rp_pci.c revision 67882
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 * $FreeBSD: head/sys/dev/rp/rp_pci.c 67882 2000-10-29 13:57:19Z phk $ 36 */ 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/fcntl.h> 41#include <sys/malloc.h> 42#include <sys/tty.h> 43#include <sys/conf.h> 44#include <sys/kernel.h> 45#include <machine/resource.h> 46#include <machine/bus.h> 47#include <sys/bus.h> 48#include <sys/rman.h> 49 50#define ROCKET_C 51#include <dev/rp/rpreg.h> 52#include <dev/rp/rpvar.h> 53 54#include <pci/pcireg.h> 55#include <pci/pcivar.h> 56 57/* PCI IDs */ 58#define RP_VENDOR_ID 0x11FE 59#define RP_DEVICE_ID_32I 0x0001 60#define RP_DEVICE_ID_8I 0x0002 61#define RP_DEVICE_ID_16I 0x0003 62#define RP_DEVICE_ID_4Q 0x0004 63#define RP_DEVICE_ID_8O 0x0005 64#define RP_DEVICE_ID_8J 0x0006 65#define RP_DEVICE_ID_4J 0x0007 66#define RP_DEVICE_ID_6M 0x000C 67#define RP_DEVICE_ID_4M 0x000D 68 69/************************************************************************** 70 MUDBAC remapped for PCI 71**************************************************************************/ 72 73#define _CFG_INT_PCI 0x40 74#define _PCI_INT_FUNC 0x3A 75 76#define PCI_STROB 0x2000 77#define INTR_EN_PCI 0x0010 78 79/*************************************************************************** 80Function: sPCIControllerEOI 81Purpose: Strobe the MUDBAC's End Of Interrupt bit. 82Call: sPCIControllerEOI(CtlP) 83 CONTROLLER_T *CtlP; Ptr to controller structure 84*/ 85#define sPCIControllerEOI(CtlP) rp_writeio2(CtlP, 0, _PCI_INT_FUNC, PCI_STROB) 86 87/*************************************************************************** 88Function: sPCIGetControllerIntStatus 89Purpose: Get the controller interrupt status 90Call: sPCIGetControllerIntStatus(CtlP) 91 CONTROLLER_T *CtlP; Ptr to controller structure 92Return: Byte_t: The controller interrupt status in the lower 4 93 bits. Bits 0 through 3 represent AIOP's 0 94 through 3 respectively. If a bit is set that 95 AIOP is interrupting. Bits 4 through 7 will 96 always be cleared. 97*/ 98#define sPCIGetControllerIntStatus(CTLP) ((rp_readio2(CTLP, 0, _PCI_INT_FUNC) >> 8) & 0x1f) 99 100static devclass_t rp_devclass; 101 102static int rp_pciprobe(device_t dev); 103static int rp_pciattach(device_t dev); 104#if notdef 105static int rp_pcidetach(device_t dev); 106static int rp_pcishutdown(device_t dev); 107#endif /* notdef */ 108static void rp_pcireleaseresource(CONTROLLER_t *ctlp); 109static int sPCIInitController( CONTROLLER_t *CtlP, 110 int AiopNum, 111 int IRQNum, 112 Byte_t Frequency, 113 int PeriodicOnly, 114 int VendorDevice); 115static rp_aiop2rid_t rp_pci_aiop2rid; 116static rp_aiop2off_t rp_pci_aiop2off; 117static rp_ctlmask_t rp_pci_ctlmask; 118 119/* 120 * The following functions are the pci-specific part 121 * of rp driver. 122 */ 123 124static int 125rp_pciprobe(device_t dev) 126{ 127 char *s; 128 129 s = NULL; 130 if ((pci_get_devid(dev) & 0xffff) == RP_VENDOR_ID) 131 s = "RocketPort PCI"; 132 133 if (s != NULL) { 134 device_set_desc(dev, s); 135 return (0); 136 } 137 138 return (ENXIO); 139} 140 141static int 142rp_pciattach(device_t dev) 143{ 144 int num_ports, num_aiops; 145 int aiop; 146 CONTROLLER_t *ctlp; 147 int unit; 148 int retval; 149 u_int32_t stcmd; 150 151 ctlp = device_get_softc(dev); 152 bzero(ctlp, sizeof(*ctlp)); 153 ctlp->dev = dev; 154 unit = device_get_unit(dev); 155 ctlp->aiop2rid = rp_pci_aiop2rid; 156 ctlp->aiop2off = rp_pci_aiop2off; 157 ctlp->ctlmask = rp_pci_ctlmask; 158 159 /* Wake up the device. */ 160 stcmd = pci_read_config(dev, PCIR_COMMAND, 4); 161 if ((stcmd & PCIM_CMD_PORTEN) == 0) { 162 stcmd |= (PCIM_CMD_PORTEN); 163 pci_write_config(dev, PCIR_COMMAND, 4, stcmd); 164 } 165 166 /* The IO ports of AIOPs for a PCI controller are continuous. */ 167 ctlp->io_num = 1; 168 ctlp->io_rid = malloc(sizeof(*(ctlp->io_rid)) * ctlp->io_num, M_DEVBUF, M_NOWAIT); 169 ctlp->io = malloc(sizeof(*(ctlp->io)) * ctlp->io_num, M_DEVBUF, M_NOWAIT); 170 if (ctlp->io_rid == NULL || ctlp->io == NULL) { 171 device_printf(dev, "rp_pciattach: Out of memory.\n"); 172 retval = ENOMEM; 173 goto nogo; 174 } 175 bzero(ctlp->io_rid, sizeof(*(ctlp->io_rid)) * ctlp->io_num); 176 bzero(ctlp->io, sizeof(*(ctlp->io)) * ctlp->io_num); 177 178 ctlp->bus_ctlp = NULL; 179 180 ctlp->io_rid[0] = 0x10; 181 ctlp->io[0] = bus_alloc_resource(dev, SYS_RES_IOPORT, &ctlp->io_rid[0], 0, ~0, 1, RF_ACTIVE); 182 if(ctlp->io[0] == NULL) { 183 device_printf(dev, "ioaddr mapping failed for RocketPort(PCI).\n"); 184 retval = ENXIO; 185 goto nogo; 186 } 187 188 num_aiops = sPCIInitController(ctlp, 189 MAX_AIOPS_PER_BOARD, 0, 190 FREQ_DIS, 0, (pci_get_devid(dev) >> 16) & 0xffff); 191 192 num_ports = 0; 193 for(aiop=0; aiop < num_aiops; aiop++) { 194 sResetAiopByNum(ctlp, aiop); 195 num_ports += sGetAiopNumChan(ctlp, aiop); 196 } 197 198 retval = rp_attachcommon(ctlp, num_aiops, num_ports); 199 if (retval != 0) 200 goto nogo; 201 202 return (0); 203 204nogo: 205 rp_pcireleaseresource(ctlp); 206 207 return (retval); 208} 209 210#if notdef 211static int 212rp_pcidetach(device_t dev) 213{ 214 CONTROLLER_t *ctlp; 215 216 if (device_get_state(dev) == DS_BUSY) 217 return (EBUSY); 218 219 ctlp = device_get_softc(dev); 220 221 rp_pcireleaseresource(ctlp); 222 223 return (0); 224} 225 226static int 227rp_pcishutdown(device_t dev) 228{ 229 CONTROLLER_t *ctlp; 230 231 if (device_get_state(dev) == DS_BUSY) 232 return (EBUSY); 233 234 ctlp = device_get_softc(dev); 235 236 rp_pcireleaseresource(ctlp); 237 238 return (0); 239} 240#endif /* notdef */ 241 242static void 243rp_pcireleaseresource(CONTROLLER_t *ctlp) 244{ 245 rp_releaseresource(ctlp); 246 247 if (ctlp->io != NULL) { 248 if (ctlp->io[0] != NULL) 249 bus_release_resource(ctlp->dev, SYS_RES_IOPORT, ctlp->io_rid[0], ctlp->io[0]); 250 free(ctlp->io, M_DEVBUF); 251 } 252 if (ctlp->io_rid != NULL) 253 free(ctlp->io_rid, M_DEVBUF); 254} 255 256static int 257sPCIInitController( CONTROLLER_t *CtlP, 258 int AiopNum, 259 int IRQNum, 260 Byte_t Frequency, 261 int PeriodicOnly, 262 int VendorDevice) 263{ 264 int i; 265 266 CtlP->CtlID = CTLID_0001; /* controller release 1 */ 267 268 sPCIControllerEOI(CtlP); 269 270 /* Init AIOPs */ 271 CtlP->NumAiop = 0; 272 for(i=0; i < AiopNum; i++) 273 { 274 /*device_printf(CtlP->dev, "aiop %d.\n", i);*/ 275 CtlP->AiopID[i] = sReadAiopID(CtlP, i); /* read AIOP ID */ 276 /*device_printf(CtlP->dev, "ID = %d.\n", CtlP->AiopID[i]);*/ 277 if(CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ 278 { 279 break; /* done looking for AIOPs */ 280 } 281 282 switch( VendorDevice ) { 283 case RP_DEVICE_ID_4Q: 284 case RP_DEVICE_ID_4J: 285 case RP_DEVICE_ID_4M: 286 CtlP->AiopNumChan[i] = 4; 287 break; 288 case RP_DEVICE_ID_6M: 289 CtlP->AiopNumChan[i] = 6; 290 break; 291 case RP_DEVICE_ID_8O: 292 case RP_DEVICE_ID_8J: 293 case RP_DEVICE_ID_8I: 294 case RP_DEVICE_ID_16I: 295 case RP_DEVICE_ID_32I: 296 CtlP->AiopNumChan[i] = 8; 297 break; 298 default: 299#if notdef 300 CtlP->AiopNumChan[i] = 8; 301#else 302 CtlP->AiopNumChan[i] = sReadAiopNumChan(CtlP, i); 303#endif /* notdef */ 304 break; 305 } 306 /*device_printf(CtlP->dev, "%d channels.\n", CtlP->AiopNumChan[i]);*/ 307 rp_writeaiop2(CtlP, i, _INDX_ADDR,_CLK_PRE); /* clock prescaler */ 308 /*device_printf(CtlP->dev, "configuring clock prescaler.\n");*/ 309 rp_writeaiop1(CtlP, i, _INDX_DATA,CLOCK_PRESC); 310 /*device_printf(CtlP->dev, "configured clock prescaler.\n");*/ 311 CtlP->NumAiop++; /* bump count of AIOPs */ 312 } 313 314 if(CtlP->NumAiop == 0) 315 return(-1); 316 else 317 return(CtlP->NumAiop); 318} 319 320/* 321 * ARGSUSED 322 * Maps (aiop, offset) to rid. 323 */ 324static int 325rp_pci_aiop2rid(int aiop, int offset) 326{ 327 /* Always return zero for a PCI controller. */ 328 return 0; 329} 330 331/* 332 * ARGSUSED 333 * Maps (aiop, offset) to the offset of resource. 334 */ 335static int 336rp_pci_aiop2off(int aiop, int offset) 337{ 338 /* Each AIOP reserves 0x40 bytes. */ 339 return aiop * 0x40 + offset; 340} 341 342/* Read the int status for a PCI controller. */ 343unsigned char 344rp_pci_ctlmask(CONTROLLER_t *ctlp) 345{ 346 return sPCIGetControllerIntStatus(ctlp); 347} 348 349static device_method_t rp_pcimethods[] = { 350 /* Device interface */ 351 DEVMETHOD(device_probe, rp_pciprobe), 352 DEVMETHOD(device_attach, rp_pciattach), 353#if notdef 354 DEVMETHOD(device_detach, rp_pcidetach), 355 DEVMETHOD(device_shutdown, rp_pcishutdown), 356#endif /* notdef */ 357 358 { 0, 0 } 359}; 360 361static driver_t rp_pcidriver = { 362 "rp", 363 rp_pcimethods, 364 sizeof(CONTROLLER_t), 365}; 366 367/* 368 * rp can be attached to a pci bus. 369 */ 370DRIVER_MODULE(rp, pci, rp_pcidriver, rp_devclass, 0, 0); 371