rp_pci.c revision 272461
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: releng/10.1/sys/dev/rp/rp_pci.c 254263 2013-08-12 23:30:01Z scottl $"); 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 <sys/module.h> 47#include <machine/resource.h> 48#include <machine/bus.h> 49#include <sys/bus.h> 50#include <sys/rman.h> 51 52#define ROCKET_C 53#include <dev/rp/rpreg.h> 54#include <dev/rp/rpvar.h> 55 56#include <dev/pci/pcireg.h> 57#include <dev/pci/pcivar.h> 58 59/* PCI IDs */ 60#define RP_VENDOR_ID 0x11FE 61#define RP_DEVICE_ID_32I 0x0001 62#define RP_DEVICE_ID_8I 0x0002 63#define RP_DEVICE_ID_16I 0x0003 64#define RP_DEVICE_ID_4Q 0x0004 65#define RP_DEVICE_ID_8O 0x0005 66#define RP_DEVICE_ID_8J 0x0006 67#define RP_DEVICE_ID_4J 0x0007 68#define RP_DEVICE_ID_6M 0x000C 69#define RP_DEVICE_ID_4M 0x000D 70#define RP_DEVICE_ID_UPCI_32 0x0801 71#define RP_DEVICE_ID_UPCI_16 0x0803 72#define RP_DEVICE_ID_UPCI_8O 0x0805 73 74/************************************************************************** 75 MUDBAC remapped for PCI 76**************************************************************************/ 77 78#define _CFG_INT_PCI 0x40 79#define _PCI_INT_FUNC 0x3A 80 81#define PCI_STROB 0x2000 82#define INTR_EN_PCI 0x0010 83 84/*************************************************************************** 85Function: sPCIControllerEOI 86Purpose: Strobe the MUDBAC's End Of Interrupt bit. 87Call: sPCIControllerEOI(CtlP) 88 CONTROLLER_T *CtlP; Ptr to controller structure 89*/ 90#define sPCIControllerEOI(CtlP) rp_writeio2(CtlP, 0, _PCI_INT_FUNC, PCI_STROB) 91 92/*************************************************************************** 93Function: sPCIGetControllerIntStatus 94Purpose: Get the controller interrupt status 95Call: sPCIGetControllerIntStatus(CtlP) 96 CONTROLLER_T *CtlP; Ptr to controller structure 97Return: Byte_t: The controller interrupt status in the lower 4 98 bits. Bits 0 through 3 represent AIOP's 0 99 through 3 respectively. If a bit is set that 100 AIOP is interrupting. Bits 4 through 7 will 101 always be cleared. 102*/ 103#define sPCIGetControllerIntStatus(CTLP) ((rp_readio2(CTLP, 0, _PCI_INT_FUNC) >> 8) & 0x1f) 104 105static devclass_t rp_devclass; 106 107static int rp_pciprobe(device_t dev); 108static int rp_pciattach(device_t dev); 109#ifdef notdef 110static int rp_pcidetach(device_t dev); 111static int rp_pcishutdown(device_t dev); 112#endif /* notdef */ 113static void rp_pcireleaseresource(CONTROLLER_t *ctlp); 114static int sPCIInitController( CONTROLLER_t *CtlP, 115 int AiopNum, 116 int IRQNum, 117 Byte_t Frequency, 118 int PeriodicOnly, 119 int VendorDevice); 120static rp_aiop2rid_t rp_pci_aiop2rid; 121static rp_aiop2off_t rp_pci_aiop2off; 122static rp_ctlmask_t rp_pci_ctlmask; 123 124/* 125 * The following functions are the pci-specific part 126 * of rp driver. 127 */ 128 129static int 130rp_pciprobe(device_t dev) 131{ 132 char *s; 133 134 s = NULL; 135 if (pci_get_vendor(dev) == RP_VENDOR_ID) 136 s = "RocketPort PCI"; 137 138 if (s != NULL) { 139 device_set_desc(dev, s); 140 return (BUS_PROBE_DEFAULT); 141 } 142 143 return (ENXIO); 144} 145 146static int 147rp_pciattach(device_t dev) 148{ 149 int num_ports, num_aiops; 150 int aiop; 151 CONTROLLER_t *ctlp; 152 int unit; 153 int retval; 154 155 ctlp = device_get_softc(dev); 156 bzero(ctlp, sizeof(*ctlp)); 157 ctlp->dev = dev; 158 unit = device_get_unit(dev); 159 ctlp->aiop2rid = rp_pci_aiop2rid; 160 ctlp->aiop2off = rp_pci_aiop2off; 161 ctlp->ctlmask = rp_pci_ctlmask; 162 163 /* The IO ports of AIOPs for a PCI controller are continuous. */ 164 ctlp->io_num = 1; 165 ctlp->io_rid = malloc(sizeof(*(ctlp->io_rid)) * ctlp->io_num, M_DEVBUF, M_NOWAIT | M_ZERO); 166 ctlp->io = malloc(sizeof(*(ctlp->io)) * ctlp->io_num, M_DEVBUF, M_NOWAIT | M_ZERO); 167 if (ctlp->io_rid == NULL || ctlp->io == NULL) { 168 device_printf(dev, "rp_pciattach: Out of memory.\n"); 169 retval = ENOMEM; 170 goto nogo; 171 } 172 173 ctlp->bus_ctlp = NULL; 174 175 switch (pci_get_device(dev)) { 176 case RP_DEVICE_ID_UPCI_16: 177 case RP_DEVICE_ID_UPCI_32: 178 case RP_DEVICE_ID_UPCI_8O: 179 ctlp->io_rid[0] = PCIR_BAR(2); 180 break; 181 default: 182 ctlp->io_rid[0] = PCIR_BAR(0); 183 break; 184 } 185 ctlp->io[0] = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 186 &ctlp->io_rid[0], RF_ACTIVE); 187 if(ctlp->io[0] == NULL) { 188 device_printf(dev, "ioaddr mapping failed for RocketPort(PCI).\n"); 189 retval = ENXIO; 190 goto nogo; 191 } 192 193 num_aiops = sPCIInitController(ctlp, 194 MAX_AIOPS_PER_BOARD, 0, 195 FREQ_DIS, 0, pci_get_device(dev)); 196 197 num_ports = 0; 198 for(aiop=0; aiop < num_aiops; aiop++) { 199 sResetAiopByNum(ctlp, aiop); 200 num_ports += sGetAiopNumChan(ctlp, aiop); 201 } 202 203 retval = rp_attachcommon(ctlp, num_aiops, num_ports); 204 if (retval != 0) 205 goto nogo; 206 207 return (0); 208 209nogo: 210 rp_pcireleaseresource(ctlp); 211 212 return (retval); 213} 214 215static int 216rp_pcidetach(device_t dev) 217{ 218 CONTROLLER_t *ctlp; 219 220 ctlp = device_get_softc(dev); 221 rp_pcireleaseresource(ctlp); 222 223 return (0); 224} 225 226static int 227rp_pcishutdown(device_t dev) 228{ 229 CONTROLLER_t *ctlp; 230 231 ctlp = device_get_softc(dev); 232 rp_pcireleaseresource(ctlp); 233 234 return (0); 235} 236 237static void 238rp_pcireleaseresource(CONTROLLER_t *ctlp) 239{ 240 rp_untimeout(); 241 if (ctlp->io != NULL) { 242 if (ctlp->io[0] != NULL) 243 bus_release_resource(ctlp->dev, SYS_RES_IOPORT, ctlp->io_rid[0], ctlp->io[0]); 244 free(ctlp->io, M_DEVBUF); 245 ctlp->io = NULL; 246 } 247 if (ctlp->io_rid != NULL) { 248 free(ctlp->io_rid, M_DEVBUF); 249 ctlp->io = NULL; 250 } 251 rp_releaseresource(ctlp); 252} 253 254static int 255sPCIInitController( CONTROLLER_t *CtlP, 256 int AiopNum, 257 int IRQNum, 258 Byte_t Frequency, 259 int PeriodicOnly, 260 int VendorDevice) 261{ 262 int i; 263 264 CtlP->CtlID = CTLID_0001; /* controller release 1 */ 265 266 sPCIControllerEOI(CtlP); 267 268 /* Init AIOPs */ 269 CtlP->NumAiop = 0; 270 for(i=0; i < AiopNum; i++) 271 { 272 /*device_printf(CtlP->dev, "aiop %d.\n", i);*/ 273 CtlP->AiopID[i] = sReadAiopID(CtlP, i); /* read AIOP ID */ 274 /*device_printf(CtlP->dev, "ID = %d.\n", CtlP->AiopID[i]);*/ 275 if(CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */ 276 { 277 break; /* done looking for AIOPs */ 278 } 279 280 switch( VendorDevice ) { 281 case RP_DEVICE_ID_4Q: 282 case RP_DEVICE_ID_4J: 283 case RP_DEVICE_ID_4M: 284 CtlP->AiopNumChan[i] = 4; 285 break; 286 case RP_DEVICE_ID_6M: 287 CtlP->AiopNumChan[i] = 6; 288 break; 289 case RP_DEVICE_ID_8O: 290 case RP_DEVICE_ID_8J: 291 case RP_DEVICE_ID_8I: 292 case RP_DEVICE_ID_16I: 293 case RP_DEVICE_ID_32I: 294 CtlP->AiopNumChan[i] = 8; 295 break; 296 default: 297#ifdef notdef 298 CtlP->AiopNumChan[i] = 8; 299#else 300 CtlP->AiopNumChan[i] = sReadAiopNumChan(CtlP, i); 301#endif /* notdef */ 302 break; 303 } 304 /*device_printf(CtlP->dev, "%d channels.\n", CtlP->AiopNumChan[i]);*/ 305 rp_writeaiop2(CtlP, i, _INDX_ADDR,_CLK_PRE); /* clock prescaler */ 306 /*device_printf(CtlP->dev, "configuring clock prescaler.\n");*/ 307 rp_writeaiop1(CtlP, i, _INDX_DATA,CLOCK_PRESC); 308 /*device_printf(CtlP->dev, "configured clock prescaler.\n");*/ 309 CtlP->NumAiop++; /* bump count of AIOPs */ 310 } 311 312 if(CtlP->NumAiop == 0) 313 return(-1); 314 else 315 return(CtlP->NumAiop); 316} 317 318/* 319 * ARGSUSED 320 * Maps (aiop, offset) to rid. 321 */ 322static int 323rp_pci_aiop2rid(int aiop, int offset) 324{ 325 /* Always return zero for a PCI controller. */ 326 return 0; 327} 328 329/* 330 * ARGSUSED 331 * Maps (aiop, offset) to the offset of resource. 332 */ 333static int 334rp_pci_aiop2off(int aiop, int offset) 335{ 336 /* Each AIOP reserves 0x40 bytes. */ 337 return aiop * 0x40 + offset; 338} 339 340/* Read the int status for a PCI controller. */ 341static unsigned char 342rp_pci_ctlmask(CONTROLLER_t *ctlp) 343{ 344 return sPCIGetControllerIntStatus(ctlp); 345} 346 347static device_method_t rp_pcimethods[] = { 348 /* Device interface */ 349 DEVMETHOD(device_probe, rp_pciprobe), 350 DEVMETHOD(device_attach, rp_pciattach), 351 DEVMETHOD(device_detach, rp_pcidetach), 352 DEVMETHOD(device_shutdown, rp_pcishutdown), 353 354 { 0, 0 } 355}; 356 357static driver_t rp_pcidriver = { 358 "rp", 359 rp_pcimethods, 360 sizeof(CONTROLLER_t), 361}; 362 363/* 364 * rp can be attached to a pci bus. 365 */ 366DRIVER_MODULE(rp, pci, rp_pcidriver, rp_devclass, 0, 0); 367