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path: root/drivers/char/agp/frontend.c
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Diffstat (limited to 'drivers/char/agp/frontend.c')
-rw-r--r--drivers/char/agp/frontend.c90
1 files changed, 50 insertions, 40 deletions
diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
index 0f2ed2aa2d8..b29703324e9 100644
--- a/drivers/char/agp/frontend.c
+++ b/drivers/char/agp/frontend.c
@@ -31,19 +31,20 @@
#include <linux/module.h>
#include <linux/mman.h>
#include <linux/pci.h>
-#include <linux/init.h>
#include <linux/miscdevice.h>
#include <linux/agp_backend.h>
#include <linux/agpgart.h>
#include <linux/slab.h>
#include <linux/mm.h>
+#include <linux/fs.h>
+#include <linux/sched.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include "agp.h"
-static struct agp_front_data agp_fe;
+struct agp_front_data agp_fe;
-static struct agp_memory *agp_find_mem_by_key(int key)
+struct agp_memory *agp_find_mem_by_key(int key)
{
struct agp_memory *curr;
@@ -159,7 +160,7 @@ static pgprot_t agp_convert_mmap_flags(int prot)
return vm_get_page_prot(prot_bits);
}
-static int agp_create_segment(struct agp_client *client, struct agp_region *region)
+int agp_create_segment(struct agp_client *client, struct agp_region *region)
{
struct agp_segment_priv **ret_seg;
struct agp_segment_priv *seg;
@@ -211,7 +212,7 @@ static void agp_insert_into_pool(struct agp_memory * temp)
/* File private list routines */
-static struct agp_file_private *agp_find_private(pid_t pid)
+struct agp_file_private *agp_find_private(pid_t pid)
{
struct agp_file_private *curr;
@@ -266,13 +267,13 @@ static void agp_remove_file_private(struct agp_file_private * priv)
* Wrappers for agp_free_memory & agp_allocate_memory
* These make sure that internal lists are kept updated.
*/
-static void agp_free_memory_wrap(struct agp_memory *memory)
+void agp_free_memory_wrap(struct agp_memory *memory)
{
agp_remove_from_pool(memory);
agp_free_memory(memory);
}
-static struct agp_memory *agp_allocate_memory_wrap(size_t pg_count, u32 type)
+struct agp_memory *agp_allocate_memory_wrap(size_t pg_count, u32 type)
{
struct agp_memory *memory;
@@ -393,7 +394,7 @@ static int agp_remove_controller(struct agp_controller *controller)
if (agp_fe.current_controller == controller) {
agp_fe.current_controller = NULL;
- agp_fe.backend_acquired = FALSE;
+ agp_fe.backend_acquired = false;
agp_backend_release(agp_bridge);
}
kfree(controller);
@@ -441,7 +442,7 @@ static void agp_controller_release_current(struct agp_controller *controller,
}
agp_fe.current_controller = NULL;
- agp_fe.used_by_controller = FALSE;
+ agp_fe.used_by_controller = false;
agp_backend_release(agp_bridge);
}
@@ -484,7 +485,7 @@ static struct agp_controller *agp_find_controller_for_client(pid_t id)
return NULL;
}
-static struct agp_client *agp_find_client_by_pid(pid_t id)
+struct agp_client *agp_find_client_by_pid(pid_t id)
{
struct agp_client *temp;
@@ -509,7 +510,7 @@ static void agp_insert_client(struct agp_client *client)
agp_fe.current_controller->num_clients++;
}
-static struct agp_client *agp_create_client(pid_t id)
+struct agp_client *agp_create_client(pid_t id)
{
struct agp_client *new_client;
@@ -522,7 +523,7 @@ static struct agp_client *agp_create_client(pid_t id)
return new_client;
}
-static int agp_remove_client(pid_t id)
+int agp_remove_client(pid_t id)
{
struct agp_client *client;
struct agp_client *prev_client;
@@ -571,7 +572,7 @@ static int agp_mmap(struct file *file, struct vm_area_struct *vma)
mutex_lock(&(agp_fe.agp_mutex));
- if (agp_fe.backend_acquired != TRUE)
+ if (agp_fe.backend_acquired != true)
goto out_eperm;
if (!(test_bit(AGP_FF_IS_VALID, &priv->access_flags)))
@@ -601,7 +602,8 @@ static int agp_mmap(struct file *file, struct vm_area_struct *vma)
vma->vm_ops = kerninfo.vm_ops;
} else if (io_remap_pfn_range(vma, vma->vm_start,
(kerninfo.aper_base + offset) >> PAGE_SHIFT,
- size, vma->vm_page_prot)) {
+ size,
+ pgprot_writecombine(vma->vm_page_prot))) {
goto out_again;
}
mutex_unlock(&(agp_fe.agp_mutex));
@@ -616,8 +618,9 @@ static int agp_mmap(struct file *file, struct vm_area_struct *vma)
if (kerninfo.vm_ops) {
vma->vm_ops = kerninfo.vm_ops;
} else if (io_remap_pfn_range(vma, vma->vm_start,
- kerninfo.aper_base >> PAGE_SHIFT,
- size, vma->vm_page_prot)) {
+ kerninfo.aper_base >> PAGE_SHIFT,
+ size,
+ pgprot_writecombine(vma->vm_page_prot))) {
goto out_again;
}
mutex_unlock(&(agp_fe.agp_mutex));
@@ -673,24 +676,25 @@ static int agp_open(struct inode *inode, struct file *file)
int minor = iminor(inode);
struct agp_file_private *priv;
struct agp_client *client;
- int rc = -ENXIO;
-
- mutex_lock(&(agp_fe.agp_mutex));
if (minor != AGPGART_MINOR)
- goto err_out;
+ return -ENXIO;
+
+ mutex_lock(&(agp_fe.agp_mutex));
priv = kzalloc(sizeof(struct agp_file_private), GFP_KERNEL);
- if (priv == NULL)
- goto err_out_nomem;
+ if (priv == NULL) {
+ mutex_unlock(&(agp_fe.agp_mutex));
+ return -ENOMEM;
+ }
set_bit(AGP_FF_ALLOW_CLIENT, &priv->access_flags);
priv->my_pid = current->pid;
- if ((current->uid == 0) || (current->suid == 0)) {
+ if (capable(CAP_SYS_RAWIO))
/* Root priv, can be controller */
set_bit(AGP_FF_ALLOW_CONTROLLER, &priv->access_flags);
- }
+
client = agp_find_client_by_pid(current->pid);
if (client != NULL) {
@@ -700,14 +704,10 @@ static int agp_open(struct inode *inode, struct file *file)
file->private_data = (void *) priv;
agp_insert_file_private(priv);
DBG("private=%p, client=%p", priv, client);
- mutex_unlock(&(agp_fe.agp_mutex));
- return 0;
-err_out_nomem:
- rc = -ENOMEM;
-err_out:
mutex_unlock(&(agp_fe.agp_mutex));
- return rc;
+
+ return 0;
}
@@ -730,6 +730,7 @@ static int agpioc_info_wrap(struct agp_file_private *priv, void __user *arg)
agp_copy_info(agp_bridge, &kerninfo);
+ memset(&userinfo, 0, sizeof(userinfo));
userinfo.version.major = kerninfo.version.major;
userinfo.version.minor = kerninfo.version.minor;
userinfo.bridge_id = kerninfo.device->vendor |
@@ -746,7 +747,7 @@ static int agpioc_info_wrap(struct agp_file_private *priv, void __user *arg)
return 0;
}
-static int agpioc_acquire_wrap(struct agp_file_private *priv)
+int agpioc_acquire_wrap(struct agp_file_private *priv)
{
struct agp_controller *controller;
@@ -766,7 +767,7 @@ static int agpioc_acquire_wrap(struct agp_file_private *priv)
atomic_inc(&agp_bridge->agp_in_use);
- agp_fe.backend_acquired = TRUE;
+ agp_fe.backend_acquired = true;
controller = agp_find_controller_by_pid(priv->my_pid);
@@ -776,7 +777,7 @@ static int agpioc_acquire_wrap(struct agp_file_private *priv)
controller = agp_create_controller(priv->my_pid);
if (controller == NULL) {
- agp_fe.backend_acquired = FALSE;
+ agp_fe.backend_acquired = false;
agp_backend_release(agp_bridge);
return -ENOMEM;
}
@@ -789,14 +790,14 @@ static int agpioc_acquire_wrap(struct agp_file_private *priv)
return 0;
}
-static int agpioc_release_wrap(struct agp_file_private *priv)
+int agpioc_release_wrap(struct agp_file_private *priv)
{
DBG("");
agp_controller_release_current(agp_fe.current_controller, priv);
return 0;
}
-static int agpioc_setup_wrap(struct agp_file_private *priv, void __user *arg)
+int agpioc_setup_wrap(struct agp_file_private *priv, void __user *arg)
{
struct agp_setup mode;
@@ -876,7 +877,7 @@ static int agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
return -EINVAL;
}
-static int agpioc_protect_wrap(struct agp_file_private *priv)
+int agpioc_protect_wrap(struct agp_file_private *priv)
{
DBG("");
/* This function is not currently implemented */
@@ -892,6 +893,9 @@ static int agpioc_allocate_wrap(struct agp_file_private *priv, void __user *arg)
if (copy_from_user(&alloc, arg, sizeof(struct agp_allocate)))
return -EFAULT;
+ if (alloc.type >= AGP_USER_TYPES)
+ return -EINVAL;
+
memory = agp_allocate_memory_wrap(alloc.pg_count, alloc.type);
if (memory == NULL)
@@ -907,7 +911,7 @@ static int agpioc_allocate_wrap(struct agp_file_private *priv, void __user *arg)
return 0;
}
-static int agpioc_deallocate_wrap(struct agp_file_private *priv, int arg)
+int agpioc_deallocate_wrap(struct agp_file_private *priv, int arg)
{
struct agp_memory *memory;
@@ -955,7 +959,7 @@ static int agpioc_unbind_wrap(struct agp_file_private *priv, void __user *arg)
return agp_unbind_memory(memory);
}
-static int agp_ioctl(struct inode *inode, struct file *file,
+static long agp_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct agp_file_private *curr_priv = file->private_data;
@@ -969,7 +973,7 @@ static int agp_ioctl(struct inode *inode, struct file *file,
ret_val = -EINVAL;
goto ioctl_out;
}
- if ((agp_fe.backend_acquired != TRUE) &&
+ if ((agp_fe.backend_acquired != true) &&
(cmd != AGPIOC_ACQUIRE)) {
ret_val = -EBUSY;
goto ioctl_out;
@@ -1028,6 +1032,9 @@ static int agp_ioctl(struct inode *inode, struct file *file,
case AGPIOC_UNBIND:
ret_val = agpioc_unbind_wrap(curr_priv, (void __user *) arg);
break;
+
+ case AGPIOC_CHIPSET_FLUSH:
+ break;
}
ioctl_out:
@@ -1042,7 +1049,10 @@ static const struct file_operations agp_fops =
.llseek = no_llseek,
.read = agp_read,
.write = agp_write,
- .ioctl = agp_ioctl,
+ .unlocked_ioctl = agp_ioctl,
+#ifdef CONFIG_COMPAT
+ .compat_ioctl = compat_agp_ioctl,
+#endif
.mmap = agp_mmap,
.open = agp_open,
.release = agp_release,
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-06 11:40:57 +0000