Loading...
1// SPDX-License-Identifier: MIT
2/*
3 * Copyright (C) 2013-2017 Oracle Corporation
4 * This file is based on ast_main.c
5 * Copyright 2012 Red Hat Inc.
6 * Authors: Dave Airlie <airlied@redhat.com>,
7 * Michael Thayer <michael.thayer@oracle.com,
8 * Hans de Goede <hdegoede@redhat.com>
9 */
10
11#include <linux/vbox_err.h>
12#include <drm/drm_fb_helper.h>
13#include <drm/drm_crtc_helper.h>
14
15#include "vbox_drv.h"
16#include "vboxvideo_guest.h"
17#include "vboxvideo_vbe.h"
18
19static void vbox_user_framebuffer_destroy(struct drm_framebuffer *fb)
20{
21 struct vbox_framebuffer *vbox_fb = to_vbox_framebuffer(fb);
22
23 if (vbox_fb->obj)
24 drm_gem_object_put_unlocked(vbox_fb->obj);
25
26 drm_framebuffer_cleanup(fb);
27 kfree(fb);
28}
29
30void vbox_report_caps(struct vbox_private *vbox)
31{
32 u32 caps = VBVACAPS_DISABLE_CURSOR_INTEGRATION |
33 VBVACAPS_IRQ | VBVACAPS_USE_VBVA_ONLY;
34
35 /* The host only accepts VIDEO_MODE_HINTS if it is send separately. */
36 hgsmi_send_caps_info(vbox->guest_pool, caps);
37 caps |= VBVACAPS_VIDEO_MODE_HINTS;
38 hgsmi_send_caps_info(vbox->guest_pool, caps);
39}
40
41/* Send information about dirty rectangles to VBVA. */
42void vbox_framebuffer_dirty_rectangles(struct drm_framebuffer *fb,
43 struct drm_clip_rect *rects,
44 unsigned int num_rects)
45{
46 struct vbox_private *vbox = fb->dev->dev_private;
47 struct drm_display_mode *mode;
48 struct drm_crtc *crtc;
49 int crtc_x, crtc_y;
50 unsigned int i;
51
52 mutex_lock(&vbox->hw_mutex);
53 list_for_each_entry(crtc, &fb->dev->mode_config.crtc_list, head) {
54 if (crtc->primary->state->fb != fb)
55 continue;
56
57 mode = &crtc->state->mode;
58 crtc_x = crtc->primary->state->src_x >> 16;
59 crtc_y = crtc->primary->state->src_y >> 16;
60
61 for (i = 0; i < num_rects; ++i) {
62 struct vbva_cmd_hdr cmd_hdr;
63 unsigned int crtc_id = to_vbox_crtc(crtc)->crtc_id;
64
65 if (rects[i].x1 > crtc_x + mode->hdisplay ||
66 rects[i].y1 > crtc_y + mode->vdisplay ||
67 rects[i].x2 < crtc_x ||
68 rects[i].y2 < crtc_y)
69 continue;
70
71 cmd_hdr.x = (s16)rects[i].x1;
72 cmd_hdr.y = (s16)rects[i].y1;
73 cmd_hdr.w = (u16)rects[i].x2 - rects[i].x1;
74 cmd_hdr.h = (u16)rects[i].y2 - rects[i].y1;
75
76 if (!vbva_buffer_begin_update(&vbox->vbva_info[crtc_id],
77 vbox->guest_pool))
78 continue;
79
80 vbva_write(&vbox->vbva_info[crtc_id], vbox->guest_pool,
81 &cmd_hdr, sizeof(cmd_hdr));
82 vbva_buffer_end_update(&vbox->vbva_info[crtc_id]);
83 }
84 }
85 mutex_unlock(&vbox->hw_mutex);
86}
87
88static int vbox_user_framebuffer_dirty(struct drm_framebuffer *fb,
89 struct drm_file *file_priv,
90 unsigned int flags, unsigned int color,
91 struct drm_clip_rect *rects,
92 unsigned int num_rects)
93{
94 vbox_framebuffer_dirty_rectangles(fb, rects, num_rects);
95
96 return 0;
97}
98
99static const struct drm_framebuffer_funcs vbox_fb_funcs = {
100 .destroy = vbox_user_framebuffer_destroy,
101 .dirty = vbox_user_framebuffer_dirty,
102};
103
104int vbox_framebuffer_init(struct vbox_private *vbox,
105 struct vbox_framebuffer *vbox_fb,
106 const struct drm_mode_fb_cmd2 *mode_cmd,
107 struct drm_gem_object *obj)
108{
109 int ret;
110
111 drm_helper_mode_fill_fb_struct(&vbox->ddev, &vbox_fb->base, mode_cmd);
112 vbox_fb->obj = obj;
113 ret = drm_framebuffer_init(&vbox->ddev, &vbox_fb->base, &vbox_fb_funcs);
114 if (ret) {
115 DRM_ERROR("framebuffer init failed %d\n", ret);
116 return ret;
117 }
118
119 return 0;
120}
121
122static int vbox_accel_init(struct vbox_private *vbox)
123{
124 struct vbva_buffer *vbva;
125 unsigned int i;
126
127 vbox->vbva_info = devm_kcalloc(vbox->ddev.dev, vbox->num_crtcs,
128 sizeof(*vbox->vbva_info), GFP_KERNEL);
129 if (!vbox->vbva_info)
130 return -ENOMEM;
131
132 /* Take a command buffer for each screen from the end of usable VRAM. */
133 vbox->available_vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE;
134
135 vbox->vbva_buffers = pci_iomap_range(vbox->ddev.pdev, 0,
136 vbox->available_vram_size,
137 vbox->num_crtcs *
138 VBVA_MIN_BUFFER_SIZE);
139 if (!vbox->vbva_buffers)
140 return -ENOMEM;
141
142 for (i = 0; i < vbox->num_crtcs; ++i) {
143 vbva_setup_buffer_context(&vbox->vbva_info[i],
144 vbox->available_vram_size +
145 i * VBVA_MIN_BUFFER_SIZE,
146 VBVA_MIN_BUFFER_SIZE);
147 vbva = (void __force *)vbox->vbva_buffers +
148 i * VBVA_MIN_BUFFER_SIZE;
149 if (!vbva_enable(&vbox->vbva_info[i],
150 vbox->guest_pool, vbva, i)) {
151 /* very old host or driver error. */
152 DRM_ERROR("vboxvideo: vbva_enable failed\n");
153 }
154 }
155
156 return 0;
157}
158
159static void vbox_accel_fini(struct vbox_private *vbox)
160{
161 unsigned int i;
162
163 for (i = 0; i < vbox->num_crtcs; ++i)
164 vbva_disable(&vbox->vbva_info[i], vbox->guest_pool, i);
165
166 pci_iounmap(vbox->ddev.pdev, vbox->vbva_buffers);
167}
168
169/* Do we support the 4.3 plus mode hint reporting interface? */
170static bool have_hgsmi_mode_hints(struct vbox_private *vbox)
171{
172 u32 have_hints, have_cursor;
173 int ret;
174
175 ret = hgsmi_query_conf(vbox->guest_pool,
176 VBOX_VBVA_CONF32_MODE_HINT_REPORTING,
177 &have_hints);
178 if (ret)
179 return false;
180
181 ret = hgsmi_query_conf(vbox->guest_pool,
182 VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING,
183 &have_cursor);
184 if (ret)
185 return false;
186
187 return have_hints == VINF_SUCCESS && have_cursor == VINF_SUCCESS;
188}
189
190bool vbox_check_supported(u16 id)
191{
192 u16 dispi_id;
193
194 vbox_write_ioport(VBE_DISPI_INDEX_ID, id);
195 dispi_id = inw(VBE_DISPI_IOPORT_DATA);
196
197 return dispi_id == id;
198}
199
200int vbox_hw_init(struct vbox_private *vbox)
201{
202 int ret = -ENOMEM;
203
204 vbox->full_vram_size = inl(VBE_DISPI_IOPORT_DATA);
205 vbox->any_pitch = vbox_check_supported(VBE_DISPI_ID_ANYX);
206
207 DRM_INFO("VRAM %08x\n", vbox->full_vram_size);
208
209 /* Map guest-heap at end of vram */
210 vbox->guest_heap =
211 pci_iomap_range(vbox->ddev.pdev, 0, GUEST_HEAP_OFFSET(vbox),
212 GUEST_HEAP_SIZE);
213 if (!vbox->guest_heap)
214 return -ENOMEM;
215
216 /* Create guest-heap mem-pool use 2^4 = 16 byte chunks */
217 vbox->guest_pool = gen_pool_create(4, -1);
218 if (!vbox->guest_pool)
219 goto err_unmap_guest_heap;
220
221 ret = gen_pool_add_virt(vbox->guest_pool,
222 (unsigned long)vbox->guest_heap,
223 GUEST_HEAP_OFFSET(vbox),
224 GUEST_HEAP_USABLE_SIZE, -1);
225 if (ret)
226 goto err_destroy_guest_pool;
227
228 ret = hgsmi_test_query_conf(vbox->guest_pool);
229 if (ret) {
230 DRM_ERROR("vboxvideo: hgsmi_test_query_conf failed\n");
231 goto err_destroy_guest_pool;
232 }
233
234 /* Reduce available VRAM size to reflect the guest heap. */
235 vbox->available_vram_size = GUEST_HEAP_OFFSET(vbox);
236 /* Linux drm represents monitors as a 32-bit array. */
237 hgsmi_query_conf(vbox->guest_pool, VBOX_VBVA_CONF32_MONITOR_COUNT,
238 &vbox->num_crtcs);
239 vbox->num_crtcs = clamp_t(u32, vbox->num_crtcs, 1, VBOX_MAX_SCREENS);
240
241 if (!have_hgsmi_mode_hints(vbox)) {
242 ret = -ENOTSUPP;
243 goto err_destroy_guest_pool;
244 }
245
246 vbox->last_mode_hints = devm_kcalloc(vbox->ddev.dev, vbox->num_crtcs,
247 sizeof(struct vbva_modehint),
248 GFP_KERNEL);
249 if (!vbox->last_mode_hints) {
250 ret = -ENOMEM;
251 goto err_destroy_guest_pool;
252 }
253
254 ret = vbox_accel_init(vbox);
255 if (ret)
256 goto err_destroy_guest_pool;
257
258 return 0;
259
260err_destroy_guest_pool:
261 gen_pool_destroy(vbox->guest_pool);
262err_unmap_guest_heap:
263 pci_iounmap(vbox->ddev.pdev, vbox->guest_heap);
264 return ret;
265}
266
267void vbox_hw_fini(struct vbox_private *vbox)
268{
269 vbox_accel_fini(vbox);
270 gen_pool_destroy(vbox->guest_pool);
271 pci_iounmap(vbox->ddev.pdev, vbox->guest_heap);
272}
273
274int vbox_gem_create(struct vbox_private *vbox,
275 u32 size, bool iskernel, struct drm_gem_object **obj)
276{
277 struct drm_gem_vram_object *gbo;
278 int ret;
279
280 *obj = NULL;
281
282 size = roundup(size, PAGE_SIZE);
283 if (size == 0)
284 return -EINVAL;
285
286 gbo = drm_gem_vram_create(&vbox->ddev, &vbox->ddev.vram_mm->bdev,
287 size, 0, false);
288 if (IS_ERR(gbo)) {
289 ret = PTR_ERR(gbo);
290 if (ret != -ERESTARTSYS)
291 DRM_ERROR("failed to allocate GEM object\n");
292 return ret;
293 }
294
295 *obj = &gbo->bo.base;
296
297 return 0;
298}
1// SPDX-License-Identifier: MIT
2/*
3 * Copyright (C) 2013-2017 Oracle Corporation
4 * This file is based on ast_main.c
5 * Copyright 2012 Red Hat Inc.
6 * Authors: Dave Airlie <airlied@redhat.com>,
7 * Michael Thayer <michael.thayer@oracle.com,
8 * Hans de Goede <hdegoede@redhat.com>
9 */
10
11#include <linux/pci.h>
12#include <linux/vbox_err.h>
13
14#include <drm/drm_damage_helper.h>
15
16#include "vbox_drv.h"
17#include "vboxvideo_guest.h"
18#include "vboxvideo_vbe.h"
19
20void vbox_report_caps(struct vbox_private *vbox)
21{
22 u32 caps = VBVACAPS_DISABLE_CURSOR_INTEGRATION |
23 VBVACAPS_IRQ | VBVACAPS_USE_VBVA_ONLY;
24
25 /* The host only accepts VIDEO_MODE_HINTS if it is send separately. */
26 hgsmi_send_caps_info(vbox->guest_pool, caps);
27 caps |= VBVACAPS_VIDEO_MODE_HINTS;
28 hgsmi_send_caps_info(vbox->guest_pool, caps);
29}
30
31static int vbox_accel_init(struct vbox_private *vbox)
32{
33 struct pci_dev *pdev = to_pci_dev(vbox->ddev.dev);
34 struct vbva_buffer *vbva;
35 unsigned int i;
36
37 vbox->vbva_info = devm_kcalloc(vbox->ddev.dev, vbox->num_crtcs,
38 sizeof(*vbox->vbva_info), GFP_KERNEL);
39 if (!vbox->vbva_info)
40 return -ENOMEM;
41
42 /* Take a command buffer for each screen from the end of usable VRAM. */
43 vbox->available_vram_size -= vbox->num_crtcs * VBVA_MIN_BUFFER_SIZE;
44
45 vbox->vbva_buffers = pci_iomap_range(pdev, 0,
46 vbox->available_vram_size,
47 vbox->num_crtcs *
48 VBVA_MIN_BUFFER_SIZE);
49 if (!vbox->vbva_buffers)
50 return -ENOMEM;
51
52 for (i = 0; i < vbox->num_crtcs; ++i) {
53 vbva_setup_buffer_context(&vbox->vbva_info[i],
54 vbox->available_vram_size +
55 i * VBVA_MIN_BUFFER_SIZE,
56 VBVA_MIN_BUFFER_SIZE);
57 vbva = (void __force *)vbox->vbva_buffers +
58 i * VBVA_MIN_BUFFER_SIZE;
59 if (!vbva_enable(&vbox->vbva_info[i],
60 vbox->guest_pool, vbva, i)) {
61 /* very old host or driver error. */
62 DRM_ERROR("vboxvideo: vbva_enable failed\n");
63 }
64 }
65
66 return 0;
67}
68
69static void vbox_accel_fini(struct vbox_private *vbox)
70{
71 unsigned int i;
72
73 for (i = 0; i < vbox->num_crtcs; ++i)
74 vbva_disable(&vbox->vbva_info[i], vbox->guest_pool, i);
75}
76
77/* Do we support the 4.3 plus mode hint reporting interface? */
78static bool have_hgsmi_mode_hints(struct vbox_private *vbox)
79{
80 u32 have_hints, have_cursor;
81 int ret;
82
83 ret = hgsmi_query_conf(vbox->guest_pool,
84 VBOX_VBVA_CONF32_MODE_HINT_REPORTING,
85 &have_hints);
86 if (ret)
87 return false;
88
89 ret = hgsmi_query_conf(vbox->guest_pool,
90 VBOX_VBVA_CONF32_GUEST_CURSOR_REPORTING,
91 &have_cursor);
92 if (ret)
93 return false;
94
95 return have_hints == VINF_SUCCESS && have_cursor == VINF_SUCCESS;
96}
97
98bool vbox_check_supported(u16 id)
99{
100 u16 dispi_id;
101
102 vbox_write_ioport(VBE_DISPI_INDEX_ID, id);
103 dispi_id = inw(VBE_DISPI_IOPORT_DATA);
104
105 return dispi_id == id;
106}
107
108int vbox_hw_init(struct vbox_private *vbox)
109{
110 struct pci_dev *pdev = to_pci_dev(vbox->ddev.dev);
111 int ret = -ENOMEM;
112
113 vbox->full_vram_size = inl(VBE_DISPI_IOPORT_DATA);
114 vbox->any_pitch = vbox_check_supported(VBE_DISPI_ID_ANYX);
115
116 DRM_INFO("VRAM %08x\n", vbox->full_vram_size);
117
118 /* Map guest-heap at end of vram */
119 vbox->guest_heap =
120 pci_iomap_range(pdev, 0, GUEST_HEAP_OFFSET(vbox),
121 GUEST_HEAP_SIZE);
122 if (!vbox->guest_heap)
123 return -ENOMEM;
124
125 /* Create guest-heap mem-pool use 2^4 = 16 byte chunks */
126 vbox->guest_pool = devm_gen_pool_create(vbox->ddev.dev, 4, -1,
127 "vboxvideo-accel");
128 if (IS_ERR(vbox->guest_pool))
129 return PTR_ERR(vbox->guest_pool);
130
131 ret = gen_pool_add_virt(vbox->guest_pool,
132 (unsigned long)vbox->guest_heap,
133 GUEST_HEAP_OFFSET(vbox),
134 GUEST_HEAP_USABLE_SIZE, -1);
135 if (ret)
136 return ret;
137
138 ret = hgsmi_test_query_conf(vbox->guest_pool);
139 if (ret) {
140 DRM_ERROR("vboxvideo: hgsmi_test_query_conf failed\n");
141 return ret;
142 }
143
144 /* Reduce available VRAM size to reflect the guest heap. */
145 vbox->available_vram_size = GUEST_HEAP_OFFSET(vbox);
146 /* Linux drm represents monitors as a 32-bit array. */
147 hgsmi_query_conf(vbox->guest_pool, VBOX_VBVA_CONF32_MONITOR_COUNT,
148 &vbox->num_crtcs);
149 vbox->num_crtcs = clamp_t(u32, vbox->num_crtcs, 1, VBOX_MAX_SCREENS);
150
151 if (!have_hgsmi_mode_hints(vbox)) {
152 ret = -ENOTSUPP;
153 return ret;
154 }
155
156 vbox->last_mode_hints = devm_kcalloc(vbox->ddev.dev, vbox->num_crtcs,
157 sizeof(struct vbva_modehint),
158 GFP_KERNEL);
159 if (!vbox->last_mode_hints)
160 return -ENOMEM;
161
162 ret = vbox_accel_init(vbox);
163 if (ret)
164 return ret;
165
166 return 0;
167}
168
169void vbox_hw_fini(struct vbox_private *vbox)
170{
171 vbox_accel_fini(vbox);
172}