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1.1 ! root 1: \ ***************************************************************************** ! 2: \ * Copyright (c) 2004, 2008 IBM Corporation ! 3: \ * All rights reserved. ! 4: \ * This program and the accompanying materials ! 5: \ * are made available under the terms of the BSD License ! 6: \ * which accompanies this distribution, and is available at ! 7: \ * http://www.opensource.org/licenses/bsd-license.php ! 8: \ * ! 9: \ * Contributors: ! 10: \ * IBM Corporation - initial implementation ! 11: \ ****************************************************************************/ ! 12: ! 13: \ AMD 8111 I/O hub. ! 14: ! 15: \ See the documentation at http://www.amd.com ; the datasheet for this chip is ! 16: \ document #24674. ! 17: ! 18: \ First, some master config. Not all of this logically belongs to just ! 19: \ one function, and certainly not to the LPC bridge; also, we'll ! 20: \ initialize all functions in "downstream" order, and this code has to be ! 21: \ run first. So do it now. ! 22: ! 23: 00 842 config-b! \ Disable 8237 & 8254 & 8259's. We're not a PC. ! 24: u3? IF ! 25: 80 847 config-b! \ Disable EHCI, as it is terminally broken. ! 26: THEN ! 27: 03 848 config-b! \ Enable LPC, IDE; disable I2C, SMM, AC'97 functions. ! 28: 01 849 config-b! \ Enable USB, disable 100Mb enet. ! 29: 01 84b config-b! \ Enable IO-APIC. ! 30: ! 31: fec00000 s" ioapic.fs" included ! 32: 00 init-ioapic ! 33: ! 34: \ Program PNPIRQ[0,1,2] as IRQ #D,E,F; switch those GPIOs to low-active. ! 35: 0b 848 config-b! \ enable devB:3 ! 36: 7000 b58 config-l! \ map PMxx at pci i/o 7000 ! 37: d1 b41 config-b! \ enable access to PMxx space ! 38: ! 39: \ on JS20 the planar id is encoded in GPIO 29, 30 and 31 ! 40: \ >=5 is GA2 else it is GA1 ! 41: : (planar-id) ( -- planar-id) ! 42: [ 70dd io-c@ 5 rshift 1 and ] LITERAL ! 43: [ 70de io-c@ 5 rshift 2 and ] LITERAL ! 44: [ 70df io-c@ 5 rshift 4 and ] LITERAL ! 45: + + 7 xor ! 46: ; ! 47: ! 48: u3? IF ['] (planar-id) to planar-id THEN ! 49: ! 50: 8 70d3 io-c! 8 70d4 io-c! 8 70d5 io-c! \ set the pins to low-active ! 51: bimini? IF 5 70c4 io-c! THEN \ on bimini set gpio4 as output and high to power up USB ! 52: fec b44 config-w! \ set PNPIRQ pnpirq2 -> f , pnpirq1 -> e pnpirq0 -> c ! 53: 51 b41 config-b! \ disable access to PMxx space ! 54: 03 848 config-b! \ disable devB:3 ! 55: ! 56: \ The function of the PCI controller BARs change depending on the mode the ! 57: \ controller is in. ! 58: \ And the default is legacy mode. Gross. ! 59: 05 909 config-b! \ Enable native PCI mode. ! 60: 03 940 config-b! \ Enable both ports. ! 61: ! 62: \ Enable HPET on 8111, at address fe000000. ! 63: fe000001 8a0 config-l! ! 64: ! 65: : >hpet fe000000 + ; ! 66: : hpet@ >hpet rl@-le ; ! 67: : hpet! >hpet rl!-le ; ! 68: ! 69: INCLUDE freq.fs ! 70: ! 71: \ Disable HPET. ! 72: 0 8a0 config-l! ! 73: ! 74: \ 8111 has only 16 bits of PCI I/O space. Get the address in range. ! 75: 8000 next-pci-io ! ! 76: ! 77: \ before disabling EHCI it needs to be reset ! 78: ! 79: \ first we are setting up the BAR0, so that we can talk to the ! 80: \ memory mapped controller; not using the PCI scan because we just ! 81: \ want a temporary setup ! 82: ! 83: : really-disable-broken-amd8111-ehci ( -- ) ! 84: \ this word only works on U4 systems (JS21/Bimini) ! 85: \ yeah, hardcoded! ! 86: f2000000 to puid ! 87: ! 88: \ the PCI scan would assign pci-next-mmio to that device ! 89: \ let's just take that address ! 90: pci-next-mmio @ 100000 #aligned ! 91: \ pci-bus-number 10 lshift 210 or could be something like 70210 ! 92: \ 7: pci-bus-number ! 93: \ 2: device function ! 94: \ 10: offset 10 (bar 0) ! 95: pci-bus-number 10 lshift 210 or rtas-config-l! ! 96: ! 97: \ enable memory space ! 98: pci-bus-number 10 lshift 204 or dup rtas-config-l@ 2 or swap rtas-config-l! ! 99: ! 100: pci-next-mmio @ 100000 #aligned ( base ) ! 101: ! 102: \ Sequence prescribed for resetting the EHCI contoller ! 103: ! 104: \ If Run/Stop bit (ECAP30 bit 0) is 1 ! 105: \ Set Run/Stop bit to 0 ! 106: \ wait 2ms ! 107: ! 108: dup 30 + rl@ 1 and 1 = IF ! 109: dup 30 + rl@ 1 or ! 110: over 30 + rl! ! 111: 2 ms ! 112: THEN ! 113: ! 114: \ While HCHalted bit (ECAP34 bit 12) is 0 (still running, wait forever) ! 115: \ wait 2ms ! 116: ! 117: BEGIN dup 34 + rl@ 1000 and 0= 2 ms UNTIL ! 118: ! 119: \ Set HCReset bit (ECAP30 bit 1) ! 120: ! 121: dup 30 + 2 swap rl! ! 122: ! 123: \ While HCReset bit is 1 (wait forever for reset to complete) ! 124: \ wait 2ms ! 125: ! 126: BEGIN dup 30 + rl@ 2 and 0= 2 ms UNTIL drop ! 127: ! 128: \ now it is really disabled ! 129: ! 130: \ disable memory space access again ! 131: 2100000 pci-bus-number 10 lshift 204 or rtas-config-l! ! 132: ! 133: 80 847 config-b! \ Disable EHCI, as it is terminally broken. ! 134: ; ! 135: ! 136: my-space pci-class-name type cr ! 137: ! 138: \ copied from pci-properties.fs and pci-scan.fs ! 139: \ changed to disable the EHCI completely just before the scan ! 140: \ and after mem/IO transactions have been enabled ! 141: ! 142: \ Setup the Base and Limits in the Bridge ! 143: \ and scan the bus(es) beyond that Bridge ! 144: : pci-bridge-probe-amd8111 ( addr -- ) ! 145: dup pci-bridge-set-bases \ SetUp all Base Registers ! 146: pci-bus-number 1+ TO pci-bus-number \ increase number of busses found ! 147: pci-device-vec-len 1+ TO pci-device-vec-len \ increase the device-slot vector depth ! 148: dup \ stack config-addr for pci-bus! ! 149: FF swap \ Subordinate Bus Number ( for now to max to open all subbusses ) ! 150: pci-bus-number swap \ Secondary Bus Number ( the new busnumber ) ! 151: dup pci-addr2bus swap \ Primary Bus Number ( the current bus ) ! 152: pci-bus! \ and set them into the bridge ! 153: pci-enable \ enable mem/IO transactions ! 154: ! 155: \ at this point we can talk to the broken EHCI controller ! 156: really-disable-broken-amd8111-ehci ! 157: ! 158: dup pci-bus-scnd@ func-pci-probe-bus \ and probe the secondary bus ! 159: dup pci-bus-number swap pci-bus-subo! \ set SubOrdinate Bus Number to current number of busses ! 160: pci-device-vec-len 1- TO pci-device-vec-len \ decrease the device-slot vector depth ! 161: dup pci-bridge-set-limits \ SetUp all Limit Registers ! 162: drop \ forget the config-addr ! 163: ; ! 164: ! 165: \ used to set up all unknown Bridges. ! 166: \ If a Bridge has no special handling for setup ! 167: \ the device file (pci-bridge_VENDOR_DEVICE.fs) can call ! 168: \ this word to setup busses and scan beyond. ! 169: : pci-bridge-generic-setup-amd8111 ( addr -- ) ! 170: pci-device-slots >r \ save the slot array on return stack ! 171: dup pci-common-props \ set the common properties before scanning the bus ! 172: s" pci" device-type \ the type is allways "pci" ! 173: dup pci-bridge-probe-amd8111 \ find all device connected to it ! 174: dup assign-all-bridge-bars \ set up all memory access BARs ! 175: dup pci-set-irq-line \ set the interrupt pin ! 176: dup pci-set-capabilities \ set up the capabilities ! 177: pci-bridge-props \ and generate all properties ! 178: r> TO pci-device-slots \ and reset the slot array ! 179: ; ! 180: ! 181: : amd8111-bridge-setup ! 182: my-space ! 183: u3? takeover? or IF ! 184: \ if it is js20 or we are coming from takeover ! 185: \ we just do the normal setup ! 186: pci-bridge-generic-setup ! 187: ELSE ! 188: pci-bridge-generic-setup-amd8111 ! 189: THEN ! 190: s" pci" device-name ! 191: ; ! 192: ! 193: amd8111-bridge-setup
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