/*
* Copyright (c) 2007, Intel Corporation.
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* Authors: Thomas Hellstrom <thomas-at-tungstengraphics.com>
*/
#include <drm/drmP.h>
#include "psb_drv.h"
#include "psb_pvr_glue.h"
static inline uint32_t psb_gtt_mask_pte(uint32_t pfn, int type)
{
uint32_t mask = PSB_PTE_VALID;
if (type & PSB_MMU_CACHED_MEMORY)
mask |= PSB_PTE_CACHED;
if (type & PSB_MMU_RO_MEMORY)
mask |= PSB_PTE_RO;
if (type & PSB_MMU_WO_MEMORY)
mask |= PSB_PTE_WO;
return (pfn << PAGE_SHIFT) | mask;
}
struct psb_gtt *psb_gtt_alloc(struct drm_device *dev)
{
struct psb_gtt *tmp = kzalloc(sizeof(*tmp), GFP_KERNEL);
if (!tmp)
return NULL;
init_rwsem(&tmp->sem);
tmp->dev = dev;
return tmp;
}
void psb_gtt_takedown(struct psb_gtt *pg, int free)
{
struct drm_psb_private *dev_priv = pg->dev->dev_private;
if (!pg)
return;
if (pg->gtt_map) {
iounmap(pg->gtt_map);
pg->gtt_map = NULL;
}
if (pg->initialized) {
pci_write_config_word(pg->dev->pdev, PSB_GMCH_CTRL,
pg->gmch_ctrl);
PSB_WVDC32(pg->pge_ctl, PSB_PGETBL_CTL);
(void) PSB_RVDC32(PSB_PGETBL_CTL);
}
if (free)
kfree(pg);
}
int psb_gtt_init(struct psb_gtt *pg, int resume)
{
struct drm_device *dev = pg->dev;
struct drm_psb_private *dev_priv = dev->dev_private;
unsigned gtt_pages;
unsigned long stolen_size, vram_stolen_size, ci_stolen_size;
unsigned long rar_stolen_size;
unsigned i, num_pages;
unsigned pfn_base;
uint32_t ci_pages, vram_pages;
uint32_t tt_pages;
uint32_t *ttm_gtt_map;
uint32_t dvmt_mode = 0;
int ret = 0;
uint32_t pte;
pci_read_config_word(dev->pdev, PSB_GMCH_CTRL, &pg->gmch_ctrl);
pci_write_config_word(dev->pdev, PSB_GMCH_CTRL,
pg->gmch_ctrl | _PSB_GMCH_ENABLED);
pg->pge_ctl = PSB_RVDC32(PSB_PGETBL_CTL);
PSB_WVDC32(pg->pge_ctl | _PSB_PGETBL_ENABLED, PSB_PGETBL_CTL);
(void) PSB_RVDC32(PSB_PGETBL_CTL);
pg->initialized = 1;
pg->gtt_phys_start = pg->pge_ctl & PAGE_MASK;
pg->gatt_start = pci_resource_start(dev->pdev, PSB_GATT_RESOURCE);
/* fix me: video mmu has hw bug to access 0x0D0000000,
* then make gatt start at 0x0e000,0000 */
pg->mmu_gatt_start = PSB_MEM_TT_START;
pg->gtt_start = pci_resource_start(dev->pdev, PSB_GTT_RESOURCE);
gtt_pages =
pci_resource_len(dev->pdev, PSB_GTT_RESOURCE) >> PAGE_SHIFT;
pg->gatt_pages = pci_resource_len(dev->pdev, PSB_GATT_RESOURCE)
>> PAGE_SHIFT;
pci_read_config_dword(dev->pdev, PSB_BSM, &pg->stolen_base);
vram_stolen_size = pg->gtt_phys_start - pg->stolen_base - PAGE_SIZE;
/* CI is not included in the stolen size since the TOPAZ MMU bug */
ci_stolen_size = dev_priv->ci_region_size;
/* Don't add CI & RAR share buffer space
* managed by TTM to stolen_size */
stolen_size = vram_stolen_size;
rar_stolen_size = dev_priv->rar_region_size;
printk(KERN_INFO"GMMADR(region 0) start: 0x%08x (%dM).\n",
pg->gatt_start, pg->gatt_pages/256);
printk(KERN_INFO"GTTADR(region 3) start: 0x%08x (can map %dM RAM), and actual RAM base 0x%08x.\n",
pg->gtt_start, gtt_pages * 4, pg->gtt_phys_start);
printk(KERN_INFO "Stole memory information\n");
printk(KERN_INFO " base in RAM: 0x%x\n", pg->stolen_base);
printk(KERN_INFO " size: %luK, calculated by (GTT RAM base) - (Stolen base), seems wrong\n",
vram_stolen_size/1024);
dvmt_mode = (pg->gmch_ctrl >> 4) & 0x7;
printk(KERN_INFO " the correct size should be: %dM(dvmt mode=%d)\n",
(dvmt_mode == 1) ? 1 : (2 << (dvmt_mode - 1)), dvmt_mode);
if (ci_stolen_size > 0)
printk(KERN_INFO"CI Stole memory: RAM base = 0x%08x, size = %lu M\n",
dev_priv->ci_region_start,
ci_stolen_size / 1024 / 1024);
if (rar_stolen_size > 0)
printk(KERN_INFO "RAR Stole memory: RAM base = 0x%08x, size = %lu M\n",
dev_priv->rar_region_start,
rar_stolen_size / 1024 / 1024);
if (resume && (gtt_pages != pg->gtt_pages) &&
(stolen_size != pg->stolen_size)) {
DRM_ERROR("GTT resume error.\n");
ret = -EINVAL;
goto out_err;
}
pg->gtt_pages = gtt_pages;
pg->stolen_size = stolen_size;
pg->vram_stolen_size = vram_stolen_size;
pg->ci_stolen_size = ci_stolen_size;
pg->rar_stolen_size = rar_stolen_size;
pg->gtt_map =
ioremap_nocache(pg->gtt_phys_start, gtt_pages << PAGE_SHIFT);
if (!pg->gtt_map) {
DRM_ERROR("Failure to map gtt.\n");
ret = -ENOMEM;
goto out_err;
}
pg->vram_addr = ioremap_wc(pg->stolen_base, stolen_size);
if (!pg->vram_addr) {
DRM_ERROR("Failure to map stolen base.\n");
ret = -ENOMEM;
goto out_err;
}
DRM_DEBUG("%s: vram kernel virtual address %p\n", pg->vram_addr);
tt_pages = (pg->gatt_pages < PSB_TT_PRIV0_PLIMIT) ?
(pg->gatt_pages) : PSB_TT_PRIV0_PLIMIT;
ttm_gtt_map = pg->gtt_map + tt_pages / 2;
/*
* insert vram stolen pages.
*/
pfn_base = pg->stolen_base >> PAGE_SHIFT;
vram_pages = num_pages = vram_stolen_size >> PAGE_SHIFT;
printk(KERN_INFO"Set up %d stolen pages starting at 0x%08x, GTT offset %dK\n",
num_pages, pfn_base, 0);
for (i = 0; i < num_pages; ++i) {
pte = psb_gtt_mask_pte(pfn_base + i, 0);
iowrite32(pte, pg->gtt_map + i);
}
/*
* Init rest of gtt managed by IMG.
*/
pfn_base = page_to_pfn(dev_priv->scratch_page);
pte = psb_gtt_mask_pte(pfn_base, 0);
for (; i < tt_pages / 2 - 1; ++i)
iowrite32(pte, pg->gtt_map + i);
/*
* insert CI stolen pages
*/
pfn_base = dev_priv->ci_region_start >> PAGE_SHIFT;
ci_pages = num_pages = ci_stolen_size >> PAGE_SHIFT;
printk(KERN_INFO"Set up %d CI stolen pages starting at 0x%08x, GTT offset %dK\n",
num_pages, pfn_base, (ttm_gtt_map - pg->gtt_map) * 4);
for (i = 0; i < num_pages; ++i) {
pte = psb_gtt_mask_pte(pfn_base + i, 0);
iowrite32(pte, ttm_gtt_map + i);
}
/*
* insert RAR stolen pages
*/
if (rar_stolen_size != 0) {
pfn_base = dev_priv->rar_region_start >> PAGE_SHIFT;
num_pages = rar_stolen_size >> PAGE_SHIFT;
printk(KERN_INFO"Set up %d RAR stolen pages starting at 0x%08x, GTT offset %dK\n",
num_pages, pfn_base,
(ttm_gtt_map - pg->gtt_map + i) * 4);
for (; i < num_pages + ci_pages; ++i) {
pte = psb_gtt_mask_pte(pfn_base + i - ci_pages, 0);
iowrite32(pte, ttm_gtt_map + i);
}
}
/*
* Init rest of gtt managed by TTM.
*/
pfn_base = page_to_pfn(dev_priv->scratch_page);
pte = psb_gtt_mask_pte(pfn_base, 0);
PSB_DEBUG_INIT("Initializing the rest of a total "
"of %d gtt pages.\n", pg->gatt_pages);
for (; i < pg->gatt_pages - tt_pages / 2; ++i)
iowrite32(pte, ttm_gtt_map + i);
(void) ioread32(pg->gtt_map + i - 1);
return 0;
out_err:
psb_gtt_takedown(pg, 0);
return ret;
}
int psb_gtt_insert_pages(struct psb_gtt *pg, struct page **pages,
unsigned offset_pages, unsigned num_pages,
unsigned desired_tile_stride,
unsigned hw_tile_stride, int type)
{
unsigned rows = 1;
unsigned add;
unsigned row_add;
unsigned i;
unsigned j;
uint32_t *cur_page = NULL;
uint32_t pte;
if (hw_tile_stride)
rows = num_pages / desired_tile_stride;
else
desired_tile_stride = num_pages;
add = desired_tile_stride;
row_add = hw_tile_stride;
down_read(&pg->sem);
for (i = 0; i < rows; ++i) {
cur_page = pg->gtt_map + offset_pages;
for (j = 0; j < desired_tile_stride; ++j) {
pte =
psb_gtt_mask_pte(page_to_pfn(*pages++), type);
iowrite32(pte, cur_page++);
}
offset_pages += add;
}
(void) ioread32(cur_page - 1);
up_read(&pg->sem);
return 0;
}
int psb_gtt_insert_phys_addresses(struct psb_gtt *pg, dma_addr_t *pPhysFrames,
unsigned offset_pages, unsigned num_pages, int type)
{
unsigned j;
uint32_t *cur_page = NULL;
uint32_t pte;
u32 ba;
down_read(&pg->sem);
cur_page = pg->gtt_map + offset_pages;
for (j = 0; j < num_pages; ++j) {
ba = *pPhysFrames++;
pte = psb_gtt_mask_pte(ba >> PAGE_SHIFT, type);
iowrite32(pte, cur_page++);
}
(void) ioread32(cur_page - 1);
up_read(&pg->sem);
return 0;
}
int psb_gtt_remove_pages(struct psb_gtt *pg, unsigned offset_pages,
unsigned num_pages, unsigned desired_tile_stride,
unsigned hw_tile_stride, int rc_prot)
{
struct drm_psb_private *dev_priv = pg->dev->dev_private;
unsigned rows = 1;
unsigned add;
unsigned row_add;
unsigned i;
unsigned j;
uint32_t *cur_page = NULL;
unsigned pfn_base = page_to_pfn(dev_priv->scratch_page);
uint32_t pte = psb_gtt_mask_pte(pfn_base, 0);
if (hw_tile_stride)
rows = num_pages / desired_tile_stride;
else
desired_tile_stride = num_pages;
add = desired_tile_stride;
row_add = hw_tile_stride;
if (rc_prot)
down_read(&pg->sem);
for (i = 0; i < rows; ++i) {
cur_page = pg->gtt_map + offset_pages;
for (j = 0; j < desired_tile_stride; ++j)
iowrite32(pte, cur_page++);
offset_pages += add;
}
(void) ioread32(cur_page - 1);
if (rc_prot)
up_read(&pg->sem);
return 0;
}
int psb_gtt_mm_init(struct psb_gtt *pg)
{
struct psb_gtt_mm *gtt_mm;
struct drm_psb_private *dev_priv = pg->dev->dev_private;
struct drm_open_hash *ht;
struct drm_mm *mm;
int ret;
uint32_t tt_start;
uint32_t tt_size;
if (!pg || !pg->initialized) {
DRM_DEBUG("Invalid gtt struct\n");
return -EINVAL;
}
gtt_mm = kzalloc(sizeof(struct psb_gtt_mm), GFP_KERNEL);
if (!gtt_mm)
return -ENOMEM;
spin_lock_init(>t_mm->lock);
ht = >t_mm->hash;
ret = drm_ht_create(ht, 20);
if (ret) {
DRM_DEBUG("Create hash table failed(%d)\n", ret);
goto err_free;
}
tt_start = (pg->stolen_size + PAGE_SIZE - 1) >> PAGE_SHIFT;
tt_start = (tt_start < pg->gatt_pages) ? tt_start : pg->gatt_pages;
tt_size = (pg->gatt_pages < PSB_TT_PRIV0_PLIMIT) ?
(pg->gatt_pages) : PSB_TT_PRIV0_PLIMIT;
mm = >t_mm->base;
/*will use tt_start ~ 128M for IMG TT buffers*/
ret = drm_mm_init(mm, tt_start, ((tt_size / 2) - tt_start));
if (ret) {
DRM_DEBUG("drm_mm_int error(%d)\n", ret);
goto err_mm_init;
}
gtt_mm->count = 0;
dev_priv->gtt_mm = gtt_mm;
DRM_INFO("PSB GTT mem manager ready, tt_start %ld, tt_size %ld pages\n",
(unsigned long)tt_start,
(unsigned long)((tt_size / 2) - tt_start));
return 0;
err_mm_init:
drm_ht_remove(ht);
err_free:
kfree(gtt_mm);
return ret;
}
/**
* Delete all hash entries;
*/
void psb_gtt_mm_takedown(void)
{
return;
}
static int psb_gtt_mm_get_ht_by_pid_locked(struct psb_gtt_mm *mm,
u32 tgid,
struct psb_gtt_hash_entry **hentry)
{
struct drm_hash_item *entry;
struct psb_gtt_hash_entry *psb_entry;
int ret;
ret = drm_ht_find_item(&mm->hash, tgid, &entry);
if (ret) {
DRM_DEBUG("Cannot find entry pid=%ld\n", tgid);
return ret;
}
psb_entry = container_of(entry, struct psb_gtt_hash_entry, item);
if (!psb_entry) {
DRM_DEBUG("Invalid entry");
return -EINVAL;
}
*hentry = psb_entry;
return 0;
}
static int psb_gtt_mm_insert_ht_locked(struct psb_gtt_mm *mm,
u32 tgid,
struct psb_gtt_hash_entry *hentry)
{
struct drm_hash_item *item;
int ret;
if (!hentry) {
DRM_DEBUG("Invalid parameters\n");
return -EINVAL;
}
item = &hentry->item;
item->key = tgid;
/**
* NOTE: drm_ht_insert_item will perform such a check
ret = psb_gtt_mm_get_ht_by_pid(mm, tgid, &tmp);
if (!ret) {
DRM_DEBUG("Entry already exists for pid %ld\n", tgid);
return -EAGAIN;
}
*/
/*Insert the given entry*/
ret = drm_ht_insert_item(&mm->hash, item);
if (ret) {
DRM_DEBUG("Insert failure\n");
return ret;
}
mm->count++;
return 0;
}
static int psb_gtt_mm_alloc_insert_ht(struct psb_gtt_mm *mm,
u32 tgid,
struct psb_gtt_hash_entry **entry)
{
struct psb_gtt_hash_entry *hentry;
int ret;
/*if the hentry for this tgid exists, just get it and return*/
spin_lock(&mm->lock);
ret = psb_gtt_mm_get_ht_by_pid_locked(mm, tgid, &hentry);
if (!ret) {
DRM_DEBUG("Entry for tgid %ld exist, hentry %p\n",
tgid, hentry);
*entry = hentry;
spin_unlock(&mm->lock);
return 0;
}
spin_unlock(&mm->lock);
DRM_DEBUG("Entry for tgid %ld doesn't exist, will create it\n", tgid);
hentry = kzalloc(sizeof(struct psb_gtt_hash_entry), GFP_KERNEL);
if (!hentry) {
DRM_DEBUG("Kmalloc failled\n");
return -ENOMEM;
}
ret = drm_ht_create(&hentry->ht, 20);
if (ret) {
DRM_DEBUG("Create hash table failed\n");
return ret;
}
spin_lock(&mm->lock);
ret = psb_gtt_mm_insert_ht_locked(mm, tgid, hentry);
spin_unlock(&mm->lock);
if (!ret)
*entry = hentry;
return ret;
}
static struct psb_gtt_hash_entry *
psb_gtt_mm_remove_ht_locked(struct psb_gtt_mm *mm, u32 tgid)
{
struct psb_gtt_hash_entry *tmp;
int ret;
ret = psb_gtt_mm_get_ht_by_pid_locked(mm, tgid, &tmp);
if (ret) {
DRM_DEBUG("Cannot find entry pid %ld\n", tgid);
return NULL;
}
/*remove it from ht*/
drm_ht_remove_item(&mm->hash, &tmp->item);
mm->count--;
return tmp;
}
static int psb_gtt_mm_remove_free_ht_locked(struct psb_gtt_mm *mm, u32 tgid)
{
struct psb_gtt_hash_entry *entry;
entry = psb_gtt_mm_remove_ht_locked(mm, tgid);
if (!entry) {
DRM_DEBUG("Invalid entry");
return -EINVAL;
}
/*delete ht*/
drm_ht_remove(&entry->ht);
/*free this entry*/
kfree(entry);
return 0;
}
static int
psb_gtt_mm_get_mem_mapping_locked(struct drm_open_hash *ht,
u32 key,
struct psb_gtt_mem_mapping **hentry)
{
struct drm_hash_item *entry;
struct psb_gtt_mem_mapping *mapping;
int ret;
ret = drm_ht_find_item(ht, key, &entry);
if (ret) {
DRM_DEBUG("Cannot find key %ld\n", key);
return ret;
}
mapping = container_of(entry, struct psb_gtt_mem_mapping, item);
if (!mapping) {
DRM_DEBUG("Invalid entry\n");
return -EINVAL;
}
*hentry = mapping;
return 0;
}
static int
psb_gtt_mm_insert_mem_mapping_locked(struct drm_open_hash *ht,
u32 key,
struct psb_gtt_mem_mapping *hentry)
{
struct drm_hash_item *item;
struct psb_gtt_hash_entry *entry;
int ret;
if (!hentry) {
DRM_DEBUG("hentry is NULL\n");
return -EINVAL;
}
item = &hentry->item;
item->key = key;
ret = drm_ht_insert_item(ht, item);
if (ret) {
DRM_DEBUG("insert_item failed\n");
return ret;
}
entry = container_of(ht, struct psb_gtt_hash_entry, ht);
if (entry)
entry->count++;
return 0;
}
static int
psb_gtt_mm_alloc_insert_mem_mapping(struct psb_gtt_mm *mm,
struct drm_open_hash *ht,
u32 key,
struct drm_mm_node *node,
struct psb_gtt_mem_mapping **entry)
{
struct psb_gtt_mem_mapping *mapping;
int ret;
if (!node || !ht) {
DRM_DEBUG("parameter error\n");
return -EINVAL;
}
/*try to get this mem_map */
spin_lock(&mm->lock);
ret = psb_gtt_mm_get_mem_mapping_locked(ht, key, &mapping);
if (!ret) {
DRM_DEBUG("mapping entry for key %ld exists, entry %p\n",
key, mapping);
*entry = mapping;
spin_unlock(&mm->lock);
return 0;
}
spin_unlock(&mm->lock);
DRM_DEBUG("Mapping entry for key %ld doesn't exist, will create it\n",
key);
mapping = kzalloc(sizeof(struct psb_gtt_mem_mapping), GFP_KERNEL);
if (!mapping) {
DRM_DEBUG("kmalloc failed\n");
return -ENOMEM;
}
mapping->node = node;
spin_lock(&mm->lock);
ret = psb_gtt_mm_insert_mem_mapping_locked(ht, key, mapping);
spin_unlock(&mm->lock);
if (!ret)
*entry = mapping;
return ret;
}
static struct psb_gtt_mem_mapping *
psb_gtt_mm_remove_mem_mapping_locked(struct drm_open_hash *ht, u32 key)
{
struct psb_gtt_mem_mapping *tmp;
struct psb_gtt_hash_entry *entry;
int ret;
ret = psb_gtt_mm_get_mem_mapping_locked(ht, key, &tmp);
if (ret) {
DRM_DEBUG("Cannot find key %ld\n", key);
return NULL;
}
drm_ht_remove_item(ht, &tmp->item);
entry = container_of(ht, struct psb_gtt_hash_entry, ht);
if (entry)
entry->count--;
return tmp;
}
static int psb_gtt_mm_remove_free_mem_mapping_locked(struct drm_open_hash *ht,
u32 key,
struct drm_mm_node **node)
{
struct psb_gtt_mem_mapping *entry;
entry = psb_gtt_mm_remove_mem_mapping_locked(ht, key);
if (!entry) {
DRM_DEBUG("entry is NULL\n");
return -EINVAL;
}
*node = entry->node;
kfree(entry);
return 0;
}
static int psb_gtt_add_node(struct psb_gtt_mm *mm,
u32 tgid,
u32 key,
struct drm_mm_node *node,
struct psb_gtt_mem_mapping **entry)
{
struct psb_gtt_hash_entry *hentry;
struct psb_gtt_mem_mapping *mapping;
int ret;
ret = psb_gtt_mm_alloc_insert_ht(mm, tgid, &hentry);
if (ret) {
DRM_DEBUG("alloc_insert failed\n");
return ret;
}
ret = psb_gtt_mm_alloc_insert_mem_mapping(mm,
&hentry->ht,
key,
node,
&mapping);
if (ret) {
DRM_DEBUG("mapping alloc_insert failed\n");
return ret;
}
*entry = mapping;
return 0;
}
static int psb_gtt_remove_node(struct psb_gtt_mm *mm,
u32 tgid,
u32 key,
struct drm_mm_node **node)
{
struct psb_gtt_hash_entry *hentry;
struct drm_mm_node *tmp;
int ret;
spin_lock(&mm->lock);
ret = psb_gtt_mm_get_ht_by_pid_locked(mm, tgid, &hentry);
if (ret) {
DRM_DEBUG("Cannot find entry for pid %ld\n", tgid);
spin_unlock(&mm->lock);
return ret;
}
spin_unlock(&mm->lock);
/*remove mapping entry*/
spin_lock(&mm->lock);
ret = psb_gtt_mm_remove_free_mem_mapping_locked(&hentry->ht,
key,
&tmp);
if (ret) {
DRM_DEBUG("remove_free failed\n");
spin_unlock(&mm->lock);
return ret;
}
*node = tmp;
/*check the count of mapping entry*/
if (!hentry->count) {
DRM_DEBUG("count of mapping entry is zero, tgid=%ld\n", tgid);
psb_gtt_mm_remove_free_ht_locked(mm, tgid);
}
spin_unlock(&mm->lock);
return 0;
}
static int psb_gtt_mm_alloc_mem(struct psb_gtt_mm *mm,
uint32_t pages,
uint32_t align,
struct drm_mm_node **node)
{
struct drm_mm_node *tmp_node;
int ret;
do {
ret = drm_mm_pre_get(&mm->base);
if (unlikely(ret)) {
DRM_DEBUG("drm_mm_pre_get error\n");
return ret;
}
spin_lock(&mm->lock);
tmp_node = drm_mm_search_free(&mm->base, pages, align, 1);
if (unlikely(!tmp_node)) {
DRM_DEBUG("No free node found\n");
spin_unlock(&mm->lock);
break;
}
tmp_node = drm_mm_get_block_atomic(tmp_node, pages, align);
spin_unlock(&mm->lock);
} while (!tmp_node);
if (!tmp_node) {
DRM_DEBUG("Node allocation failed\n");
return -ENOMEM;
}
*node = tmp_node;
return 0;
}
static void psb_gtt_mm_free_mem(struct psb_gtt_mm *mm, struct drm_mm_node *node)
{
spin_lock(&mm->lock);
drm_mm_put_block(node);
spin_unlock(&mm->lock);
}
int psb_gtt_map_meminfo(struct drm_device *dev,
void *hKernelMemInfo,
uint32_t *offset)
{
return -EINVAL;
/* FIXMEAC */
#if 0
struct drm_psb_private *dev_priv
= (struct drm_psb_private *)dev->dev_private;
void *psKernelMemInfo;
struct psb_gtt_mm *mm = dev_priv->gtt_mm;
struct psb_gtt *pg = dev_priv->pg;
uint32_t size, pages, offset_pages;
void *kmem;
struct drm_mm_node *node;
struct page **page_list;
struct psb_gtt_mem_mapping *mapping = NULL;
int ret;
ret = psb_get_meminfo_by_handle(hKernelMemInfo, &psKernelMemInfo);
if (ret) {
DRM_DEBUG("Cannot find kernelMemInfo handle %ld\n",
hKernelMemInfo);
return -EINVAL;
}
DRM_DEBUG("Got psKernelMemInfo %p for handle %lx\n",
psKernelMemInfo, (u32)hKernelMemInfo);
size = psKernelMemInfo->ui32AllocSize;
kmem = psKernelMemInfo->pvLinAddrKM;
pages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT;
DRM_DEBUG("KerMemInfo size %ld, cpuVadr %lx, pages %ld, osMemHdl %lx\n",
size, kmem, pages, psKernelMemInfo->sMemBlk.hOSMemHandle);
if (!kmem)
DRM_DEBUG("kmem is NULL");
/*get pages*/
ret = psb_get_pages_by_mem_handle(psKernelMemInfo->sMemBlk.hOSMemHandle,
&page_list);
if (ret) {
DRM_DEBUG("get pages error\n");
return ret;
}
DRM_DEBUG("get %ld pages\n", pages);
/*alloc memory in TT apeture*/
ret = psb_gtt_mm_alloc_mem(mm, pages, 0, &node);
if (ret) {
DRM_DEBUG("alloc TT memory error\n");
goto failed_pages_alloc;
}
/*update psb_gtt_mm*/
ret = psb_gtt_add_node(mm,
task_tgid_nr(current),
(u32)hKernelMemInfo,
node,
&mapping);
if (ret) {
DRM_DEBUG("add_node failed");
goto failed_add_node;
}
node = mapping->node;
offset_pages = node->start;
DRM_DEBUG("get free node for %ld pages, offset %ld pages",
pages, offset_pages);
/*update gtt*/
psb_gtt_insert_pages(pg, page_list,
(unsigned)offset_pages,
(unsigned)pages,
0,
0,
0);
*offset = offset_pages;
return 0;
failed_add_node:
psb_gtt_mm_free_mem(mm, node);
failed_pages_alloc:
kfree(page_list);
return ret;
#endif
}
int psb_gtt_unmap_meminfo(struct drm_device *dev, void * hKernelMemInfo)
{
struct drm_psb_private *dev_priv
= (struct drm_psb_private *)dev->dev_private;
struct psb_gtt_mm *mm = dev_priv->gtt_mm;
struct psb_gtt *pg = dev_priv->pg;
uint32_t pages, offset_pages;
struct drm_mm_node *node;
int ret;
ret = psb_gtt_remove_node(mm,
task_tgid_nr(current),
(u32)hKernelMemInfo,
&node);
if (ret) {
DRM_DEBUG("remove node failed\n");
return ret;
}
/*remove gtt entries*/
offset_pages = node->start;
pages = node->size;
psb_gtt_remove_pages(pg, offset_pages, pages, 0, 0, 1);
/*free tt node*/
psb_gtt_mm_free_mem(mm, node);
return 0;
}
int psb_gtt_map_meminfo_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct psb_gtt_mapping_arg *arg
= (struct psb_gtt_mapping_arg *)data;
uint32_t *offset_pages = &arg->offset_pages;
DRM_DEBUG("\n");
return psb_gtt_map_meminfo(dev, arg->hKernelMemInfo, offset_pages);
}
int psb_gtt_unmap_meminfo_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
struct psb_gtt_mapping_arg *arg
= (struct psb_gtt_mapping_arg *)data;
DRM_DEBUG("\n");
return psb_gtt_unmap_meminfo(dev, arg->hKernelMemInfo);
}
int psb_gtt_map_pvr_memory(struct drm_device *dev, unsigned int hHandle,
unsigned int ui32TaskId, dma_addr_t *pPages,
unsigned int ui32PagesNum, unsigned int *ui32Offset)
{
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_gtt_mm *mm = dev_priv->gtt_mm;
struct psb_gtt *pg = dev_priv->pg;
uint32_t size, pages, offset_pages;
struct drm_mm_node *node = NULL;
struct psb_gtt_mem_mapping *mapping = NULL;
int ret;
size = ui32PagesNum * PAGE_SIZE;
pages = 0;
/*alloc memory in TT apeture*/
ret = psb_gtt_mm_alloc_mem(mm, ui32PagesNum, 0, &node);
if (ret) {
DRM_DEBUG("alloc TT memory error\n");
goto failed_pages_alloc;
}
/*update psb_gtt_mm*/
ret = psb_gtt_add_node(mm,
(u32)ui32TaskId,
(u32)hHandle,
node,
&mapping);
if (ret) {
DRM_DEBUG("add_node failed");
goto failed_add_node;
}
node = mapping->node;
offset_pages = node->start;
DRM_DEBUG("get free node for %ld pages, offset %ld pages",
pages, offset_pages);
/*update gtt*/
psb_gtt_insert_phys_addresses(pg, pPages, (unsigned)offset_pages,
(unsigned)ui32PagesNum, 0);
*ui32Offset = offset_pages;
return 0;
failed_add_node:
psb_gtt_mm_free_mem(mm, node);
failed_pages_alloc:
return ret;
}
int psb_gtt_unmap_pvr_memory(struct drm_device *dev, unsigned int hHandle,
unsigned int ui32TaskId)
{
struct drm_psb_private *dev_priv = dev->dev_private;
struct psb_gtt_mm *mm = dev_priv->gtt_mm;
struct psb_gtt *pg = dev_priv->pg;
uint32_t pages, offset_pages;
struct drm_mm_node *node;
int ret;
ret = psb_gtt_remove_node(mm, (u32)ui32TaskId, (u32)hHandle, &node);
if (ret) {
printk(KERN_ERR "remove node failed\n");
return ret;
}
/*remove gtt entries*/
offset_pages = node->start;
pages = node->size;
psb_gtt_remove_pages(pg, offset_pages, pages, 0, 0, 1);
/*free tt node*/
psb_gtt_mm_free_mem(mm, node);
return 0;
}