Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | ** ----------------------------------------------------------------------------- |
| 3 | ** |
| 4 | ** Perle Specialix driver for Linux |
| 5 | ** ported from the existing SCO driver source |
| 6 | ** |
| 7 | * |
| 8 | * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 23 | ** |
| 24 | ** Module : riocmd.c |
| 25 | ** SID : 1.2 |
| 26 | ** Last Modified : 11/6/98 10:33:41 |
| 27 | ** Retrieved : 11/6/98 10:33:49 |
| 28 | ** |
| 29 | ** ident @(#)riocmd.c 1.2 |
| 30 | ** |
| 31 | ** ----------------------------------------------------------------------------- |
| 32 | */ |
| 33 | #ifdef SCCS_LABELS |
| 34 | static char *_riocmd_c_sccs_ = "@(#)riocmd.c 1.2"; |
| 35 | #endif |
| 36 | |
| 37 | #include <linux/module.h> |
| 38 | #include <linux/slab.h> |
| 39 | #include <linux/errno.h> |
| 40 | #include <linux/tty.h> |
| 41 | #include <asm/io.h> |
| 42 | #include <asm/system.h> |
| 43 | #include <asm/string.h> |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 44 | #include <asm/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | |
| 46 | #include <linux/termios.h> |
| 47 | #include <linux/serial.h> |
| 48 | |
| 49 | #include <linux/generic_serial.h> |
| 50 | |
| 51 | #include "linux_compat.h" |
| 52 | #include "rio_linux.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | #include "pkt.h" |
| 54 | #include "daemon.h" |
| 55 | #include "rio.h" |
| 56 | #include "riospace.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include "cmdpkt.h" |
| 58 | #include "map.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #include "rup.h" |
| 60 | #include "port.h" |
| 61 | #include "riodrvr.h" |
| 62 | #include "rioinfo.h" |
| 63 | #include "func.h" |
| 64 | #include "errors.h" |
| 65 | #include "pci.h" |
| 66 | |
| 67 | #include "parmmap.h" |
| 68 | #include "unixrup.h" |
| 69 | #include "board.h" |
| 70 | #include "host.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | #include "phb.h" |
| 72 | #include "link.h" |
| 73 | #include "cmdblk.h" |
| 74 | #include "route.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | #include "cirrus.h" |
| 76 | |
| 77 | |
| 78 | static struct IdentifyRta IdRta; |
| 79 | static struct KillNeighbour KillUnit; |
| 80 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 81 | int RIOFoadRta(struct Host *HostP, struct Map *MapP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | { |
| 83 | struct CmdBlk *CmdBlkP; |
| 84 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 85 | rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | CmdBlkP = RIOGetCmdBlk(); |
| 88 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 89 | if (!CmdBlkP) { |
| 90 | rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: GetCmdBlk failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | return -ENXIO; |
| 92 | } |
| 93 | |
| 94 | CmdBlkP->Packet.dest_unit = MapP->ID; |
| 95 | CmdBlkP->Packet.dest_port = BOOT_RUP; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 96 | CmdBlkP->Packet.src_unit = 0; |
| 97 | CmdBlkP->Packet.src_port = BOOT_RUP; |
| 98 | CmdBlkP->Packet.len = 0x84; |
| 99 | CmdBlkP->Packet.data[0] = IFOAD; |
| 100 | CmdBlkP->Packet.data[1] = 0; |
| 101 | CmdBlkP->Packet.data[2] = IFOAD_MAGIC & 0xFF; |
| 102 | CmdBlkP->Packet.data[3] = (IFOAD_MAGIC >> 8) & 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 104 | if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { |
| 105 | rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: Failed to queue foad command\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | return -EIO; |
| 107 | } |
| 108 | return 0; |
| 109 | } |
| 110 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 111 | int RIOZombieRta(struct Host *HostP, struct Map *MapP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | { |
| 113 | struct CmdBlk *CmdBlkP; |
| 114 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 115 | rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | |
| 117 | CmdBlkP = RIOGetCmdBlk(); |
| 118 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 119 | if (!CmdBlkP) { |
| 120 | rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: GetCmdBlk failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | return -ENXIO; |
| 122 | } |
| 123 | |
| 124 | CmdBlkP->Packet.dest_unit = MapP->ID; |
| 125 | CmdBlkP->Packet.dest_port = BOOT_RUP; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 126 | CmdBlkP->Packet.src_unit = 0; |
| 127 | CmdBlkP->Packet.src_port = BOOT_RUP; |
| 128 | CmdBlkP->Packet.len = 0x84; |
| 129 | CmdBlkP->Packet.data[0] = ZOMBIE; |
| 130 | CmdBlkP->Packet.data[1] = 0; |
| 131 | CmdBlkP->Packet.data[2] = ZOMBIE_MAGIC & 0xFF; |
| 132 | CmdBlkP->Packet.data[3] = (ZOMBIE_MAGIC >> 8) & 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 134 | if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { |
| 135 | rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: Failed to queue zombie command\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | return -EIO; |
| 137 | } |
| 138 | return 0; |
| 139 | } |
| 140 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 141 | int RIOCommandRta(struct rio_info *p, unsigned long RtaUnique, int (*func) (struct Host * HostP, struct Map * MapP)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 143 | unsigned int Host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 145 | rio_dprintk(RIO_DEBUG_CMD, "Command RTA 0x%lx func %p\n", RtaUnique, func); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 147 | if (!RtaUnique) |
| 148 | return (0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 150 | for (Host = 0; Host < p->RIONumHosts; Host++) { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 151 | unsigned int Rta; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | struct Host *HostP = &p->RIOHosts[Host]; |
| 153 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 154 | for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | struct Map *MapP = &HostP->Mapping[Rta]; |
| 156 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 157 | if (MapP->RtaUniqueNum == RtaUnique) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 158 | uint Link; |
| 159 | |
| 160 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 161 | ** now, lets just check we have a route to it... |
| 162 | ** IF the routing stuff is working, then one of the |
| 163 | ** topology entries for this unit will have a legit |
| 164 | ** route *somewhere*. We care not where - if its got |
| 165 | ** any connections, we can get to it. |
| 166 | */ |
| 167 | for (Link = 0; Link < LINKS_PER_UNIT; Link++) { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 168 | if (MapP->Topology[Link].Unit <= (u8) MAX_RUP) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 170 | ** Its worth trying the operation... |
| 171 | */ |
| 172 | return (*func) (HostP, MapP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | } |
| 174 | } |
| 175 | } |
| 176 | } |
| 177 | } |
| 178 | return -ENXIO; |
| 179 | } |
| 180 | |
| 181 | |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 182 | int RIOIdentifyRta(struct rio_info *p, void __user * arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 184 | unsigned int Host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 186 | if (copy_from_user(&IdRta, arg, sizeof(IdRta))) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 187 | rio_dprintk(RIO_DEBUG_CMD, "RIO_IDENTIFY_RTA copy failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | p->RIOError.Error = COPYIN_FAILED; |
| 189 | return -EFAULT; |
| 190 | } |
| 191 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 192 | for (Host = 0; Host < p->RIONumHosts; Host++) { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 193 | unsigned int Rta; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | struct Host *HostP = &p->RIOHosts[Host]; |
| 195 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 196 | for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | struct Map *MapP = &HostP->Mapping[Rta]; |
| 198 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 199 | if (MapP->RtaUniqueNum == IdRta.RtaUnique) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | uint Link; |
| 201 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 202 | ** now, lets just check we have a route to it... |
| 203 | ** IF the routing stuff is working, then one of the |
| 204 | ** topology entries for this unit will have a legit |
| 205 | ** route *somewhere*. We care not where - if its got |
| 206 | ** any connections, we can get to it. |
| 207 | */ |
| 208 | for (Link = 0; Link < LINKS_PER_UNIT; Link++) { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 209 | if (MapP->Topology[Link].Unit <= (u8) MAX_RUP) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 211 | ** Its worth trying the operation... |
| 212 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | struct CmdBlk *CmdBlkP; |
| 214 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 215 | rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
| 217 | CmdBlkP = RIOGetCmdBlk(); |
| 218 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 219 | if (!CmdBlkP) { |
| 220 | rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: GetCmdBlk failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | return -ENXIO; |
| 222 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 223 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | CmdBlkP->Packet.dest_unit = MapP->ID; |
| 225 | CmdBlkP->Packet.dest_port = BOOT_RUP; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 226 | CmdBlkP->Packet.src_unit = 0; |
| 227 | CmdBlkP->Packet.src_port = BOOT_RUP; |
| 228 | CmdBlkP->Packet.len = 0x84; |
| 229 | CmdBlkP->Packet.data[0] = IDENTIFY; |
| 230 | CmdBlkP->Packet.data[1] = 0; |
| 231 | CmdBlkP->Packet.data[2] = IdRta.ID; |
| 232 | |
| 233 | if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { |
| 234 | rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: Failed to queue command\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | return -EIO; |
| 236 | } |
| 237 | return 0; |
| 238 | } |
| 239 | } |
| 240 | } |
| 241 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 242 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | return -ENOENT; |
| 244 | } |
| 245 | |
| 246 | |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 247 | int RIOKillNeighbour(struct rio_info *p, void __user * arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | { |
| 249 | uint Host; |
| 250 | uint ID; |
| 251 | struct Host *HostP; |
| 252 | struct CmdBlk *CmdBlkP; |
| 253 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 254 | rio_dprintk(RIO_DEBUG_CMD, "KILL HOST NEIGHBOUR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 256 | if (copy_from_user(&KillUnit, arg, sizeof(KillUnit))) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 257 | rio_dprintk(RIO_DEBUG_CMD, "RIO_KILL_NEIGHBOUR copy failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | p->RIOError.Error = COPYIN_FAILED; |
| 259 | return -EFAULT; |
| 260 | } |
| 261 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 262 | if (KillUnit.Link > 3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | return -ENXIO; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 264 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | CmdBlkP = RIOGetCmdBlk(); |
| 266 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 267 | if (!CmdBlkP) { |
| 268 | rio_dprintk(RIO_DEBUG_CMD, "UFOAD: GetCmdBlk failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | return -ENXIO; |
| 270 | } |
| 271 | |
| 272 | CmdBlkP->Packet.dest_unit = 0; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 273 | CmdBlkP->Packet.src_unit = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | CmdBlkP->Packet.dest_port = BOOT_RUP; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 275 | CmdBlkP->Packet.src_port = BOOT_RUP; |
| 276 | CmdBlkP->Packet.len = 0x84; |
| 277 | CmdBlkP->Packet.data[0] = UFOAD; |
| 278 | CmdBlkP->Packet.data[1] = KillUnit.Link; |
| 279 | CmdBlkP->Packet.data[2] = UFOAD_MAGIC & 0xFF; |
| 280 | CmdBlkP->Packet.data[3] = (UFOAD_MAGIC >> 8) & 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 282 | for (Host = 0; Host < p->RIONumHosts; Host++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | ID = 0; |
| 284 | HostP = &p->RIOHosts[Host]; |
| 285 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 286 | if (HostP->UniqueNum == KillUnit.UniqueNum) { |
| 287 | if (RIOQueueCmdBlk(HostP, RTAS_PER_HOST + KillUnit.Link, CmdBlkP) == RIO_FAIL) { |
| 288 | rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | return -EIO; |
| 290 | } |
| 291 | return 0; |
| 292 | } |
| 293 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 294 | for (ID = 0; ID < RTAS_PER_HOST; ID++) { |
| 295 | if (HostP->Mapping[ID].RtaUniqueNum == KillUnit.UniqueNum) { |
| 296 | CmdBlkP->Packet.dest_unit = ID + 1; |
| 297 | if (RIOQueueCmdBlk(HostP, ID, CmdBlkP) == RIO_FAIL) { |
| 298 | rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | return -EIO; |
| 300 | } |
| 301 | return 0; |
| 302 | } |
| 303 | } |
| 304 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 305 | RIOFreeCmdBlk(CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | return -ENXIO; |
| 307 | } |
| 308 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 309 | int RIOSuspendBootRta(struct Host *HostP, int ID, int Link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | { |
| 311 | struct CmdBlk *CmdBlkP; |
| 312 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 313 | rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA ID %d, link %c\n", ID, 'A' + Link); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | |
| 315 | CmdBlkP = RIOGetCmdBlk(); |
| 316 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 317 | if (!CmdBlkP) { |
| 318 | rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: GetCmdBlk failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | return -ENXIO; |
| 320 | } |
| 321 | |
| 322 | CmdBlkP->Packet.dest_unit = ID; |
| 323 | CmdBlkP->Packet.dest_port = BOOT_RUP; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 324 | CmdBlkP->Packet.src_unit = 0; |
| 325 | CmdBlkP->Packet.src_port = BOOT_RUP; |
| 326 | CmdBlkP->Packet.len = 0x84; |
| 327 | CmdBlkP->Packet.data[0] = IWAIT; |
| 328 | CmdBlkP->Packet.data[1] = Link; |
| 329 | CmdBlkP->Packet.data[2] = IWAIT_MAGIC & 0xFF; |
| 330 | CmdBlkP->Packet.data[3] = (IWAIT_MAGIC >> 8) & 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 332 | if (RIOQueueCmdBlk(HostP, ID - 1, CmdBlkP) == RIO_FAIL) { |
| 333 | rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: Failed to queue iwait command\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | return -EIO; |
| 335 | } |
| 336 | return 0; |
| 337 | } |
| 338 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 339 | int RIOFoadWakeup(struct rio_info *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | { |
| 341 | int port; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 342 | struct Port *PortP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | unsigned long flags; |
| 344 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 345 | for (port = 0; port < RIO_PORTS; port++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | PortP = p->RIOPortp[port]; |
| 347 | |
| 348 | rio_spin_lock_irqsave(&PortP->portSem, flags); |
| 349 | PortP->Config = 0; |
| 350 | PortP->State = 0; |
| 351 | PortP->InUse = NOT_INUSE; |
| 352 | PortP->PortState = 0; |
| 353 | PortP->FlushCmdBodge = 0; |
| 354 | PortP->ModemLines = 0; |
| 355 | PortP->ModemState = 0; |
| 356 | PortP->CookMode = 0; |
| 357 | PortP->ParamSem = 0; |
| 358 | PortP->Mapped = 0; |
| 359 | PortP->WflushFlag = 0; |
| 360 | PortP->MagicFlags = 0; |
| 361 | PortP->RxDataStart = 0; |
| 362 | PortP->TxBufferIn = 0; |
| 363 | PortP->TxBufferOut = 0; |
| 364 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
| 365 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 366 | return (0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | } |
| 368 | |
| 369 | /* |
| 370 | ** Incoming command on the COMMAND_RUP to be processed. |
| 371 | */ |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 372 | static int RIOCommandRup(struct rio_info *p, uint Rup, struct Host *HostP, struct PKT __iomem *PacketP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 373 | { |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 374 | struct PktCmd __iomem *PktCmdP = (struct PktCmd __iomem *)PacketP->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | struct Port *PortP; |
| 376 | struct UnixRup *UnixRupP; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 377 | unsigned short SysPort; |
| 378 | unsigned short ReportedModemStatus; |
| 379 | unsigned short rup; |
| 380 | unsigned short subCommand; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | unsigned long flags; |
| 382 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 383 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 386 | ** 16 port RTA note: |
| 387 | ** Command rup packets coming from the RTA will have pkt->data[1] (which |
| 388 | ** translates to PktCmdP->PhbNum) set to the host port number for the |
| 389 | ** particular unit. To access the correct BaseSysPort for a 16 port RTA, |
| 390 | ** we can use PhbNum to get the rup number for the appropriate 8 port |
| 391 | ** block (for the first block, this should be equal to 'Rup'). |
| 392 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 393 | rup = readb(&PktCmdP->PhbNum) / (unsigned short) PORTS_PER_RTA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | UnixRupP = &HostP->UnixRups[rup]; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 395 | SysPort = UnixRupP->BaseSysPort + (readb(&PktCmdP->PhbNum) % (unsigned short) PORTS_PER_RTA); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 396 | rio_dprintk(RIO_DEBUG_CMD, "Command on rup %d, port %d\n", rup, SysPort); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 398 | if (UnixRupP->BaseSysPort == NO_PORT) { |
| 399 | rio_dprintk(RIO_DEBUG_CMD, "OBSCURE ERROR!\n"); |
| 400 | rio_dprintk(RIO_DEBUG_CMD, "Diagnostics follow. Please WRITE THESE DOWN and report them to Specialix Technical Support\n"); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 401 | rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Host number %Zd, name ``%s''\n", HostP - p->RIOHosts, HostP->Name); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 402 | rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Rup number 0x%x\n", rup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | |
Eric Sesterhenn / Snakebyte | 84ea776 | 2007-05-10 22:22:48 -0700 | [diff] [blame] | 404 | if (Rup < (unsigned short) MAX_RUP) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 405 | rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for RTA ``%s''\n", HostP->Mapping[Rup].Name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | } else |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 407 | rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for link ``%c'' of host ``%s''\n", ('A' + Rup - MAX_RUP), HostP->Name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
Al Viro | 92af11c | 2006-05-27 02:24:14 -0400 | [diff] [blame] | 409 | rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Destination 0x%x:0x%x\n", readb(&PacketP->dest_unit), readb(&PacketP->dest_port)); |
| 410 | rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Source 0x%x:0x%x\n", readb(&PacketP->src_unit), readb(&PacketP->src_port)); |
| 411 | rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Length 0x%x (%d)\n", readb(&PacketP->len), readb(&PacketP->len)); |
| 412 | rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Control 0x%x (%d)\n", readb(&PacketP->control), readb(&PacketP->control)); |
| 413 | rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Check 0x%x (%d)\n", readw(&PacketP->csum), readw(&PacketP->csum)); |
| 414 | rio_dprintk(RIO_DEBUG_CMD, "COMMAND information: Host Port Number 0x%x, " "Command Code 0x%x\n", readb(&PktCmdP->PhbNum), readb(&PktCmdP->Command)); |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 415 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 417 | PortP = p->RIOPortp[SysPort]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 418 | rio_spin_lock_irqsave(&PortP->portSem, flags); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 419 | switch (readb(&PktCmdP->Command)) { |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 420 | case RIOC_BREAK_RECEIVED: |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 421 | rio_dprintk(RIO_DEBUG_CMD, "Received a break!\n"); |
| 422 | /* If the current line disc. is not multi-threading and |
| 423 | the current processor is not the default, reset rup_intr |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 424 | and return 0 to ensure that the command packet is |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 425 | not freed. */ |
| 426 | /* Call tmgr HANGUP HERE */ |
| 427 | /* Fix this later when every thing works !!!! RAMRAJ */ |
| 428 | gs_got_break(&PortP->gs); |
| 429 | break; |
| 430 | |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 431 | case RIOC_COMPLETE: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 432 | rio_dprintk(RIO_DEBUG_CMD, "Command complete on phb %d host %Zd\n", readb(&PktCmdP->PhbNum), HostP - p->RIOHosts); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 433 | subCommand = 1; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 434 | switch (readb(&PktCmdP->SubCommand)) { |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 435 | case RIOC_MEMDUMP: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 436 | rio_dprintk(RIO_DEBUG_CMD, "Memory dump cmd (0x%x) from addr 0x%x\n", readb(&PktCmdP->SubCommand), readw(&PktCmdP->SubAddr)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | break; |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 438 | case RIOC_READ_REGISTER: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 439 | rio_dprintk(RIO_DEBUG_CMD, "Read register (0x%x)\n", readw(&PktCmdP->SubAddr)); |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 440 | p->CdRegister = (readb(&PktCmdP->ModemStatus) & RIOC_MSVR1_HOST); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 441 | break; |
| 442 | default: |
| 443 | subCommand = 0; |
| 444 | break; |
| 445 | } |
| 446 | if (subCommand) |
| 447 | break; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 448 | rio_dprintk(RIO_DEBUG_CMD, "New status is 0x%x was 0x%x\n", readb(&PktCmdP->PortStatus), PortP->PortState); |
| 449 | if (PortP->PortState != readb(&PktCmdP->PortStatus)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 450 | rio_dprintk(RIO_DEBUG_CMD, "Mark status & wakeup\n"); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 451 | PortP->PortState = readb(&PktCmdP->PortStatus); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 452 | /* What should we do here ... |
| 453 | wakeup( &PortP->PortState ); |
| 454 | */ |
| 455 | } else |
| 456 | rio_dprintk(RIO_DEBUG_CMD, "No change\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 457 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 458 | /* FALLTHROUGH */ |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 459 | case RIOC_MODEM_STATUS: |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 460 | /* |
| 461 | ** Knock out the tbusy and tstop bits, as these are not relevant |
| 462 | ** to the check for modem status change (they're just there because |
| 463 | ** it's a convenient place to put them!). |
| 464 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 465 | ReportedModemStatus = readb(&PktCmdP->ModemStatus); |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 466 | if ((PortP->ModemState & RIOC_MSVR1_HOST) == |
| 467 | (ReportedModemStatus & RIOC_MSVR1_HOST)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 468 | rio_dprintk(RIO_DEBUG_CMD, "Modem status unchanged 0x%x\n", PortP->ModemState); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 470 | ** Update ModemState just in case tbusy or tstop states have |
| 471 | ** changed. |
| 472 | */ |
| 473 | PortP->ModemState = ReportedModemStatus; |
| 474 | } else { |
| 475 | rio_dprintk(RIO_DEBUG_CMD, "Modem status change from 0x%x to 0x%x\n", PortP->ModemState, ReportedModemStatus); |
| 476 | PortP->ModemState = ReportedModemStatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 477 | #ifdef MODEM_SUPPORT |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 478 | if (PortP->Mapped) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | /***********************************************************\ |
| 480 | ************************************************************* |
| 481 | *** *** |
| 482 | *** M O D E M S T A T E C H A N G E *** |
| 483 | *** *** |
| 484 | ************************************************************* |
| 485 | \***********************************************************/ |
| 486 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 487 | ** If the device is a modem, then check the modem |
| 488 | ** carrier. |
| 489 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | if (PortP->gs.tty == NULL) |
| 491 | break; |
| 492 | if (PortP->gs.tty->termios == NULL) |
| 493 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 495 | if (!(PortP->gs.tty->termios->c_cflag & CLOCAL) && ((PortP->State & (RIO_MOPEN | RIO_WOPEN)))) { |
| 496 | |
| 497 | rio_dprintk(RIO_DEBUG_CMD, "Is there a Carrier?\n"); |
| 498 | /* |
| 499 | ** Is there a carrier? |
| 500 | */ |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 501 | if (PortP->ModemState & RIOC_MSVR1_CD) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 502 | /* |
| 503 | ** Has carrier just appeared? |
| 504 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | if (!(PortP->State & RIO_CARR_ON)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 506 | rio_dprintk(RIO_DEBUG_CMD, "Carrier just came up.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 507 | PortP->State |= RIO_CARR_ON; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 508 | /* |
| 509 | ** wakeup anyone in WOPEN |
| 510 | */ |
| 511 | if (PortP->State & (PORT_ISOPEN | RIO_WOPEN)) |
| 512 | wake_up_interruptible(&PortP->gs.open_wait); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 513 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | } else { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 515 | /* |
| 516 | ** Has carrier just dropped? |
| 517 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | if (PortP->State & RIO_CARR_ON) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 519 | if (PortP->State & (PORT_ISOPEN | RIO_WOPEN | RIO_MOPEN)) |
| 520 | tty_hangup(PortP->gs.tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | PortP->State &= ~RIO_CARR_ON; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 522 | rio_dprintk(RIO_DEBUG_CMD, "Carrirer just went down\n"); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 523 | } |
| 524 | } |
| 525 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | #endif |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 528 | } |
| 529 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 530 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 531 | default: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 532 | rio_dprintk(RIO_DEBUG_CMD, "Unknown command %d on CMD_RUP of host %Zd\n", readb(&PktCmdP->Command), HostP - p->RIOHosts); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 533 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | } |
| 535 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
| 536 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 537 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 539 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 541 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | /* |
| 543 | ** The command mechanism: |
| 544 | ** Each rup has a chain of commands associated with it. |
| 545 | ** This chain is maintained by routines in this file. |
| 546 | ** Periodically we are called and we run a quick check of all the |
| 547 | ** active chains to determine if there is a command to be executed, |
| 548 | ** and if the rup is ready to accept it. |
| 549 | ** |
| 550 | */ |
| 551 | |
| 552 | /* |
| 553 | ** Allocate an empty command block. |
| 554 | */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 555 | struct CmdBlk *RIOGetCmdBlk(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 556 | { |
| 557 | struct CmdBlk *CmdBlkP; |
| 558 | |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 559 | CmdBlkP = kzalloc(sizeof(struct CmdBlk), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | return CmdBlkP; |
| 561 | } |
| 562 | |
| 563 | /* |
| 564 | ** Return a block to the head of the free list. |
| 565 | */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 566 | void RIOFreeCmdBlk(struct CmdBlk *CmdBlkP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 567 | { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 568 | kfree(CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | } |
| 570 | |
| 571 | /* |
| 572 | ** attach a command block to the list of commands to be performed for |
| 573 | ** a given rup. |
| 574 | */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 575 | int RIOQueueCmdBlk(struct Host *HostP, uint Rup, struct CmdBlk *CmdBlkP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | { |
| 577 | struct CmdBlk **Base; |
| 578 | struct UnixRup *UnixRupP; |
| 579 | unsigned long flags; |
| 580 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 581 | if (Rup >= (unsigned short) (MAX_RUP + LINKS_PER_UNIT)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 582 | rio_dprintk(RIO_DEBUG_CMD, "Illegal rup number %d in RIOQueueCmdBlk\n", Rup); |
| 583 | RIOFreeCmdBlk(CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | return RIO_FAIL; |
| 585 | } |
| 586 | |
| 587 | UnixRupP = &HostP->UnixRups[Rup]; |
| 588 | |
| 589 | rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 590 | |
| 591 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 592 | ** If the RUP is currently inactive, then put the request |
| 593 | ** straight on the RUP.... |
| 594 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 595 | if ((UnixRupP->CmdsWaitingP == NULL) && (UnixRupP->CmdPendingP == NULL) && (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE) && (CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP) |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 596 | : 1)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 597 | rio_dprintk(RIO_DEBUG_CMD, "RUP inactive-placing command straight on. Cmd byte is 0x%x\n", CmdBlkP->Packet.data[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | |
| 599 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 600 | ** Whammy! blat that pack! |
| 601 | */ |
Al Viro | 92af11c | 2006-05-27 02:24:14 -0400 | [diff] [blame] | 602 | HostP->Copy(&CmdBlkP->Packet, RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->txpkt)), sizeof(struct PKT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | |
| 604 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 605 | ** place command packet on the pending position. |
| 606 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 607 | UnixRupP->CmdPendingP = CmdBlkP; |
| 608 | |
| 609 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 610 | ** set the command register |
| 611 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 612 | writew(TX_PACKET_READY, &UnixRupP->RupP->txcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | |
| 614 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
| 615 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 616 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 618 | rio_dprintk(RIO_DEBUG_CMD, "RUP active - en-queing\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 620 | if (UnixRupP->CmdsWaitingP != NULL) |
| 621 | rio_dprintk(RIO_DEBUG_CMD, "Rup active - command waiting\n"); |
| 622 | if (UnixRupP->CmdPendingP != NULL) |
| 623 | rio_dprintk(RIO_DEBUG_CMD, "Rup active - command pending\n"); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 624 | if (readw(&UnixRupP->RupP->txcontrol) != TX_RUP_INACTIVE) |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 625 | rio_dprintk(RIO_DEBUG_CMD, "Rup active - command rup not ready\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | |
| 627 | Base = &UnixRupP->CmdsWaitingP; |
| 628 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 629 | rio_dprintk(RIO_DEBUG_CMD, "First try to queue cmdblk %p at %p\n", CmdBlkP, Base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 631 | while (*Base) { |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 632 | rio_dprintk(RIO_DEBUG_CMD, "Command cmdblk %p here\n", *Base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | Base = &((*Base)->NextP); |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 634 | rio_dprintk(RIO_DEBUG_CMD, "Now try to queue cmd cmdblk %p at %p\n", CmdBlkP, Base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | } |
| 636 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 637 | rio_dprintk(RIO_DEBUG_CMD, "Will queue cmdblk %p at %p\n", CmdBlkP, Base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
| 639 | *Base = CmdBlkP; |
| 640 | |
| 641 | CmdBlkP->NextP = NULL; |
| 642 | |
| 643 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
| 644 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 645 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | } |
| 647 | |
| 648 | /* |
| 649 | ** Here we go - if there is an empty rup, fill it! |
| 650 | ** must be called at splrio() or higher. |
| 651 | */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 652 | void RIOPollHostCommands(struct rio_info *p, struct Host *HostP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 653 | { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 654 | struct CmdBlk *CmdBlkP; |
| 655 | struct UnixRup *UnixRupP; |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 656 | struct PKT __iomem *PacketP; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 657 | unsigned short Rup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | unsigned long flags; |
| 659 | |
| 660 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 661 | Rup = MAX_RUP + LINKS_PER_UNIT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 662 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 663 | do { /* do this loop for each RUP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 665 | ** locate the rup we are processing & lock it |
| 666 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | UnixRupP = &HostP->UnixRups[--Rup]; |
| 668 | |
| 669 | spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 670 | |
| 671 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 672 | ** First check for incoming commands: |
| 673 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 674 | if (readw(&UnixRupP->RupP->rxcontrol) != RX_RUP_INACTIVE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | int FreeMe; |
| 676 | |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 677 | PacketP = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->rxpkt)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 679 | switch (readb(&PacketP->dest_port)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 680 | case BOOT_RUP: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 681 | rio_dprintk(RIO_DEBUG_CMD, "Incoming Boot %s packet '%x'\n", readb(&PacketP->len) & 0x80 ? "Command" : "Data", readb(&PacketP->data[0])); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 682 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
| 683 | FreeMe = RIOBootRup(p, Rup, HostP, PacketP); |
| 684 | rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 685 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 686 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 687 | case COMMAND_RUP: |
| 688 | /* |
| 689 | ** Free the RUP lock as loss of carrier causes a |
| 690 | ** ttyflush which will (eventually) call another |
| 691 | ** routine that uses the RUP lock. |
| 692 | */ |
| 693 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
| 694 | FreeMe = RIOCommandRup(p, Rup, HostP, PacketP); |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 695 | if (readb(&PacketP->data[5]) == RIOC_MEMDUMP) { |
Al Viro | 92af11c | 2006-05-27 02:24:14 -0400 | [diff] [blame] | 696 | rio_dprintk(RIO_DEBUG_CMD, "Memdump from 0x%x complete\n", readw(&(PacketP->data[6]))); |
Al Viro | 1bf0871 | 2006-05-27 01:55:52 -0400 | [diff] [blame] | 697 | rio_memcpy_fromio(p->RIOMemDump, &(PacketP->data[8]), 32); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 698 | } |
| 699 | rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 700 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 702 | case ROUTE_RUP: |
| 703 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
| 704 | FreeMe = RIORouteRup(p, Rup, HostP, PacketP); |
| 705 | rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 706 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 708 | default: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 709 | rio_dprintk(RIO_DEBUG_CMD, "Unknown RUP %d\n", readb(&PacketP->dest_port)); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 710 | FreeMe = 1; |
| 711 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 712 | } |
| 713 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 714 | if (FreeMe) { |
| 715 | rio_dprintk(RIO_DEBUG_CMD, "Free processed incoming command packet\n"); |
| 716 | put_free_end(HostP, PacketP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 717 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 718 | writew(RX_RUP_INACTIVE, &UnixRupP->RupP->rxcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 719 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 720 | if (readw(&UnixRupP->RupP->handshake) == PHB_HANDSHAKE_SET) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 721 | rio_dprintk(RIO_DEBUG_CMD, "Handshake rup %d\n", Rup); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 722 | writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &UnixRupP->RupP->handshake); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 723 | } |
| 724 | } |
| 725 | } |
| 726 | |
| 727 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 728 | ** IF a command was running on the port, |
| 729 | ** and it has completed, then tidy it up. |
| 730 | */ |
| 731 | if ((CmdBlkP = UnixRupP->CmdPendingP) && /* ASSIGN! */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 732 | (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 734 | ** we are idle. |
| 735 | ** there is a command in pending. |
| 736 | ** Therefore, this command has finished. |
| 737 | ** So, wakeup whoever is waiting for it (and tell them |
| 738 | ** what happened). |
| 739 | */ |
| 740 | if (CmdBlkP->Packet.dest_port == BOOT_RUP) |
| 741 | rio_dprintk(RIO_DEBUG_CMD, "Free Boot %s Command Block '%x'\n", CmdBlkP->Packet.len & 0x80 ? "Command" : "Data", CmdBlkP->Packet.data[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 742 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 743 | rio_dprintk(RIO_DEBUG_CMD, "Command %p completed\n", CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | |
| 745 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 746 | ** Clear the Rup lock to prevent mutual exclusion. |
| 747 | */ |
| 748 | if (CmdBlkP->PostFuncP) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 750 | (*CmdBlkP->PostFuncP) (CmdBlkP->PostArg, CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 752 | } |
| 753 | |
| 754 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 755 | ** ....clear the pending flag.... |
| 756 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | UnixRupP->CmdPendingP = NULL; |
| 758 | |
| 759 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 760 | ** ....and return the command block to the freelist. |
| 761 | */ |
| 762 | RIOFreeCmdBlk(CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | } |
| 764 | |
| 765 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 766 | ** If there is a command for this rup, and the rup |
| 767 | ** is idle, then process the command |
| 768 | */ |
| 769 | if ((CmdBlkP = UnixRupP->CmdsWaitingP) && /* ASSIGN! */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 770 | (UnixRupP->CmdPendingP == NULL) && (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 772 | ** if the pre-function is non-zero, call it. |
| 773 | ** If it returns RIO_FAIL then don't |
| 774 | ** send this command yet! |
| 775 | */ |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 776 | if (!(CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP) : 1)) { |
| 777 | rio_dprintk(RIO_DEBUG_CMD, "Not ready to start command %p\n", CmdBlkP); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 778 | } else { |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 779 | rio_dprintk(RIO_DEBUG_CMD, "Start new command %p Cmd byte is 0x%x\n", CmdBlkP, CmdBlkP->Packet.data[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 781 | ** Whammy! blat that pack! |
| 782 | */ |
Al Viro | 92af11c | 2006-05-27 02:24:14 -0400 | [diff] [blame] | 783 | HostP->Copy(&CmdBlkP->Packet, RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->txpkt)), sizeof(struct PKT)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | |
| 785 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 786 | ** remove the command from the rup command queue... |
| 787 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 788 | UnixRupP->CmdsWaitingP = CmdBlkP->NextP; |
| 789 | |
| 790 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 791 | ** ...and place it on the pending position. |
| 792 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | UnixRupP->CmdPendingP = CmdBlkP; |
| 794 | |
| 795 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 796 | ** set the command register |
| 797 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 798 | writew(TX_PACKET_READY, &UnixRupP->RupP->txcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | |
| 800 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 801 | ** the command block will be freed |
| 802 | ** when the command has been processed. |
| 803 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | } |
| 805 | } |
| 806 | spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 807 | } while (Rup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | } |
| 809 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 810 | int RIOWFlushMark(unsigned long iPortP, struct CmdBlk *CmdBlkP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 812 | struct Port *PortP = (struct Port *) iPortP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | unsigned long flags; |
| 814 | |
| 815 | rio_spin_lock_irqsave(&PortP->portSem, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 816 | PortP->WflushFlag++; |
| 817 | PortP->MagicFlags |= MAGIC_FLUSH; |
| 818 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 819 | return RIOUnUse(iPortP, CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | } |
| 821 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 822 | int RIORFlushEnable(unsigned long iPortP, struct CmdBlk *CmdBlkP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 824 | struct Port *PortP = (struct Port *) iPortP; |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 825 | struct PKT __iomem *PacketP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | unsigned long flags; |
| 827 | |
| 828 | rio_spin_lock_irqsave(&PortP->portSem, flags); |
| 829 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 830 | while (can_remove_receive(&PacketP, PortP)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | remove_receive(PortP); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 832 | put_free_end(PortP->HostP, PacketP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | } |
| 834 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 835 | if (readw(&PortP->PhbP->handshake) == PHB_HANDSHAKE_SET) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 837 | ** MAGIC! (Basically, handshake the RX buffer, so that |
| 838 | ** the RTAs upstream can be re-enabled.) |
| 839 | */ |
| 840 | rio_dprintk(RIO_DEBUG_CMD, "Util: Set RX handshake bit\n"); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 841 | writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &PortP->PhbP->handshake); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | } |
| 843 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 844 | return RIOUnUse(iPortP, CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | } |
| 846 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 847 | int RIOUnUse(unsigned long iPortP, struct CmdBlk *CmdBlkP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 849 | struct Port *PortP = (struct Port *) iPortP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | unsigned long flags; |
| 851 | |
| 852 | rio_spin_lock_irqsave(&PortP->portSem, flags); |
| 853 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 854 | rio_dprintk(RIO_DEBUG_CMD, "Decrement in use count for port\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | |
| 856 | if (PortP->InUse) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 857 | if (--PortP->InUse != NOT_INUSE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
| 859 | return 0; |
| 860 | } |
| 861 | } |
| 862 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 863 | ** While PortP->InUse is set (i.e. a preemptive command has been sent to |
| 864 | ** the RTA and is awaiting completion), any transmit data is prevented from |
| 865 | ** being transferred from the write queue into the transmit packets |
| 866 | ** (add_transmit) and no furthur transmit interrupt will be sent for that |
| 867 | ** data. The next interrupt will occur up to 500ms later (RIOIntr is called |
| 868 | ** twice a second as a saftey measure). This was the case when kermit was |
| 869 | ** used to send data into a RIO port. After each packet was sent, TCFLSH |
| 870 | ** was called to flush the read queue preemptively. PortP->InUse was |
| 871 | ** incremented, thereby blocking the 6 byte acknowledgement packet |
| 872 | ** transmitted back. This acknowledgment hung around for 500ms before |
| 873 | ** being sent, thus reducing input performance substantially!. |
| 874 | ** When PortP->InUse becomes NOT_INUSE, we must ensure that any data |
| 875 | ** hanging around in the transmit buffer is sent immediately. |
| 876 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 877 | writew(1, &PortP->HostP->ParmMapP->tx_intr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | /* What to do here .. |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 879 | wakeup( (caddr_t)&(PortP->InUse) ); |
| 880 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
| 882 | return 0; |
| 883 | } |
| 884 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | /* |
| 886 | ** |
| 887 | ** How to use this file: |
| 888 | ** |
| 889 | ** To send a command down a rup, you need to allocate a command block, fill |
| 890 | ** in the packet information, fill in the command number, fill in the pre- |
| 891 | ** and post- functions and arguments, and then add the command block to the |
| 892 | ** queue of command blocks for the port in question. When the port is idle, |
| 893 | ** then the pre-function will be called. If this returns RIO_FAIL then the |
| 894 | ** command will be re-queued and tried again at a later date (probably in one |
| 895 | ** clock tick). If the pre-function returns NOT RIO_FAIL, then the command |
| 896 | ** packet will be queued on the RUP, and the txcontrol field set to the |
| 897 | ** command number. When the txcontrol field has changed from being the |
| 898 | ** command number, then the post-function will be called, with the argument |
| 899 | ** specified earlier, a pointer to the command block, and the value of |
| 900 | ** txcontrol. |
| 901 | ** |
| 902 | ** To allocate a command block, call RIOGetCmdBlk(). This returns a pointer |
| 903 | ** to the command block structure allocated, or NULL if there aren't any. |
| 904 | ** The block will have been zeroed for you. |
| 905 | ** |
| 906 | ** The structure has the following fields: |
| 907 | ** |
| 908 | ** struct CmdBlk |
| 909 | ** { |
| 910 | ** struct CmdBlk *NextP; ** Pointer to next command block ** |
| 911 | ** struct PKT Packet; ** A packet, to copy to the rup ** |
| 912 | ** int (*PreFuncP)(); ** The func to call to check if OK ** |
| 913 | ** int PreArg; ** The arg for the func ** |
| 914 | ** int (*PostFuncP)(); ** The func to call when completed ** |
| 915 | ** int PostArg; ** The arg for the func ** |
| 916 | ** }; |
| 917 | ** |
| 918 | ** You need to fill in ALL fields EXCEPT NextP, which is used to link the |
| 919 | ** blocks together either on the free list or on the Rup list. |
| 920 | ** |
| 921 | ** Packet is an actual packet structure to be filled in with the packet |
| 922 | ** information associated with the command. You need to fill in everything, |
Matt LaPlante | 0779bf2 | 2006-11-30 05:24:39 +0100 | [diff] [blame] | 923 | ** as the command processor doesn't process the command packet in any way. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 924 | ** |
| 925 | ** The PreFuncP is called before the packet is enqueued on the host rup. |
| 926 | ** PreFuncP is called as (*PreFuncP)(PreArg, CmdBlkP);. PreFuncP must |
| 927 | ** return !RIO_FAIL to have the packet queued on the rup, and RIO_FAIL |
| 928 | ** if the packet is NOT to be queued. |
| 929 | ** |
| 930 | ** The PostFuncP is called when the command has completed. It is called |
| 931 | ** as (*PostFuncP)(PostArg, CmdBlkP, txcontrol);. PostFuncP is not expected |
| 932 | ** to return a value. PostFuncP does NOT need to free the command block, |
| 933 | ** as this happens automatically after PostFuncP returns. |
| 934 | ** |
| 935 | ** Once the command block has been filled in, it is attached to the correct |
| 936 | ** queue by calling RIOQueueCmdBlk( HostP, Rup, CmdBlkP ) where HostP is |
| 937 | ** a pointer to the struct Host, Rup is the NUMBER of the rup (NOT a pointer |
| 938 | ** to it!), and CmdBlkP is the pointer to the command block allocated using |
| 939 | ** RIOGetCmdBlk(). |
| 940 | ** |
| 941 | */ |