forked from luck/tmp_suning_uos_patched
e8edc6e03a
First thing mm.h does is including sched.h solely for can_do_mlock() inline function which has "current" dereference inside. By dealing with can_do_mlock() mm.h can be detached from sched.h which is good. See below, why. This patch a) removes unconditional inclusion of sched.h from mm.h b) makes can_do_mlock() normal function in mm/mlock.c c) exports can_do_mlock() to not break compilation d) adds sched.h inclusions back to files that were getting it indirectly. e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were getting them indirectly Net result is: a) mm.h users would get less code to open, read, preprocess, parse, ... if they don't need sched.h b) sched.h stops being dependency for significant number of files: on x86_64 allmodconfig touching sched.h results in recompile of 4083 files, after patch it's only 3744 (-8.3%). Cross-compile tested on all arm defconfigs, all mips defconfigs, all powerpc defconfigs, alpha alpha-up arm i386 i386-up i386-defconfig i386-allnoconfig ia64 ia64-up m68k mips parisc parisc-up powerpc powerpc-up s390 s390-up sparc sparc-up sparc64 sparc64-up um-x86_64 x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig as well as my two usual configs. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
231 lines
5.8 KiB
C
231 lines
5.8 KiB
C
/* $Id: message.c,v 1.5.8.2 2001/09/23 22:24:59 kai Exp $
|
|
*
|
|
* functions for sending and receiving control messages
|
|
*
|
|
* Copyright (C) 1996 SpellCaster Telecommunications Inc.
|
|
*
|
|
* This software may be used and distributed according to the terms
|
|
* of the GNU General Public License, incorporated herein by reference.
|
|
*
|
|
* For more information, please contact gpl-info@spellcast.com or write:
|
|
*
|
|
* SpellCaster Telecommunications Inc.
|
|
* 5621 Finch Avenue East, Unit #3
|
|
* Scarborough, Ontario Canada
|
|
* M1B 2T9
|
|
* +1 (416) 297-8565
|
|
* +1 (416) 297-6433 Facsimile
|
|
*/
|
|
#include <linux/sched.h>
|
|
#include "includes.h"
|
|
#include "hardware.h"
|
|
#include "message.h"
|
|
#include "card.h"
|
|
|
|
/*
|
|
* receive a message from the board
|
|
*/
|
|
int receivemessage(int card, RspMessage *rspmsg)
|
|
{
|
|
DualPortMemory *dpm;
|
|
unsigned long flags;
|
|
|
|
if (!IS_VALID_CARD(card)) {
|
|
pr_debug("Invalid param: %d is not a valid card id\n", card);
|
|
return -EINVAL;
|
|
}
|
|
|
|
pr_debug("%s: Entered receivemessage\n",
|
|
sc_adapter[card]->devicename);
|
|
|
|
/*
|
|
* See if there are messages waiting
|
|
*/
|
|
if (inb(sc_adapter[card]->ioport[FIFO_STATUS]) & RF_HAS_DATA) {
|
|
/*
|
|
* Map in the DPM to the base page and copy the message
|
|
*/
|
|
spin_lock_irqsave(&sc_adapter[card]->lock, flags);
|
|
outb((sc_adapter[card]->shmem_magic >> 14) | 0x80,
|
|
sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
|
|
dpm = (DualPortMemory *) sc_adapter[card]->rambase;
|
|
memcpy_fromio(rspmsg, &(dpm->rsp_queue[dpm->rsp_tail]),
|
|
MSG_LEN);
|
|
dpm->rsp_tail = (dpm->rsp_tail+1) % MAX_MESSAGES;
|
|
inb(sc_adapter[card]->ioport[FIFO_READ]);
|
|
spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
|
|
/*
|
|
* Tell the board that the message is received
|
|
*/
|
|
pr_debug("%s: Received Message seq:%d pid:%d time:%d cmd:%d "
|
|
"cnt:%d (type,class,code):(%d,%d,%d) "
|
|
"link:%d stat:0x%x\n",
|
|
sc_adapter[card]->devicename,
|
|
rspmsg->sequence_no,
|
|
rspmsg->process_id,
|
|
rspmsg->time_stamp,
|
|
rspmsg->cmd_sequence_no,
|
|
rspmsg->msg_byte_cnt,
|
|
rspmsg->type,
|
|
rspmsg->class,
|
|
rspmsg->code,
|
|
rspmsg->phy_link_no,
|
|
rspmsg->rsp_status);
|
|
|
|
return 0;
|
|
}
|
|
return -ENOMSG;
|
|
}
|
|
|
|
/*
|
|
* send a message to the board
|
|
*/
|
|
int sendmessage(int card,
|
|
unsigned int procid,
|
|
unsigned int type,
|
|
unsigned int class,
|
|
unsigned int code,
|
|
unsigned int link,
|
|
unsigned int data_len,
|
|
unsigned int *data)
|
|
{
|
|
DualPortMemory *dpm;
|
|
ReqMessage sndmsg;
|
|
unsigned long flags;
|
|
|
|
if (!IS_VALID_CARD(card)) {
|
|
pr_debug("Invalid param: %d is not a valid card id\n", card);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* Make sure we only send CEPID messages when the engine is up
|
|
* and CMPID messages when it is down
|
|
*/
|
|
if(sc_adapter[card]->EngineUp && procid == CMPID) {
|
|
pr_debug("%s: Attempt to send CM message with engine up\n",
|
|
sc_adapter[card]->devicename);
|
|
return -ESRCH;
|
|
}
|
|
|
|
if(!sc_adapter[card]->EngineUp && procid == CEPID) {
|
|
pr_debug("%s: Attempt to send CE message with engine down\n",
|
|
sc_adapter[card]->devicename);
|
|
return -ESRCH;
|
|
}
|
|
|
|
memset(&sndmsg, 0, MSG_LEN);
|
|
sndmsg.msg_byte_cnt = 4;
|
|
sndmsg.type = type;
|
|
sndmsg.class = class;
|
|
sndmsg.code = code;
|
|
sndmsg.phy_link_no = link;
|
|
|
|
if (data_len > 0) {
|
|
if (data_len > MSG_DATA_LEN)
|
|
data_len = MSG_DATA_LEN;
|
|
memcpy(&(sndmsg.msg_data), data, data_len);
|
|
sndmsg.msg_byte_cnt = data_len + 8;
|
|
}
|
|
|
|
sndmsg.process_id = procid;
|
|
sndmsg.sequence_no = sc_adapter[card]->seq_no++ % 256;
|
|
|
|
/*
|
|
* wait for an empty slot in the queue
|
|
*/
|
|
while (!(inb(sc_adapter[card]->ioport[FIFO_STATUS]) & WF_NOT_FULL))
|
|
udelay(1);
|
|
|
|
/*
|
|
* Disable interrupts and map in shared memory
|
|
*/
|
|
spin_lock_irqsave(&sc_adapter[card]->lock, flags);
|
|
outb((sc_adapter[card]->shmem_magic >> 14) | 0x80,
|
|
sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
|
|
dpm = (DualPortMemory *) sc_adapter[card]->rambase; /* Fix me */
|
|
memcpy_toio(&(dpm->req_queue[dpm->req_head]),&sndmsg,MSG_LEN);
|
|
dpm->req_head = (dpm->req_head+1) % MAX_MESSAGES;
|
|
outb(sndmsg.sequence_no, sc_adapter[card]->ioport[FIFO_WRITE]);
|
|
spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
|
|
|
|
pr_debug("%s: Sent Message seq:%d pid:%d time:%d "
|
|
"cnt:%d (type,class,code):(%d,%d,%d) "
|
|
"link:%d\n ",
|
|
sc_adapter[card]->devicename,
|
|
sndmsg.sequence_no,
|
|
sndmsg.process_id,
|
|
sndmsg.time_stamp,
|
|
sndmsg.msg_byte_cnt,
|
|
sndmsg.type,
|
|
sndmsg.class,
|
|
sndmsg.code,
|
|
sndmsg.phy_link_no);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int send_and_receive(int card,
|
|
unsigned int procid,
|
|
unsigned char type,
|
|
unsigned char class,
|
|
unsigned char code,
|
|
unsigned char link,
|
|
unsigned char data_len,
|
|
unsigned char *data,
|
|
RspMessage *mesgdata,
|
|
int timeout)
|
|
{
|
|
int retval;
|
|
int tries;
|
|
|
|
if (!IS_VALID_CARD(card)) {
|
|
pr_debug("Invalid param: %d is not a valid card id\n", card);
|
|
return -EINVAL;
|
|
}
|
|
|
|
sc_adapter[card]->want_async_messages = 1;
|
|
retval = sendmessage(card, procid, type, class, code, link,
|
|
data_len, (unsigned int *) data);
|
|
|
|
if (retval) {
|
|
pr_debug("%s: SendMessage failed in SAR\n",
|
|
sc_adapter[card]->devicename);
|
|
sc_adapter[card]->want_async_messages = 0;
|
|
return -EIO;
|
|
}
|
|
|
|
tries = 0;
|
|
/* wait for the response */
|
|
while (tries < timeout) {
|
|
schedule_timeout_interruptible(1);
|
|
|
|
pr_debug("SAR waiting..\n");
|
|
|
|
/*
|
|
* See if we got our message back
|
|
*/
|
|
if ((sc_adapter[card]->async_msg.type == type) &&
|
|
(sc_adapter[card]->async_msg.class == class) &&
|
|
(sc_adapter[card]->async_msg.code == code) &&
|
|
(sc_adapter[card]->async_msg.phy_link_no == link)) {
|
|
|
|
/*
|
|
* Got it!
|
|
*/
|
|
pr_debug("%s: Got ASYNC message\n",
|
|
sc_adapter[card]->devicename);
|
|
memcpy(mesgdata, &(sc_adapter[card]->async_msg),
|
|
sizeof(RspMessage));
|
|
sc_adapter[card]->want_async_messages = 0;
|
|
return 0;
|
|
}
|
|
|
|
tries++;
|
|
}
|
|
|
|
pr_debug("%s: SAR message timeout\n", sc_adapter[card]->devicename);
|
|
sc_adapter[card]->want_async_messages = 0;
|
|
return -ETIME;
|
|
}
|