/*
Unix SMB/CIFS implementation.
Core SMB2 server
Copyright (C) Stefan Metzmacher 2009
Copyright (C) Jeremy Allison 2010
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that 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, see .
*/
#include "includes.h"
#include "smbd/smbd.h"
#include "smbd/globals.h"
#include "../libcli/smb/smb_common.h"
#include "trans2.h"
#include "../lib/util/tevent_ntstatus.h"
static struct tevent_req *smbd_smb2_getinfo_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbd_smb2_request *smb2req,
uint8_t in_info_type,
uint8_t in_file_info_class,
uint32_t in_output_buffer_length,
DATA_BLOB in_input_buffer,
uint32_t in_additional_information,
uint32_t in_flags,
uint64_t in_file_id_volatile);
static NTSTATUS smbd_smb2_getinfo_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
DATA_BLOB *out_output_buffer,
NTSTATUS *p_call_status);
static void smbd_smb2_request_getinfo_done(struct tevent_req *subreq);
NTSTATUS smbd_smb2_request_process_getinfo(struct smbd_smb2_request *req)
{
const uint8_t *inhdr;
const uint8_t *inbody;
int i = req->current_idx;
size_t expected_body_size = 0x29;
size_t body_size;
uint8_t in_info_type;
uint8_t in_file_info_class;
uint32_t in_output_buffer_length;
uint16_t in_input_buffer_offset;
uint32_t in_input_buffer_length;
DATA_BLOB in_input_buffer;
uint32_t in_additional_information;
uint32_t in_flags;
uint64_t in_file_id_persistent;
uint64_t in_file_id_volatile;
struct tevent_req *subreq;
inhdr = (const uint8_t *)req->in.vector[i+0].iov_base;
if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
body_size = SVAL(inbody, 0x00);
if (body_size != expected_body_size) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
in_info_type = CVAL(inbody, 0x02);
in_file_info_class = CVAL(inbody, 0x03);
in_output_buffer_length = IVAL(inbody, 0x04);
in_input_buffer_offset = SVAL(inbody, 0x08);
/* 0x0A 2 bytes reserved */
in_input_buffer_length = IVAL(inbody, 0x0C);
in_additional_information = IVAL(inbody, 0x10);
in_flags = IVAL(inbody, 0x14);
in_file_id_persistent = BVAL(inbody, 0x18);
in_file_id_volatile = BVAL(inbody, 0x20);
if (in_input_buffer_offset == 0 && in_input_buffer_length == 0) {
/* This is ok */
} else if (in_input_buffer_offset !=
(SMB2_HDR_BODY + (body_size & 0xFFFFFFFE))) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
if (in_input_buffer_length > req->in.vector[i+2].iov_len) {
return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
}
in_input_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base;
in_input_buffer.length = in_input_buffer_length;
if (req->compat_chain_fsp) {
/* skip check */
} else if (in_file_id_persistent != in_file_id_volatile) {
return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
}
subreq = smbd_smb2_getinfo_send(req,
req->sconn->smb2.event_ctx,
req,
in_info_type,
in_file_info_class,
in_output_buffer_length,
in_input_buffer,
in_additional_information,
in_flags,
in_file_id_volatile);
if (subreq == NULL) {
return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
}
tevent_req_set_callback(subreq, smbd_smb2_request_getinfo_done, req);
return smbd_smb2_request_pending_queue(req, subreq);
}
static void smbd_smb2_request_getinfo_done(struct tevent_req *subreq)
{
struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
struct smbd_smb2_request);
int i = req->current_idx;
uint8_t *outhdr;
DATA_BLOB outbody;
DATA_BLOB outdyn;
uint16_t out_output_buffer_offset;
DATA_BLOB out_output_buffer = data_blob_null;
NTSTATUS status;
NTSTATUS call_status = NT_STATUS_OK;
NTSTATUS error; /* transport error */
status = smbd_smb2_getinfo_recv(subreq,
req,
&out_output_buffer,
&call_status);
TALLOC_FREE(subreq);
if (!NT_STATUS_IS_OK(status)) {
error = smbd_smb2_request_error(req, status);
if (!NT_STATUS_IS_OK(error)) {
smbd_server_connection_terminate(req->sconn,
nt_errstr(error));
return;
}
return;
}
if (!NT_STATUS_IS_OK(call_status)) {
/* Return a specific error with data. */
error = smbd_smb2_request_error_ex(req,
call_status,
&out_output_buffer,
__location__);
if (!NT_STATUS_IS_OK(error)) {
smbd_server_connection_terminate(req->sconn,
nt_errstr(error));
return;
}
return;
}
out_output_buffer_offset = SMB2_HDR_BODY + 0x08;
outhdr = (uint8_t *)req->out.vector[i].iov_base;
outbody = data_blob_talloc(req->out.vector, NULL, 0x08);
if (outbody.data == NULL) {
error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
if (!NT_STATUS_IS_OK(error)) {
smbd_server_connection_terminate(req->sconn,
nt_errstr(error));
return;
}
return;
}
SSVAL(outbody.data, 0x00, 0x08 + 1); /* struct size */
SSVAL(outbody.data, 0x02,
out_output_buffer_offset); /* output buffer offset */
SIVAL(outbody.data, 0x04,
out_output_buffer.length); /* output buffer length */
outdyn = out_output_buffer;
error = smbd_smb2_request_done(req, outbody, &outdyn);
if (!NT_STATUS_IS_OK(error)) {
smbd_server_connection_terminate(req->sconn,
nt_errstr(error));
return;
}
}
struct smbd_smb2_getinfo_state {
struct smbd_smb2_request *smb2req;
NTSTATUS status;
DATA_BLOB out_output_buffer;
};
static void smb2_ipc_getinfo(struct tevent_req *req,
struct smbd_smb2_getinfo_state *state,
struct tevent_context *ev,
uint8_t in_info_type,
uint8_t in_file_info_class)
{
/* We want to reply to SMB2_GETINFO_FILE
with a class of SMB2_FILE_STANDARD_INFO as
otherwise a Win7 client issues this request
twice (2xroundtrips) if we return NOT_SUPPORTED.
NB. We do the same for SMB1 in call_trans2qpipeinfo() */
if (in_info_type == 0x01 && /* SMB2_GETINFO_FILE */
in_file_info_class == 0x05) { /* SMB2_FILE_STANDARD_INFO */
state->out_output_buffer = data_blob_talloc(state,
NULL, 24);
if (tevent_req_nomem(state->out_output_buffer.data, req)) {
return;
}
memset(state->out_output_buffer.data,0,24);
SOFF_T(state->out_output_buffer.data,0,4096LL);
SIVAL(state->out_output_buffer.data,16,1);
SIVAL(state->out_output_buffer.data,20,1);
tevent_req_done(req);
} else {
tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
}
}
static struct tevent_req *smbd_smb2_getinfo_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct smbd_smb2_request *smb2req,
uint8_t in_info_type,
uint8_t in_file_info_class,
uint32_t in_output_buffer_length,
DATA_BLOB in_input_buffer,
uint32_t in_additional_information,
uint32_t in_flags,
uint64_t in_file_id_volatile)
{
struct tevent_req *req;
struct smbd_smb2_getinfo_state *state;
struct smb_request *smbreq;
connection_struct *conn = smb2req->tcon->compat_conn;
files_struct *fsp;
NTSTATUS status;
req = tevent_req_create(mem_ctx, &state,
struct smbd_smb2_getinfo_state);
if (req == NULL) {
return NULL;
}
state->smb2req = smb2req;
state->status = NT_STATUS_OK;
state->out_output_buffer = data_blob_null;
DEBUG(10,("smbd_smb2_getinfo_send: file_id[0x%016llX]\n",
(unsigned long long)in_file_id_volatile));
smbreq = smbd_smb2_fake_smb_request(smb2req);
if (tevent_req_nomem(smbreq, req)) {
return tevent_req_post(req, ev);
}
fsp = file_fsp(smbreq, (uint16_t)in_file_id_volatile);
if (fsp == NULL) {
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return tevent_req_post(req, ev);
}
if (conn != fsp->conn) {
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return tevent_req_post(req, ev);
}
if (smb2req->session->vuid != fsp->vuid) {
tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
return tevent_req_post(req, ev);
}
if (IS_IPC(conn)) {
smb2_ipc_getinfo(req, state, ev,
in_info_type, in_file_info_class);
return tevent_req_post(req, ev);
}
switch (in_info_type) {
case 0x01:/* SMB2_GETINFO_FILE */
{
uint16_t file_info_level;
char *data = NULL;
unsigned int data_size = 0;
bool delete_pending = false;
struct timespec write_time_ts;
struct file_id fileid;
struct ea_list *ea_list = NULL;
int lock_data_count = 0;
char *lock_data = NULL;
ZERO_STRUCT(write_time_ts);
switch (in_file_info_class) {
case 0x0F:/* RAW_FILEINFO_SMB2_ALL_EAS */
file_info_level = 0xFF00 | in_file_info_class;
break;
case 0x12:/* RAW_FILEINFO_SMB2_ALL_INFORMATION */
file_info_level = 0xFF00 | in_file_info_class;
break;
default:
/* the levels directly map to the passthru levels */
file_info_level = in_file_info_class + 1000;
break;
}
if (fsp->fake_file_handle) {
/*
* This is actually for the QUOTA_FAKE_FILE --metze
*/
/* We know this name is ok, it's already passed the checks. */
} else if (fsp && fsp->fh->fd == -1) {
/*
* This is actually a QFILEINFO on a directory
* handle (returned from an NT SMB). NT5.0 seems
* to do this call. JRA.
*/
if (INFO_LEVEL_IS_UNIX(file_info_level)) {
/* Always do lstat for UNIX calls. */
if (SMB_VFS_LSTAT(conn, fsp->fsp_name)) {
DEBUG(3,("smbd_smb2_getinfo_send: "
"SMB_VFS_LSTAT of %s failed "
"(%s)\n", fsp_str_dbg(fsp),
strerror(errno)));
status = map_nt_error_from_unix(errno);
tevent_req_nterror(req, status);
return tevent_req_post(req, ev);
}
} else if (SMB_VFS_STAT(conn, fsp->fsp_name)) {
DEBUG(3,("smbd_smb2_getinfo_send: "
"SMB_VFS_STAT of %s failed (%s)\n",
fsp_str_dbg(fsp),
strerror(errno)));
status = map_nt_error_from_unix(errno);
tevent_req_nterror(req, status);
return tevent_req_post(req, ev);
}
fileid = vfs_file_id_from_sbuf(conn,
&fsp->fsp_name->st);
get_file_infos(fileid, fsp->name_hash,
&delete_pending, &write_time_ts);
} else {
/*
* Original code - this is an open file.
*/
if (SMB_VFS_FSTAT(fsp, &fsp->fsp_name->st) != 0) {
DEBUG(3, ("smbd_smb2_getinfo_send: "
"fstat of fnum %d failed (%s)\n",
fsp->fnum, strerror(errno)));
status = map_nt_error_from_unix(errno);
tevent_req_nterror(req, status);
return tevent_req_post(req, ev);
}
fileid = vfs_file_id_from_sbuf(conn,
&fsp->fsp_name->st);
get_file_infos(fileid, fsp->name_hash,
&delete_pending, &write_time_ts);
}
status = smbd_do_qfilepathinfo(conn, state,
file_info_level,
fsp,
fsp->fsp_name,
delete_pending,
write_time_ts,
ea_list,
lock_data_count,
lock_data,
STR_UNICODE,
in_output_buffer_length,
&data,
&data_size);
if (!NT_STATUS_IS_OK(status)) {
SAFE_FREE(data);
if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
status = NT_STATUS_INVALID_INFO_CLASS;
}
tevent_req_nterror(req, status);
return tevent_req_post(req, ev);
}
if (data_size > 0) {
state->out_output_buffer = data_blob_talloc(state,
data,
data_size);
SAFE_FREE(data);
if (tevent_req_nomem(state->out_output_buffer.data, req)) {
return tevent_req_post(req, ev);
}
}
SAFE_FREE(data);
break;
}
case 0x02:/* SMB2_GETINFO_FS */
{
uint16_t file_info_level;
char *data = NULL;
int data_size = 0;
/* the levels directly map to the passthru levels */
file_info_level = in_file_info_class + 1000;
status = smbd_do_qfsinfo(conn, state,
file_info_level,
STR_UNICODE,
in_output_buffer_length,
&data,
&data_size);
if (!NT_STATUS_IS_OK(status)) {
SAFE_FREE(data);
if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_LEVEL)) {
status = NT_STATUS_INVALID_INFO_CLASS;
}
tevent_req_nterror(req, status);
return tevent_req_post(req, ev);
}
if (data_size > 0) {
state->out_output_buffer = data_blob_talloc(state,
data,
data_size);
SAFE_FREE(data);
if (tevent_req_nomem(state->out_output_buffer.data, req)) {
return tevent_req_post(req, ev);
}
}
SAFE_FREE(data);
break;
}
case 0x03:/* SMB2_GETINFO_SEC */
{
uint8_t *p_marshalled_sd = NULL;
size_t sd_size = 0;
status = smbd_do_query_security_desc(conn,
state,
fsp,
/* Security info wanted. */
in_additional_information,
in_output_buffer_length,
&p_marshalled_sd,
&sd_size);
if (NT_STATUS_EQUAL(status, NT_STATUS_BUFFER_TOO_SMALL)) {
/* Return needed size. */
state->out_output_buffer = data_blob_talloc(state,
NULL,
4);
if (tevent_req_nomem(state->out_output_buffer.data, req)) {
return tevent_req_post(req, ev);
}
SIVAL(state->out_output_buffer.data,0,(uint32_t)sd_size);
state->status = NT_STATUS_BUFFER_TOO_SMALL;
break;
}
if (!NT_STATUS_IS_OK(status)) {
DEBUG(10,("smbd_smb2_getinfo_send: "
"smbd_do_query_security_desc of %s failed "
"(%s)\n", fsp_str_dbg(fsp),
nt_errstr(status)));
tevent_req_nterror(req, status);
return tevent_req_post(req, ev);
}
if (sd_size > 0) {
state->out_output_buffer = data_blob_talloc(state,
p_marshalled_sd,
sd_size);
if (tevent_req_nomem(state->out_output_buffer.data, req)) {
return tevent_req_post(req, ev);
}
}
break;
}
default:
DEBUG(10,("smbd_smb2_getinfo_send: "
"unknown in_info_type of %u "
" for file %s\n",
(unsigned int)in_info_type,
fsp_str_dbg(fsp) ));
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return tevent_req_post(req, ev);
}
tevent_req_done(req);
return tevent_req_post(req, ev);
}
static NTSTATUS smbd_smb2_getinfo_recv(struct tevent_req *req,
TALLOC_CTX *mem_ctx,
DATA_BLOB *out_output_buffer,
NTSTATUS *pstatus)
{
NTSTATUS status;
struct smbd_smb2_getinfo_state *state = tevent_req_data(req,
struct smbd_smb2_getinfo_state);
if (tevent_req_is_nterror(req, &status)) {
tevent_req_received(req);
return status;
}
*out_output_buffer = state->out_output_buffer;
talloc_steal(mem_ctx, out_output_buffer->data);
*pstatus = state->status;
tevent_req_received(req);
return NT_STATUS_OK;
}
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/*
* pci_root.c - ACPI PCI Root Bridge Driver ($Revision: 40 $)
*
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that 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.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/proc_fs.h>
#include <linux/spinlock.h>
#include <linux/pm.h>
#include <linux/pci.h>
#include <linux/pci-acpi.h>
#include <linux/acpi.h>
#include <acpi/acpi_bus.h>
#include <acpi/acpi_drivers.h>
#define PREFIX "ACPI: "
#define _COMPONENT ACPI_PCI_COMPONENT
ACPI_MODULE_NAME("pci_root");
#define ACPI_PCI_ROOT_CLASS "pci_bridge"
#define ACPI_PCI_ROOT_DEVICE_NAME "PCI Root Bridge"
static int acpi_pci_root_add(struct acpi_device *device);
static int acpi_pci_root_remove(struct acpi_device *device, int type);
static int acpi_pci_root_start(struct acpi_device *device);
static struct acpi_device_id root_device_ids[] = {
{"PNP0A03", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, root_device_ids);
static struct acpi_driver acpi_pci_root_driver = {
.name = "pci_root",
.class = ACPI_PCI_ROOT_CLASS,
.ids = root_device_ids,
.ops = {
.add = acpi_pci_root_add,
.remove = acpi_pci_root_remove,
.start = acpi_pci_root_start,
},
};
static LIST_HEAD(acpi_pci_roots);
static struct acpi_pci_driver *sub_driver;
static DEFINE_MUTEX(osc_lock);
int acpi_pci_register_driver(struct acpi_pci_driver *driver)
{
int n = 0;
struct acpi_pci_root *root;
struct acpi_pci_driver **pptr = &sub_driver;
while (*pptr)
pptr = &(*pptr)->next;
*pptr = driver;
if (!driver->add)
return 0;
list_for_each_entry(root, &acpi_pci_roots, node) {
driver->add(root->device->handle);
n++;
}
return n;
}
EXPORT_SYMBOL(acpi_pci_register_driver);
void acpi_pci_unregister_driver(struct acpi_pci_driver *driver)
{
struct acpi_pci_root *root;
struct acpi_pci_driver **pptr = &sub_driver;
while (*pptr) {
if (*pptr == driver)
break;
pptr = &(*pptr)->next;
}
BUG_ON(!*pptr);
*pptr = (*pptr)->next;
if (!driver->remove)
return;
list_for_each_entry(root, &acpi_pci_roots, node)
driver->remove(root->device->handle);
}
EXPORT_SYMBOL(acpi_pci_unregister_driver);
acpi_handle acpi_get_pci_rootbridge_handle(unsigned int seg, unsigned int bus)
{
struct acpi_pci_root *root;
list_for_each_entry(root, &acpi_pci_roots, node)
if ((root->segment == (u16) seg) && (root->bus_nr == (u16) bus))
return root->device->handle;
return NULL;
}
EXPORT_SYMBOL_GPL(acpi_get_pci_rootbridge_handle);
/**
* acpi_is_root_bridge - determine whether an ACPI CA node is a PCI root bridge
* @handle - the ACPI CA node in question.
*
* Note: we could make this API take a struct acpi_device * instead, but
* for now, it's more convenient to operate on an acpi_handle.
*/
int acpi_is_root_bridge(acpi_handle handle)
{
int ret;
struct acpi_device *device;
ret = acpi_bus_get_device(handle, &device);
if (ret)
return 0;
ret = acpi_match_device_ids(device, root_device_ids);
if (ret)
return 0;
else
return 1;
}
EXPORT_SYMBOL_GPL(acpi_is_root_bridge);
static acpi_status
get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data)
{
int *busnr = data;
struct acpi_resource_address64 address;
if (resource->type != ACPI_RESOURCE_TYPE_ADDRESS16 &&
resource->type != ACPI_RESOURCE_TYPE_ADDRESS32 &&
resource->type != ACPI_RESOURCE_TYPE_ADDRESS64)
return AE_OK;
acpi_resource_to_address64(resource, &address);
if ((address.address_length > 0) &&
(address.resource_type == ACPI_BUS_NUMBER_RANGE))
*busnr = address.minimum;
return AE_OK;
}
static acpi_status try_get_root_bridge_busnr(acpi_handle handle,
unsigned long long *bus)
{
acpi_status status;
int busnum;
busnum = -1;
status =
acpi_walk_resources(handle, METHOD_NAME__CRS,
get_root_bridge_busnr_callback, &busnum);
if (ACPI_FAILURE(status))
return status;
/* Check if we really get a bus number from _CRS */
if (busnum == -1)
return AE_ERROR;
*bus = busnum;
return AE_OK;
}
static void acpi_pci_bridge_scan(struct acpi_device *device)
{
int status;
struct acpi_device *child = NULL;
if (device->flags.bus_address)
if (device->parent && device->parent->ops.bind) {
status = device->parent->ops.bind(device);
if (!status) {
list_for_each_entry(child, &device->children, node)
acpi_pci_bridge_scan(child);
}
}
}
static u8 pci_osc_uuid_str[] = "33DB4D5B-1FF7-401C-9657-7441C03DD766";
static acpi_status acpi_pci_run_osc(acpi_handle handle,
const u32 *capbuf, u32 *retval)
{
struct acpi_osc_context context = {
.uuid_str = pci_osc_uuid_str,
.rev = 1,
.cap.length = 12,
.cap.pointer = (void *)capbuf,
};
acpi_status status;
status = acpi_run_osc(handle, &context);
if (ACPI_SUCCESS(status)) {
*retval = *((u32 *)(context.ret.pointer + 8));
kfree(context.ret.pointer);
}
return status;
}
static acpi_status acpi_pci_query_osc(struct acpi_pci_root *root, u32 flags)
{
acpi_status status;
u32 support_set, result, capbuf[3];
/* do _OSC query for all possible controls */
support_set = root->osc_support_set | (flags & OSC_PCI_SUPPORT_MASKS);
capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
capbuf[OSC_SUPPORT_TYPE] = support_set;
capbuf[OSC_CONTROL_TYPE] = OSC_PCI_CONTROL_MASKS;
status = acpi_pci_run_osc(root->device->handle, capbuf, &result);
if (ACPI_SUCCESS(status)) {
root->osc_support_set = support_set;
root->osc_control_qry = result;
root->osc_queried = 1;
}
return status;
}
static acpi_status acpi_pci_osc_support(struct acpi_pci_root *root, u32 flags)
{
acpi_status status;
acpi_handle tmp;
status = acpi_get_handle(root->device->handle, "_OSC", &tmp);
if (ACPI_FAILURE(status))
return status;
mutex_lock(&osc_lock);
status = acpi_pci_query_osc(root, flags);
mutex_unlock(&osc_lock);
return status;
}
struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle)
{
struct acpi_pci_root *root;
list_for_each_entry(root, &acpi_pci_roots, node) {
if (root->device->handle == handle)
return root;
}
return NULL;
}
EXPORT_SYMBOL_GPL(acpi_pci_find_root);
struct acpi_handle_node {
struct list_head node;
acpi_handle handle;
};
/**
* acpi_get_pci_dev - convert ACPI CA handle to struct pci_dev
* @handle: the handle in question
*
* Given an ACPI CA handle, the desired PCI device is located in the
* list of PCI devices.
*
* If the device is found, its reference count is increased and this
* function returns a pointer to its data structure. The caller must
* decrement the reference count by calling pci_dev_put().
* If no device is found, %NULL is returned.
*/
struct pci_dev *acpi_get_pci_dev(acpi_handle handle)
{
int dev, fn;
unsigned long long adr;
acpi_status status;
acpi_handle phandle;
struct pci_bus *pbus;
struct pci_dev *pdev = NULL;
struct acpi_handle_node *node, *tmp;
struct acpi_pci_root *root;
LIST_HEAD(device_list);
/*
* Walk up the ACPI CA namespace until we reach a PCI root bridge.
*/
phandle = handle;
while (!acpi_is_root_bridge(phandle)) {
node = kzalloc(sizeof(struct acpi_handle_node), GFP_KERNEL);
if (!node)
goto out;
INIT_LIST_HEAD(&node->node);
node->handle = phandle;
list_add(&node->node, &device_list);
status = acpi_get_parent(phandle, &phandle);
if (ACPI_FAILURE(status))
goto out;
}
root = acpi_pci_find_root(phandle);
if (!root)
goto out;
pbus = root->bus;
/*
* Now, walk back down the PCI device tree until we return to our
* original handle. Assumes that everything between the PCI root
* bridge and the device we're looking for must be a P2P bridge.
*/
list_for_each_entry(node, &device_list, node) {
acpi_handle hnd = node->handle;
status = acpi_evaluate_integer(hnd, "_ADR", NULL, &adr);
if (ACPI_FAILURE(status))
goto out;
dev = (adr >> 16) & 0xffff;
fn = adr & 0xffff;
pdev = pci_get_slot(pbus, PCI_DEVFN(dev, fn));
if (!pdev || hnd == handle)
break;
pbus = pdev->subordinate;
pci_dev_put(pdev);
/*
* This function may be called for a non-PCI device that has a
* PCI parent (eg. a disk under a PCI SATA controller). In that
* case pdev->subordinate will be NULL for the parent.
*/
if (!pbus) {
dev_dbg(&pdev->dev, "Not a PCI-to-PCI bridge\n");
pdev = NULL;
break;
}
}
out:
list_for_each_entry_safe(node, tmp, &device_list, node)
kfree(node);
return pdev;
}
EXPORT_SYMBOL_GPL(acpi_get_pci_dev);
/**
* acpi_pci_osc_control_set - commit requested control to Firmware
* @handle: acpi_handle for the target ACPI object
* @flags: driver's requested control bits
*
* Attempt to take control from Firmware on requested control bits.
**/
acpi_status acpi_pci_osc_control_set(acpi_handle handle, u32 flags)
{
acpi_status status;
u32 control_req, result, capbuf[3];
acpi_handle tmp;
struct acpi_pci_root *root;
status = acpi_get_handle(handle, "_OSC", &tmp);
if (ACPI_FAILURE(status))
return status;
control_req = (flags & OSC_PCI_CONTROL_MASKS);
if (!control_req)
return AE_TYPE;
root = acpi_pci_find_root(handle);
if (!root)
return AE_NOT_EXIST;
mutex_lock(&osc_lock);
/* No need to evaluate _OSC if the control was already granted. */
if ((root->osc_control_set & control_req) == control_req)
goto out;
/* Need to query controls first before requesting them */
if (!root->osc_queried) {
status = acpi_pci_query_osc(root, root->osc_support_set);
if (ACPI_FAILURE(status))
goto out;
}
if ((root->osc_control_qry & control_req) != control_req) {
printk(KERN_DEBUG
"Firmware did not grant requested _OSC control\n");
status = AE_SUPPORT;
goto out;
}
capbuf[OSC_QUERY_TYPE] = 0;
capbuf[OSC_SUPPORT_TYPE] = root->osc_support_set;
capbuf[OSC_CONTROL_TYPE] = root->osc_control_set | control_req;
status = acpi_pci_run_osc(handle, capbuf, &result);
if (ACPI_SUCCESS(status))
root->osc_control_set = result;
out:
mutex_unlock(&osc_lock);
return status;
}
EXPORT_SYMBOL(acpi_pci_osc_control_set);
static int __devinit acpi_pci_root_add(struct acpi_device *device)
{
unsigned long long segment, bus;
acpi_status status;
int result;
struct acpi_pci_root *root;
acpi_handle handle;
struct acpi_device *child;
u32 flags, base_flags;
segment = 0;
status = acpi_evaluate_integer(device->handle, METHOD_NAME__SEG, NULL,
&segment);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
printk(KERN_ERR PREFIX "can't evaluate _SEG\n");
return -ENODEV;
}
/* Check _CRS first, then _BBN. If no _BBN, default to zero. */
bus = 0;
status = try_get_root_bridge_busnr(device->handle, &bus);
if (ACPI_FAILURE(status)) {
status = acpi_evaluate_integer(device->handle, METHOD_NAME__BBN, NULL, &bus);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
printk(KERN_ERR PREFIX
"no bus number in _CRS and can't evaluate _BBN\n");
return -ENODEV;
}
}
root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
if (!root)
return -ENOMEM;
INIT_LIST_HEAD(&root->node);
root->device = device;
root->segment = segment & 0xFFFF;
root->bus_nr = bus & 0xFF;
strcpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
device->driver_data = root;
/*
* All supported architectures that use ACPI have support for
* PCI domains, so we indicate this in _OSC support capabilities.
*/
flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT;
acpi_pci_osc_support(root, flags);
/*
* TBD: Need PCI interface for enumeration/configuration of roots.
*/
/* TBD: Locking */
list_add_tail(&root->node, &acpi_pci_roots);
printk(KERN_INFO PREFIX "%s [%s] (%04x:%02x)\n",
acpi_device_name(device), acpi_device_bid(device),
root->segment, root->bus_nr);
/*
* Scan the Root Bridge
* --------------------
* Must do this prior to any attempt to bind the root device, as the
* PCI namespace does not get created until this call is made (and
* thus the root bridge's pci_dev does not exist).
*/
root->bus = pci_acpi_scan_root(device, segment, bus);
if (!root->bus) {
printk(KERN_ERR PREFIX
"Bus %04x:%02x not present in PCI namespace\n",
root->segment, root->bus_nr);
result = -ENODEV;
goto end;
}
/*
* Attach ACPI-PCI Context
* -----------------------
* Thus binding the ACPI and PCI devices.
*/
result = acpi_pci_bind_root(device);
if (result)
goto end;
/*
* PCI Routing Table
* -----------------
* Evaluate and parse _PRT, if exists.
*/
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