rp_pci.c revision 119418
1/*- 2 * Copyright (c) Comtrol Corporation <support@comtrol.com> 3 * All rights reserved. 4 * 5 * PCI-specific part separated from: 6 * sys/i386/isa/rp.c,v 1.33 1999/09/28 11:45:27 phk Exp 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted prodived that the follwoing conditions 10 * are met. 11 * 1. Redistributions of source code must retain the above copyright 12 * notive, this list of conditions and the following disclainer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials prodided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Comtrol Corporation. 19 * 4. The name of Comtrol Corporation may not be used to endorse or 20 * promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY COMTROL CORPORATION ``AS IS'' AND ANY 24 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL COMTROL CORPORATION BE LIABLE FOR 27 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36#include <sys/cdefs.h> 37__FBSDID("$FreeBSD: head/sys/dev/rp/rp_pci.c 119418 2003-08-24 17:55:58Z obrien $"); 38 39#include <sys/param.h> 40#include <sys/systm.h> 41#include <sys/fcntl.h> 42#include <sys/malloc.h> 43#include <sys/tty.h> 44#include <sys/conf.h> 45#include <sys/kernel.h> 46#include <machine/resource.h> 47#include <machine/bus.h> 48#include <sys/bus.h> 49#include <sys/rman.h> 50 51#define ROCKET_C 52#include <dev/rp/rpreg.h> 53#include <dev/rp/rpvar.h> 54 55#include <dev/pci/pcireg.h> 56#include <dev/pci/pcivar.h> 57 58/* PCI IDs */ 59#define RP_VENDOR_ID 0x11FE 60#define RP_DEVICE_ID_32I 0x0001 61#define RP_DEVICE_ID_8I 0x0002 62#define RP_DEVICE_ID_16I 0x0003 63#define RP_DEVICE_ID_4Q 0x0004 64#define RP_DEVICE_ID_8O 0x0005 65#define RP_DEVICE_ID_8J 0x0006 66#define RP_DEVICE_ID_4J 0x0007 67#define RP_DEVICE_ID_6M 0x000C 68#define RP_DEVICE_ID_4M 0x000D 69 70/************************************************************************** 71 MUDBAC remapped for PCI 72**************************************************************************/ 73 74#define _CFG_INT_PCI 0x40 75#define _PCI_INT_FUNC 0x3A 76 77#define PCI_STROB 0x2000 78#define INTR_EN_PCI 0x0010 79 80/*************************************************************************** 81Function: sPCIControllerEOI 82Purpose: Strobe the MUDBAC's End Of Interrupt bit. 83Call: sPCIControllerEOI(CtlP) 84 CONTROLLER_T *CtlP; Ptr to controller structure 85*/ 86#define sPCIControllerEOI(CtlP) rp_writeio2(CtlP, 0, _PCI_INT_FUNC, PCI_STROB) 87 88/*************************************************************************** 89Function: sPCIGetControllerIntStatus 90Purpose: Get the controller interrupt status 91Call: sPCIGetControllerIntStatus(CtlP) 92 CONTROLLER_T *CtlP; Ptr to controller structure 93Return: Byte_t: The controller interrupt status in the lower 4 94 bits. Bits 0 through 3 represent AIOP's 0 95 through 3 respectively. If a bit is set that 96 AIOP is interrupting. Bits 4 through 7 will 97 always be cleared. 98*/ 99#define sPCIGetControllerIntStatus(CTLP) ((rp_readio2(CTLP, 0, _PCI_INT_FUNC) >> 8) & 0x1f) 100 101static devclass_t rp_devclass; 102 103static int rp_pciprobe(device_t dev); 104static int rp_pciattach(device_t dev); 105#if notdef 106static int rp_pcidetach(device_t dev); 107static int rp_pcishutdown(device_t dev); 108#endif /* notdef */ 109static void rp_pcireleaseresource(CONTROLLER_t *ctlp); 110static int sPCIInitController( CONTROLLER_t *CtlP, 111 int AiopNum, 112 int IRQNum, 113 Byte_t Frequency, 114 int PeriodicOnly, 115 int VendorDevice); 116static rp_aiop2rid_t rp_pci_aiop2rid; 117static rp_aiop2off_t rp_pci_aiop2off; 118static rp_ctlmask_t rp_pci_ctlmask; 119 120/* 121 * The following functions are the pci-specific part 122 * of rp driver. 123 */ 124 125static int 126rp_pciprobe(device_t dev) 127{ 128 char *s; 129 130 s = NULL; 131 if ((pci_get_devid(dev) & 0xffff) == RP_VENDOR_ID) 132 s = "RocketPort PCI"; 133 134 if (s != NULL) { 135 device_set_desc(dev, s); 136 return (0); 137 } 138 139 return (ENXIO); 140} 141 142static int 143rp_pciattach(device_t dev) 144{ 145 int num_ports, num_aiops; 146 int aiop; 147 CONTROLLER_t *ctlp; 148 int unit; 149 int retval; 150 u_int32_t stcmd; 151 152 ctlp = device_get_softc(dev); 153 bzero(ctlp, sizeof(*ctlp)); 154 ctlp->dev = dev; 155 unit = device_get_unit(dev); 156 ctlp->aiop2rid = rp_pci_aiop2rid; 157 ctlp->aiop2off = rp_pci_aiop2off; 158 ctlp->ctlmask = rp_pci_ctlmask; 159 160 /* Wake up the device. */ 161 stcmd = pci_read_config(dev, PCIR_COMMAND, 4); 162 if ((stcmd & PCIM_CMD_PORTEN) == 0) { 163 stcmd |= (PCIM_CMD_PORTEN); 164 pci_write_config(dev, PCIR_COMMAND, 4, stcmd); 165 } 166 167 /* The IO ports of AIOPs for a PCI controller are continuous. */ 168 ctlp->io_num = 1; 169 ctlp->io_rid = malloc(sizeof(*(ctlp->io_rid)) * ctlp->io_num, M_DEVBUF, M_NOWAIT | M_ZERO); 170 ctlp->io = malloc(sizeof(*(ctlp->io)) * ctlp->io_num, M_DEVBUF, M_NOWAIT | M_ZERO); 171 if (ctlp->io_rid == NULL || ctlp->io == NULL) { 172 device_printf(dev, "rp_pciattach: Out of memory.\n"); 173 retval = ENOMEM; 174 goto nogo; 175 } 176 177 ctlp->bus_ctlp = NULL; 178 179 ctlp->io_rid[0] = 0x10; 180 ctlp->io[0] = bus_alloc_resource(dev, SYS_RES_IOPORT, &ctlp->io_rid[0], 0, ~0, 1, RF_ACTIVE); 181 if(ctlp->io[0] == NULL) { 182 device_printf(dev, "ioaddr mapping failed for RocketPort(PCI).\n"); 183 retval = ENXIO; 184 goto nogo; 185 } 186 187 num_aiops = sPCIInitController(ctlp, 188 MAX_AIOPS_PER_BOARD, 0, 189 FREQ_DIS, 0, (pci_get_devid(dev) >> 16) & 0xffff); 190 191 num_ports = 0; 192 for(aiop=0; aiop < num_aiops; aiop++) { 193 sResetAiopByNum(ctlp, aiop); 194 num_ports += sGetAiopNumChan(ctlp, aiop); 195 } 196 197 retval = rp_attachcommon(ctlp, num_aiops, num_ports); 198 if (retval != 0) 199 goto nogo; 200 201 return (0); 202 203nogo: 204 rp_pcireleaseresource(ctlp); 205 206 return (retval); 207} 208 209#if notdef 210static int 211rp_pcidetach(device_t dev) 212{ 213 CONTROLLER_t *ctlp; 214 215 if (device_get_state(dev) == DS_BUSY) 216 return (EBUSY); 217 218 ctlp = device_get_softc(dev); 219 220 rp_pcireleaseresource(ctlp); 221 222 return (0); 223} 224 225static int 226rp_pcishutdown(device_t dev) 227{ 228 CONTROLLER_t *ctlp; 229 230 if (device_get_state(dev) == DS_BUSY) 231 return (EBUSY); 232 233 ctlp = device_get_softc(dev); 234 235 rp_pcireleaseresource(ctlp); 236 237 return (0); 238} 239#endif /* notdef */ 240 241static void 242rp_pcireleaseresource(CONTROLLER_t *ctlp) 243{ 244 rp_releaseresource(ctlp); 245 246 if (ctlp->io != NULL) { 247 if (ctlp->io[0] != NULL) 248 bus_release_resource(ctlp->dev, SYS_RES_IOPORT, ctlp->io_rid[0], ctlp->io[0]); 249 free(ctlp->io, M_DEVBUF); 250 } 251 if (ctlp->io_rid != NULL) 252 free(ctlp->io_rid, M_DEVBUF); 253} 254 255static int 256sPCIInitController( CONTROLLER_t *CtlP, 257 int AiopNum, 258 int IRQNum, 259 Byte_t Frequency, 260 int PeriodicOnly, 261 int VendorDevice) 262{ 263 int i; 264 265 CtlP->CtlID = CTLID_0001; /* controller release 1 */ 266 267 sPCIControllerEOI(CtlP); 268 269 /* Init AIOPs */ 270 CtlP->NumAiop = 0; 271 for(i=0; i < AiopNum; i++) 272 { 273 /*device_printf(CtlP->dev, "aiop %d.\n", i);*/ 274 CtlP->AiopID[i] = sReadAiopID(CtlP, i); /* read AIOP ID */ 275 /*device_printf(CtlP->dev, "ID = %d.\n", CtlP->AiopID[i]);*/ 276 if(CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ 277 { 278 break; /* done looking for AIOPs */ 279 } 280 281 switch( VendorDevice ) { 282 case RP_DEVICE_ID_4Q: 283 case RP_DEVICE_ID_4J: 284 case RP_DEVICE_ID_4M: 285 CtlP->AiopNumChan[i] = 4; 286 break; 287 case RP_DEVICE_ID_6M: 288 CtlP->AiopNumChan[i] = 6; 289 break; 290 case RP_DEVICE_ID_8O: 291 case RP_DEVICE_ID_8J: 292 case RP_DEVICE_ID_8I: 293 case RP_DEVICE_ID_16I: 294 case RP_DEVICE_ID_32I: 295 CtlP->AiopNumChan[i] = 8; 296 break; 297 default: 298#if notdef 299 CtlP->AiopNumChan[i] = 8; 300#else 301 CtlP->AiopNumChan[i] = sReadAiopNumChan(CtlP, i); 302#endif /* notdef */ 303 break; 304 } 305 /*device_printf(CtlP->dev, "%d channels.\n", CtlP->AiopNumChan[i]);*/ 306 rp_writeaiop2(CtlP, i, _INDX_ADDR,_CLK_PRE); /* clock prescaler */ 307 /*device_printf(CtlP->dev, "configuring clock prescaler.\n");*/ 308 rp_writeaiop1(CtlP, i, _INDX_DATA,CLOCK_PRESC); 309 /*device_printf(CtlP->dev, "configured clock prescaler.\n");*/ 310 CtlP->NumAiop++; /* bump count of AIOPs */ 311 } 312 313 if(CtlP->NumAiop == 0) 314 return(-1); 315 else 316 return(CtlP->NumAiop); 317} 318 319/* 320 * ARGSUSED 321 * Maps (aiop, offset) to rid. 322 */ 323static int 324rp_pci_aiop2rid(int aiop, int offset) 325{ 326 /* Always return zero for a PCI controller. */ 327 return 0; 328} 329 330/* 331 * ARGSUSED 332 * Maps (aiop, offset) to the offset of resource. 333 */ 334static int 335rp_pci_aiop2off(int aiop, int offset) 336{ 337 /* Each AIOP reserves 0x40 bytes. */ 338 return aiop * 0x40 + offset; 339} 340 341/* Read the int status for a PCI controller. */ 342static unsigned char 343rp_pci_ctlmask(CONTROLLER_t *ctlp) 344{ 345 return sPCIGetControllerIntStatus(ctlp); 346} 347 348static device_method_t rp_pcimethods[] = { 349 /* Device interface */ 350 DEVMETHOD(device_probe, rp_pciprobe), 351 DEVMETHOD(device_attach, rp_pciattach), 352#if notdef 353 DEVMETHOD(device_detach, rp_pcidetach), 354 DEVMETHOD(device_shutdown, rp_pcishutdown), 355#endif /* notdef */ 356 357 { 0, 0 } 358}; 359 360static driver_t rp_pcidriver = { 361 "rp", 362 rp_pcimethods, 363 sizeof(CONTROLLER_t), 364}; 365 366/* 367 * rp can be attached to a pci bus. 368 */ 369DRIVER_MODULE(rp, pci, rp_pcidriver, rp_devclass, 0, 0); 370