/* $NetBSD: drm_memory.c,v 1.14 2008/06/29 12:49:08 jmcneill Exp $ */ /* drm_memory.h -- Memory management wrappers for DRM -*- linux-c -*- * Created: Thu Feb 4 14:00:34 1999 by faith@valinux.com */ /*- *Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: * Rickard E. (Rik) Faith * Gareth Hughes * */ #include __KERNEL_RCSID(0, "$NetBSD: drm_memory.c,v 1.14 2008/06/29 12:49:08 jmcneill Exp $"); /* __FBSDID("$FreeBSD: src/sys/dev/drm/drm_memory.c,v 1.2 2005/11/28 23:13:52 anholt Exp $"); */ #include "drmP.h" #ifdef DRM_NO_AGP #define NAGP_I810 0 #else #if defined(_KERNEL_OPT) #include "agp_i810.h" #else #define NAGP_I810 1 /* XXX */ #endif #if NAGP_I810 > 0 /* XXX hack to borrow agp's register mapping */ #include #endif #endif #if !defined(_MODULE) MALLOC_DEFINE(M_DRM, "drm", "DRM Data Structures"); #endif void drm_mem_init(void) { /* malloc_type_attach(M_DRM); */ } void drm_mem_uninit(void) { } void *drm_alloc(size_t size, int area) { return malloc(size, M_DRM, M_NOWAIT); } void *drm_calloc(size_t nmemb, size_t size, int area) { return malloc(size * nmemb, M_DRM, M_NOWAIT | M_ZERO); } void *drm_realloc(void *oldpt, size_t oldsize, size_t size, int area) { void *pt; pt = malloc(size, M_DRM, M_NOWAIT); if (pt == NULL) return NULL; if (oldpt && oldsize) { memcpy(pt, oldpt, oldsize); free(oldpt, M_DRM); } return pt; } void drm_free(void *pt, size_t size, int area) { free(pt, M_DRM); } void *drm_ioremap(drm_device_t *dev, drm_local_map_t *map) { int i, reg, reason; for(i = 0; ipci_map_data[i].maptype == PCI_MAPREG_TYPE_MEM || dev->pci_map_data[i].maptype == (PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT)) && dev->pci_map_data[i].base == map->offset && dev->pci_map_data[i].size >= map->size) { map->bst = dev->pa.pa_memt; map->cnt = &(dev->pci_map_data[i].mapped); map->mapsize = dev->pci_map_data[i].size; dev->pci_map_data[i].mapped++; if (dev->pci_map_data[i].mapped > 1) { map->bsh = dev->pci_map_data[i].bsh; return dev->pci_map_data[i].vaddr; } if ((reason = bus_space_map(map->bst, map->offset, dev->pci_map_data[i].size, dev->pci_map_data[i].flags, &map->bsh))) { dev->pci_map_data[i].mapped--; #if NAGP_I810 > 0 /* XXX horrible kludge: agp might have mapped it */ if (agp_i810_borrow(map->offset, &map->bsh)) return bus_space_vaddr(map->bst, map->bsh); #endif DRM_DEBUG("ioremap: failed to map (%d)\n", reason); return NULL; } dev->pci_map_data[i].bsh = map->bsh; dev->pci_map_data[i].vaddr = bus_space_vaddr(map->bst, map->bsh); DRM_DEBUG("ioremap mem found: %p\n", dev->pci_map_data[i].vaddr); return dev->pci_map_data[i].vaddr; } } /* failed to find a valid mapping; all hope isn't lost though */ for(i = 0; iagp_map_data[i].mapped > 0 && dev->agp_map_data[i].base == map->offset && dev->agp_map_data[i].size >= map->size) { map->bst = dev->pa.pa_memt; map->cnt = &(dev->agp_map_data[i].mapped); map->mapsize = dev->agp_map_data[i].size; dev->agp_map_data[i].mapped++; map->bsh = dev->agp_map_data[i].bsh; return dev->agp_map_data[i].vaddr; } if (dev->agp_map_data[i].mapped == 0) { int rv; map->bst = dev->pa.pa_memt; dev->agp_map_data[i].mapped++; dev->agp_map_data[i].size = map->size; dev->agp_map_data[i].flags = BUS_SPACE_MAP_LINEAR; dev->agp_map_data[i].maptype = PCI_MAPREG_TYPE_MEM; map->cnt = &(dev->agp_map_data[i].mapped); map->mapsize = dev->agp_map_data[i].size; rv = bus_space_map(map->bst, map->offset, dev->agp_map_data[i].size, dev->agp_map_data[i].flags, &map->bsh); if (rv) { dev->agp_map_data[i].mapped--; DRM_DEBUG("ioremap: failed to map (%d)\n", rv); return NULL; } dev->agp_map_data[i].bsh = map->bsh; dev->agp_map_data[i].vaddr = bus_space_vaddr(map->bst, map->bsh); DRM_DEBUG("ioremap agp mem found: %p\n", dev->agp_map_data[i].vaddr); return dev->agp_map_data[i].vaddr; } } /* now we can give up... */ DRM_DEBUG("drm_ioremap failed: offset=%lx size=%lu\n", map->offset, map->size); return NULL; } void drm_ioremapfree(drm_local_map_t *map) { if (map->cnt == NULL) { DRM_INFO("drm_ioremapfree called for unknown map\n"); return; } if (*(map->cnt) > 0) { (*(map->cnt))--; if(*(map->cnt) == 0) bus_space_unmap(map->bst, map->bsh, map->mapsize); } } int drm_mtrr_add(unsigned long offset, size_t size, int flags) { #ifndef DRM_NO_MTRR struct mtrr mtrrmap; int one = 1; DRM_DEBUG("offset=%lx size=%ld\n", (long)offset, (long)size); mtrrmap.base = offset; mtrrmap.len = size; mtrrmap.type = flags; mtrrmap.flags = MTRR_VALID; return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL); #else return 0; #endif } int drm_mtrr_del(int __unused handle, unsigned long offset, size_t size, int flags) { #ifndef DRM_NO_MTRR struct mtrr mtrrmap; int one = 1; DRM_DEBUG("offset=%lx size=%ld\n", (long)offset, (long)size); mtrrmap.base = offset; mtrrmap.len = size; mtrrmap.type = flags; mtrrmap.flags = 0; return mtrr_set(&mtrrmap, &one, NULL, MTRR_GETSET_KERNEL); #else return 0; #endif }