drm_memory.c revision 1450
1450N/A/*
1450N/A * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
1450N/A */
1450N/A
1450N/A/*
1450N/A * drm_memory.h -- Memory management wrappers for DRM -*- linux-c -*-
1450N/A * Created: Thu Feb 4 14:00:34 1999 by faith@valinux.com
1450N/A */
1450N/A/*
1450N/A * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
1450N/A * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
1450N/A * Copyright (c) 2009, 2012, Intel Corporation.
1450N/A * All Rights Reserved.
1450N/A *
1450N/A * Permission is hereby granted, free of charge, to any person obtaining a
1450N/A * copy of this software and associated documentation files (the "Software"),
1450N/A * to deal in the Software without restriction, including without limitation
1450N/A * the rights to use, copy, modify, merge, publish, distribute, sublicense,
1450N/A * and/or sell copies of the Software, and to permit persons to whom the
1450N/A * Software is furnished to do so, subject to the following conditions:
1450N/A *
1450N/A * The above copyright notice and this permission notice (including the next
1450N/A * paragraph) shall be included in all copies or substantial portions of the
1450N/A * Software.
1450N/A *
1450N/A * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
1450N/A * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
1450N/A * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
1450N/A * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
1450N/A * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
1450N/A * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
1450N/A * OTHER DEALINGS IN THE SOFTWARE.
1450N/A *
1450N/A * Authors:
1450N/A * Rickard E. (Rik) Faith <faith@valinux.com>
1450N/A * Gareth Hughes <gareth@valinux.com>
1450N/A *
1450N/A */
1450N/A
1450N/A#include "drmP.h"
1450N/A#ifdef __x86
1450N/A#include "drm_linux_list.h"
1450N/A#endif
1450N/A
1450N/A/* Device memory access structure */
1450N/A
1450N/Atypedef struct drm_device_iomap {
1450N/A uint_t paddr; /* physical address */
1450N/A uint_t size; /* size of mapping */
1450N/A caddr_t kvaddr; /* kernel virtual address */
1450N/A ddi_acc_handle_t acc_handle; /* data access handle */
1450N/A} drm_device_iomap_t;
1450N/A
1450N/Avoid *
1450N/Adrm_alloc(size_t size, int area)
1450N/A{
1450N/A _NOTE(ARGUNUSED(area))
1450N/A
1450N/A return (kmem_zalloc(1 * size, KM_NOSLEEP));
1450N/A}
1450N/A
1450N/Avoid *
1450N/Adrm_calloc(size_t nmemb, size_t size, int area)
1450N/A{
1450N/A _NOTE(ARGUNUSED(area))
1450N/A
1450N/A return (kmem_zalloc(size * nmemb, KM_NOSLEEP));
1450N/A}
1450N/A
1450N/Avoid *
1450N/Adrm_realloc(void *oldpt, size_t oldsize, size_t size, int area)
1450N/A{
1450N/A _NOTE(ARGUNUSED(area))
1450N/A
1450N/A void *pt;
1450N/A
1450N/A pt = kmem_zalloc(1 * size, KM_NOSLEEP);
1450N/A if (pt == NULL) {
1450N/A DRM_ERROR("pt is NULL strange");
1450N/A return (NULL);
1450N/A }
1450N/A if (oldpt && oldsize) {
1450N/A bcopy(oldpt, pt, min(oldsize, size));
1450N/A kmem_free(oldpt, oldsize);
1450N/A }
1450N/A return (pt);
1450N/A}
1450N/A
1450N/Avoid
1450N/Adrm_free(void *pt, size_t size, int area)
1450N/A{
1450N/A _NOTE(ARGUNUSED(area))
1450N/A
1450N/A if (pt)
1450N/A kmem_free(pt, size);
1450N/A}
1450N/A
1450N/Aint
1450N/Adrm_get_pci_index_reg(dev_info_t *dip, uint_t paddr, uint_t size, off_t *off)
1450N/A{
1450N/A _NOTE(ARGUNUSED(size))
1450N/A
1450N/A pci_regspec_t *regs = NULL;
1450N/A int len;
1450N/A uint_t regbase, regsize;
1450N/A int nregs, i;
1450N/A int regnum;
1450N/A
1450N/A regnum = -1;
1450N/A
1450N/A if (ddi_dev_nregs(dip, &nregs) == DDI_FAILURE) {
1450N/A DRM_ERROR("ddi_dev_nregs() failed");
1450N/A return (-1);
1450N/A }
1450N/A
1450N/A if (ddi_getlongprop(DDI_DEV_T_ANY, dip, DDI_PROP_DONTPASS,
1450N/A "assigned-addresses", (caddr_t)&regs, &len) != DDI_PROP_SUCCESS) {
1450N/A DRM_ERROR("ddi_getlongprop() failed");
1450N/A if (regs)
1450N/A kmem_free(regs, (size_t)len);
1450N/A return (-1);
1450N/A }
1450N/A
1450N/A for (i = 0; i < nregs; i ++) {
1450N/A regbase = (uint_t)regs[i].pci_phys_low;
1450N/A regsize = (uint_t)regs[i].pci_size_low;
1450N/A if ((uint_t)paddr >= regbase &&
1450N/A (uint_t)paddr < (regbase + regsize)) {
1450N/A regnum = i + 1;
1450N/A *off = (off_t)(paddr - regbase);
1450N/A break;
1450N/A }
1450N/A }
1450N/A
1450N/A if (regs)
1450N/A kmem_free(regs, (size_t)len);
1450N/A return (regnum);
1450N/A}
1450N/A
1450N/A/* data access attributes structure for register access */
1450N/Astatic ddi_device_acc_attr_t dev_attr = {
1450N/A DDI_DEVICE_ATTR_V0,
1450N/A#ifdef _BIG_ENDIAN
1450N/A DDI_STRUCTURE_LE_ACC,
1450N/A#else
1450N/A DDI_NEVERSWAP_ACC,
1450N/A#endif
1450N/A DDI_STRICTORDER_ACC,
1450N/A DDI_FLAGERR_ACC
1450N/A};
1450N/A
1450N/Astatic int
1450N/A__ioremap(dev_info_t *dip, drm_device_iomap_t *iomap)
1450N/A{
1450N/A off_t offset;
1450N/A int regnum;
1450N/A int ret;
1450N/A
1450N/A regnum = drm_get_pci_index_reg(
1450N/A dip, iomap->paddr, iomap->size, &offset);
1450N/A if (regnum < 0) {
1450N/A DRM_ERROR("can not find register entry: "
1450N/A "paddr=0x%x, size=0x%x", iomap->paddr, iomap->size);
1450N/A return -ENXIO;
1450N/A }
1450N/A
1450N/A ret = ddi_regs_map_setup(dip, regnum,
1450N/A (caddr_t *)&(iomap->kvaddr), (offset_t)offset,
1450N/A (offset_t)iomap->size, &dev_attr, &iomap->acc_handle);
1450N/A if (ret != DDI_SUCCESS) {
1450N/A DRM_ERROR("failed to map regs: "
1450N/A "regnum=%d, offset=0x%lx", regnum, offset);
1450N/A iomap->acc_handle = NULL;
1450N/A return -EFAULT;
1450N/A }
1450N/A
1450N/A return 0;
1450N/A}
1450N/A
1450N/Aint
1450N/Adrm_ioremap(struct drm_device *dev, struct drm_local_map *map)
1450N/A{
1450N/A struct drm_device_iomap iomap;
1450N/A int ret;
1450N/A
1450N/A DRM_DEBUG("\n");
1450N/A
1450N/A iomap.paddr = map->offset;
1450N/A iomap.size = map->size;
1450N/A
1450N/A ret = __ioremap(dev->devinfo, &iomap);
1450N/A if (ret) {
1450N/A DRM_ERROR("__ioremap failed: paddr=0x%lx, size=0x%lx",
1450N/A map->offset, map->size);
1450N/A return (ret);
1450N/A }
1450N/A
1450N/A map->handle = (void *)iomap.kvaddr;
1450N/A map->acc_handle = iomap.acc_handle;
1450N/A
1450N/A DRM_DEBUG(
1450N/A "map->handle=%p, map->size=%lx",
1450N/A (void *)map->handle, map->size);
1450N/A
1450N/A return (0);
1450N/A}
1450N/A
1450N/Avoid
1450N/Adrm_ioremapfree(struct drm_local_map *map)
1450N/A{
1450N/A if (map->acc_handle)
1450N/A ddi_regs_map_free(&map->acc_handle);
1450N/A}
1450N/A
1450N/A#ifdef __x86
1450N/Astruct drm_iomem {
1450N/A void *addr;
1450N/A size_t size;
1450N/A struct list_head head;
1450N/A};
1450N/A
1450N/Astruct list_head drm_iomem_list;
1450N/A
1450N/Avoid *
1450N/Adrm_sun_ioremap(uint64_t paddr, size_t size, uint32_t mode)
1450N/A{
1450N/A struct drm_iomem *iomem;
1450N/A void *addr;
1450N/A
1450N/A if (mode == DRM_MEM_CACHED)
1450N/A mode = GFXP_MEMORY_CACHED;
1450N/A else if (mode == DRM_MEM_UNCACHED)
1450N/A mode = GFXP_MEMORY_UNCACHED;
1450N/A else if (mode == DRM_MEM_WC)
1450N/A mode = GFXP_MEMORY_WRITECOMBINED;
1450N/A else
1450N/A return (NULL);
1450N/A
1450N/A addr = (void *)gfxp_alloc_kernel_space(size);
1450N/A if(!addr)
1450N/A return (NULL);
1450N/A gfxp_load_kernel_space(paddr, size, mode, addr);
1450N/A iomem = kmem_zalloc(sizeof(*iomem), KM_NOSLEEP);
1450N/A if(!iomem){
1450N/A gfxp_unmap_kernel_space(addr, size);
1450N/A return (NULL);
1450N/A }
1450N/A iomem->addr = addr;
1450N/A iomem->size = size;
1450N/A
1450N/A INIT_LIST_HEAD(&iomem->head);
1450N/A list_add(&iomem->head, &drm_iomem_list, (caddr_t)iomem);
1450N/A
1450N/A return (addr);
1450N/A}
1450N/A
1450N/Avoid
1450N/Adrm_sun_iounmap(void *addr)
1450N/A{
1450N/A struct drm_iomem *iomem;
1450N/A
1450N/A list_for_each_entry(iomem, struct drm_iomem, &drm_iomem_list, head) {
1450N/A if (iomem->addr == addr) {
1450N/A gfxp_unmap_kernel_space(addr, iomem->size);
1450N/A list_del(&iomem->head);
1450N/A kmem_free(iomem, sizeof(*iomem));
1450N/A break;
1450N/A }
1450N/A }
1450N/A}
1450N/A#endif /* x86 */