--- /dev/null
+/*******************************************************************************
+Copyright (C) Marvell International Ltd. and its affiliates
+
+This software file (the "File") is owned and distributed by Marvell
+International Ltd. and/or its affiliates ("Marvell") under the following
+alternative licensing terms. Once you have made an election to distribute the
+File under one of the following license alternatives, please (i) delete this
+introductory statement regarding license alternatives, (ii) delete the two
+license alternatives that you have not elected to use and (iii) preserve the
+Marvell copyright notice above.
+
+********************************************************************************
+Marvell Commercial License Option
+
+If you received this File from Marvell and you have entered into a commercial
+license agreement (a "Commercial License") with Marvell, the File is licensed
+to you under the terms of the applicable Commercial License.
+
+********************************************************************************
+Marvell GPL License Option
+
+If you received this File from Marvell, you may opt to use, redistribute and/or
+modify this File in accordance with the terms and conditions of the General
+Public License Version 2, June 1991 (the "GPL License"), a copy of which is
+available along with the File in the license.txt file or by writing to the Free
+Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 or
+on the worldwide web at http://www.gnu.org/licenses/gpl.txt.
+
+THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE IMPLIED
+WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY
+DISCLAIMED. The GPL License provides additional details about this warranty
+disclaimer.
+********************************************************************************
+Marvell BSD License Option
+
+If you received this File from Marvell, you may opt to use, redistribute and/or
+modify this File under the following licensing terms.
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice,
+ this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+ notice, this list of conditions and the following disclaimer in the
+ documentation and/or other materials provided with the distribution.
+
+ * Neither the name of Marvell nor the names of its contributors may be
+ used to endorse or promote products derived from this software without
+ specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*******************************************************************************/
+
+#include "mvPex.h"
+
+//#define MV_DEBUG
+/* defines */
+#ifdef MV_DEBUG
+ #define DB(x) x
+#else
+ #define DB(x)
+#endif
+
+/* locals */
+typedef struct
+{
+ MV_U32 data;
+ MV_U32 mask;
+}PEX_HEADER_DATA;
+
+/* local function forwad decleration */
+MV_U32 mvPexHwConfigRead (MV_U32 pexIf, MV_U32 bus, MV_U32 dev, MV_U32 func,
+ MV_U32 regOff);
+MV_STATUS mvPexHwConfigWrite(MV_U32 pexIf, MV_U32 bus, MV_U32 dev,
+ MV_U32 func, MV_U32 regOff, MV_U32 data);
+void resetPexConfig(MV_U32 pexIf, MV_U32 bus, MV_U32 dev);
+
+
+PEX_HEADER_DATA configHdr[16] =
+{
+{0x888811ab, 0x00000000}, /*[device ID, vendor ID] */
+{0x00100007, 0x0000ffff}, /*[status register, command register] */
+{0x0604000e, 0x00000000}, /*[programming interface, sub class code, class code, revision ID] */
+{0x00010008, 0x00000000}, /*[BIST, header type, latency time, cache line] */
+{0x00000000, 0x00000000}, /*[base address 0] */
+{0x00000000, 0x00000000}, /*[base address 1] */
+{0x00000000, 0x00ffffff}, /*[secondary latency timersubordinate bus number, secondary bus number, primary bus number] */
+{0x0000f101, 0x00000000}, /*[secondary status ,IO limit, IO base] */
+{0x9ff0a000, 0x00000000}, /*[memory limit, memory base] */
+{0x0001fff1, 0x00000000}, /*[prefetch memory limit, prefetch memory base] */
+{0xffffffff, 0x00000000}, /*[prefetch memory base upper] */
+{0x00000000, 0x00000000}, /*[prefetch memory limit upper] */
+{0xeffff000, 0x00000000}, /*[IO limit upper 16 bits, IO base upper 16 bits] */
+{0x00000000, 0x00000000}, /*[reserved, capability pointer] */
+{0x00000000, 0x00000000}, /*[expansion ROM base address] */
+{0x00000000, 0x000000FF}, /*[bridge control, interrupt pin, interrupt line] */
+};
+
+
+#define HEADER_WRITE(data, offset) configHdr[offset/4].data = ((configHdr[offset/4].data & ~configHdr[offset/4].mask) | \
+ (data & configHdr[offset/4].mask))
+#define HEADER_READ(offset) configHdr[offset/4].data
+
+/*******************************************************************************
+* mvVrtBrgPexInit - Initialize PEX interfaces
+*
+* DESCRIPTION:
+*
+* This function is responsible of intialization of the Pex Interface , It
+* configure the Pex Bars and Windows in the following manner:
+*
+* Assumptions :
+* Bar0 is always internal registers bar
+* Bar1 is always the DRAM bar
+* Bar2 is always the Device bar
+*
+* 1) Sets the Internal registers bar base by obtaining the base from
+* the CPU Interface
+* 2) Sets the DRAM bar base and size by getting the base and size from
+* the CPU Interface when the size is the sum of all enabled DRAM
+* chip selects and the base is the base of CS0 .
+* 3) Sets the Device bar base and size by getting these values from the
+* CPU Interface when the base is the base of the lowest base of the
+* Device chip selects, and the
+*
+*
+* INPUT:
+*
+* pexIf - PEX interface number.
+*
+*
+* OUTPUT:
+* None.
+*
+* RETURN:
+* MV_OK if function success otherwise MV_ERROR or MV_BAD_PARAM
+*
+*******************************************************************************/
+MV_STATUS mvPexVrtBrgInit(MV_U32 pexIf)
+{
+ /* reset PEX tree to recover previous U-boot/Boot configurations */
+ MV_U32 localBus = mvPexLocalBusNumGet(pexIf);
+
+
+ resetPexConfig(pexIf, localBus, 1);
+ return MV_OK;
+}
+
+
+MV_U32 mvPexVrtBrgConfigRead (MV_U32 pexIf, MV_U32 bus, MV_U32 dev, MV_U32 func,
+ MV_U32 regOff)
+{
+
+ MV_U32 localBus = mvPexLocalBusNumGet(pexIf);
+ MV_U32 localDev = mvPexLocalDevNumGet(pexIf);
+ MV_U32 val;
+ if(bus == localBus)
+ {
+ if(dev > 1)
+ {
+/* on the local device allow only device #0 & #1 */
+ return 0xffffffff;
+ }
+ else
+ if (dev == localDev)
+ {
+ /* read the memory controller registers */
+ return mvPexHwConfigRead (pexIf, bus, dev, func, regOff);
+ }
+ else
+ {
+ /* access the virtual brg header */
+ return HEADER_READ(regOff);
+ }
+ }
+ else
+ if(bus == (localBus + 1))
+ {
+ /* access the device behind the virtual bridge */
+ if((dev == localDev) || (dev > 1))
+ {
+ return 0xffffffff;
+ }
+ else
+ {
+ /* access the device behind the virtual bridge, in this case
+ * change the bus number to the local bus number in order to
+ * generate type 0 config cycle
+ */
+ mvPexLocalBusNumSet(pexIf, bus);
+ mvPexLocalDevNumSet(pexIf, 1);
+ val = mvPexHwConfigRead (pexIf, bus, 0, func, regOff);
+ mvPexLocalBusNumSet(pexIf, localBus);
+ mvPexLocalDevNumSet(pexIf, localDev);
+ return val;
+ }
+ }
+ /* for all other devices use the HW function to get the
+ * requested registers
+ */
+ mvPexLocalDevNumSet(pexIf, 1);
+ val = mvPexHwConfigRead (pexIf, bus, dev, func, regOff);
+ mvPexLocalDevNumSet(pexIf, localDev);
+ return val;
+}
+
+
+MV_STATUS mvPexVrtBrgConfigWrite(MV_U32 pexIf, MV_U32 bus, MV_U32 dev,
+ MV_U32 func, MV_U32 regOff, MV_U32 data)
+{
+ MV_U32 localBus = mvPexLocalBusNumGet(pexIf);
+ MV_U32 localDev = mvPexLocalDevNumGet(pexIf);
+ MV_STATUS status;
+
+ if(bus == localBus)
+ {
+ if(dev > 1)
+ {
+ /* on the local device allow only device #0 & #1 */
+ return MV_ERROR;
+ }
+ else
+ if (dev == localDev)
+ {
+ /* read the memory controller registers */
+ return mvPexHwConfigWrite (pexIf, bus, dev, func, regOff, data);
+ }
+ else
+ {
+ /* access the virtual brg header */
+ HEADER_WRITE(data, regOff);
+ return MV_OK;
+ }
+ }
+ else
+ if(bus == (localBus + 1))
+ {
+ /* access the device behind the virtual bridge */
+ if((dev == localDev) || (dev > 1))
+ {
+ return MV_ERROR;
+ }
+ else
+ {
+ /* access the device behind the virtual bridge, in this case
+ * change the bus number to the local bus number in order to
+ * generate type 0 config cycle
+ */
+ //return mvPexHwConfigWrite (pexIf, localBus, dev, func, regOff, data);
+ mvPexLocalBusNumSet(pexIf, bus);
+ mvPexLocalDevNumSet(pexIf, 1);
+ status = mvPexHwConfigWrite (pexIf, bus, 0, func, regOff, data);
+ mvPexLocalBusNumSet(pexIf, localBus);
+ mvPexLocalDevNumSet(pexIf, localDev);
+ return status;
+
+ }
+ }
+ /* for all other devices use the HW function to get the
+ * requested registers
+ */
+ mvPexLocalDevNumSet(pexIf, 1);
+ status = mvPexHwConfigWrite (pexIf, bus, dev, func, regOff, data);
+ mvPexLocalDevNumSet(pexIf, localDev);
+ return status;
+}
+
+
+
+
+void resetPexConfig(MV_U32 pexIf, MV_U32 bus, MV_U32 dev)
+{
+ MV_U32 tData;
+ MV_U32 i;
+
+ /* restore the PEX configuration to initialization state */
+ /* in case PEX P2P call recursive and reset config */
+ tData = mvPexHwConfigRead (pexIf, bus, dev, 0x0, 0x0);
+ if(tData != 0xffffffff)
+ {
+ /* agent had been found - check whether P2P */
+ tData = mvPexHwConfigRead (pexIf, bus, dev, 0x0, 0x8);
+ if((tData & 0xffff0000) == 0x06040000)
+ {/* P2P */
+ /* get the sec bus and the subordinate */
+ MV_U32 secBus;
+ tData = mvPexHwConfigRead (pexIf, bus, dev, 0x0, 0x18);
+ secBus = ((tData >> 8) & 0xff);
+ /* now scan on sec bus */
+ for(i = 0;i < 0xff;i++)
+ {
+ resetPexConfig(pexIf, secBus, i);
+ }
+ /* now reset this device */
+ DB(mvOsPrintf("Reset bus %d dev %d\n", bus, dev));
+ mvPexHwConfigWrite(pexIf, bus, dev, 0x0, 0x18, 0x0);
+ DB(mvOsPrintf("Reset bus %d dev %d\n", bus, dev));
+ }
+ }
+}
+
+
projects / 15.05 / openwrt.git / blobdiff