Commit 0316fe83 authored by Zwane Mwaikambo's avatar Zwane Mwaikambo Committed by Dave Jones

[AGPGART] compat ioctl

The following video card requires the agpgart driver ioctl
interface in order to detect video memory.

00:02.0 VGA compatible controller: Intel Corporation Mobile
945GM/GMS/940GML Express Integrated Graphics Controller (rev 03)

Tested on a Thinkpad Z61t, Xorg.0.log from a 32bit debian Xorg is at;

http://montezuma.homeunix.net/Xorg.0.logSigned-off-by: default avatarZwane Mwaikambo <zwane@infradead.org>
Signed-off-by: default avatarDave Jones <davej@redhat.com>
parent ce35a81a
agpgart-y := backend.o frontend.o generic.o isoch.o agpgart-y := backend.o frontend.o generic.o isoch.o
obj-$(CONFIG_AGP) += agpgart.o obj-$(CONFIG_AGP) += agpgart.o
obj-$(CONFIG_COMPAT) += compat_ioctl.o
obj-$(CONFIG_AGP_ALI) += ali-agp.o obj-$(CONFIG_AGP_ALI) += ali-agp.o
obj-$(CONFIG_AGP_ATI) += ati-agp.o obj-$(CONFIG_AGP_ATI) += ati-agp.o
obj-$(CONFIG_AGP_AMD) += amd-k7-agp.o obj-$(CONFIG_AGP_AMD) += amd-k7-agp.o
......
...@@ -288,6 +288,8 @@ extern struct aper_size_info_16 agp3_generic_sizes[]; ...@@ -288,6 +288,8 @@ extern struct aper_size_info_16 agp3_generic_sizes[];
extern int agp_off; extern int agp_off;
extern int agp_try_unsupported_boot; extern int agp_try_unsupported_boot;
long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
/* Chipset independant registers (from AGP Spec) */ /* Chipset independant registers (from AGP Spec) */
#define AGP_APBASE 0x10 #define AGP_APBASE 0x10
......
/*
* AGPGART driver frontend compatibility ioctls
* Copyright (C) 2004 Silicon Graphics, Inc.
* Copyright (C) 2002-2003 Dave Jones
* Copyright (C) 1999 Jeff Hartmann
* Copyright (C) 1999 Precision Insight, Inc.
* Copyright (C) 1999 Xi Graphics, Inc.
*
* 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 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
* JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS 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.
*
*/
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/agpgart.h>
#include <asm/uaccess.h>
#include "agp.h"
#include "compat_ioctl.h"
static int compat_agpioc_info_wrap(struct agp_file_private *priv, void __user *arg)
{
struct agp_info32 userinfo;
struct agp_kern_info kerninfo;
agp_copy_info(agp_bridge, &kerninfo);
userinfo.version.major = kerninfo.version.major;
userinfo.version.minor = kerninfo.version.minor;
userinfo.bridge_id = kerninfo.device->vendor |
(kerninfo.device->device << 16);
userinfo.agp_mode = kerninfo.mode;
userinfo.aper_base = (compat_long_t)kerninfo.aper_base;
userinfo.aper_size = kerninfo.aper_size;
userinfo.pg_total = userinfo.pg_system = kerninfo.max_memory;
userinfo.pg_used = kerninfo.current_memory;
if (copy_to_user(arg, &userinfo, sizeof(userinfo)))
return -EFAULT;
return 0;
}
static int compat_agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
{
struct agp_region32 ureserve;
struct agp_region kreserve;
struct agp_client *client;
struct agp_file_private *client_priv;
DBG("");
if (copy_from_user(&ureserve, arg, sizeof(ureserve)))
return -EFAULT;
if ((unsigned) ureserve.seg_count >= ~0U/sizeof(struct agp_segment32))
return -EFAULT;
kreserve.pid = ureserve.pid;
kreserve.seg_count = ureserve.seg_count;
client = agp_find_client_by_pid(kreserve.pid);
if (kreserve.seg_count == 0) {
/* remove a client */
client_priv = agp_find_private(kreserve.pid);
if (client_priv != NULL) {
set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags);
set_bit(AGP_FF_IS_VALID, &client_priv->access_flags);
}
if (client == NULL) {
/* client is already removed */
return 0;
}
return agp_remove_client(kreserve.pid);
} else {
struct agp_segment32 *usegment;
struct agp_segment *ksegment;
int seg;
if (ureserve.seg_count >= 16384)
return -EINVAL;
usegment = kmalloc(sizeof(*usegment) * ureserve.seg_count, GFP_KERNEL);
if (!usegment)
return -ENOMEM;
ksegment = kmalloc(sizeof(*ksegment) * kreserve.seg_count, GFP_KERNEL);
if (!ksegment) {
kfree(usegment);
return -ENOMEM;
}
if (copy_from_user(usegment, (void __user *) ureserve.seg_list,
sizeof(*usegment) * ureserve.seg_count)) {
kfree(usegment);
kfree(ksegment);
return -EFAULT;
}
for (seg = 0; seg < ureserve.seg_count; seg++) {
ksegment[seg].pg_start = usegment[seg].pg_start;
ksegment[seg].pg_count = usegment[seg].pg_count;
ksegment[seg].prot = usegment[seg].prot;
}
kfree(usegment);
kreserve.seg_list = ksegment;
if (client == NULL) {
/* Create the client and add the segment */
client = agp_create_client(kreserve.pid);
if (client == NULL) {
kfree(ksegment);
return -ENOMEM;
}
client_priv = agp_find_private(kreserve.pid);
if (client_priv != NULL) {
set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags);
set_bit(AGP_FF_IS_VALID, &client_priv->access_flags);
}
}
return agp_create_segment(client, &kreserve);
}
/* Will never really happen */
return -EINVAL;
}
static int compat_agpioc_allocate_wrap(struct agp_file_private *priv, void __user *arg)
{
struct agp_memory *memory;
struct agp_allocate32 alloc;
DBG("");
if (copy_from_user(&alloc, arg, sizeof(alloc)))
return -EFAULT;
memory = agp_allocate_memory_wrap(alloc.pg_count, alloc.type);
if (memory == NULL)
return -ENOMEM;
alloc.key = memory->key;
alloc.physical = memory->physical;
if (copy_to_user(arg, &alloc, sizeof(alloc))) {
agp_free_memory_wrap(memory);
return -EFAULT;
}
return 0;
}
static int compat_agpioc_bind_wrap(struct agp_file_private *priv, void __user *arg)
{
struct agp_bind32 bind_info;
struct agp_memory *memory;
DBG("");
if (copy_from_user(&bind_info, arg, sizeof(bind_info)))
return -EFAULT;
memory = agp_find_mem_by_key(bind_info.key);
if (memory == NULL)
return -EINVAL;
return agp_bind_memory(memory, bind_info.pg_start);
}
static int compat_agpioc_unbind_wrap(struct agp_file_private *priv, void __user *arg)
{
struct agp_memory *memory;
struct agp_unbind32 unbind;
DBG("");
if (copy_from_user(&unbind, arg, sizeof(unbind)))
return -EFAULT;
memory = agp_find_mem_by_key(unbind.key);
if (memory == NULL)
return -EINVAL;
return agp_unbind_memory(memory);
}
long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
struct agp_file_private *curr_priv = file->private_data;
int ret_val = -ENOTTY;
mutex_lock(&(agp_fe.agp_mutex));
if ((agp_fe.current_controller == NULL) &&
(cmd != AGPIOC_ACQUIRE32)) {
ret_val = -EINVAL;
goto ioctl_out;
}
if ((agp_fe.backend_acquired != TRUE) &&
(cmd != AGPIOC_ACQUIRE32)) {
ret_val = -EBUSY;
goto ioctl_out;
}
if (cmd != AGPIOC_ACQUIRE32) {
if (!(test_bit(AGP_FF_IS_CONTROLLER, &curr_priv->access_flags))) {
ret_val = -EPERM;
goto ioctl_out;
}
/* Use the original pid of the controller,
* in case it's threaded */
if (agp_fe.current_controller->pid != curr_priv->my_pid) {
ret_val = -EBUSY;
goto ioctl_out;
}
}
switch (cmd) {
case AGPIOC_INFO32:
ret_val = compat_agpioc_info_wrap(curr_priv, (void __user *) arg);
break;
case AGPIOC_ACQUIRE32:
ret_val = agpioc_acquire_wrap(curr_priv);
break;
case AGPIOC_RELEASE32:
ret_val = agpioc_release_wrap(curr_priv);
break;
case AGPIOC_SETUP32:
ret_val = agpioc_setup_wrap(curr_priv, (void __user *) arg);
break;
case AGPIOC_RESERVE32:
ret_val = compat_agpioc_reserve_wrap(curr_priv, (void __user *) arg);
break;
case AGPIOC_PROTECT32:
ret_val = agpioc_protect_wrap(curr_priv);
break;
case AGPIOC_ALLOCATE32:
ret_val = compat_agpioc_allocate_wrap(curr_priv, (void __user *) arg);
break;
case AGPIOC_DEALLOCATE32:
ret_val = agpioc_deallocate_wrap(curr_priv, (int) arg);
break;
case AGPIOC_BIND32:
ret_val = compat_agpioc_bind_wrap(curr_priv, (void __user *) arg);
break;
case AGPIOC_UNBIND32:
ret_val = compat_agpioc_unbind_wrap(curr_priv, (void __user *) arg);
break;
}
ioctl_out:
DBG("ioctl returns %d\n", ret_val);
mutex_unlock(&(agp_fe.agp_mutex));
return ret_val;
}
/*
* Copyright (C) 1999 Jeff Hartmann
* Copyright (C) 1999 Precision Insight, Inc.
* Copyright (C) 1999 Xi Graphics, Inc.
*
* 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 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
* JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS 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.
*
*/
#ifndef _AGP_COMPAT_IOCTL_H
#define _AGP_COMPAT_IOCTL_H
#include <linux/compat.h>
#include <linux/agpgart.h>
#define AGPIOC_INFO32 _IOR (AGPIOC_BASE, 0, compat_uptr_t)
#define AGPIOC_ACQUIRE32 _IO (AGPIOC_BASE, 1)
#define AGPIOC_RELEASE32 _IO (AGPIOC_BASE, 2)
#define AGPIOC_SETUP32 _IOW (AGPIOC_BASE, 3, compat_uptr_t)
#define AGPIOC_RESERVE32 _IOW (AGPIOC_BASE, 4, compat_uptr_t)
#define AGPIOC_PROTECT32 _IOW (AGPIOC_BASE, 5, compat_uptr_t)
#define AGPIOC_ALLOCATE32 _IOWR(AGPIOC_BASE, 6, compat_uptr_t)
#define AGPIOC_DEALLOCATE32 _IOW (AGPIOC_BASE, 7, compat_int_t)
#define AGPIOC_BIND32 _IOW (AGPIOC_BASE, 8, compat_uptr_t)
#define AGPIOC_UNBIND32 _IOW (AGPIOC_BASE, 9, compat_uptr_t)
struct agp_info32 {
struct agp_version version; /* version of the driver */
u32 bridge_id; /* bridge vendor/device */
u32 agp_mode; /* mode info of bridge */
compat_long_t aper_base; /* base of aperture */
compat_size_t aper_size; /* size of aperture */
compat_size_t pg_total; /* max pages (swap + system) */
compat_size_t pg_system; /* max pages (system) */
compat_size_t pg_used; /* current pages used */
};
/*
* The "prot" down below needs still a "sleep" flag somehow ...
*/
struct agp_segment32 {
compat_off_t pg_start; /* starting page to populate */
compat_size_t pg_count; /* number of pages */
compat_int_t prot; /* prot flags for mmap */
};
struct agp_region32 {
compat_pid_t pid; /* pid of process */
compat_size_t seg_count; /* number of segments */
struct agp_segment32 *seg_list;
};
struct agp_allocate32 {
compat_int_t key; /* tag of allocation */
compat_size_t pg_count; /* number of pages */
u32 type; /* 0 == normal, other devspec */
u32 physical; /* device specific (some devices
* need a phys address of the
* actual page behind the gatt
* table) */
};
struct agp_bind32 {
compat_int_t key; /* tag of allocation */
compat_off_t pg_start; /* starting page to populate */
};
struct agp_unbind32 {
compat_int_t key; /* tag of allocation */
u32 priority; /* priority for paging out */
};
extern struct agp_front_data agp_fe;
int agpioc_acquire_wrap(struct agp_file_private *priv);
int agpioc_release_wrap(struct agp_file_private *priv);
int agpioc_protect_wrap(struct agp_file_private *priv);
int agpioc_setup_wrap(struct agp_file_private *priv, void __user *arg);
int agpioc_deallocate_wrap(struct agp_file_private *priv, int arg);
struct agp_file_private *agp_find_private(pid_t pid);
struct agp_client *agp_create_client(pid_t id);
int agp_remove_client(pid_t id);
int agp_create_segment(struct agp_client *client, struct agp_region *region);
void agp_free_memory_wrap(struct agp_memory *memory);
struct agp_memory *agp_allocate_memory_wrap(size_t pg_count, u32 type);
struct agp_memory *agp_find_mem_by_key(int key);
struct agp_client *agp_find_client_by_pid(pid_t id);
#endif /* _AGP_COMPAT_H */
...@@ -41,9 +41,9 @@ ...@@ -41,9 +41,9 @@
#include <asm/pgtable.h> #include <asm/pgtable.h>
#include "agp.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; struct agp_memory *curr;
...@@ -159,7 +159,7 @@ static pgprot_t agp_convert_mmap_flags(int prot) ...@@ -159,7 +159,7 @@ static pgprot_t agp_convert_mmap_flags(int prot)
return vm_get_page_prot(prot_bits); 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 **ret_seg;
struct agp_segment_priv *seg; struct agp_segment_priv *seg;
...@@ -211,7 +211,7 @@ static void agp_insert_into_pool(struct agp_memory * temp) ...@@ -211,7 +211,7 @@ static void agp_insert_into_pool(struct agp_memory * temp)
/* File private list routines */ /* 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; struct agp_file_private *curr;
...@@ -266,13 +266,13 @@ static void agp_remove_file_private(struct agp_file_private * priv) ...@@ -266,13 +266,13 @@ static void agp_remove_file_private(struct agp_file_private * priv)
* Wrappers for agp_free_memory & agp_allocate_memory * Wrappers for agp_free_memory & agp_allocate_memory
* These make sure that internal lists are kept updated. * 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_remove_from_pool(memory);
agp_free_memory(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; struct agp_memory *memory;
...@@ -484,7 +484,7 @@ static struct agp_controller *agp_find_controller_for_client(pid_t id) ...@@ -484,7 +484,7 @@ static struct agp_controller *agp_find_controller_for_client(pid_t id)
return NULL; 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; struct agp_client *temp;
...@@ -509,7 +509,7 @@ static void agp_insert_client(struct agp_client *client) ...@@ -509,7 +509,7 @@ static void agp_insert_client(struct agp_client *client)
agp_fe.current_controller->num_clients++; 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; struct agp_client *new_client;
...@@ -522,7 +522,7 @@ static struct agp_client *agp_create_client(pid_t id) ...@@ -522,7 +522,7 @@ static struct agp_client *agp_create_client(pid_t id)
return new_client; 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 *client;
struct agp_client *prev_client; struct agp_client *prev_client;
...@@ -746,7 +746,7 @@ static int agpioc_info_wrap(struct agp_file_private *priv, void __user *arg) ...@@ -746,7 +746,7 @@ static int agpioc_info_wrap(struct agp_file_private *priv, void __user *arg)
return 0; 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; struct agp_controller *controller;
...@@ -789,14 +789,14 @@ static int agpioc_acquire_wrap(struct agp_file_private *priv) ...@@ -789,14 +789,14 @@ static int agpioc_acquire_wrap(struct agp_file_private *priv)
return 0; return 0;
} }
static int agpioc_release_wrap(struct agp_file_private *priv) int agpioc_release_wrap(struct agp_file_private *priv)
{ {
DBG(""); DBG("");
agp_controller_release_current(agp_fe.current_controller, priv); agp_controller_release_current(agp_fe.current_controller, priv);
return 0; 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; struct agp_setup mode;
...@@ -876,7 +876,7 @@ static int agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg) ...@@ -876,7 +876,7 @@ static int agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
return -EINVAL; return -EINVAL;
} }
static int agpioc_protect_wrap(struct agp_file_private *priv) int agpioc_protect_wrap(struct agp_file_private *priv)
{ {
DBG(""); DBG("");
/* This function is not currently implemented */ /* This function is not currently implemented */
...@@ -907,7 +907,7 @@ static int agpioc_allocate_wrap(struct agp_file_private *priv, void __user *arg) ...@@ -907,7 +907,7 @@ static int agpioc_allocate_wrap(struct agp_file_private *priv, void __user *arg)
return 0; 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; struct agp_memory *memory;
...@@ -1043,6 +1043,9 @@ static const struct file_operations agp_fops = ...@@ -1043,6 +1043,9 @@ static const struct file_operations agp_fops =
.read = agp_read, .read = agp_read,
.write = agp_write, .write = agp_write,
.ioctl = agp_ioctl, .ioctl = agp_ioctl,
#ifdef CONFIG_COMPAT
.compat_ioctl = compat_agp_ioctl,
#endif
.mmap = agp_mmap, .mmap = agp_mmap,
.open = agp_open, .open = agp_open,
.release = agp_release, .release = agp_release,
......
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