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 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
| 34 | #include <linux/module.h> |
| 35 | #include <linux/slab.h> |
| 36 | #include <linux/errno.h> |
| 37 | #include <linux/tty.h> |
| 38 | #include <asm/io.h> |
| 39 | #include <asm/system.h> |
| 40 | #include <asm/string.h> |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 41 | #include <asm/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | |
| 43 | #include <linux/termios.h> |
| 44 | #include <linux/serial.h> |
| 45 | |
| 46 | #include <linux/generic_serial.h> |
| 47 | |
| 48 | #include "linux_compat.h" |
| 49 | #include "rio_linux.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 50 | #include "pkt.h" |
| 51 | #include "daemon.h" |
| 52 | #include "rio.h" |
| 53 | #include "riospace.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include "cmdpkt.h" |
| 55 | #include "map.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #include "rup.h" |
| 57 | #include "port.h" |
| 58 | #include "riodrvr.h" |
| 59 | #include "rioinfo.h" |
| 60 | #include "func.h" |
| 61 | #include "errors.h" |
| 62 | #include "pci.h" |
| 63 | |
| 64 | #include "parmmap.h" |
| 65 | #include "unixrup.h" |
| 66 | #include "board.h" |
| 67 | #include "host.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | #include "phb.h" |
| 69 | #include "link.h" |
| 70 | #include "cmdblk.h" |
| 71 | #include "route.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #include "cirrus.h" |
| 73 | |
| 74 | |
| 75 | static struct IdentifyRta IdRta; |
| 76 | static struct KillNeighbour KillUnit; |
| 77 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 78 | int RIOFoadRta(struct Host *HostP, struct Map *MapP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | { |
| 80 | struct CmdBlk *CmdBlkP; |
| 81 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 82 | rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | |
| 84 | CmdBlkP = RIOGetCmdBlk(); |
| 85 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 86 | if (!CmdBlkP) { |
| 87 | rio_dprintk(RIO_DEBUG_CMD, "FOAD RTA: GetCmdBlk failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | return -ENXIO; |
| 89 | } |
| 90 | |
| 91 | CmdBlkP->Packet.dest_unit = MapP->ID; |
| 92 | CmdBlkP->Packet.dest_port = BOOT_RUP; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 93 | CmdBlkP->Packet.src_unit = 0; |
| 94 | CmdBlkP->Packet.src_port = BOOT_RUP; |
| 95 | CmdBlkP->Packet.len = 0x84; |
| 96 | CmdBlkP->Packet.data[0] = IFOAD; |
| 97 | CmdBlkP->Packet.data[1] = 0; |
| 98 | CmdBlkP->Packet.data[2] = IFOAD_MAGIC & 0xFF; |
| 99 | CmdBlkP->Packet.data[3] = (IFOAD_MAGIC >> 8) & 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 100 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 101 | if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { |
| 102 | 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] | 103 | return -EIO; |
| 104 | } |
| 105 | return 0; |
| 106 | } |
| 107 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 108 | int RIOZombieRta(struct Host *HostP, struct Map *MapP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | { |
| 110 | struct CmdBlk *CmdBlkP; |
| 111 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 112 | rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | |
| 114 | CmdBlkP = RIOGetCmdBlk(); |
| 115 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 116 | if (!CmdBlkP) { |
| 117 | rio_dprintk(RIO_DEBUG_CMD, "ZOMBIE RTA: GetCmdBlk failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | return -ENXIO; |
| 119 | } |
| 120 | |
| 121 | CmdBlkP->Packet.dest_unit = MapP->ID; |
| 122 | CmdBlkP->Packet.dest_port = BOOT_RUP; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 123 | CmdBlkP->Packet.src_unit = 0; |
| 124 | CmdBlkP->Packet.src_port = BOOT_RUP; |
| 125 | CmdBlkP->Packet.len = 0x84; |
| 126 | CmdBlkP->Packet.data[0] = ZOMBIE; |
| 127 | CmdBlkP->Packet.data[1] = 0; |
| 128 | CmdBlkP->Packet.data[2] = ZOMBIE_MAGIC & 0xFF; |
| 129 | CmdBlkP->Packet.data[3] = (ZOMBIE_MAGIC >> 8) & 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 131 | if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { |
| 132 | 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] | 133 | return -EIO; |
| 134 | } |
| 135 | return 0; |
| 136 | } |
| 137 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 138 | 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] | 139 | { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 140 | unsigned int Host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 142 | 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] | 143 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 144 | if (!RtaUnique) |
| 145 | return (0); |
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 | for (Host = 0; Host < p->RIONumHosts; Host++) { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 148 | unsigned int Rta; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | struct Host *HostP = &p->RIOHosts[Host]; |
| 150 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 151 | for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | struct Map *MapP = &HostP->Mapping[Rta]; |
| 153 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 154 | if (MapP->RtaUniqueNum == RtaUnique) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | uint Link; |
| 156 | |
| 157 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 158 | ** now, lets just check we have a route to it... |
| 159 | ** IF the routing stuff is working, then one of the |
| 160 | ** topology entries for this unit will have a legit |
| 161 | ** route *somewhere*. We care not where - if its got |
| 162 | ** any connections, we can get to it. |
| 163 | */ |
| 164 | for (Link = 0; Link < LINKS_PER_UNIT; Link++) { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 165 | if (MapP->Topology[Link].Unit <= (u8) MAX_RUP) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 167 | ** Its worth trying the operation... |
| 168 | */ |
| 169 | return (*func) (HostP, MapP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 170 | } |
| 171 | } |
| 172 | } |
| 173 | } |
| 174 | } |
| 175 | return -ENXIO; |
| 176 | } |
| 177 | |
| 178 | |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 179 | int RIOIdentifyRta(struct rio_info *p, void __user * arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 181 | unsigned int Host; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 183 | if (copy_from_user(&IdRta, arg, sizeof(IdRta))) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 184 | rio_dprintk(RIO_DEBUG_CMD, "RIO_IDENTIFY_RTA copy failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | p->RIOError.Error = COPYIN_FAILED; |
| 186 | return -EFAULT; |
| 187 | } |
| 188 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 189 | for (Host = 0; Host < p->RIONumHosts; Host++) { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 190 | unsigned int Rta; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 191 | struct Host *HostP = &p->RIOHosts[Host]; |
| 192 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 193 | for (Rta = 0; Rta < RTAS_PER_HOST; Rta++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | struct Map *MapP = &HostP->Mapping[Rta]; |
| 195 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 196 | if (MapP->RtaUniqueNum == IdRta.RtaUnique) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | uint Link; |
| 198 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 199 | ** now, lets just check we have a route to it... |
| 200 | ** IF the routing stuff is working, then one of the |
| 201 | ** topology entries for this unit will have a legit |
| 202 | ** route *somewhere*. We care not where - if its got |
| 203 | ** any connections, we can get to it. |
| 204 | */ |
| 205 | for (Link = 0; Link < LINKS_PER_UNIT; Link++) { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 206 | if (MapP->Topology[Link].Unit <= (u8) MAX_RUP) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 208 | ** Its worth trying the operation... |
| 209 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | struct CmdBlk *CmdBlkP; |
| 211 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 212 | rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | |
| 214 | CmdBlkP = RIOGetCmdBlk(); |
| 215 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 216 | if (!CmdBlkP) { |
| 217 | rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: GetCmdBlk failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | return -ENXIO; |
| 219 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | CmdBlkP->Packet.dest_unit = MapP->ID; |
| 222 | CmdBlkP->Packet.dest_port = BOOT_RUP; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 223 | CmdBlkP->Packet.src_unit = 0; |
| 224 | CmdBlkP->Packet.src_port = BOOT_RUP; |
| 225 | CmdBlkP->Packet.len = 0x84; |
| 226 | CmdBlkP->Packet.data[0] = IDENTIFY; |
| 227 | CmdBlkP->Packet.data[1] = 0; |
| 228 | CmdBlkP->Packet.data[2] = IdRta.ID; |
| 229 | |
| 230 | if (RIOQueueCmdBlk(HostP, MapP->ID - 1, CmdBlkP) == RIO_FAIL) { |
| 231 | rio_dprintk(RIO_DEBUG_CMD, "IDENTIFY RTA: Failed to queue command\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | return -EIO; |
| 233 | } |
| 234 | return 0; |
| 235 | } |
| 236 | } |
| 237 | } |
| 238 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 239 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | return -ENOENT; |
| 241 | } |
| 242 | |
| 243 | |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 244 | int RIOKillNeighbour(struct rio_info *p, void __user * arg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | { |
| 246 | uint Host; |
| 247 | uint ID; |
| 248 | struct Host *HostP; |
| 249 | struct CmdBlk *CmdBlkP; |
| 250 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 251 | rio_dprintk(RIO_DEBUG_CMD, "KILL HOST NEIGHBOUR\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 253 | if (copy_from_user(&KillUnit, arg, sizeof(KillUnit))) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 254 | rio_dprintk(RIO_DEBUG_CMD, "RIO_KILL_NEIGHBOUR copy failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | p->RIOError.Error = COPYIN_FAILED; |
| 256 | return -EFAULT; |
| 257 | } |
| 258 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 259 | if (KillUnit.Link > 3) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | return -ENXIO; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 261 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | CmdBlkP = RIOGetCmdBlk(); |
| 263 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 264 | if (!CmdBlkP) { |
| 265 | rio_dprintk(RIO_DEBUG_CMD, "UFOAD: GetCmdBlk failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | return -ENXIO; |
| 267 | } |
| 268 | |
| 269 | CmdBlkP->Packet.dest_unit = 0; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 270 | CmdBlkP->Packet.src_unit = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | CmdBlkP->Packet.dest_port = BOOT_RUP; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 272 | CmdBlkP->Packet.src_port = BOOT_RUP; |
| 273 | CmdBlkP->Packet.len = 0x84; |
| 274 | CmdBlkP->Packet.data[0] = UFOAD; |
| 275 | CmdBlkP->Packet.data[1] = KillUnit.Link; |
| 276 | CmdBlkP->Packet.data[2] = UFOAD_MAGIC & 0xFF; |
| 277 | CmdBlkP->Packet.data[3] = (UFOAD_MAGIC >> 8) & 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 279 | for (Host = 0; Host < p->RIONumHosts; Host++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | ID = 0; |
| 281 | HostP = &p->RIOHosts[Host]; |
| 282 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 283 | if (HostP->UniqueNum == KillUnit.UniqueNum) { |
| 284 | if (RIOQueueCmdBlk(HostP, RTAS_PER_HOST + KillUnit.Link, CmdBlkP) == RIO_FAIL) { |
| 285 | rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | return -EIO; |
| 287 | } |
| 288 | return 0; |
| 289 | } |
| 290 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 291 | for (ID = 0; ID < RTAS_PER_HOST; ID++) { |
| 292 | if (HostP->Mapping[ID].RtaUniqueNum == KillUnit.UniqueNum) { |
| 293 | CmdBlkP->Packet.dest_unit = ID + 1; |
| 294 | if (RIOQueueCmdBlk(HostP, ID, CmdBlkP) == RIO_FAIL) { |
| 295 | rio_dprintk(RIO_DEBUG_CMD, "UFOAD: Failed queue command\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | return -EIO; |
| 297 | } |
| 298 | return 0; |
| 299 | } |
| 300 | } |
| 301 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 302 | RIOFreeCmdBlk(CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | return -ENXIO; |
| 304 | } |
| 305 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 306 | int RIOSuspendBootRta(struct Host *HostP, int ID, int Link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | { |
| 308 | struct CmdBlk *CmdBlkP; |
| 309 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 310 | 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] | 311 | |
| 312 | CmdBlkP = RIOGetCmdBlk(); |
| 313 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 314 | if (!CmdBlkP) { |
| 315 | rio_dprintk(RIO_DEBUG_CMD, "SUSPEND BOOT ON RTA: GetCmdBlk failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | return -ENXIO; |
| 317 | } |
| 318 | |
| 319 | CmdBlkP->Packet.dest_unit = ID; |
| 320 | CmdBlkP->Packet.dest_port = BOOT_RUP; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 321 | CmdBlkP->Packet.src_unit = 0; |
| 322 | CmdBlkP->Packet.src_port = BOOT_RUP; |
| 323 | CmdBlkP->Packet.len = 0x84; |
| 324 | CmdBlkP->Packet.data[0] = IWAIT; |
| 325 | CmdBlkP->Packet.data[1] = Link; |
| 326 | CmdBlkP->Packet.data[2] = IWAIT_MAGIC & 0xFF; |
| 327 | CmdBlkP->Packet.data[3] = (IWAIT_MAGIC >> 8) & 0xFF; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 329 | if (RIOQueueCmdBlk(HostP, ID - 1, CmdBlkP) == RIO_FAIL) { |
| 330 | 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] | 331 | return -EIO; |
| 332 | } |
| 333 | return 0; |
| 334 | } |
| 335 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 336 | int RIOFoadWakeup(struct rio_info *p) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 337 | { |
| 338 | int port; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 339 | struct Port *PortP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | unsigned long flags; |
| 341 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 342 | for (port = 0; port < RIO_PORTS; port++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | PortP = p->RIOPortp[port]; |
| 344 | |
| 345 | rio_spin_lock_irqsave(&PortP->portSem, flags); |
| 346 | PortP->Config = 0; |
| 347 | PortP->State = 0; |
| 348 | PortP->InUse = NOT_INUSE; |
| 349 | PortP->PortState = 0; |
| 350 | PortP->FlushCmdBodge = 0; |
| 351 | PortP->ModemLines = 0; |
| 352 | PortP->ModemState = 0; |
| 353 | PortP->CookMode = 0; |
| 354 | PortP->ParamSem = 0; |
| 355 | PortP->Mapped = 0; |
| 356 | PortP->WflushFlag = 0; |
| 357 | PortP->MagicFlags = 0; |
| 358 | PortP->RxDataStart = 0; |
| 359 | PortP->TxBufferIn = 0; |
| 360 | PortP->TxBufferOut = 0; |
| 361 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
| 362 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 363 | return (0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | } |
| 365 | |
| 366 | /* |
| 367 | ** Incoming command on the COMMAND_RUP to be processed. |
| 368 | */ |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 369 | 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] | 370 | { |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 371 | struct PktCmd __iomem *PktCmdP = (struct PktCmd __iomem *)PacketP->data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | struct Port *PortP; |
| 373 | struct UnixRup *UnixRupP; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 374 | unsigned short SysPort; |
| 375 | unsigned short ReportedModemStatus; |
| 376 | unsigned short rup; |
| 377 | unsigned short subCommand; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 378 | unsigned long flags; |
| 379 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 380 | func_enter(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 383 | ** 16 port RTA note: |
| 384 | ** Command rup packets coming from the RTA will have pkt->data[1] (which |
| 385 | ** translates to PktCmdP->PhbNum) set to the host port number for the |
| 386 | ** particular unit. To access the correct BaseSysPort for a 16 port RTA, |
| 387 | ** we can use PhbNum to get the rup number for the appropriate 8 port |
| 388 | ** block (for the first block, this should be equal to 'Rup'). |
| 389 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 390 | rup = readb(&PktCmdP->PhbNum) / (unsigned short) PORTS_PER_RTA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | UnixRupP = &HostP->UnixRups[rup]; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 392 | SysPort = UnixRupP->BaseSysPort + (readb(&PktCmdP->PhbNum) % (unsigned short) PORTS_PER_RTA); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 393 | 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] | 394 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 395 | if (UnixRupP->BaseSysPort == NO_PORT) { |
| 396 | rio_dprintk(RIO_DEBUG_CMD, "OBSCURE ERROR!\n"); |
| 397 | 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] | 398 | 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] | 399 | 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] | 400 | |
Eric Sesterhenn / Snakebyte | 84ea776 | 2007-05-10 22:22:48 -0700 | [diff] [blame] | 401 | if (Rup < (unsigned short) MAX_RUP) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 402 | 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] | 403 | } else |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 404 | 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] | 405 | |
Al Viro | 92af11c | 2006-05-27 02:24:14 -0400 | [diff] [blame] | 406 | rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Destination 0x%x:0x%x\n", readb(&PacketP->dest_unit), readb(&PacketP->dest_port)); |
| 407 | rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Source 0x%x:0x%x\n", readb(&PacketP->src_unit), readb(&PacketP->src_port)); |
| 408 | rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Length 0x%x (%d)\n", readb(&PacketP->len), readb(&PacketP->len)); |
| 409 | rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Control 0x%x (%d)\n", readb(&PacketP->control), readb(&PacketP->control)); |
| 410 | rio_dprintk(RIO_DEBUG_CMD, "PACKET information: Check 0x%x (%d)\n", readw(&PacketP->csum), readw(&PacketP->csum)); |
| 411 | 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] | 412 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 414 | PortP = p->RIOPortp[SysPort]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | rio_spin_lock_irqsave(&PortP->portSem, flags); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 416 | switch (readb(&PktCmdP->Command)) { |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 417 | case RIOC_BREAK_RECEIVED: |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 418 | rio_dprintk(RIO_DEBUG_CMD, "Received a break!\n"); |
| 419 | /* If the current line disc. is not multi-threading and |
| 420 | the current processor is not the default, reset rup_intr |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 421 | and return 0 to ensure that the command packet is |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 422 | not freed. */ |
| 423 | /* Call tmgr HANGUP HERE */ |
| 424 | /* Fix this later when every thing works !!!! RAMRAJ */ |
| 425 | gs_got_break(&PortP->gs); |
| 426 | break; |
| 427 | |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 428 | case RIOC_COMPLETE: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 429 | 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] | 430 | subCommand = 1; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 431 | switch (readb(&PktCmdP->SubCommand)) { |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 432 | case RIOC_MEMDUMP: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 433 | 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] | 434 | break; |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 435 | case RIOC_READ_REGISTER: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 436 | 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] | 437 | p->CdRegister = (readb(&PktCmdP->ModemStatus) & RIOC_MSVR1_HOST); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 438 | break; |
| 439 | default: |
| 440 | subCommand = 0; |
| 441 | break; |
| 442 | } |
| 443 | if (subCommand) |
| 444 | break; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 445 | rio_dprintk(RIO_DEBUG_CMD, "New status is 0x%x was 0x%x\n", readb(&PktCmdP->PortStatus), PortP->PortState); |
| 446 | if (PortP->PortState != readb(&PktCmdP->PortStatus)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 447 | rio_dprintk(RIO_DEBUG_CMD, "Mark status & wakeup\n"); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 448 | PortP->PortState = readb(&PktCmdP->PortStatus); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 449 | /* What should we do here ... |
| 450 | wakeup( &PortP->PortState ); |
| 451 | */ |
| 452 | } else |
| 453 | rio_dprintk(RIO_DEBUG_CMD, "No change\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 455 | /* FALLTHROUGH */ |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 456 | case RIOC_MODEM_STATUS: |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 457 | /* |
| 458 | ** Knock out the tbusy and tstop bits, as these are not relevant |
| 459 | ** to the check for modem status change (they're just there because |
| 460 | ** it's a convenient place to put them!). |
| 461 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 462 | ReportedModemStatus = readb(&PktCmdP->ModemStatus); |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 463 | if ((PortP->ModemState & RIOC_MSVR1_HOST) == |
| 464 | (ReportedModemStatus & RIOC_MSVR1_HOST)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 465 | 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] | 466 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 467 | ** Update ModemState just in case tbusy or tstop states have |
| 468 | ** changed. |
| 469 | */ |
| 470 | PortP->ModemState = ReportedModemStatus; |
| 471 | } else { |
| 472 | rio_dprintk(RIO_DEBUG_CMD, "Modem status change from 0x%x to 0x%x\n", PortP->ModemState, ReportedModemStatus); |
| 473 | PortP->ModemState = ReportedModemStatus; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | #ifdef MODEM_SUPPORT |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 475 | if (PortP->Mapped) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | /***********************************************************\ |
| 477 | ************************************************************* |
| 478 | *** *** |
| 479 | *** M O D E M S T A T E C H A N G E *** |
| 480 | *** *** |
| 481 | ************************************************************* |
| 482 | \***********************************************************/ |
| 483 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 484 | ** If the device is a modem, then check the modem |
| 485 | ** carrier. |
| 486 | */ |
Alan Cox | b5391e2 | 2008-07-16 21:55:20 +0100 | [diff] [blame] | 487 | if (PortP->gs.port.tty == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 488 | break; |
Alan Cox | b5391e2 | 2008-07-16 21:55:20 +0100 | [diff] [blame] | 489 | if (PortP->gs.port.tty->termios == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | |
Alan Cox | b5391e2 | 2008-07-16 21:55:20 +0100 | [diff] [blame] | 492 | if (!(PortP->gs.port.tty->termios->c_cflag & CLOCAL) && ((PortP->State & (RIO_MOPEN | RIO_WOPEN)))) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 493 | |
| 494 | rio_dprintk(RIO_DEBUG_CMD, "Is there a Carrier?\n"); |
| 495 | /* |
| 496 | ** Is there a carrier? |
| 497 | */ |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 498 | if (PortP->ModemState & RIOC_MSVR1_CD) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 499 | /* |
| 500 | ** Has carrier just appeared? |
| 501 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | if (!(PortP->State & RIO_CARR_ON)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 503 | rio_dprintk(RIO_DEBUG_CMD, "Carrier just came up.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | PortP->State |= RIO_CARR_ON; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 505 | /* |
| 506 | ** wakeup anyone in WOPEN |
| 507 | */ |
| 508 | if (PortP->State & (PORT_ISOPEN | RIO_WOPEN)) |
Alan Cox | b5391e2 | 2008-07-16 21:55:20 +0100 | [diff] [blame] | 509 | wake_up_interruptible(&PortP->gs.port.open_wait); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 510 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | } else { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 512 | /* |
| 513 | ** Has carrier just dropped? |
| 514 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 515 | if (PortP->State & RIO_CARR_ON) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 516 | if (PortP->State & (PORT_ISOPEN | RIO_WOPEN | RIO_MOPEN)) |
Alan Cox | b5391e2 | 2008-07-16 21:55:20 +0100 | [diff] [blame] | 517 | tty_hangup(PortP->gs.port.tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 518 | PortP->State &= ~RIO_CARR_ON; |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 519 | rio_dprintk(RIO_DEBUG_CMD, "Carrirer just went down\n"); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 520 | } |
| 521 | } |
| 522 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | #endif |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 525 | } |
| 526 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 527 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 528 | default: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 529 | 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] | 530 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | } |
| 532 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
| 533 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 534 | func_exit(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 536 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 538 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | /* |
| 540 | ** The command mechanism: |
| 541 | ** Each rup has a chain of commands associated with it. |
| 542 | ** This chain is maintained by routines in this file. |
| 543 | ** Periodically we are called and we run a quick check of all the |
| 544 | ** active chains to determine if there is a command to be executed, |
| 545 | ** and if the rup is ready to accept it. |
| 546 | ** |
| 547 | */ |
| 548 | |
| 549 | /* |
| 550 | ** Allocate an empty command block. |
| 551 | */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 552 | struct CmdBlk *RIOGetCmdBlk(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | { |
| 554 | struct CmdBlk *CmdBlkP; |
| 555 | |
Yoann Padioleau | dd00cc4 | 2007-07-19 01:49:03 -0700 | [diff] [blame] | 556 | CmdBlkP = kzalloc(sizeof(struct CmdBlk), GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 557 | return CmdBlkP; |
| 558 | } |
| 559 | |
| 560 | /* |
| 561 | ** Return a block to the head of the free list. |
| 562 | */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 563 | void RIOFreeCmdBlk(struct CmdBlk *CmdBlkP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 564 | { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 565 | kfree(CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | } |
| 567 | |
| 568 | /* |
| 569 | ** attach a command block to the list of commands to be performed for |
| 570 | ** a given rup. |
| 571 | */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 572 | int RIOQueueCmdBlk(struct Host *HostP, uint Rup, struct CmdBlk *CmdBlkP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | { |
| 574 | struct CmdBlk **Base; |
| 575 | struct UnixRup *UnixRupP; |
| 576 | unsigned long flags; |
| 577 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 578 | if (Rup >= (unsigned short) (MAX_RUP + LINKS_PER_UNIT)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 579 | rio_dprintk(RIO_DEBUG_CMD, "Illegal rup number %d in RIOQueueCmdBlk\n", Rup); |
| 580 | RIOFreeCmdBlk(CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | return RIO_FAIL; |
| 582 | } |
| 583 | |
| 584 | UnixRupP = &HostP->UnixRups[Rup]; |
| 585 | |
| 586 | rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 587 | |
| 588 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 589 | ** If the RUP is currently inactive, then put the request |
| 590 | ** straight on the RUP.... |
| 591 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 592 | 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] | 593 | : 1)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 594 | 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] | 595 | |
| 596 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 597 | ** Whammy! blat that pack! |
| 598 | */ |
Al Viro | 92af11c | 2006-05-27 02:24:14 -0400 | [diff] [blame] | 599 | 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] | 600 | |
| 601 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 602 | ** place command packet on the pending position. |
| 603 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | UnixRupP->CmdPendingP = CmdBlkP; |
| 605 | |
| 606 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 607 | ** set the command register |
| 608 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 609 | writew(TX_PACKET_READY, &UnixRupP->RupP->txcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 610 | |
| 611 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
| 612 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 613 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | } |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 615 | rio_dprintk(RIO_DEBUG_CMD, "RUP active - en-queing\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 617 | if (UnixRupP->CmdsWaitingP != NULL) |
| 618 | rio_dprintk(RIO_DEBUG_CMD, "Rup active - command waiting\n"); |
| 619 | if (UnixRupP->CmdPendingP != NULL) |
| 620 | rio_dprintk(RIO_DEBUG_CMD, "Rup active - command pending\n"); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 621 | if (readw(&UnixRupP->RupP->txcontrol) != TX_RUP_INACTIVE) |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 622 | rio_dprintk(RIO_DEBUG_CMD, "Rup active - command rup not ready\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 623 | |
| 624 | Base = &UnixRupP->CmdsWaitingP; |
| 625 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 626 | 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] | 627 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 628 | while (*Base) { |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 629 | rio_dprintk(RIO_DEBUG_CMD, "Command cmdblk %p here\n", *Base); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | Base = &((*Base)->NextP); |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 631 | 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] | 632 | } |
| 633 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 634 | 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] | 635 | |
| 636 | *Base = CmdBlkP; |
| 637 | |
| 638 | CmdBlkP->NextP = NULL; |
| 639 | |
| 640 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
| 641 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 642 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | } |
| 644 | |
| 645 | /* |
| 646 | ** Here we go - if there is an empty rup, fill it! |
| 647 | ** must be called at splrio() or higher. |
| 648 | */ |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 649 | void RIOPollHostCommands(struct rio_info *p, struct Host *HostP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | { |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 651 | struct CmdBlk *CmdBlkP; |
| 652 | struct UnixRup *UnixRupP; |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 653 | struct PKT __iomem *PacketP; |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 654 | unsigned short Rup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | unsigned long flags; |
| 656 | |
| 657 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 658 | Rup = MAX_RUP + LINKS_PER_UNIT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 660 | do { /* do this loop for each RUP */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 662 | ** locate the rup we are processing & lock it |
| 663 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | UnixRupP = &HostP->UnixRups[--Rup]; |
| 665 | |
| 666 | spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 667 | |
| 668 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 669 | ** First check for incoming commands: |
| 670 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 671 | if (readw(&UnixRupP->RupP->rxcontrol) != RX_RUP_INACTIVE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 672 | int FreeMe; |
| 673 | |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 674 | PacketP = (struct PKT __iomem *) RIO_PTR(HostP->Caddr, readw(&UnixRupP->RupP->rxpkt)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 676 | switch (readb(&PacketP->dest_port)) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 677 | case BOOT_RUP: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 678 | 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] | 679 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
| 680 | FreeMe = RIOBootRup(p, Rup, HostP, PacketP); |
| 681 | rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 682 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 684 | case COMMAND_RUP: |
| 685 | /* |
| 686 | ** Free the RUP lock as loss of carrier causes a |
| 687 | ** ttyflush which will (eventually) call another |
| 688 | ** routine that uses the RUP lock. |
| 689 | */ |
| 690 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
| 691 | FreeMe = RIOCommandRup(p, Rup, HostP, PacketP); |
Jiri Slaby | d6f6341 | 2008-04-30 00:53:57 -0700 | [diff] [blame] | 692 | if (readb(&PacketP->data[5]) == RIOC_MEMDUMP) { |
Al Viro | 92af11c | 2006-05-27 02:24:14 -0400 | [diff] [blame] | 693 | 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] | 694 | rio_memcpy_fromio(p->RIOMemDump, &(PacketP->data[8]), 32); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 695 | } |
| 696 | rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 697 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 699 | case ROUTE_RUP: |
| 700 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
| 701 | FreeMe = RIORouteRup(p, Rup, HostP, PacketP); |
| 702 | rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 703 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 704 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 705 | default: |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 706 | 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] | 707 | FreeMe = 1; |
| 708 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | } |
| 710 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 711 | if (FreeMe) { |
| 712 | rio_dprintk(RIO_DEBUG_CMD, "Free processed incoming command packet\n"); |
| 713 | put_free_end(HostP, PacketP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 715 | writew(RX_RUP_INACTIVE, &UnixRupP->RupP->rxcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 716 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 717 | if (readw(&UnixRupP->RupP->handshake) == PHB_HANDSHAKE_SET) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 718 | rio_dprintk(RIO_DEBUG_CMD, "Handshake rup %d\n", Rup); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 719 | writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &UnixRupP->RupP->handshake); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | } |
| 721 | } |
| 722 | } |
| 723 | |
| 724 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 725 | ** IF a command was running on the port, |
| 726 | ** and it has completed, then tidy it up. |
| 727 | */ |
| 728 | if ((CmdBlkP = UnixRupP->CmdPendingP) && /* ASSIGN! */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 729 | (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 730 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 731 | ** we are idle. |
| 732 | ** there is a command in pending. |
| 733 | ** Therefore, this command has finished. |
| 734 | ** So, wakeup whoever is waiting for it (and tell them |
| 735 | ** what happened). |
| 736 | */ |
| 737 | if (CmdBlkP->Packet.dest_port == BOOT_RUP) |
| 738 | 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] | 739 | |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 740 | rio_dprintk(RIO_DEBUG_CMD, "Command %p completed\n", CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | |
| 742 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 743 | ** Clear the Rup lock to prevent mutual exclusion. |
| 744 | */ |
| 745 | if (CmdBlkP->PostFuncP) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 746 | rio_spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 747 | (*CmdBlkP->PostFuncP) (CmdBlkP->PostArg, CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | rio_spin_lock_irqsave(&UnixRupP->RupLock, flags); |
| 749 | } |
| 750 | |
| 751 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 752 | ** ....clear the pending flag.... |
| 753 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 754 | UnixRupP->CmdPendingP = NULL; |
| 755 | |
| 756 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 757 | ** ....and return the command block to the freelist. |
| 758 | */ |
| 759 | RIOFreeCmdBlk(CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 763 | ** If there is a command for this rup, and the rup |
| 764 | ** is idle, then process the command |
| 765 | */ |
| 766 | if ((CmdBlkP = UnixRupP->CmdsWaitingP) && /* ASSIGN! */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 767 | (UnixRupP->CmdPendingP == NULL) && (readw(&UnixRupP->RupP->txcontrol) == TX_RUP_INACTIVE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 769 | ** if the pre-function is non-zero, call it. |
| 770 | ** If it returns RIO_FAIL then don't |
| 771 | ** send this command yet! |
| 772 | */ |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 773 | if (!(CmdBlkP->PreFuncP ? (*CmdBlkP->PreFuncP) (CmdBlkP->PreArg, CmdBlkP) : 1)) { |
| 774 | 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] | 775 | } else { |
Alan Cox | 554b7c8 | 2006-03-24 03:18:32 -0800 | [diff] [blame] | 776 | 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] | 777 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 778 | ** Whammy! blat that pack! |
| 779 | */ |
Al Viro | 92af11c | 2006-05-27 02:24:14 -0400 | [diff] [blame] | 780 | 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] | 781 | |
| 782 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 783 | ** remove the command from the rup command queue... |
| 784 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 785 | UnixRupP->CmdsWaitingP = CmdBlkP->NextP; |
| 786 | |
| 787 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 788 | ** ...and place it on the pending position. |
| 789 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | UnixRupP->CmdPendingP = CmdBlkP; |
| 791 | |
| 792 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 793 | ** set the command register |
| 794 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 795 | writew(TX_PACKET_READY, &UnixRupP->RupP->txcontrol); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | |
| 797 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 798 | ** the command block will be freed |
| 799 | ** when the command has been processed. |
| 800 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 801 | } |
| 802 | } |
| 803 | spin_unlock_irqrestore(&UnixRupP->RupLock, flags); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 804 | } while (Rup); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | } |
| 806 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 807 | int RIOWFlushMark(unsigned long iPortP, struct CmdBlk *CmdBlkP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 809 | struct Port *PortP = (struct Port *) iPortP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | unsigned long flags; |
| 811 | |
| 812 | rio_spin_lock_irqsave(&PortP->portSem, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | PortP->WflushFlag++; |
| 814 | PortP->MagicFlags |= MAGIC_FLUSH; |
| 815 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 816 | return RIOUnUse(iPortP, CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | } |
| 818 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 819 | int RIORFlushEnable(unsigned long iPortP, struct CmdBlk *CmdBlkP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 821 | struct Port *PortP = (struct Port *) iPortP; |
Al Viro | d886cb5 | 2006-05-27 00:08:25 -0400 | [diff] [blame] | 822 | struct PKT __iomem *PacketP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 823 | unsigned long flags; |
| 824 | |
| 825 | rio_spin_lock_irqsave(&PortP->portSem, flags); |
| 826 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 827 | while (can_remove_receive(&PacketP, PortP)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | remove_receive(PortP); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 829 | put_free_end(PortP->HostP, PacketP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 830 | } |
| 831 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 832 | if (readw(&PortP->PhbP->handshake) == PHB_HANDSHAKE_SET) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 834 | ** MAGIC! (Basically, handshake the RX buffer, so that |
| 835 | ** the RTAs upstream can be re-enabled.) |
| 836 | */ |
| 837 | rio_dprintk(RIO_DEBUG_CMD, "Util: Set RX handshake bit\n"); |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 838 | writew(PHB_HANDSHAKE_SET | PHB_HANDSHAKE_RESET, &PortP->PhbP->handshake); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | } |
| 840 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 841 | return RIOUnUse(iPortP, CmdBlkP); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | } |
| 843 | |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 844 | int RIOUnUse(unsigned long iPortP, struct CmdBlk *CmdBlkP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 846 | struct Port *PortP = (struct Port *) iPortP; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | unsigned long flags; |
| 848 | |
| 849 | rio_spin_lock_irqsave(&PortP->portSem, flags); |
| 850 | |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 851 | rio_dprintk(RIO_DEBUG_CMD, "Decrement in use count for port\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | |
| 853 | if (PortP->InUse) { |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 854 | if (--PortP->InUse != NOT_INUSE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 855 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
| 856 | return 0; |
| 857 | } |
| 858 | } |
| 859 | /* |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 860 | ** While PortP->InUse is set (i.e. a preemptive command has been sent to |
| 861 | ** the RTA and is awaiting completion), any transmit data is prevented from |
| 862 | ** being transferred from the write queue into the transmit packets |
| 863 | ** (add_transmit) and no furthur transmit interrupt will be sent for that |
| 864 | ** data. The next interrupt will occur up to 500ms later (RIOIntr is called |
| 865 | ** twice a second as a saftey measure). This was the case when kermit was |
| 866 | ** used to send data into a RIO port. After each packet was sent, TCFLSH |
| 867 | ** was called to flush the read queue preemptively. PortP->InUse was |
| 868 | ** incremented, thereby blocking the 6 byte acknowledgement packet |
| 869 | ** transmitted back. This acknowledgment hung around for 500ms before |
| 870 | ** being sent, thus reducing input performance substantially!. |
| 871 | ** When PortP->InUse becomes NOT_INUSE, we must ensure that any data |
| 872 | ** hanging around in the transmit buffer is sent immediately. |
| 873 | */ |
Alan Cox | 00d83a5 | 2006-03-24 03:18:28 -0800 | [diff] [blame] | 874 | writew(1, &PortP->HostP->ParmMapP->tx_intr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | /* What to do here .. |
Andrew Morton | 8d8706e | 2006-01-11 12:17:49 -0800 | [diff] [blame] | 876 | wakeup( (caddr_t)&(PortP->InUse) ); |
| 877 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | rio_spin_unlock_irqrestore(&PortP->portSem, flags); |
| 879 | return 0; |
| 880 | } |
| 881 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 882 | /* |
| 883 | ** |
| 884 | ** How to use this file: |
| 885 | ** |
| 886 | ** To send a command down a rup, you need to allocate a command block, fill |
| 887 | ** in the packet information, fill in the command number, fill in the pre- |
| 888 | ** and post- functions and arguments, and then add the command block to the |
| 889 | ** queue of command blocks for the port in question. When the port is idle, |
| 890 | ** then the pre-function will be called. If this returns RIO_FAIL then the |
| 891 | ** command will be re-queued and tried again at a later date (probably in one |
| 892 | ** clock tick). If the pre-function returns NOT RIO_FAIL, then the command |
| 893 | ** packet will be queued on the RUP, and the txcontrol field set to the |
| 894 | ** command number. When the txcontrol field has changed from being the |
| 895 | ** command number, then the post-function will be called, with the argument |
| 896 | ** specified earlier, a pointer to the command block, and the value of |
| 897 | ** txcontrol. |
| 898 | ** |
| 899 | ** To allocate a command block, call RIOGetCmdBlk(). This returns a pointer |
| 900 | ** to the command block structure allocated, or NULL if there aren't any. |
| 901 | ** The block will have been zeroed for you. |
| 902 | ** |
| 903 | ** The structure has the following fields: |
| 904 | ** |
| 905 | ** struct CmdBlk |
| 906 | ** { |
| 907 | ** struct CmdBlk *NextP; ** Pointer to next command block ** |
| 908 | ** struct PKT Packet; ** A packet, to copy to the rup ** |
| 909 | ** int (*PreFuncP)(); ** The func to call to check if OK ** |
| 910 | ** int PreArg; ** The arg for the func ** |
| 911 | ** int (*PostFuncP)(); ** The func to call when completed ** |
| 912 | ** int PostArg; ** The arg for the func ** |
| 913 | ** }; |
| 914 | ** |
| 915 | ** You need to fill in ALL fields EXCEPT NextP, which is used to link the |
| 916 | ** blocks together either on the free list or on the Rup list. |
| 917 | ** |
| 918 | ** Packet is an actual packet structure to be filled in with the packet |
| 919 | ** information associated with the command. You need to fill in everything, |
Matt LaPlante | 0779bf2 | 2006-11-30 05:24:39 +0100 | [diff] [blame] | 920 | ** 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] | 921 | ** |
| 922 | ** The PreFuncP is called before the packet is enqueued on the host rup. |
| 923 | ** PreFuncP is called as (*PreFuncP)(PreArg, CmdBlkP);. PreFuncP must |
| 924 | ** return !RIO_FAIL to have the packet queued on the rup, and RIO_FAIL |
| 925 | ** if the packet is NOT to be queued. |
| 926 | ** |
| 927 | ** The PostFuncP is called when the command has completed. It is called |
| 928 | ** as (*PostFuncP)(PostArg, CmdBlkP, txcontrol);. PostFuncP is not expected |
| 929 | ** to return a value. PostFuncP does NOT need to free the command block, |
| 930 | ** as this happens automatically after PostFuncP returns. |
| 931 | ** |
| 932 | ** Once the command block has been filled in, it is attached to the correct |
| 933 | ** queue by calling RIOQueueCmdBlk( HostP, Rup, CmdBlkP ) where HostP is |
| 934 | ** a pointer to the struct Host, Rup is the NUMBER of the rup (NOT a pointer |
| 935 | ** to it!), and CmdBlkP is the pointer to the command block allocated using |
| 936 | ** RIOGetCmdBlk(). |
| 937 | ** |
| 938 | */ |