50 	/* Intel 82865G/PE/P DRAM Controller/Host-Hub / Mobility 9800 Needs AGPMode 4 (deb #462590) */
52 …/* Intel 82865G/PE/P DRAM Controller/Host-Hub / RV280 [Radeon 9200 SE] Needs AGPMode 4 (lp #300304…
70 	/* Intel 82855PM host bridge / Mobility M9+ / VaioPCG-V505DX Needs AGPMode 2 (fdo #17928) */
97 	/* ASRock K7VT4A+ AGP 8x / ATI Radeon 9250 AGP Needs AGPMode 4 (lp #133192) */
121 	/* VIA VT8377 Host Bridge / RV280 Needs AGPMode 4 (ati ML) */
124 	/* ATI Host Bridge / RV280 [M9+] Needs AGPMode 1 (phoronix forum) */
132 	struct pci_dev *pdev = to_pci_dev(dev->dev);  in radeon_agp_head_init()
138 	head->bridge = agp_find_bridge(pdev);  in radeon_agp_head_init()
139 	if (!head->bridge) {  in radeon_agp_head_init()
140 		head->bridge = agp_backend_acquire(pdev);  in radeon_agp_head_init()
141 		if (!head->bridge) {  in radeon_agp_head_init()
145 		agp_copy_info(head->bridge, &head->agp_info);  in radeon_agp_head_init()
146 		agp_backend_release(head->bridge);  in radeon_agp_head_init()
148 		agp_copy_info(head->bridge, &head->agp_info);  in radeon_agp_head_init()
150 	if (head->agp_info.chipset == NOT_SUPPORTED) {  in radeon_agp_head_init()
154 	INIT_LIST_HEAD(&head->memory);  in radeon_agp_head_init()
155 	head->cant_use_aperture = head->agp_info.cant_use_aperture;  in radeon_agp_head_init()
156 	head->page_mask = head->agp_info.page_mask;  in radeon_agp_head_init()
157 	head->base = head->agp_info.aper_base;  in radeon_agp_head_init()
165 	struct pci_dev *pdev = to_pci_dev(dev->dev);  in radeon_agp_head_acquire()
167 	if (!rdev->agp)  in radeon_agp_head_acquire()
168 		return -ENODEV;  in radeon_agp_head_acquire()
169 	if (rdev->agp->acquired)  in radeon_agp_head_acquire()
170 		return -EBUSY;  in radeon_agp_head_acquire()
171 	rdev->agp->bridge = agp_backend_acquire(pdev);  in radeon_agp_head_acquire()
172 	if (!rdev->agp->bridge)  in radeon_agp_head_acquire()
173 		return -ENODEV;  in radeon_agp_head_acquire()
174 	rdev->agp->acquired = 1;  in radeon_agp_head_acquire()
180 	if (!rdev->agp || !rdev->agp->acquired)  in radeon_agp_head_release()
181 		return -EINVAL;  in radeon_agp_head_release()
182 	agp_backend_release(rdev->agp->bridge);  in radeon_agp_head_release()
183 	rdev->agp->acquired = 0;  in radeon_agp_head_release()
187 static int radeon_agp_head_enable(struct radeon_device *rdev, struct radeon_agp_mode mode)  in radeon_agp_head_enable()  argument
189 	if (!rdev->agp || !rdev->agp->acquired)  in radeon_agp_head_enable()
190 		return -EINVAL;  in radeon_agp_head_enable()
192 	rdev->agp->mode = mode.mode;  in radeon_agp_head_enable()
193 	agp_enable(rdev->agp->bridge, mode.mode);  in radeon_agp_head_enable()
194 	rdev->agp->enabled = 1;  in radeon_agp_head_enable()
202 	if (!rdev->agp || !rdev->agp->acquired)  in radeon_agp_head_info()
203 		return -EINVAL;  in radeon_agp_head_info()
205 	kern = &rdev->agp->agp_info;  in radeon_agp_head_info()
206 	info->agp_version_major = kern->version.major;  in radeon_agp_head_info()
207 	info->agp_version_minor = kern->version.minor;  in radeon_agp_head_info()
208 	info->mode = kern->mode;  in radeon_agp_head_info()
209 	info->aperture_base = kern->aper_base;  in radeon_agp_head_info()
210 	info->aperture_size = kern->aper_size * 1024 * 1024;  in radeon_agp_head_info()
211 	info->memory_allowed = kern->max_memory << PAGE_SHIFT;  in radeon_agp_head_info()
212 	info->memory_used = kern->current_memory << PAGE_SHIFT;  in radeon_agp_head_info()
213 	info->id_vendor = kern->device->vendor;  in radeon_agp_head_info()
214 	info->id_device = kern->device->device;  in radeon_agp_head_info()
224 	struct radeon_agp_mode mode;  in radeon_agp_init()  local
245 	if (rdev->agp->agp_info.aper_size < 32) {  in radeon_agp_init()
247 		dev_warn(rdev->dev, "AGP aperture too small (%zuM) "  in radeon_agp_init()
249 			rdev->agp->agp_info.aper_size);  in radeon_agp_init()
250 		return -EINVAL;  in radeon_agp_init()
253 	mode.mode = info.mode;  in radeon_agp_init()
255 	 * Just use the whatever mode the host sets up.  in radeon_agp_init()
257 	if (rdev->family <= CHIP_RV350)  in radeon_agp_init()
258 		agp_status = (RREG32(RADEON_AGP_STATUS) | RADEON_AGPv3_MODE) & mode.mode;  in radeon_agp_init()
260 		agp_status = mode.mode;  in radeon_agp_init()
276 	while (p && p->chip_device != 0) {  in radeon_agp_init()
277 		if (info.id_vendor == p->hostbridge_vendor &&  in radeon_agp_init()
278 		    info.id_device == p->hostbridge_device &&  in radeon_agp_init()
279 		    rdev->pdev->vendor == p->chip_vendor &&  in radeon_agp_init()
280 		    rdev->pdev->device == p->chip_device &&  in radeon_agp_init()
281 		    rdev->pdev->subsystem_vendor == p->subsys_vendor &&  in radeon_agp_init()
282 		    rdev->pdev->subsystem_device == p->subsys_device) {  in radeon_agp_init()
283 			default_mode = p->default_mode;  in radeon_agp_init()
291 		    (radeon_agpmode & (radeon_agpmode - 1))) {  in radeon_agp_init()
292 			DRM_ERROR("Illegal AGP Mode: %d (valid %s), leaving at %d\n",  in radeon_agp_init()
297 			DRM_INFO("AGP mode requested: %d\n", radeon_agpmode);  in radeon_agp_init()
303 	mode.mode &= ~RADEON_AGP_MODE_MASK;  in radeon_agp_init()
307 			mode.mode |= RADEON_AGPv3_8X_MODE;  in radeon_agp_init()
311 			mode.mode |= RADEON_AGPv3_4X_MODE;  in radeon_agp_init()
317 			mode.mode |= RADEON_AGP_4X_MODE;  in radeon_agp_init()
320 			mode.mode |= RADEON_AGP_2X_MODE;  in radeon_agp_init()
324 			mode.mode |= RADEON_AGP_1X_MODE;  in radeon_agp_init()
329 	mode.mode &= ~RADEON_AGP_FW_MODE; /* disable fw */  in radeon_agp_init()
330 	ret = radeon_agp_head_enable(rdev, mode);  in radeon_agp_init()
332 		DRM_ERROR("Unable to enable AGP (mode = 0x%lx)\n", mode.mode);  in radeon_agp_init()
337 	rdev->mc.agp_base = rdev->agp->agp_info.aper_base;  in radeon_agp_init()
338 	rdev->mc.gtt_size = rdev->agp->agp_info.aper_size << 20;  in radeon_agp_init()
339 	rdev->mc.gtt_start = rdev->mc.agp_base;  in radeon_agp_init()
340 	rdev->mc.gtt_end = rdev->mc.gtt_start + rdev->mc.gtt_size - 1;  in radeon_agp_init()
341 	dev_info(rdev->dev, "GTT: %lluM 0x%08llX - 0x%08llX\n",  in radeon_agp_init()
342 		rdev->mc.gtt_size >> 20, rdev->mc.gtt_start, rdev->mc.gtt_end);  in radeon_agp_init()
345 	if (rdev->family < CHIP_R200) {  in radeon_agp_init()
358 	if (rdev->flags & RADEON_IS_AGP) {  in radeon_agp_resume()
361 			dev_warn(rdev->dev, "radeon AGP reinit failed\n");  in radeon_agp_resume()
369 	if (rdev->agp && rdev->agp->acquired) {  in radeon_agp_fini()