3  * DMA IOCTL and function support
40  * Initialize the DMA data.
51 	dev->dma = malloc(sizeof(*dev->dma), DRM_MEM_DRIVER, M_NOWAIT | M_ZERO);  in drm_dma_setup()
52 	if (!dev->dma)  in drm_dma_setup()
56 		memset(&dev->dma->bufs[i], 0, sizeof(dev->dma->bufs[0]));  in drm_dma_setup()
62  * Cleanup the DMA resources.
66  * Free all pages associated with DMA buffers, the buffers and pages lists, and
67  * finally the drm_device::dma structure itself.
71 	struct drm_device_dma *dma = dev->dma;  in drm_dma_takedown()  local
74 	if (!dma)  in drm_dma_takedown()
77 	/* Clear dma buffers */  in drm_dma_takedown()
79 		if (dma->bufs[i].seg_count) {  in drm_dma_takedown()
83 				  dma->bufs[i].buf_count,  in drm_dma_takedown()
84 				  dma->bufs[i].seg_count);  in drm_dma_takedown()
85 			for (j = 0; j < dma->bufs[i].seg_count; j++) {  in drm_dma_takedown()
86 				if (dma->bufs[i].seglist[j]) {  in drm_dma_takedown()
87 					drm_pci_free(dev, dma->bufs[i].seglist[j]);  in drm_dma_takedown()
90 			free(dma->bufs[i].seglist, DRM_MEM_SEGS);  in drm_dma_takedown()
92 		if (dma->bufs[i].buf_count) {  in drm_dma_takedown()
93 			for (j = 0; j < dma->bufs[i].buf_count; j++) {  in drm_dma_takedown()
94 				free(dma->bufs[i].buflist[j].dev_private,  in drm_dma_takedown()
97 			free(dma->bufs[i].buflist, DRM_MEM_BUFS);  in drm_dma_takedown()
101 	free(dma->buflist, DRM_MEM_BUFS);  in drm_dma_takedown()
102 	free(dma->pagelist, DRM_MEM_PAGES);  in drm_dma_takedown()
103 	free(dev->dma, DRM_MEM_DRIVER);  in drm_dma_takedown()
104 	dev->dma = NULL;  in drm_dma_takedown()
136 	struct drm_device_dma *dma = dev->dma;  in drm_core_reclaim_buffers()  local
139 	if (!dma)  in drm_core_reclaim_buffers()
141 	for (i = 0; i < dma->buf_count; i++) {  in drm_core_reclaim_buffers()
142 		if (dma->buflist[i]->file_priv == file_priv) {  in drm_core_reclaim_buffers()
143 			switch (dma->buflist[i]->list) {  in drm_core_reclaim_buffers()
145 				drm_free_buffer(dev, dma->buflist[i]);  in drm_core_reclaim_buffers()
148 				dma->buflist[i]->list = DRM_LIST_RECLAIM;  in drm_core_reclaim_buffers()