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Once you have made an election to distribute the 7File under one of the following license alternatives, please (i) delete this 8introductory statement regarding license alternatives, (ii) delete the two 9license alternatives that you have not elected to use and (iii) preserve the 10Marvell copyright notice above. 11 12******************************************************************************** 13Marvell Commercial License Option 14 15If you received this File from Marvell and you have entered into a commercial 16license agreement (a "Commercial License") with Marvell, the File is licensed 17to you under the terms of the applicable Commercial License. 18 19******************************************************************************** 20Marvell GPL License Option 21 22If you received this File from Marvell, you may opt to use, redistribute and/or 23modify this File in accordance with the terms and conditions of the General 24Public License Version 2, June 1991 (the "GPL License"), a copy of which is 25available along with the File in the license.txt file or by writing to the Free 26Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or 27on the worldwide web at http://www.gnu.org/licenses/gpl.txt. 28 29THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED 30WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY 31DISCLAIMED. The GPL License provides additional details about this warranty 32disclaimer. 33******************************************************************************** 34Marvell BSD License Option 35 36If you received this File from Marvell, you may opt to use, redistribute and/or 37modify this File under the following licensing terms. 38Redistribution and use in source and binary forms, with or without modification, 39are permitted provided that the following conditions are met: 40 41 * Redistributions of source code must retain the above copyright notice, 42 this list of conditions and the following disclaimer. 43 44 * Redistributions in binary form must reproduce the above copyright 45 notice, this list of conditions and the following disclaimer in the 46 documentation and/or other materials provided with the distribution. 47 48 * Neither the name of Marvell nor the names of its contributors may be 49 used to endorse or promote products derived from this software without 50 specific prior written permission. 51 52THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 53ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 54WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 55DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 56ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 57(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 58LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 59ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 60(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 61SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 63*******************************************************************************/ 64 65#include "mvPex.h" 66 67//#define MV_DEBUG 68/* defines */ 69#ifdef MV_DEBUG 70 #define DB(x) x 71#else 72 #define DB(x) 73#endif 74 75/* locals */ 76typedef struct 77{ 78 MV_U32 data; 79 MV_U32 mask; 80}PEX_HEADER_DATA; 81 82/* local function forwad decleration */ 83MV_U32 mvPexHwConfigRead (MV_U32 pexIf, MV_U32 bus, MV_U32 dev, MV_U32 func, 84 MV_U32 regOff); 85MV_STATUS mvPexHwConfigWrite(MV_U32 pexIf, MV_U32 bus, MV_U32 dev, 86 MV_U32 func, MV_U32 regOff, MV_U32 data); 87void resetPexConfig(MV_U32 pexIf, MV_U32 bus, MV_U32 dev); 88 89 90PEX_HEADER_DATA configHdr[16] = 91{ 92{0x888811ab, 0x00000000}, /*[device ID, vendor ID] */ 93{0x00100007, 0x0000ffff}, /*[status register, command register] */ 94{0x0604000e, 0x00000000}, /*[programming interface, sub class code, class code, revision ID] */ 95{0x00010008, 0x00000000}, /*[BIST, header type, latency time, cache line] */ 96{0x00000000, 0x00000000}, /*[base address 0] */ 97{0x00000000, 0x00000000}, /*[base address 1] */ 98{0x00000000, 0x00ffffff}, /*[secondary latency timersubordinate bus number, secondary bus number, primary bus number] */ 99{0x0000f101, 0x00000000}, /*[secondary status ,IO limit, IO base] */ 100{0x9ff0a000, 0x00000000}, /*[memory limit, memory base] */ 101{0x0001fff1, 0x00000000}, /*[prefetch memory limit, prefetch memory base] */ 102{0xffffffff, 0x00000000}, /*[prefetch memory base upper] */ 103{0x00000000, 0x00000000}, /*[prefetch memory limit upper] */ 104{0xeffff000, 0x00000000}, /*[IO limit upper 16 bits, IO base upper 16 bits] */ 105{0x00000000, 0x00000000}, /*[reserved, capability pointer] */ 106{0x00000000, 0x00000000}, /*[expansion ROM base address] */ 107{0x00000000, 0x000000FF}, /*[bridge control, interrupt pin, interrupt line] */ 108}; 109 110 111#define HEADER_WRITE(data, offset) configHdr[offset/4].data = ((configHdr[offset/4].data & ~configHdr[offset/4].mask) | \ 112 (data & configHdr[offset/4].mask)) 113#define HEADER_READ(offset) configHdr[offset/4].data 114 115/******************************************************************************* 116* mvVrtBrgPexInit - Initialize PEX interfaces 117* 118* DESCRIPTION: 119* 120* This function is responsible of intialization of the Pex Interface , It 121* configure the Pex Bars and Windows in the following manner: 122* 123* Assumptions : 124* Bar0 is always internal registers bar 125* Bar1 is always the DRAM bar 126* Bar2 is always the Device bar 127* 128* 1) Sets the Internal registers bar base by obtaining the base from 129* the CPU Interface 130* 2) Sets the DRAM bar base and size by getting the base and size from 131* the CPU Interface when the size is the sum of all enabled DRAM 132* chip selects and the base is the base of CS0 . 133* 3) Sets the Device bar base and size by getting these values from the 134* CPU Interface when the base is the base of the lowest base of the 135* Device chip selects, and the 136* 137* 138* INPUT: 139* 140* pexIf - PEX interface number. 141* 142* 143* OUTPUT: 144* None. 145* 146* RETURN: 147* MV_OK if function success otherwise MV_ERROR or MV_BAD_PARAM 148* 149*******************************************************************************/ 150MV_STATUS mvPexVrtBrgInit(MV_U32 pexIf) 151{ 152 /* reset PEX tree to recover previous U-boot/Boot configurations */ 153 MV_U32 localBus = mvPexLocalBusNumGet(pexIf); 154 155 156 resetPexConfig(pexIf, localBus, 1); 157 return MV_OK; 158} 159 160 161MV_U32 mvPexVrtBrgConfigRead (MV_U32 pexIf, MV_U32 bus, MV_U32 dev, MV_U32 func, 162 MV_U32 regOff) 163{ 164 165 MV_U32 localBus = mvPexLocalBusNumGet(pexIf); 166 MV_U32 localDev = mvPexLocalDevNumGet(pexIf); 167 MV_U32 val; 168 if(bus == localBus) 169 { 170 if(dev > 1) 171 { 172/* on the local device allow only device #0 & #1 */ 173 return 0xffffffff; 174 } 175 else 176 if (dev == localDev) 177 { 178 /* read the memory controller registers */ 179 return mvPexHwConfigRead (pexIf, bus, dev, func, regOff); 180 } 181 else 182 { 183 /* access the virtual brg header */ 184 return HEADER_READ(regOff); 185 } 186 } 187 else 188 if(bus == (localBus + 1)) 189 { 190 /* access the device behind the virtual bridge */ 191 if((dev == localDev) || (dev > 1)) 192 { 193 return 0xffffffff; 194 } 195 else 196 { 197 /* access the device behind the virtual bridge, in this case 198 * change the bus number to the local bus number in order to 199 * generate type 0 config cycle 200 */ 201 mvPexLocalBusNumSet(pexIf, bus); 202 mvPexLocalDevNumSet(pexIf, 1); 203 val = mvPexHwConfigRead (pexIf, bus, 0, func, regOff); 204 mvPexLocalBusNumSet(pexIf, localBus); 205 mvPexLocalDevNumSet(pexIf, localDev); 206 return val; 207 } 208 } 209 /* for all other devices use the HW function to get the 210 * requested registers 211 */ 212 mvPexLocalDevNumSet(pexIf, 1); 213 val = mvPexHwConfigRead (pexIf, bus, dev, func, regOff); 214 mvPexLocalDevNumSet(pexIf, localDev); 215 return val; 216} 217 218 219MV_STATUS mvPexVrtBrgConfigWrite(MV_U32 pexIf, MV_U32 bus, MV_U32 dev, 220 MV_U32 func, MV_U32 regOff, MV_U32 data) 221{ 222 MV_U32 localBus = mvPexLocalBusNumGet(pexIf); 223 MV_U32 localDev = mvPexLocalDevNumGet(pexIf); 224 MV_STATUS status; 225 226 if(bus == localBus) 227 { 228 if(dev > 1) 229 { 230 /* on the local device allow only device #0 & #1 */ 231 return MV_ERROR; 232 } 233 else 234 if (dev == localDev) 235 { 236 /* read the memory controller registers */ 237 return mvPexHwConfigWrite (pexIf, bus, dev, func, regOff, data); 238 } 239 else 240 { 241 /* access the virtual brg header */ 242 HEADER_WRITE(data, regOff); 243 return MV_OK; 244 } 245 } 246 else 247 if(bus == (localBus + 1)) 248 { 249 /* access the device behind the virtual bridge */ 250 if((dev == localDev) || (dev > 1)) 251 { 252 return MV_ERROR; 253 } 254 else 255 { 256 /* access the device behind the virtual bridge, in this case 257 * change the bus number to the local bus number in order to 258 * generate type 0 config cycle 259 */ 260 //return mvPexHwConfigWrite (pexIf, localBus, dev, func, regOff, data); 261 mvPexLocalBusNumSet(pexIf, bus); 262 mvPexLocalDevNumSet(pexIf, 1); 263 status = mvPexHwConfigWrite (pexIf, bus, 0, func, regOff, data); 264 mvPexLocalBusNumSet(pexIf, localBus); 265 mvPexLocalDevNumSet(pexIf, localDev); 266 return status; 267 268 } 269 } 270 /* for all other devices use the HW function to get the 271 * requested registers 272 */ 273 mvPexLocalDevNumSet(pexIf, 1); 274 status = mvPexHwConfigWrite (pexIf, bus, dev, func, regOff, data); 275 mvPexLocalDevNumSet(pexIf, localDev); 276 return status; 277} 278 279 280 281 282void resetPexConfig(MV_U32 pexIf, MV_U32 bus, MV_U32 dev) 283{ 284 MV_U32 tData; 285 MV_U32 i; 286 287 /* restore the PEX configuration to initialization state */ 288 /* in case PEX P2P call recursive and reset config */ 289 tData = mvPexHwConfigRead (pexIf, bus, dev, 0x0, 0x0); 290 if(tData != 0xffffffff) 291 { 292 /* agent had been found - check whether P2P */ 293 tData = mvPexHwConfigRead (pexIf, bus, dev, 0x0, 0x8); 294 if((tData & 0xffff0000) == 0x06040000) 295 {/* P2P */ 296 /* get the sec bus and the subordinate */ 297 MV_U32 secBus; 298 tData = mvPexHwConfigRead (pexIf, bus, dev, 0x0, 0x18); 299 secBus = ((tData >> 8) & 0xff); 300 /* now scan on sec bus */ 301 for(i = 0;i < 0xff;i++) 302 { 303 resetPexConfig(pexIf, secBus, i); 304 } 305 /* now reset this device */ 306 DB(mvOsPrintf("Reset bus %d dev %d\n", bus, dev)); 307 mvPexHwConfigWrite(pexIf, bus, dev, 0x0, 0x18, 0x0); 308 DB(mvOsPrintf("Reset bus %d dev %d\n", bus, dev)); 309 } 310 } 311} 312 313 314