diff options
Diffstat (limited to 'src/northbridge/amd/amdk8/get_sblk_pci1234.c')
| -rw-r--r-- | src/northbridge/amd/amdk8/get_sblk_pci1234.c | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/src/northbridge/amd/amdk8/get_sblk_pci1234.c b/src/northbridge/amd/amdk8/get_sblk_pci1234.c deleted file mode 100644 index fd9584f349..0000000000 --- a/src/northbridge/amd/amdk8/get_sblk_pci1234.c +++ /dev/null @@ -1,217 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2005 - 2008 Advanced Micro Devices, Inc. - * Copyright (C) 2007 coresystems GmbH - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; version 2 of the License. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - - -// 2005.9 yhlu serengeti support -// 2005.9 yhlu modify that to more dynamic for AMD Opteron Based MB -// 2007.9 stepan improve code documentation - -#include <console/console.h> -#include <device/pci.h> -#include <device/pci_ids.h> -#include <string.h> -#include <stdint.h> - -#include <cpu/amd/amdk8_sysconf.h> - -/* - * Why we need the pci1234[] array - * - * It will keep the sequence of HT devices in the HT link registers even when a - * given HT I/O card is not installed. - * - * The final result for pci1234[] will be - * - * pci1234[0] will record the south bridge link and bus range - * pci1234[i] will record HT chain i. - * - * For example, on the Tyan S2885 ramstage will put the AMD8151 chain (HT - * link 0) into the register 0xE0, and the AMD8131/8111 HT chain into the - * register 0xE4. - * - * So we need to make sure that the south bridge link will always be on - * pci1234[0]. - * - * Imagine a scenario with multiple HT I/O cards, where you don't install HT I/O 1, - * but you only install HT I/O 2 and HT I/O 3. The HT I/Os will end up in registers - * 0xE4 and 0xE8. - * - * But we want to leave pci1234[1] to HT I/O 1 (even though it is disabled), - * and let HT I/O 2 and HT I/O 3 still use pci1234[2] and pci1234[3]. - * - * So we keep the sequence. You need to preset the pci1234[1], pci1234[2], - * pci1234[3] for this purpose. - * - * For this example you need to set - * - * unsigned pci1234[] = { - * 0x0000ff0, - * 0x0000f10, // HT IO 1 card always on node 1 - * 0x0000f20, // HT IO 2 card always on node 2 - * 0x0000f30 // HT IO 3 card always on node 3 - * }; - * - * For 2P + htio(n1) + htio(n0_1) + htio(n1_1), 2P + htio(n1) + 2P + htio(n2) + htio(n3): - * You need an array pci1234[6]: - * - * unsigned pci1234[] = { - * 0x0000ff0, - * 0x0000010, // HT IO 1 card always on node 1 - * 0x0000f00, // HT IO 2 card always on node 0 - * 0x0000110, // HT IO 3 card always on node 1 - * 0x0000f20, // HT IO 4 card always on node 2 - * 0x0000f30 // HT IO 5 card always on node 3 - * }; - * - * - * For 4p+htio(n1)+htio(n2)+htio(n3),4p+htio(n1)+4p+htio(n6)+htio(n7): - * You need an array pci1234[6]: - * - * unsigned pci1234[] = { - * 0x0000ff0, - * 0x0000f10, // HT IO 1 card always on node 1 - * 0x0000f20, // HT IO 2 card always on node 2 - * 0x0000f30, // HT IO 3 card always on node 3 - * 0x0000f60, // HT IO 4 card always on node 6 - * 0x0000f70 // HT IO 5 card always on node 7 - * }; - * - * - * For 2p + htio(n1) + htio(n0_1) + htio(n1_1), 2P + htio(n1) + 2P + - * htio(n2) + htio(n3), 2P + htio(n1) + 4P + htio(n4) + htio(n5), - * you need an array pci1234[8]: - * - * unsigned pci1234[] = { - * 0x0000ff0, - * 0x0000010, // HT IO 1 card always on node 1 - * 0x0000f00, // HT IO 2 card always on node 0 - * 0x0000110, // HT IO 3 card always on node 1 - * 0x0000f20, // HT IO 4 card always on node 2 - * 0x0000f30 // HT IO 5 card always on node 3 - * 0x0000f40, // HT IO 6 card always on node 4 - * 0x0000f50 // HT IO 7 card always on node 5 - * }; - * - * - * For 4P + htio(n1) + htio(n2) + htio(n3), 4p + htio(n1) + 2p + htio(n4) + - * htio(n5), 4p + htio(n1) + 4p + htio(n6) + htio(n7), - * you need an array pci1234[8]: - * - * unsigned pci1234[] = { - * 0x0000ff0, - * 0x0000f10, // HT IO 1 card always on node 1 - * 0x0000f20, // HT IO 2 card always on node 2 - * 0x0000f30, // HT IO 3 card always on node 3 - * 0x0000f40, // HT IO 4 card always on node 4 - * 0x0000f50 // HT IO 5 card always on node 5 - * 0x0000f60, // HT IO 6 card always on node 6 - * 0x0000f70 // HT IO 7 card always on node 7 - * }; - * - * - * So the maximum posible value of HC_POSSIBLE_NUM is 8. (FIXME Why?) - * - * 1n: 3 - * 2n: 2x2 - 1 - * 4n: 1x4 - 2 - * 6n: 2 - * 8n: 2 - * Total: 12 - * - * Just put all the possible HT Node/link to the list tp pci1234[] in - * src/mainboard/<vendor>/<mainboard>get_bus_conf.c - * - * What about co-processor in socket 1 on a 2 way system? Or socket 2 and - * socket 3 on a 4 way system? Treat that as an HC, too! - * - */ - -void get_sblk_pci1234(void) -{ - - struct device *dev; - int i,j; - uint32_t dword; - - /* read PCI_DEV(0,0x18,0) 0x64 bit [8:9] to find out SbLink m */ - dev = dev_find_slot(0, PCI_DEVFN(0x18,0)); - dword = pci_read_config32(dev, 0x64); - sysconf.sblk = (dword>>8) & 0x3; - - dword &=0x0300; - dword |= 1; - sysconf.pci1234[0] = dword; - sysconf.hcid[0] = 0; - - /* About hardcoded numbering for HT_IO support - * - * Set the node_id and link_id that could have a HT chain in the one - * array, (FIXME: which one?) then check if is enabled. Then update - * final value - */ - - /* Here we need to set hcdn - * - * 1. hypertransport.c needs to record hcdn_reg together with 0xe0, - * 0xe4, 0xe8, 0xec when are set (FIXME: when WHAT is set?) - * - * 2. So at the same time we need update hcdn with hcdn_reg here. FIXME: Why? - */ - - dev = dev_find_slot(0, PCI_DEVFN(0x18, 1)); - - for (j = 0; j < 4; j++) { - uint32_t dwordx; - dwordx = pci_read_config32(dev, 0xe0 + j*4); - dwordx &=0xffff0ff1; /* keep bus num, node_id, link_num, enable bits */ - if ((dwordx & 0xff1) == dword) { /* SBLINK */ - sysconf.pci1234[0] = dwordx; - sysconf.hcdn[0] = sysconf.hcdn_reg[j]; - continue; - } - - if ((dwordx & 1) == 1) { - /* We need to find out the number of HC - * for exact match - */ - for (i = 1; i < sysconf.hc_possible_num; i++) { - if ((dwordx & 0xff0) == (sysconf.pci1234[i] & 0xff0)) { - sysconf.pci1234[i] = dwordx; - sysconf.hcdn[i] = sysconf.hcdn_reg[j]; - break; - } - } - - /* For 0xff0 match or same node */ - for (i = 1; i < sysconf.hc_possible_num; i++) { - if ((dwordx & 0xff0) == (dwordx & sysconf.pci1234[i] & 0xff0)) { - sysconf.pci1234[i] = dwordx; - sysconf.hcdn[i] = sysconf.hcdn_reg[j]; - break; - } - } - } - } - - for (i = 1; i < sysconf.hc_possible_num; i++) { - if ((sysconf.pci1234[i] & 1) != 1) { - sysconf.pci1234[i] = 0; - sysconf.hcdn[i] = 0x20202020; - } - sysconf.hcid[i] = 0; - } - -} |