1 /* drm_pci.h -- PCI DMA memory management wrappers for DRM -*- linux-c -*- */
44     "DRM device");
61 	dmah->busaddr = segs[0].ds_addr;  in drm_pci_busdma_callback()
73 	/* Need power-of-two alignment, so fail the allocation if it isn't. */  in drm_pci_alloc()
74 	if ((align & (align - 1)) != 0) {  in drm_pci_alloc()
75 		DRM_ERROR("drm_pci_alloc with non-power-of-two alignment %d\n",  in drm_pci_alloc()
85 	mtx_assert(&dev->dma_lock, MA_NOTOWNED);  in drm_pci_alloc()
86 	if (mtx_owned(&dev->dma_lock))  in drm_pci_alloc()
90 	    bus_get_dma_tag(dev->dev), /* parent */  in drm_pci_alloc()
96 	    &dmah->tag);  in drm_pci_alloc()
102 	ret = bus_dmamem_alloc(dmah->tag, &dmah->vaddr,  in drm_pci_alloc()
103 	    BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_NOCACHE, &dmah->map);  in drm_pci_alloc()
105 		bus_dma_tag_destroy(dmah->tag);  in drm_pci_alloc()
110 	ret = bus_dmamap_load(dmah->tag, dmah->map, dmah->vaddr, size,  in drm_pci_alloc()
113 		bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map);  in drm_pci_alloc()
114 		bus_dma_tag_destroy(dmah->tag);  in drm_pci_alloc()
127  * This function is for internal use in the Linux-specific DRM core code.
134 	bus_dmamap_unload(dmah->tag, dmah->map);  in __drm_pci_free()
135 	bus_dmamem_free(dmah->tag, dmah->vaddr, dmah->map);  in __drm_pci_free()
136 	bus_dma_tag_destroy(dmah->tag);  in __drm_pci_free()
152 	return dev->pci_domain;  in drm_get_pci_domain()
158 	if (dev->irqr)  in drm_pci_get_irq()
159 		return (dev->irq);  in drm_pci_get_irq()
161 	dev->irqr = bus_alloc_resource_any(dev->dev, SYS_RES_IRQ,  in drm_pci_get_irq()
162 	    &dev->irqrid, RF_SHAREABLE);  in drm_pci_get_irq()
163 	if (!dev->irqr) {  in drm_pci_get_irq()
164 		dev_err(dev->dev, "Failed to allocate IRQ\n");  in drm_pci_get_irq()
168 	dev->irq = (int) rman_get_start(dev->irqr);  in drm_pci_get_irq()
170 	return (dev->irq);  in drm_pci_get_irq()
175 	if (dev->irqr == NULL)  in drm_pci_free_irq()
178 	bus_release_resource(dev->dev, SYS_RES_IRQ,  in drm_pci_free_irq()
179 	    dev->irqrid, dev->irqr);  in drm_pci_free_irq()
181 	dev->irqr = NULL;  in drm_pci_free_irq()
182 	dev->irq = 0;  in drm_pci_free_irq()
187 	return dev->driver->name;  in drm_pci_get_name()
193 	master->unique_len = 40;  in drm_pci_set_busid()
194 	master->unique_size = master->unique_len;  in drm_pci_set_busid()
195 	master->unique = malloc(master->unique_size, DRM_MEM_DRIVER, M_NOWAIT);  in drm_pci_set_busid()
196 	if (master->unique == NULL)  in drm_pci_set_busid()
197 		return -ENOMEM;  in drm_pci_set_busid()
200 	len = snprintf(master->unique, master->unique_len,  in drm_pci_set_busid()
202 		       dev->pci_domain,  in drm_pci_set_busid()
203 		       dev->pci_bus,  in drm_pci_set_busid()
204 		       dev->pci_slot,  in drm_pci_set_busid()
205 		       dev->pci_func);  in drm_pci_set_busid()
207 	if (len >= master->unique_len) {  in drm_pci_set_busid()
209 		ret = -EINVAL;  in drm_pci_set_busid()
212 		master->unique_len = len;  in drm_pci_set_busid()
225 	master->unique_len = u->unique_len;  in drm_pci_set_unique()
226 	master->unique_size = u->unique_len + 1;  in drm_pci_set_unique()
227 	master->unique = malloc(master->unique_size, DRM_MEM_DRIVER, M_WAITOK);  in drm_pci_set_unique()
228 	if (!master->unique) {  in drm_pci_set_unique()
229 		ret = -ENOMEM;  in drm_pci_set_unique()
233 	if (copy_from_user(master->unique, u->unique, master->unique_len)) {  in drm_pci_set_unique()
234 		ret = -EFAULT;  in drm_pci_set_unique()
238 	master->unique[master->unique_len] = '\0';  in drm_pci_set_unique()
240 	/* Return error if the busid submitted doesn't match the device's actual  in drm_pci_set_unique()
243 	ret = sscanf(master->unique, "PCI:%d:%d:%d", &bus, &slot, &func);  in drm_pci_set_unique()
245 		ret = -EINVAL;  in drm_pci_set_unique()
252 	if ((domain != dev->pci_domain) ||  in drm_pci_set_unique()
253 	    (bus != dev->pci_bus) ||  in drm_pci_set_unique()
254 	    (slot != dev->pci_slot) ||  in drm_pci_set_unique()
255 	    (func != dev->pci_func)) {  in drm_pci_set_unique()
256 		ret = -EINVAL;  in drm_pci_set_unique()
267 	if ((p->busnum >> 8) != drm_get_pci_domain(dev) ||  in drm_pci_irq_by_busid()
268 	    (p->busnum & 0xff) != dev->pci_bus ||  in drm_pci_irq_by_busid()
269 	    p->devnum != dev->pci_slot || p->funcnum != dev->pci_func)  in drm_pci_irq_by_busid()
270 		return -EINVAL;  in drm_pci_irq_by_busid()
272 	p->irq = dev->irq;  in drm_pci_irq_by_busid()
274 	DRM_DEBUG("%d:%d:%d => IRQ %d\n", p->busnum, p->devnum, p->funcnum,  in drm_pci_irq_by_busid()
275 		  p->irq);  in drm_pci_irq_by_busid()
283 			dev->agp = drm_agp_init(dev);  in drm_pci_agp_init()
285 		    && (dev->agp == NULL)) {  in drm_pci_agp_init()
287 			return -EINVAL;  in drm_pci_agp_init()
290 			if (dev->agp && dev->agp->agp_info.ai_aperture_base != 0) {  in drm_pci_agp_init()
291 				if (drm_mtrr_add(dev->agp->agp_info.ai_aperture_base,  in drm_pci_agp_init()
292 				    dev->agp->agp_info.ai_aperture_size, DRM_MTRR_WC) == 0)  in drm_pci_agp_init()
293 					dev->agp->agp_mtrr = 1;  in drm_pci_agp_init()
295 					dev->agp->agp_mtrr = -1;  in drm_pci_agp_init()
316  * \param pdev - PCI device structure
317  * \param ent entry from the PCI ID table with device type flags
321  * then register the character device and inter module information.
331 	driver->bus = &drm_pci_bus;  in drm_get_pci_dev()
333 	dev->dev = kdev;  in drm_get_pci_dev()
335 	dev->pci_domain = pci_get_domain(dev->dev);  in drm_get_pci_dev()
336 	dev->pci_bus = pci_get_bus(dev->dev);  in drm_get_pci_dev()
337 	dev->pci_slot = pci_get_slot(dev->dev);  in drm_get_pci_dev()
338 	dev->pci_func = pci_get_function(dev->dev);  in drm_get_pci_dev()
340 	dev->pci_vendor = pci_get_vendor(dev->dev);  in drm_get_pci_dev()
341 	dev->pci_device = pci_get_device(dev->dev);  in drm_get_pci_dev()
342 	dev->pci_subvendor = pci_get_subvendor(dev->dev);  in drm_get_pci_dev()
343 	dev->pci_subdevice = pci_get_subdevice(dev->dev);  in drm_get_pci_dev()
353 		ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);  in drm_get_pci_dev()
358 	if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))  in drm_get_pci_dev()
361 	if (dev->driver->load) {  in drm_get_pci_dev()
362 		ret = dev->driver->load(dev,  in drm_get_pci_dev()
363 		    dev->id_entry->driver_private);  in drm_get_pci_dev()
371 						&dev->primary->mode_group);  in drm_get_pci_dev()
377 	list_add_tail(&dev->driver_item, &driver->device_list);  in drm_get_pci_dev()
381 		 driver->name, driver->major, driver->minor, driver->patchlevel,  in drm_get_pci_dev()
382 		 driver->date, device_get_nameunit(dev->dev), dev->primary->index);  in drm_get_pci_dev()
388 	if (dev->driver->unload)  in drm_get_pci_dev()
389 		dev->driver->unload(dev);  in drm_get_pci_dev()
391 	drm_put_minor(&dev->primary);  in drm_get_pci_dev()
394 		drm_put_minor(&dev->control);  in drm_get_pci_dev()
409 		return (-ENOENT);  in drm_pci_enable_msi()
411 	msicount = pci_msi_count(dev->dev);  in drm_pci_enable_msi()
416 	ret = pci_alloc_msi(dev->dev, &msicount);  in drm_pci_enable_msi()
419 		dev->msi_enabled = 1;  in drm_pci_enable_msi()
420 		dev->irqrid = 1;  in drm_pci_enable_msi()
423 	return (-ret);  in drm_pci_enable_msi()
430 	if (!dev->msi_enabled)  in drm_pci_disable_msi()
433 	pci_release_msi(dev->dev);  in drm_pci_disable_msi()
434 	dev->msi_enabled = 0;  in drm_pci_disable_msi()
435 	dev->irqrid = 0;  in drm_pci_disable_msi()
446 		return -EINVAL;  in drm_pcie_get_speed_cap_mask()
450 	    device_get_parent( /* `-- pci          */  in drm_pcie_get_speed_cap_mask()
451 	    device_get_parent( /*     `-- vgapci   */  in drm_pcie_get_speed_cap_mask()
452 	    dev->dev)));       /*         `-- drmn */  in drm_pcie_get_speed_cap_mask()
457 		return -EINVAL;  in drm_pcie_get_speed_cap_mask()
462 		return -EINVAL;  in drm_pcie_get_speed_cap_mask()
488 …DRM_INFO("probing gen 2 caps for device %x:%x = %x/%x\n", pci_get_vendor(root), pci_get_device(roo…  in drm_pcie_get_speed_cap_mask()