(&dev_priv->bdev, &ctx, GFP_KERNEL) > 0);
1507 	if (dev_priv->enable_fb)
1508 		vmw_fifo_resource_dec(dev_priv);
1509 	if (atomic_read(&dev_priv->num_fifo_resources) != 0) {
1510 		DRM_ERROR("Can't hibernate while 3D resources are active.\n");
1511 		if (dev_priv->enable_fb)
1512 			vmw_fifo_resource_inc(dev_priv);
1513 		WARN_ON(vmw_request_device_late(dev_priv));
1514 		dev_priv->suspend_locked = false;
1515 		if (dev_priv->suspend_state)
1516 			vmw_kms_resume(dev);
1517 		if (dev_priv->enable_fb)
1518 			vmw_fb_on(dev_priv);
1519 		return -EBUSY;
1520 	}
1521 
1522 	vmw_fence_fifo_down(dev_priv->fman);
1523 	__vmw_svga_disable(dev_priv);
1524 
1525 	vmw_release_device_late(dev_priv);
1526 	return 0;
1527 }
1528 
vmw_pm_restore(struct device * kdev)1529 static int vmw_pm_restore(struct device *kdev)
1530 {
1531 	struct pci_dev *pdev = to_pci_dev(kdev);
1532 	struct drm_device *dev = pci_get_drvdata(pdev);
1533 	struct vmw_private *dev_priv = vmw_priv(dev);
1534 	int ret;
1535 
1536 	vmw_detect_version(dev_priv);
1537 
1538 	if (dev_priv->enable_fb)
1539 		vmw_fifo_resource_inc(dev_priv);
1540 
1541 	ret = vmw_request_device(dev_priv);
1542 	if (ret)
1543 		return ret;
1544 
1545 	if (dev_priv->enable_fb)
1546 		__vmw_svga_enable(dev_priv);
1547 
1548 	vmw_fence_fifo_up(dev_priv->fman);
1549 	dev_priv->suspend_locked = false;
1550 	if (dev_priv->suspend_state)
1551 		vmw_kms_resume(&dev_priv->drm);
1552 
1553 	if (dev_priv->enable_fb)
1554 		vmw_fb_on(dev_priv);
1555 
1556 	return 0;
1557 }
1558 
1559 static const struct dev_pm_ops vmw_pm_ops = {
1560 	.freeze = vmw_pm_freeze,
1561 	.thaw = vmw_pm_restore,
1562 	.restore = vmw_pm_restore,
1563 	.suspend = vmw_pm_suspend,
1564 	.resume = vmw_pm_resume,
1565 };
1566 
1567 static const struct file_operations vmwgfx_driver_fops = {
1568 	.owner = THIS_MODULE,
1569 	.open = drm_open,
1570 	.release = drm_release,
1571 	.unlocked_ioctl = vmw_unlocked_ioctl,
1572 	.mmap = vmw_mmap,
1573 	.poll = drm_poll,
1574 	.read = drm_read,
1575 #if defined(CONFIG_COMPAT)
1576 	.compat_ioctl = vmw_compat_ioctl,
1577 #endif
1578 	.llseek = noop_llseek,
1579 	.get_unmapped_area = vmw_get_unmapped_area,
1580 };
1581 
1582 static const struct drm_driver driver = {
1583 	.driver_features =
1584 	DRIVER_MODESET | DRIVER_RENDER | DRIVER_ATOMIC | DRIVER_GEM,
1585 	.ioctls = vmw_ioctls,
1586 	.num_ioctls = ARRAY_SIZE(vmw_ioctls),
1587 	.master_set = vmw_master_set,
1588 	.master_drop = vmw_master_drop,
1589 	.open = vmw_driver_open,
1590 	.postclose = vmw_postclose,
1591 
1592 	.dumb_create = vmw_dumb_create,
1593 	.dumb_map_offset = drm_gem_ttm_dumb_map_offset,
1594 
1595 	.prime_fd_to_handle = vmw_prime_fd_to_handle,
1596 	.prime_handle_to_fd = vmw_prime_handle_to_fd,
1597 
1598 	.fops = &vmwgfx_driver_fops,
1599 	.name = VMWGFX_DRIVER_NAME,
1600 	.desc = VMWGFX_DRIVER_DESC,
1601 	.date = VMWGFX_DRIVER_DATE,
1602 	.major = VMWGFX_DRIVER_MAJOR,
1603 	.minor = VMWGFX_DRIVER_MINOR,
1604 	.patchlevel = VMWGFX_DRIVER_PATCHLEVEL
1605 };
1606 
1607 static struct pci_driver vmw_pci_driver = {
1608 	.name = VMWGFX_DRIVER_NAME,
1609 	.id_table = vmw_pci_id_list,
1610 	.probe = vmw_probe,
1611 	.remove = vmw_remove,
1612 	.driver = {
1613 		.pm = &vmw_pm_ops
1614 	}
1615 };
1616 
vmw_probe(struct pci_dev * pdev,const struct pci_device_id * ent)1617 static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
1618 {
1619 	struct vmw_private *vmw;
1620 	int ret;
1621 
1622 	ret = drm_aperture_remove_conflicting_pci_framebuffers(pdev, &driver);
1623 	if (ret)
1624 		goto out_error;
1625 
1626 	ret = pcim_enable_device(pdev);
1627 	if (ret)
1628 		goto out_error;
1629 
1630 	vmw = devm_drm_dev_alloc(&pdev->dev, &driver,
1631 				 struct vmw_private, drm);
1632 	if (IS_ERR(vmw)) {
1633 		ret = PTR_ERR(vmw);
1634 		goto out_error;
1635 	}
1636 
1637 	pci_set_drvdata(pdev, &vmw->drm);
1638 
1639 	ret = vmw_driver_load(vmw, ent->device);
1640 	if (ret)
1641 		goto out_error;
1642 
1643 	ret = drm_dev_register(&vmw->drm, 0);
1644 	if (ret)
1645 		goto out_unload;
1646 
1647 	vmw_debugfs_gem_init(vmw);
1648 	vmw_debugfs_resource_managers_init(vmw);
1649 
1650 	return 0;
1651 out_unload:
1652 	vmw_driver_unload(&vmw->drm);
1653 out_error:
1654 	return ret;
1655 }
1656 
1657 drm_module_pci_driver(vmw_pci_driver);
1658 
1659 MODULE_AUTHOR("VMware Inc. and others");
1660 MODULE_DESCRIPTION("Standalone drm driver for the VMware SVGA device");
1661 MODULE_LICENSE("GPL and additional rights");
1662 MODULE_VERSION(__stringify(VMWGFX_DRIVER_MAJOR) "."
1663 	       __stringify(VMWGFX_DRIVER_MINOR) "."
1664 	       __stringify(VMWGFX_DRIVER_PATCHLEVEL) "."
1665 	       "0");
1666