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linux/drivers/char/rio/riotable.c
Jiri Slaby 212e7bb6cd Char: rio, fix sparse warnings 
Add some locks and unlocks to some code paths.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-02 15:28:19 -07:00

946 lines
30 KiB
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/*
** -----------------------------------------------------------------------------
**
** Perle Specialix driver for Linux
** Ported from existing RIO Driver for SCO sources.
*
* (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
**
** Module : riotable.c
** SID : 1.2
** Last Modified : 11/6/98 10:33:47
** Retrieved : 11/6/98 10:33:50
**
** ident @(#)riotable.c 1.2
**
** -----------------------------------------------------------------------------
*/
#ifdef SCCS_LABELS
static char *_riotable_c_sccs_ = "@(#)riotable.c 1.2";
#endif
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/string.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/string.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>
#include <linux/termios.h>
#include <linux/serial.h>
#include <linux/generic_serial.h>
#include "linux_compat.h"
#include "rio_linux.h"
#include "pkt.h"
#include "daemon.h"
#include "rio.h"
#include "riospace.h"
#include "cmdpkt.h"
#include "map.h"
#include "rup.h"
#include "port.h"
#include "riodrvr.h"
#include "rioinfo.h"
#include "func.h"
#include "errors.h"
#include "pci.h"
#include "parmmap.h"
#include "unixrup.h"
#include "board.h"
#include "host.h"
#include "phb.h"
#include "link.h"
#include "cmdblk.h"
#include "route.h"
#include "cirrus.h"
#include "rioioctl.h"
#include "param.h"
#include "protsts.h"
/*
** A configuration table has been loaded. It is now up to us
** to sort it out and use the information contained therein.
*/
int RIONewTable(struct rio_info *p)
{
int Host, Host1, Host2, NameIsUnique, Entry, SubEnt;
struct Map *MapP;
struct Map *HostMapP;
struct Host *HostP;
char *cptr;
/*
** We have been sent a new table to install. We need to break
** it down into little bits and spread it around a bit to see
** what we have got.
*/
/*
** Things to check:
** (things marked 'xx' aren't checked any more!)
** (1) That there are no booted Hosts/RTAs out there.
** (2) That the names are properly formed
** (3) That blank entries really are.
** xx (4) That hosts mentioned in the table actually exist. xx
** (5) That the IDs are unique (per host).
** (6) That host IDs are zero
** (7) That port numbers are valid
** (8) That port numbers aren't duplicated
** (9) That names aren't duplicated
** xx (10) That hosts that actually exist are mentioned in the table. xx
*/
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(1)\n");
if (p->RIOSystemUp) { /* (1) */
p->RIOError.Error = HOST_HAS_ALREADY_BEEN_BOOTED;
return -EBUSY;
}
p->RIOError.Error = NOTHING_WRONG_AT_ALL;
p->RIOError.Entry = -1;
p->RIOError.Other = -1;
for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
MapP = &p->RIOConnectTable[Entry];
if ((MapP->Flags & RTA16_SECOND_SLOT) == 0) {
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(2)\n");
cptr = MapP->Name; /* (2) */
cptr[MAX_NAME_LEN - 1] = '\0';
if (cptr[0] == '\0') {
memcpy(MapP->Name, MapP->RtaUniqueNum ? "RTA NN" : "HOST NN", 8);
MapP->Name[5] = '0' + Entry / 10;
MapP->Name[6] = '0' + Entry % 10;
}
while (*cptr) {
if (*cptr < ' ' || *cptr > '~') {
p->RIOError.Error = BAD_CHARACTER_IN_NAME;
p->RIOError.Entry = Entry;
return -ENXIO;
}
cptr++;
}
}
/*
** If the entry saved was a tentative entry then just forget
** about it.
*/
if (MapP->Flags & SLOT_TENTATIVE) {
MapP->HostUniqueNum = 0;
MapP->RtaUniqueNum = 0;
continue;
}
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(3)\n");
if (!MapP->RtaUniqueNum && !MapP->HostUniqueNum) { /* (3) */
if (MapP->ID || MapP->SysPort || MapP->Flags) {
rio_dprintk(RIO_DEBUG_TABLE, "%s pretending to be empty but isn't\n", MapP->Name);
p->RIOError.Error = TABLE_ENTRY_ISNT_PROPERLY_NULL;
p->RIOError.Entry = Entry;
return -ENXIO;
}
rio_dprintk(RIO_DEBUG_TABLE, "!RIO: Daemon: test (3) passes\n");
continue;
}
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(4)\n");
for (Host = 0; Host < p->RIONumHosts; Host++) { /* (4) */
if (p->RIOHosts[Host].UniqueNum == MapP->HostUniqueNum) {
HostP = &p->RIOHosts[Host];
/*
** having done the lookup, we don't really want to do
** it again, so hang the host number in a safe place
*/
MapP->Topology[0].Unit = Host;
break;
}
}
if (Host >= p->RIONumHosts) {
rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has unknown host unique number 0x%x\n", MapP->Name, MapP->HostUniqueNum);
MapP->HostUniqueNum = 0;
/* MapP->RtaUniqueNum = 0; */
/* MapP->ID = 0; */
/* MapP->Flags = 0; */
/* MapP->SysPort = 0; */
/* MapP->Name[0] = 0; */
continue;
}
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(5)\n");
if (MapP->RtaUniqueNum) { /* (5) */
if (!MapP->ID) {
rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an ID of zero!\n", MapP->Name);
p->RIOError.Error = ZERO_RTA_ID;
p->RIOError.Entry = Entry;
return -ENXIO;
}
if (MapP->ID > MAX_RUP) {
rio_dprintk(RIO_DEBUG_TABLE, "RIO: RTA %s has been allocated an invalid ID %d\n", MapP->Name, MapP->ID);
p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
p->RIOError.Entry = Entry;
return -ENXIO;
}
for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
if (MapP->HostUniqueNum == p->RIOConnectTable[SubEnt].HostUniqueNum && MapP->ID == p->RIOConnectTable[SubEnt].ID) {
rio_dprintk(RIO_DEBUG_TABLE, "Dupl. ID number allocated to RTA %s and RTA %s\n", MapP->Name, p->RIOConnectTable[SubEnt].Name);
p->RIOError.Error = DUPLICATED_RTA_ID;
p->RIOError.Entry = Entry;
p->RIOError.Other = SubEnt;
return -ENXIO;
}
/*
** If the RtaUniqueNum is the same, it may be looking at both
** entries for a 16 port RTA, so check the ids
*/
if ((MapP->RtaUniqueNum == p->RIOConnectTable[SubEnt].RtaUniqueNum)
&& (MapP->ID2 != p->RIOConnectTable[SubEnt].ID)) {
rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", MapP->Name);
rio_dprintk(RIO_DEBUG_TABLE, "RTA %s has duplicate unique number\n", p->RIOConnectTable[SubEnt].Name);
p->RIOError.Error = DUPLICATE_UNIQUE_NUMBER;
p->RIOError.Entry = Entry;
p->RIOError.Other = SubEnt;
return -ENXIO;
}
}
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7a)\n");
/* (7a) */
if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d-RTA %s is not a multiple of %d!\n", (int) MapP->SysPort, MapP->Name, PORTS_PER_RTA);
p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
p->RIOError.Entry = Entry;
return -ENXIO;
}
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(7b)\n");
/* (7b) */
if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
rio_dprintk(RIO_DEBUG_TABLE, "TTY Port number %d for RTA %s is too big\n", (int) MapP->SysPort, MapP->Name);
p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
p->RIOError.Entry = Entry;
return -ENXIO;
}
for (SubEnt = 0; SubEnt < Entry; SubEnt++) {
if (p->RIOConnectTable[SubEnt].Flags & RTA16_SECOND_SLOT)
continue;
if (p->RIOConnectTable[SubEnt].RtaUniqueNum) {
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(8)\n");
/* (8) */
if ((MapP->SysPort != NO_PORT) && (MapP->SysPort == p->RIOConnectTable[SubEnt].SysPort)) {
rio_dprintk(RIO_DEBUG_TABLE, "RTA %s:same TTY port # as RTA %s (%d)\n", MapP->Name, p->RIOConnectTable[SubEnt].Name, (int) MapP->SysPort);
p->RIOError.Error = TTY_NUMBER_IN_USE;
p->RIOError.Entry = Entry;
p->RIOError.Other = SubEnt;
return -ENXIO;
}
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(9)\n");
if (strcmp(MapP->Name, p->RIOConnectTable[SubEnt].Name) == 0 && !(MapP->Flags & RTA16_SECOND_SLOT)) { /* (9) */
rio_dprintk(RIO_DEBUG_TABLE, "RTA name %s used twice\n", MapP->Name);
p->RIOError.Error = NAME_USED_TWICE;
p->RIOError.Entry = Entry;
p->RIOError.Other = SubEnt;
return -ENXIO;
}
}
}
} else { /* (6) */
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: entering(6)\n");
if (MapP->ID) {
rio_dprintk(RIO_DEBUG_TABLE, "RIO:HOST %s has been allocated ID that isn't zero!\n", MapP->Name);
p->RIOError.Error = HOST_ID_NOT_ZERO;
p->RIOError.Entry = Entry;
return -ENXIO;
}
if (MapP->SysPort != NO_PORT) {
rio_dprintk(RIO_DEBUG_TABLE, "RIO: HOST %s has been allocated port numbers!\n", MapP->Name);
p->RIOError.Error = HOST_SYSPORT_BAD;
p->RIOError.Entry = Entry;
return -ENXIO;
}
}
}
/*
** wow! if we get here then it's a goody!
*/
/*
** Zero the (old) entries for each host...
*/
for (Host = 0; Host < RIO_HOSTS; Host++) {
for (Entry = 0; Entry < MAX_RUP; Entry++) {
memset(&p->RIOHosts[Host].Mapping[Entry], 0, sizeof(struct Map));
}
memset(&p->RIOHosts[Host].Name[0], 0, sizeof(p->RIOHosts[Host].Name));
}
/*
** Copy in the new table entries
*/
for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
rio_dprintk(RIO_DEBUG_TABLE, "RIONewTable: Copy table for Host entry %d\n", Entry);
MapP = &p->RIOConnectTable[Entry];
/*
** Now, if it is an empty slot ignore it!
*/
if (MapP->HostUniqueNum == 0)
continue;
/*
** we saved the host number earlier, so grab it back
*/
HostP = &p->RIOHosts[MapP->Topology[0].Unit];
/*
** If it is a host, then we only need to fill in the name field.
*/
if (MapP->ID == 0) {
rio_dprintk(RIO_DEBUG_TABLE, "Host entry found. Name %s\n", MapP->Name);
memcpy(HostP->Name, MapP->Name, MAX_NAME_LEN);
continue;
}
/*
** Its an RTA entry, so fill in the host mapping entries for it
** and the port mapping entries. Notice that entry zero is for
** ID one.
*/
HostMapP = &HostP->Mapping[MapP->ID - 1];
if (MapP->Flags & SLOT_IN_USE) {
rio_dprintk(RIO_DEBUG_TABLE, "Rta entry found. Name %s\n", MapP->Name);
/*
** structure assign, then sort out the bits we shouldn't have done
*/
*HostMapP = *MapP;
HostMapP->Flags = SLOT_IN_USE;
if (MapP->Flags & RTA16_SECOND_SLOT)
HostMapP->Flags |= RTA16_SECOND_SLOT;
RIOReMapPorts(p, HostP, HostMapP);
} else {
rio_dprintk(RIO_DEBUG_TABLE, "TENTATIVE Rta entry found. Name %s\n", MapP->Name);
}
}
for (Entry = 0; Entry < TOTAL_MAP_ENTRIES; Entry++) {
p->RIOSavedTable[Entry] = p->RIOConnectTable[Entry];
}
for (Host = 0; Host < p->RIONumHosts; Host++) {
for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
p->RIOHosts[Host].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
p->RIOHosts[Host].Topology[SubEnt].Link = NO_LINK;
}
for (Entry = 0; Entry < MAX_RUP; Entry++) {
for (SubEnt = 0; SubEnt < LINKS_PER_UNIT; SubEnt++) {
p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Unit = ROUTE_DISCONNECT;
p->RIOHosts[Host].Mapping[Entry].Topology[SubEnt].Link = NO_LINK;
}
}
if (!p->RIOHosts[Host].Name[0]) {
memcpy(p->RIOHosts[Host].Name, "HOST 1", 7);
p->RIOHosts[Host].Name[5] += Host;
}
/*
** Check that default name assigned is unique.
*/
Host1 = Host;
NameIsUnique = 0;
while (!NameIsUnique) {
NameIsUnique = 1;
for (Host2 = 0; Host2 < p->RIONumHosts; Host2++) {
if (Host2 == Host)
continue;
if (strcmp(p->RIOHosts[Host].Name, p->RIOHosts[Host2].Name)
== 0) {
NameIsUnique = 0;
Host1++;
if (Host1 >= p->RIONumHosts)
Host1 = 0;
p->RIOHosts[Host].Name[5] = '1' + Host1;
}
}
}
/*
** Rename host if name already used.
*/
if (Host1 != Host) {
rio_dprintk(RIO_DEBUG_TABLE, "Default name %s already used\n", p->RIOHosts[Host].Name);
memcpy(p->RIOHosts[Host].Name, "HOST 1", 7);
p->RIOHosts[Host].Name[5] += Host1;
}
rio_dprintk(RIO_DEBUG_TABLE, "Assigning default name %s\n", p->RIOHosts[Host].Name);
}
return 0;
}
/*
** User process needs the config table - build it from first
** principles.
**
* FIXME: SMP locking
*/
int RIOApel(struct rio_info *p)
{
int Host;
int link;
int Rup;
int Next = 0;
struct Map *MapP;
struct Host *HostP;
unsigned long flags;
rio_dprintk(RIO_DEBUG_TABLE, "Generating a table to return to config.rio\n");
memset(&p->RIOConnectTable[0], 0, sizeof(struct Map) * TOTAL_MAP_ENTRIES);
for (Host = 0; Host < RIO_HOSTS; Host++) {
rio_dprintk(RIO_DEBUG_TABLE, "Processing host %d\n", Host);
HostP = &p->RIOHosts[Host];
rio_spin_lock_irqsave(&HostP->HostLock, flags);
MapP = &p->RIOConnectTable[Next++];
MapP->HostUniqueNum = HostP->UniqueNum;
if ((HostP->Flags & RUN_STATE) != RC_RUNNING) {
rio_spin_unlock_irqrestore(&HostP->HostLock, flags);
continue;
}
MapP->RtaUniqueNum = 0;
MapP->ID = 0;
MapP->Flags = SLOT_IN_USE;
MapP->SysPort = NO_PORT;
for (link = 0; link < LINKS_PER_UNIT; link++)
MapP->Topology[link] = HostP->Topology[link];
memcpy(MapP->Name, HostP->Name, MAX_NAME_LEN);
for (Rup = 0; Rup < MAX_RUP; Rup++) {
if (HostP->Mapping[Rup].Flags & (SLOT_IN_USE | SLOT_TENTATIVE)) {
p->RIOConnectTable[Next] = HostP->Mapping[Rup];
if (HostP->Mapping[Rup].Flags & SLOT_IN_USE)
p->RIOConnectTable[Next].Flags |= SLOT_IN_USE;
if (HostP->Mapping[Rup].Flags & SLOT_TENTATIVE)
p->RIOConnectTable[Next].Flags |= SLOT_TENTATIVE;
if (HostP->Mapping[Rup].Flags & RTA16_SECOND_SLOT)
p->RIOConnectTable[Next].Flags |= RTA16_SECOND_SLOT;
Next++;
}
}
rio_spin_unlock_irqrestore(&HostP->HostLock, flags);
}
return 0;
}
/*
** config.rio has taken a dislike to one of the gross maps entries.
** if the entry is suitably inactive, then we can gob on it and remove
** it from the table.
*/
int RIODeleteRta(struct rio_info *p, struct Map *MapP)
{
int host, entry, port, link;
int SysPort;
struct Host *HostP;
struct Map *HostMapP;
struct Port *PortP;
int work_done = 0;
unsigned long lock_flags, sem_flags;
rio_dprintk(RIO_DEBUG_TABLE, "Delete entry on host %x, rta %x\n", MapP->HostUniqueNum, MapP->RtaUniqueNum);
for (host = 0; host < p->RIONumHosts; host++) {
HostP = &p->RIOHosts[host];
rio_spin_lock_irqsave(&HostP->HostLock, lock_flags);
if ((HostP->Flags & RUN_STATE) != RC_RUNNING) {
rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
continue;
}
for (entry = 0; entry < MAX_RUP; entry++) {
if (MapP->RtaUniqueNum == HostP->Mapping[entry].RtaUniqueNum) {
HostMapP = &HostP->Mapping[entry];
rio_dprintk(RIO_DEBUG_TABLE, "Found entry offset %d on host %s\n", entry, HostP->Name);
/*
** Check all four links of the unit are disconnected
*/
for (link = 0; link < LINKS_PER_UNIT; link++) {
if (HostMapP->Topology[link].Unit != ROUTE_DISCONNECT) {
rio_dprintk(RIO_DEBUG_TABLE, "Entry is in use and cannot be deleted!\n");
p->RIOError.Error = UNIT_IS_IN_USE;
rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
return -EBUSY;
}
}
/*
** Slot has been allocated, BUT not booted/routed/
** connected/selected or anything else-ed
*/
SysPort = HostMapP->SysPort;
if (SysPort != NO_PORT) {
for (port = SysPort; port < SysPort + PORTS_PER_RTA; port++) {
PortP = p->RIOPortp[port];
rio_dprintk(RIO_DEBUG_TABLE, "Unmap port\n");
rio_spin_lock_irqsave(&PortP->portSem, sem_flags);
PortP->Mapped = 0;
if (PortP->State & (RIO_MOPEN | RIO_LOPEN)) {
rio_dprintk(RIO_DEBUG_TABLE, "Gob on port\n");
PortP->TxBufferIn = PortP->TxBufferOut = 0;
/* What should I do
wakeup( &PortP->TxBufferIn );
wakeup( &PortP->TxBufferOut);
*/
PortP->InUse = NOT_INUSE;
/* What should I do
wakeup( &PortP->InUse );
signal(PortP->TtyP->t_pgrp,SIGKILL);
ttyflush(PortP->TtyP,(FREAD|FWRITE));
*/
PortP->State |= RIO_CLOSING | RIO_DELETED;
}
/*
** For the second slot of a 16 port RTA, the
** driver needs to reset the changes made to
** the phb to port mappings in RIORouteRup.
*/
if (PortP->SecondBlock) {
u16 dest_unit = HostMapP->ID;
u16 dest_port = port - SysPort;
u16 __iomem *TxPktP;
struct PKT __iomem *Pkt;
for (TxPktP = PortP->TxStart; TxPktP <= PortP->TxEnd; TxPktP++) {
/*
** *TxPktP is the pointer to the
** transmit packet on the host card.
** This needs to be translated into
** a 32 bit pointer so it can be
** accessed from the driver.
*/
Pkt = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&*TxPktP));
rio_dprintk(RIO_DEBUG_TABLE, "Tx packet (%x) destination: Old %x:%x New %x:%x\n", readw(TxPktP), readb(&Pkt->dest_unit), readb(&Pkt->dest_port), dest_unit, dest_port);
writew(dest_unit, &Pkt->dest_unit);
writew(dest_port, &Pkt->dest_port);
}
rio_dprintk(RIO_DEBUG_TABLE, "Port %d phb destination: Old %x:%x New %x:%x\n", port, readb(&PortP->PhbP->destination) & 0xff, (readb(&PortP->PhbP->destination) >> 8) & 0xff, dest_unit, dest_port);
writew(dest_unit + (dest_port << 8), &PortP->PhbP->destination);
}
rio_spin_unlock_irqrestore(&PortP->portSem, sem_flags);
}
}
rio_dprintk(RIO_DEBUG_TABLE, "Entry nulled.\n");
memset(HostMapP, 0, sizeof(struct Map));
work_done++;
}
}
rio_spin_unlock_irqrestore(&HostP->HostLock, lock_flags);
}
/* XXXXX lock me up */
for (entry = 0; entry < TOTAL_MAP_ENTRIES; entry++) {
if (p->RIOSavedTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
memset(&p->RIOSavedTable[entry], 0, sizeof(struct Map));
work_done++;
}
if (p->RIOConnectTable[entry].RtaUniqueNum == MapP->RtaUniqueNum) {
memset(&p->RIOConnectTable[entry], 0, sizeof(struct Map));
work_done++;
}
}
if (work_done)
return 0;
rio_dprintk(RIO_DEBUG_TABLE, "Couldn't find entry to be deleted\n");
p->RIOError.Error = COULDNT_FIND_ENTRY;
return -ENXIO;
}
int RIOAssignRta(struct rio_info *p, struct Map *MapP)
{
int host;
struct Map *HostMapP;
char *sptr;
int link;
rio_dprintk(RIO_DEBUG_TABLE, "Assign entry on host %x, rta %x, ID %d, Sysport %d\n", MapP->HostUniqueNum, MapP->RtaUniqueNum, MapP->ID, (int) MapP->SysPort);
if ((MapP->ID != (u16) - 1) && ((int) MapP->ID < (int) 1 || (int) MapP->ID > MAX_RUP)) {
rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
return -EINVAL;
}
if (MapP->RtaUniqueNum == 0) {
rio_dprintk(RIO_DEBUG_TABLE, "Rta Unique number zero!\n");
p->RIOError.Error = RTA_UNIQUE_NUMBER_ZERO;
return -EINVAL;
}
if ((MapP->SysPort != NO_PORT) && (MapP->SysPort % PORTS_PER_RTA)) {
rio_dprintk(RIO_DEBUG_TABLE, "Port %d not multiple of %d!\n", (int) MapP->SysPort, PORTS_PER_RTA);
p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
return -EINVAL;
}
if ((MapP->SysPort != NO_PORT) && (MapP->SysPort >= RIO_PORTS)) {
rio_dprintk(RIO_DEBUG_TABLE, "Port %d not valid!\n", (int) MapP->SysPort);
p->RIOError.Error = TTY_NUMBER_OUT_OF_RANGE;
return -EINVAL;
}
/*
** Copy the name across to the map entry.
*/
MapP->Name[MAX_NAME_LEN - 1] = '\0';
sptr = MapP->Name;
while (*sptr) {
if (*sptr < ' ' || *sptr > '~') {
rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
p->RIOError.Error = BAD_CHARACTER_IN_NAME;
return -EINVAL;
}
sptr++;
}
for (host = 0; host < p->RIONumHosts; host++) {
if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
p->RIOError.Error = HOST_NOT_RUNNING;
return -ENXIO;
}
/*
** Now we have a host we need to allocate an ID
** if the entry does not already have one.
*/
if (MapP->ID == (u16) - 1) {
int nNewID;
rio_dprintk(RIO_DEBUG_TABLE, "Attempting to get a new ID for rta \"%s\"\n", MapP->Name);
/*
** The idea here is to allow RTA's to be assigned
** before they actually appear on the network.
** This allows the addition of RTA's without having
** to plug them in.
** What we do is:
** - Find a free ID and allocate it to the RTA.
** - If this map entry is the second half of a
** 16 port entry then find the other half and
** make sure the 2 cross reference each other.
*/
if (RIOFindFreeID(p, &p->RIOHosts[host], &nNewID, NULL) != 0) {
p->RIOError.Error = COULDNT_FIND_ENTRY;
return -EBUSY;
}
MapP->ID = (u16) nNewID + 1;
rio_dprintk(RIO_DEBUG_TABLE, "Allocated ID %d for this new RTA.\n", MapP->ID);
HostMapP = &p->RIOHosts[host].Mapping[nNewID];
HostMapP->RtaUniqueNum = MapP->RtaUniqueNum;
HostMapP->HostUniqueNum = MapP->HostUniqueNum;
HostMapP->ID = MapP->ID;
for (link = 0; link < LINKS_PER_UNIT; link++) {
HostMapP->Topology[link].Unit = ROUTE_DISCONNECT;
HostMapP->Topology[link].Link = NO_LINK;
}
if (MapP->Flags & RTA16_SECOND_SLOT) {
int unit;
for (unit = 0; unit < MAX_RUP; unit++)
if (p->RIOHosts[host].Mapping[unit].RtaUniqueNum == MapP->RtaUniqueNum)
break;
if (unit == MAX_RUP) {
p->RIOError.Error = COULDNT_FIND_ENTRY;
return -EBUSY;
}
HostMapP->Flags |= RTA16_SECOND_SLOT;
HostMapP->ID2 = MapP->ID2 = p->RIOHosts[host].Mapping[unit].ID;
p->RIOHosts[host].Mapping[unit].ID2 = MapP->ID;
rio_dprintk(RIO_DEBUG_TABLE, "Cross referenced id %d to ID %d.\n", MapP->ID, p->RIOHosts[host].Mapping[unit].ID);
}
}
HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];
if (HostMapP->Flags & SLOT_IN_USE) {
rio_dprintk(RIO_DEBUG_TABLE, "Map table slot for ID %d is already in use.\n", MapP->ID);
p->RIOError.Error = ID_ALREADY_IN_USE;
return -EBUSY;
}
/*
** Assign the sys ports and the name, and mark the slot as
** being in use.
*/
HostMapP->SysPort = MapP->SysPort;
if ((MapP->Flags & RTA16_SECOND_SLOT) == 0)
memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN);
HostMapP->Flags = SLOT_IN_USE | RTA_BOOTED;
#ifdef NEED_TO_FIX
RIO_SV_BROADCAST(p->RIOHosts[host].svFlags[MapP->ID - 1]);
#endif
if (MapP->Flags & RTA16_SECOND_SLOT)
HostMapP->Flags |= RTA16_SECOND_SLOT;
RIOReMapPorts(p, &p->RIOHosts[host], HostMapP);
/*
** Adjust 2nd block of 8 phbs
*/
if (MapP->Flags & RTA16_SECOND_SLOT)
RIOFixPhbs(p, &p->RIOHosts[host], HostMapP->ID - 1);
if (HostMapP->SysPort != NO_PORT) {
if (HostMapP->SysPort < p->RIOFirstPortsBooted)
p->RIOFirstPortsBooted = HostMapP->SysPort;
if (HostMapP->SysPort > p->RIOLastPortsBooted)
p->RIOLastPortsBooted = HostMapP->SysPort;
}
if (MapP->Flags & RTA16_SECOND_SLOT)
rio_dprintk(RIO_DEBUG_TABLE, "Second map of RTA %s added to configuration\n", p->RIOHosts[host].Mapping[MapP->ID2 - 1].Name);
else
rio_dprintk(RIO_DEBUG_TABLE, "RTA %s added to configuration\n", MapP->Name);
return 0;
}
}
p->RIOError.Error = UNKNOWN_HOST_NUMBER;
rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
return -ENXIO;
}
int RIOReMapPorts(struct rio_info *p, struct Host *HostP, struct Map *HostMapP)
{
struct Port *PortP;
unsigned int SubEnt;
unsigned int HostPort;
unsigned int SysPort;
u16 RtaType;
unsigned long flags;
rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d to id %d\n", (int) HostMapP->SysPort, HostMapP->ID);
/*
** We need to tell the UnixRups which sysport the rup corresponds to
*/
HostP->UnixRups[HostMapP->ID - 1].BaseSysPort = HostMapP->SysPort;
if (HostMapP->SysPort == NO_PORT)
return (0);
RtaType = GetUnitType(HostMapP->RtaUniqueNum);
rio_dprintk(RIO_DEBUG_TABLE, "Mapping sysport %d-%d\n", (int) HostMapP->SysPort, (int) HostMapP->SysPort + PORTS_PER_RTA - 1);
/*
** now map each of its eight ports
*/
for (SubEnt = 0; SubEnt < PORTS_PER_RTA; SubEnt++) {
rio_dprintk(RIO_DEBUG_TABLE, "subent = %d, HostMapP->SysPort = %d\n", SubEnt, (int) HostMapP->SysPort);
SysPort = HostMapP->SysPort + SubEnt; /* portnumber within system */
/* portnumber on host */
HostPort = (HostMapP->ID - 1) * PORTS_PER_RTA + SubEnt;
rio_dprintk(RIO_DEBUG_TABLE, "c1 p = %p, p->rioPortp = %p\n", p, p->RIOPortp);
PortP = p->RIOPortp[SysPort];
rio_dprintk(RIO_DEBUG_TABLE, "Map port\n");
/*
** Point at all the real neat data structures
*/
rio_spin_lock_irqsave(&PortP->portSem, flags);
PortP->HostP = HostP;
PortP->Caddr = HostP->Caddr;
/*
** The PhbP cannot be filled in yet
** unless the host has been booted
*/
if ((HostP->Flags & RUN_STATE) == RC_RUNNING) {
struct PHB __iomem *PhbP = PortP->PhbP = &HostP->PhbP[HostPort];
PortP->TxAdd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_add));
PortP->TxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_start));
PortP->TxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->tx_end));
PortP->RxRemove = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_remove));
PortP->RxStart = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_start));
PortP->RxEnd = (u16 __iomem *) RIO_PTR(HostP->Caddr, readw(&PhbP->rx_end));
} else
PortP->PhbP = NULL;
/*
** port related flags
*/
PortP->HostPort = HostPort;
/*
** For each part of a 16 port RTA, RupNum is ID - 1.
*/
PortP->RupNum = HostMapP->ID - 1;
if (HostMapP->Flags & RTA16_SECOND_SLOT) {
PortP->ID2 = HostMapP->ID2 - 1;
PortP->SecondBlock = 1;
} else {
PortP->ID2 = 0;
PortP->SecondBlock = 0;
}
PortP->RtaUniqueNum = HostMapP->RtaUniqueNum;
/*
** If the port was already mapped then thats all we need to do.
*/
if (PortP->Mapped) {
rio_spin_unlock_irqrestore(&PortP->portSem, flags);
continue;
} else
HostMapP->Flags &= ~RTA_NEWBOOT;
PortP->State = 0;
PortP->Config = 0;
/*
** Check out the module type - if it is special (read only etc.)
** then we need to set flags in the PortP->Config.
** Note: For 16 port RTA, all ports are of the same type.
*/
if (RtaType == TYPE_RTA16) {
PortP->Config |= p->RIOModuleTypes[HostP->UnixRups[HostMapP->ID - 1].ModTypes].Flags[SubEnt % PORTS_PER_MODULE];
} else {
if (SubEnt < PORTS_PER_MODULE)
PortP->Config |= p->RIOModuleTypes[LONYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
else
PortP->Config |= p->RIOModuleTypes[HINYBLE(HostP->UnixRups[HostMapP->ID - 1].ModTypes)].Flags[SubEnt % PORTS_PER_MODULE];
}
/*
** more port related flags
*/
PortP->PortState = 0;
PortP->ModemLines = 0;
PortP->ModemState = 0;
PortP->CookMode = COOK_WELL;
PortP->ParamSem = 0;
PortP->FlushCmdBodge = 0;
PortP->WflushFlag = 0;
PortP->MagicFlags = 0;
PortP->Lock = 0;
PortP->Store = 0;
PortP->FirstOpen = 1;
/*
** Buffers 'n things
*/
PortP->RxDataStart = 0;
PortP->Cor2Copy = 0;
PortP->Name = &HostMapP->Name[0];
PortP->statsGather = 0;
PortP->txchars = 0;
PortP->rxchars = 0;
PortP->opens = 0;
PortP->closes = 0;
PortP->ioctls = 0;
if (PortP->TxRingBuffer)
memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
else if (p->RIOBufferSize) {
PortP->TxRingBuffer = kzalloc(p->RIOBufferSize, GFP_KERNEL);
}
PortP->TxBufferOut = 0;
PortP->TxBufferIn = 0;
PortP->Debug = 0;
/*
** LastRxTgl stores the state of the rx toggle bit for this
** port, to be compared with the state of the next pkt received.
** If the same, we have received the same rx pkt from the RTA
** twice. Initialise to a value not equal to PHB_RX_TGL or 0.
*/
PortP->LastRxTgl = ~(u8) PHB_RX_TGL;
/*
** and mark the port as usable
*/
PortP->Mapped = 1;
rio_spin_unlock_irqrestore(&PortP->portSem, flags);
}
if (HostMapP->SysPort < p->RIOFirstPortsMapped)
p->RIOFirstPortsMapped = HostMapP->SysPort;
if (HostMapP->SysPort > p->RIOLastPortsMapped)
p->RIOLastPortsMapped = HostMapP->SysPort;
return 0;
}
int RIOChangeName(struct rio_info *p, struct Map *MapP)
{
int host;
struct Map *HostMapP;
char *sptr;
rio_dprintk(RIO_DEBUG_TABLE, "Change name entry on host %x, rta %x, ID %d, Sysport %d\n", MapP->HostUniqueNum, MapP->RtaUniqueNum, MapP->ID, (int) MapP->SysPort);
if (MapP->ID > MAX_RUP) {
rio_dprintk(RIO_DEBUG_TABLE, "Bad ID in map entry!\n");
p->RIOError.Error = ID_NUMBER_OUT_OF_RANGE;
return -EINVAL;
}
MapP->Name[MAX_NAME_LEN - 1] = '\0';
sptr = MapP->Name;
while (*sptr) {
if (*sptr < ' ' || *sptr > '~') {
rio_dprintk(RIO_DEBUG_TABLE, "Name entry contains non-printing characters!\n");
p->RIOError.Error = BAD_CHARACTER_IN_NAME;
return -EINVAL;
}
sptr++;
}
for (host = 0; host < p->RIONumHosts; host++) {
if (MapP->HostUniqueNum == p->RIOHosts[host].UniqueNum) {
if ((p->RIOHosts[host].Flags & RUN_STATE) != RC_RUNNING) {
p->RIOError.Error = HOST_NOT_RUNNING;
return -ENXIO;
}
if (MapP->ID == 0) {
memcpy(p->RIOHosts[host].Name, MapP->Name, MAX_NAME_LEN);
return 0;
}
HostMapP = &p->RIOHosts[host].Mapping[MapP->ID - 1];
if (HostMapP->RtaUniqueNum != MapP->RtaUniqueNum) {
p->RIOError.Error = RTA_NUMBER_WRONG;
return -ENXIO;
}
memcpy(HostMapP->Name, MapP->Name, MAX_NAME_LEN);
return 0;
}
}
p->RIOError.Error = UNKNOWN_HOST_NUMBER;
rio_dprintk(RIO_DEBUG_TABLE, "Unknown host %x\n", MapP->HostUniqueNum);
return -ENXIO;
}
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