1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2006 Marcel Moolenaar All rights reserved. 5 * Copyright (c) 2001 M. Warner Losh <[email protected]> 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/bus.h> 34 #include <sys/conf.h> 35 #include <sys/kernel.h> 36 #include <sys/module.h> 37 #include <machine/bus.h> 38 #include <sys/rman.h> 39 #include <machine/resource.h> 40 41 #include <dev/pci/pcivar.h> 42 43 #include <dev/uart/uart.h> 44 #include <dev/uart/uart_bus.h> 45 #include <dev/uart/uart_cpu.h> 46 47 #define DEFAULT_RCLK 1843200 48 49 static int uart_pci_probe(device_t dev); 50 static int uart_pci_attach(device_t dev); 51 static int uart_pci_detach(device_t dev); 52 53 static device_method_t uart_pci_methods[] = { 54 /* Device interface */ 55 DEVMETHOD(device_probe, uart_pci_probe), 56 DEVMETHOD(device_attach, uart_pci_attach), 57 DEVMETHOD(device_detach, uart_pci_detach), 58 DEVMETHOD(device_resume, uart_bus_resume), 59 DEVMETHOD_END 60 }; 61 62 static driver_t uart_pci_driver = { 63 uart_driver_name, 64 uart_pci_methods, 65 sizeof(struct uart_softc), 66 }; 67 68 struct pci_id { 69 uint16_t vendor; 70 uint16_t device; 71 uint16_t subven; 72 uint16_t subdev; 73 const char *desc; 74 int rid; 75 int rclk; 76 int regshft; 77 }; 78 79 struct pci_unique_id { 80 uint16_t vendor; 81 uint16_t device; 82 }; 83 84 static const struct pci_id pci_ns8250_ids[] = { 85 { 0x1028, 0x0008, 0xffff, 0, "Dell Remote Access Card III", 0x14, 86 128 * DEFAULT_RCLK }, 87 { 0x1028, 0x0012, 0xffff, 0, "Dell RAC 4 Daughter Card Virtual UART", 0x14, 88 128 * DEFAULT_RCLK }, 89 { 0x1033, 0x0074, 0x1033, 0x8014, "NEC RCV56ACF 56k Voice Modem", 0x10 }, 90 { 0x1033, 0x007d, 0x1033, 0x8012, "NEC RS232C", 0x10 }, 91 { 0x103c, 0x1048, 0x103c, 0x1227, "HP Diva Serial [GSP] UART - Powerbar SP2", 92 0x10 }, 93 { 0x103c, 0x1048, 0x103c, 0x1301, "HP Diva RMP3", 0x14 }, 94 { 0x103c, 0x1290, 0xffff, 0, "HP Auxiliary Diva Serial Port", 0x18 }, 95 { 0x103c, 0x3301, 0xffff, 0, "HP iLO serial port", 0x10 }, 96 { 0x11c1, 0x0480, 0xffff, 0, "Agere Systems Venus Modem (V90, 56KFlex)", 0x14 }, 97 { 0x115d, 0x0103, 0xffff, 0, "Xircom Cardbus Ethernet + 56k Modem", 0x10 }, 98 { 0x125b, 0x9100, 0xa000, 0x1000, 99 "ASIX AX99100 PCIe 1/2/3/4-port RS-232/422/485", 0x10 }, 100 { 0x1282, 0x6585, 0xffff, 0, "Davicom 56PDV PCI Modem", 0x10 }, 101 { 0x12b9, 0x1008, 0xffff, 0, "3Com 56K FaxModem Model 5610", 0x10 }, 102 { 0x131f, 0x1000, 0xffff, 0, "Siig CyberSerial (1-port) 16550", 0x18 }, 103 { 0x131f, 0x1001, 0xffff, 0, "Siig CyberSerial (1-port) 16650", 0x18 }, 104 { 0x131f, 0x1002, 0xffff, 0, "Siig CyberSerial (1-port) 16850", 0x18 }, 105 { 0x131f, 0x2000, 0xffff, 0, "Siig CyberSerial (1-port) 16550", 0x10 }, 106 { 0x131f, 0x2001, 0xffff, 0, "Siig CyberSerial (1-port) 16650", 0x10 }, 107 { 0x131f, 0x2002, 0xffff, 0, "Siig CyberSerial (1-port) 16850", 0x10 }, 108 { 0x135c, 0x0190, 0xffff, 0, "Quatech SSCLP-100", 0x18 }, 109 { 0x135c, 0x01c0, 0xffff, 0, "Quatech SSCLP-200/300", 0x18 }, 110 { 0x135e, 0x7101, 0xffff, 0, "Sealevel Systems Single Port RS-232/422/485/530", 111 0x18 }, 112 { 0x1407, 0x0110, 0xffff, 0, "Lava Computer mfg DSerial-PCI Port A", 0x10 }, 113 { 0x1407, 0x0111, 0xffff, 0, "Lava Computer mfg DSerial-PCI Port B", 0x10 }, 114 { 0x1407, 0x0510, 0xffff, 0, "Lava SP Serial 550 PCI", 0x10 }, 115 { 0x1409, 0x7168, 0x1409, 0x4025, "Timedia Technology Serial Port", 0x10, 116 8 * DEFAULT_RCLK }, 117 { 0x1409, 0x7168, 0x1409, 0x4027, "Timedia Technology Serial Port", 0x10, 118 8 * DEFAULT_RCLK }, 119 { 0x1409, 0x7168, 0x1409, 0x4028, "Timedia Technology Serial Port", 0x10, 120 8 * DEFAULT_RCLK }, 121 { 0x1409, 0x7168, 0x1409, 0x5025, "Timedia Technology Serial Port", 0x10, 122 8 * DEFAULT_RCLK }, 123 { 0x1409, 0x7168, 0x1409, 0x5027, "Timedia Technology Serial Port", 0x10, 124 8 * DEFAULT_RCLK }, 125 { 0x1415, 0x950b, 0xffff, 0, "Oxford Semiconductor OXCB950 Cardbus 16950 UART", 126 0x10, 16384000 }, 127 { 0x1415, 0xc120, 0xffff, 0, "Oxford Semiconductor OXPCIe952 PCIe 16950 UART", 128 0x10 }, 129 { 0x14e4, 0x160a, 0xffff, 0, "Broadcom TruManage UART", 0x10, 130 128 * DEFAULT_RCLK, 2}, 131 { 0x14e4, 0x4344, 0xffff, 0, "Sony Ericsson GC89 PC Card", 0x10}, 132 { 0x151f, 0x0000, 0xffff, 0, "TOPIC Semiconductor TP560 56k modem", 0x10 }, 133 { 0x1d0f, 0x8250, 0x0000, 0, "Amazon PCI serial device", 0x10 }, 134 { 0x1d0f, 0x8250, 0x1d0f, 0, "Amazon PCI serial device", 0x10 }, 135 { 0x1fd4, 0x1999, 0x1fd4, 0x0001, "Sunix SER5xxxx Serial Port", 0x10, 136 8 * DEFAULT_RCLK }, 137 { 0x8086, 0x0f0a, 0xffff, 0, "Intel ValleyView LPIO1 HSUART#1", 0x10, 138 24 * DEFAULT_RCLK, 2 }, 139 { 0x8086, 0x0f0c, 0xffff, 0, "Intel ValleyView LPIO1 HSUART#2", 0x10, 140 24 * DEFAULT_RCLK, 2 }, 141 { 0x8086, 0x108f, 0xffff, 0, "Intel AMT - SOL", 0x10 }, 142 { 0x8086, 0x19d8, 0xffff, 0, "Intel Denverton UART", 0x10 }, 143 { 0x8086, 0x1c3d, 0xffff, 0, "Intel AMT - KT Controller", 0x10 }, 144 { 0x8086, 0x1d3d, 0xffff, 0, "Intel C600/X79 Series Chipset KT Controller", 145 0x10 }, 146 { 0x8086, 0x1e3d, 0xffff, 0, "Intel Panther Point KT Controller", 0x10 }, 147 { 0x8086, 0x228a, 0xffff, 0, "Intel Cherryview SIO HSUART#1", 0x10, 148 24 * DEFAULT_RCLK, 2 }, 149 { 0x8086, 0x228c, 0xffff, 0, "Intel Cherryview SIO HSUART#2", 0x10, 150 24 * DEFAULT_RCLK, 2 }, 151 { 0x8086, 0x2a07, 0xffff, 0, "Intel AMT - PM965/GM965 KT Controller", 0x10 }, 152 { 0x8086, 0x2a47, 0xffff, 0, "Mobile 4 Series Chipset KT Controller", 0x10 }, 153 { 0x8086, 0x2e17, 0xffff, 0, "4 Series Chipset Serial KT Controller", 0x10 }, 154 { 0x8086, 0x31bc, 0xffff, 0, "Intel Gemini Lake SIO/LPSS UART 0", 0x10, 155 24 * DEFAULT_RCLK, 2 }, 156 { 0x8086, 0x31be, 0xffff, 0, "Intel Gemini Lake SIO/LPSS UART 1", 0x10, 157 24 * DEFAULT_RCLK, 2 }, 158 { 0x8086, 0x31c0, 0xffff, 0, "Intel Gemini Lake SIO/LPSS UART 2", 0x10, 159 24 * DEFAULT_RCLK, 2 }, 160 { 0x8086, 0x31ee, 0xffff, 0, "Intel Gemini Lake SIO/LPSS UART 3", 0x10, 161 24 * DEFAULT_RCLK, 2 }, 162 { 0x8086, 0x3b67, 0xffff, 0, "5 Series/3400 Series Chipset KT Controller", 163 0x10 }, 164 { 0x8086, 0x5abc, 0xffff, 0, "Intel Apollo Lake SIO/LPSS UART 0", 0x10, 165 24 * DEFAULT_RCLK, 2 }, 166 { 0x8086, 0x5abe, 0xffff, 0, "Intel Apollo Lake SIO/LPSS UART 1", 0x10, 167 24 * DEFAULT_RCLK, 2 }, 168 { 0x8086, 0x5ac0, 0xffff, 0, "Intel Apollo Lake SIO/LPSS UART 2", 0x10, 169 24 * DEFAULT_RCLK, 2 }, 170 { 0x8086, 0x5aee, 0xffff, 0, "Intel Apollo Lake SIO/LPSS UART 3", 0x10, 171 24 * DEFAULT_RCLK, 2 }, 172 { 0x8086, 0x8811, 0xffff, 0, "Intel EG20T Serial Port 0", 0x10 }, 173 { 0x8086, 0x8812, 0xffff, 0, "Intel EG20T Serial Port 1", 0x10 }, 174 { 0x8086, 0x8813, 0xffff, 0, "Intel EG20T Serial Port 2", 0x10 }, 175 { 0x8086, 0x8814, 0xffff, 0, "Intel EG20T Serial Port 3", 0x10 }, 176 { 0x8086, 0x8c3d, 0xffff, 0, "Intel Lynx Point KT Controller", 0x10 }, 177 { 0x8086, 0x8cbd, 0xffff, 0, "Intel Wildcat Point KT Controller", 0x10 }, 178 { 0x8086, 0x9c3d, 0xffff, 0, "Intel Lynx Point-LP HECI KT", 0x10 }, 179 { 0x8086, 0xa13d, 0xffff, 0, 180 "100 Series/C230 Series Chipset Family KT Redirection", 0x10 }, 181 { 0x9710, 0x9820, 0x1000, 1, "NetMos NM9820 Serial Port", 0x10 }, 182 { 0x9710, 0x9835, 0x1000, 1, "NetMos NM9835 Serial Port", 0x10 }, 183 { 0x9710, 0x9865, 0xa000, 0x1000, "NetMos NM9865 Serial Port", 0x10 }, 184 { 0x9710, 0x9900, 0xa000, 0x1000, 185 "MosChip MCS9900 PCIe to Peripheral Controller", 0x10 }, 186 { 0x9710, 0x9901, 0xa000, 0x1000, 187 "MosChip MCS9901 PCIe to Peripheral Controller", 0x10 }, 188 { 0x9710, 0x9904, 0xa000, 0x1000, 189 "MosChip MCS9904 PCIe to Peripheral Controller", 0x10 }, 190 { 0x9710, 0x9922, 0xa000, 0x1000, 191 "MosChip MCS9922 PCIe to Peripheral Controller", 0x10 }, 192 { 0xdeaf, 0x9051, 0xffff, 0, "Middle Digital PC Weasel Serial Port", 0x10 }, 193 { 0xffff, 0, 0xffff, 0, NULL, 0, 0} 194 }; 195 196 const static struct pci_id * 197 uart_pci_match(device_t dev, const struct pci_id *id) 198 { 199 uint16_t device, subdev, subven, vendor; 200 201 vendor = pci_get_vendor(dev); 202 device = pci_get_device(dev); 203 while (id->vendor != 0xffff && 204 (id->vendor != vendor || id->device != device)) 205 id++; 206 if (id->vendor == 0xffff) 207 return (NULL); 208 if (id->subven == 0xffff) 209 return (id); 210 subven = pci_get_subvendor(dev); 211 subdev = pci_get_subdevice(dev); 212 while (id->vendor == vendor && id->device == device && 213 (id->subven != subven || id->subdev != subdev)) 214 id++; 215 return ((id->vendor == vendor && id->device == device) ? id : NULL); 216 } 217 218 extern SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs; 219 220 /* PCI vendor/device pairs of devices guaranteed to be unique on a system. */ 221 static const struct pci_unique_id pci_unique_devices[] = { 222 { 0x1d0f, 0x8250 } /* Amazon PCI serial device */ 223 }; 224 225 /* Match a UART to a console if it's a PCI device known to be unique. */ 226 static void 227 uart_pci_unique_console_match(device_t dev) 228 { 229 struct uart_softc *sc; 230 struct uart_devinfo * sysdev; 231 const struct pci_unique_id * id; 232 uint16_t vendor, device; 233 234 sc = device_get_softc(dev); 235 vendor = pci_get_vendor(dev); 236 device = pci_get_device(dev); 237 238 /* Is this a device known to exist only once in a system? */ 239 for (id = pci_unique_devices; ; id++) { 240 if (id == &pci_unique_devices[nitems(pci_unique_devices)]) 241 return; 242 if (id->vendor == vendor && id->device == device) 243 break; 244 } 245 246 /* If it matches a console, it must be the same device. */ 247 SLIST_FOREACH(sysdev, &uart_sysdevs, next) { 248 if (sysdev->pci_info.vendor == vendor && 249 sysdev->pci_info.device == device) { 250 sc->sc_sysdev = sysdev; 251 sysdev->bas.rclk = sc->sc_bas.rclk; 252 } 253 } 254 } 255 256 static int 257 uart_pci_probe(device_t dev) 258 { 259 struct uart_softc *sc; 260 const struct pci_id *id; 261 int result; 262 263 sc = device_get_softc(dev); 264 265 id = uart_pci_match(dev, pci_ns8250_ids); 266 if (id != NULL) { 267 sc->sc_class = &uart_ns8250_class; 268 goto match; 269 } 270 /* Add checks for non-ns8250 IDs here. */ 271 return (ENXIO); 272 273 match: 274 result = uart_bus_probe(dev, id->regshft, 0, id->rclk, id->rid, 0, 0); 275 /* Bail out on error. */ 276 if (result > 0) 277 return (result); 278 /* 279 * If we haven't already matched this to a console, check if it's a 280 * PCI device which is known to only exist once in any given system 281 * and we can match it that way. 282 */ 283 if (sc->sc_sysdev == NULL) 284 uart_pci_unique_console_match(dev); 285 /* Set/override the device description. */ 286 if (id->desc) 287 device_set_desc(dev, id->desc); 288 return (result); 289 } 290 291 static int 292 uart_pci_attach(device_t dev) 293 { 294 struct uart_softc *sc; 295 int count; 296 297 sc = device_get_softc(dev); 298 299 /* 300 * Use MSI in preference to legacy IRQ if available. However, experience 301 * suggests this is only reliable when one MSI vector is advertised. 302 */ 303 if (pci_msi_count(dev) == 1) { 304 count = 1; 305 if (pci_alloc_msi(dev, &count) == 0) { 306 sc->sc_irid = 1; 307 device_printf(dev, "Using %d MSI message\n", count); 308 } 309 } 310 311 return (uart_bus_attach(dev)); 312 } 313 314 static int 315 uart_pci_detach(device_t dev) 316 { 317 struct uart_softc *sc; 318 319 sc = device_get_softc(dev); 320 321 if (sc->sc_irid != 0) 322 pci_release_msi(dev); 323 324 return (uart_bus_detach(dev)); 325 } 326 327 DRIVER_MODULE(uart, pci, uart_pci_driver, uart_devclass, NULL, NULL); 328