/* * This file is part of the coreboot project. * * Copyright (C) 2008 Advanced Micro Devices, Inc. * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include #include #include #include #include #include #include #include #include "rs690.h" static device_t find_nb_dev(device_t dev, u32 devfn) { device_t nb_dev; nb_dev = dev_find_slot(dev->bus->secondary, devfn); if (!nb_dev) return nb_dev; if ((nb_dev->vendor != PCI_VENDOR_ID_ATI) || (nb_dev->device != PCI_DEVICE_ID_ATI_RS690_HT)) { u32 id; id = pci_read_config32(nb_dev, PCI_VENDOR_ID); if (id != (PCI_VENDOR_ID_ATI | (PCI_DEVICE_ID_ATI_RS690_HT << 16))) { nb_dev = 0; } } return nb_dev; } /***************************************** * Compliant with CIM_33's ATINB_MiscClockCtrl *****************************************/ void static rs690_config_misc_clk(device_t nb_dev) { u32 reg; u16 word; /* u8 byte; */ struct bus pbus; /* fake bus for dev0 fun1 */ reg = pci_read_config32(nb_dev, 0x4c); reg |= 1 << 0; pci_write_config32(nb_dev, 0x4c, reg); word = pci_cf8_conf1.read16(&pbus, 0, 1, 0xf8); word &= 0xf00; pci_cf8_conf1.write16(&pbus, 0, 1, 0xf8, word); word = pci_cf8_conf1.read16(&pbus, 0, 1, 0xe8); word &= ~((1 << 12) | (1 << 13) | (1 << 14)); word |= 1 << 13; pci_cf8_conf1.write16(&pbus, 0, 1, 0xe8, word); reg = pci_cf8_conf1.read32(&pbus, 0, 1, 0x94); reg &= ~((1 << 16) | (1 << 24) | (1 << 28)); pci_cf8_conf1.write32(&pbus, 0, 1, 0x94, reg); reg = pci_cf8_conf1.read32(&pbus, 0, 1, 0x8c); reg &= ~((1 << 13) | (1 << 14) | (1 << 24) | (1 << 25)); reg |= 1 << 13; pci_cf8_conf1.write32(&pbus, 0, 1, 0x8c, reg); reg = pci_cf8_conf1.read32(&pbus, 0, 1, 0xcc); reg |= 1 << 24; pci_cf8_conf1.write32(&pbus, 0, 1, 0xcc, reg); reg = nbmc_read_index(nb_dev, 0x7a); reg &= ~0x3f; reg |= 1 << 2; reg &= ~(1 << 6); set_htiu_enable_bits(nb_dev, 0x05, 1 << 11, 1 << 11); nbmc_write_index(nb_dev, 0x7a, reg); /* Powering Down efuse and strap block clocks after boot-up. GFX Mode. */ reg = pci_cf8_conf1.read32(&pbus, 0, 1, 0xcc); reg &= ~(1 << 23); reg |= 1 << 24; pci_cf8_conf1.write32(&pbus, 0, 1, 0xcc, reg); #if 0 /* Powerdown reference clock to graphics core PLL in northbridge only mode */ reg = pci_cf8_conf1.read32(&pbus, 0, 1, 0x8c); reg |= 1 << 21; pci_cf8_conf1.write32(&pbus, 0, 1, 0x8c, reg); /* Powering Down efuse and strap block clocks after boot-up. NB Only Mode. */ reg = pci_cf8_conf1.read32(&pbus, 0, 1, 0xcc); reg |= (1 << 23) | (1 << 24); pci_cf8_conf1.write32(&pbus, 0, 1, 0xcc, reg); /* Powerdown clock to memory controller in northbridge only mode */ byte = pci_cf8_conf1.read8(&pbus, 0, 1, 0xe4); byte |= 1 << 0; pci_cf8_conf1.write8(&pbus, 0, 1, 0xe4, reg); /* CLKCFG:0xE8 Bit[17] = 0x1 Powerdown clock to IOC GFX block in no external graphics mode */ /* TODO: */ #endif reg = pci_read_config32(nb_dev, 0x4c); reg &= ~(1 << 0); pci_write_config32(nb_dev, 0x4c, reg); set_htiu_enable_bits(nb_dev, 0x05, 7 << 8, 7 << 8); } /*********************************************** * 0:00.0 NBCFG : * 0:00.1 CLK : bit 0 of nb_cfg 0x4c : 0 - disable, default * 0:01.0 P2P Internal: * 0:02.0 P2P : bit 2 of nbmiscind 0x0c : 0 - enable, default + 32 * 2 * 0:03.0 P2P : bit 3 of nbmiscind 0x0c : 0 - enable, default + 32 * 2 * 0:04.0 P2P : bit 4 of nbmiscind 0x0c : 0 - enable, default + 32 * 2 * 0:05.0 P2P : bit 5 of nbmiscind 0x0c : 0 - enable, default + 32 * 2 * 0:06.0 P2P : bit 6 of nbmiscind 0x0c : 0 - enable, default + 32 * 2 * 0:07.0 P2P : bit 7 of nbmiscind 0x0c : 0 - enable, default + 32 * 2 * 0:08.0 NB2SB : bit 6 of nbmiscind 0x00 : 0 - disable, default + 32 * 1 * case 0 will be called twice, one is by cpu in hypertransport.c line458, * the other is by rs690. ***********************************************/ void rs690_enable(device_t dev) { device_t nb_dev = 0, sb_dev = 0; int index = -1; u32 i; u32 devfn; u32 deviceid, vendorid; vendorid = pci_read_config32(dev, PCI_VENDOR_ID); deviceid = (vendorid >> 16) & 0xffff; vendorid &= 0xffff; printk_info("rs690_enable VID=0x%x, DID=0x%x\n", vendorid, deviceid); /********************************************************** * Work for bus0, internal GFX located on bus1 and will return after find_nb_dev. **********************************************************/ i = (dev->path.u.pci.devfn) & ~7; for (devfn = 0; devfn <= i; devfn += (1 << 3)) { nb_dev = find_nb_dev(dev, devfn); if (nb_dev) break; } if (!nb_dev) { printk_info("CAN NOT FIND RS690 DEVICE!\n"); return; /* nb_dev is not dev */ } /* sb_dev (dev 8) is a bridge that links to southbridge. */ sb_dev = dev_find_slot(0, PCI_DEVFN(8, 0)); if (!sb_dev) { printk_info("rs690_enable CAN NOT FIND SB bridge, HALT!\n"); for (;;) ; } printk_info("rs690_enable bus0, dev=0x%x\n", (dev->path.u.pci.devfn - devfn) >> 3); switch (dev->path.u.pci.devfn - devfn) { case 0: /* bus0, dev0, fun0; */ printk_info("Bus-0, Dev-0, Fun-0.\n"); enable_pcie_bar3(nb_dev); /* PCIEMiscInit */ config_gpp_core(nb_dev, sb_dev); rs690_gpp_sb_init(nb_dev, sb_dev, 8); /* set SB payload size: 64byte */ set_pcie_enable_bits(nb_dev, 0x10 | PCIE_CORE_INDEX_GPPSB, 3 << 11, 2 << 11); /* Bus0Dev0Fun1Clock control init, we have to do it here, for dev0 Fun1 doesn't have a vendor or device ID */ rs690_config_misc_clk(nb_dev); break; case 1 << 3: /* bus0, dev1 */ printk_info("Bus-0, Dev-1, Fun-0.\n"); break; case 2 << 3: /* bus0, dev2,3, two GFX */ case 3 << 3: printk_info("Bus-0, Dev-2,3, Fun-0. enable=%d\n", dev->enabled); index = (dev->path.u.pci.devfn - devfn) >> 3; set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << index, (dev->enabled ? 0 : 1) << index); if (dev->enabled) rs690_gfx_init(nb_dev, dev, index); break; case 4 << 3: /* bus0, dev4-7, four GPP */ case 5 << 3: case 6 << 3: case 7 << 3: printk_info("Bus-0, Dev-4,5,6,7, Fun-0. enable=%d\n", dev->enabled); index = (dev->path.u.pci.devfn - devfn) >> 3; set_nbmisc_enable_bits(nb_dev, 0x0c, 1 << index, (dev->enabled ? 0 : 1) << index); if (dev->enabled) rs690_gpp_sb_init(nb_dev, dev, index); break; case 8 << 3: /* bus0, dev8, SB */ printk_info("Bus-0, Dev-8, Fun-0. enable=%d\n", dev->enabled); set_nbmisc_enable_bits(nb_dev, 0x00, 1 << 6, (dev->enabled ? 1 : 0) << 6); if (dev->enabled) rs690_gpp_sb_init(nb_dev, dev, index); disable_pcie_bar3(nb_dev); break; default: printk_debug("unknown dev: %s\n", dev_path(dev)); } } struct chip_operations southbridge_amd_rs690_ops = { CHIP_NAME("ATI RS690") .enable_dev = rs690_enable, };