| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2016 Damien Zammit <damien@zamaudio.com> |
| * |
| * 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. |
| */ |
| |
| #include <stdint.h> |
| #include <stddef.h> |
| #include <string.h> |
| #include <arch/io.h> |
| #include <device/pci_def.h> |
| #include <device/pnp_def.h> |
| #include <console/console.h> |
| |
| #include "iomap.h" |
| #include "x4x.h" |
| |
| #define DEFAULT_RCBA 0xfed1c000 |
| #define RCBA8(x) *((volatile u8 *)(DEFAULT_RCBA + x)) |
| #define RCBA16(x) *((volatile u16 *)(DEFAULT_RCBA + x)) |
| #define RCBA32(x) *((volatile u32 *)(DEFAULT_RCBA + x)) |
| |
| static void init_egress(void) |
| { |
| u32 reg32; |
| |
| /* VC0: TC0 only */ |
| EPBAR8(0x14) = 1; |
| EPBAR8(0x4) = 1; |
| |
| switch (MCHBAR32(0xc00) & 0x7) { |
| case 0x0: |
| /* FSB 1066 */ |
| EPBAR32(0x2c) = 0x0001a6db; |
| break; |
| case 0x2: |
| /* FSB 800 */ |
| EPBAR32(0x2c) = 0x00014514; |
| break; |
| default: |
| case 0x4: |
| /* FSB 1333 */ |
| EPBAR32(0x2c) = 0x00022861; |
| break; |
| } |
| EPBAR32(0x28) = 0x0a0a0a0a; |
| EPBAR8(0xc) = (EPBAR8(0xc) & ~0xe) | 2; |
| EPBAR32(0x1c) = (EPBAR32(0x1c) & ~0x7f0000) | 0x0a0000; |
| MCHBAR8(0x3c) = MCHBAR8(0x3c) | 0x7; |
| |
| /* VC1: ID1, TC7 */ |
| reg32 = (EPBAR32(0x20) & ~(7 << 24)) | (1 << 24); |
| reg32 = (reg32 & ~0xfe) | (1 << 7); |
| EPBAR32(0x20) = reg32; |
| |
| /* Init VC1 port arbitration table */ |
| EPBAR32(0x100) = 0x001000001; |
| EPBAR32(0x104) = 0x000040000; |
| EPBAR32(0x108) = 0x000001000; |
| EPBAR32(0x10c) = 0x000000040; |
| EPBAR32(0x110) = 0x001000001; |
| EPBAR32(0x114) = 0x000040000; |
| EPBAR32(0x118) = 0x000001000; |
| EPBAR32(0x11c) = 0x000000040; |
| |
| /* Load table */ |
| reg32 = EPBAR32(0x20) | (1 << 16); |
| EPBAR32(0x20) = reg32; |
| asm("nop"); |
| EPBAR32(0x20) = reg32; |
| |
| /* Wait for table load */ |
| while ((EPBAR8(0x26) & (1 << 0)) != 0); |
| |
| /* VC1: enable */ |
| EPBAR32(0x20) |= 1 << 31; |
| |
| /* Wait for VC1 */ |
| while ((EPBAR8(0x26) & (1 << 1)) != 0); |
| |
| printk(BIOS_DEBUG, "Done Egress Port\n"); |
| } |
| |
| static void init_dmi(void) |
| { |
| u32 reg32; |
| u16 reg16; |
| |
| /* Assume IGD present */ |
| |
| /* Clear error status */ |
| DMIBAR32(0x1c4) = 0xffffffff; |
| DMIBAR32(0x1d0) = 0xffffffff; |
| |
| /* VC0: TC0 only */ |
| DMIBAR8(DMIVC0RCTL) = 1; |
| DMIBAR8(0x4) = 1; |
| |
| /* VC1: ID1, TC7 */ |
| reg32 = (DMIBAR32(DMIVC1RCTL) & ~(7 << 24)) | (1 << 24); |
| reg32 = (reg32 & ~0xff) | 1 << 7; |
| |
| /* VC1: enable */ |
| reg32 |= 1 << 31; |
| reg32 = (reg32 & ~(0x7 << 17)) | (0x4 << 17); |
| |
| DMIBAR32(DMIVC1RCTL) = reg32; |
| |
| /* Set up VCs in southbridge RCBA */ |
| RCBA8(0x3022) &= ~1; |
| |
| reg32 = (0x5 << 28) | (1 << 6); /* PCIe x4 */ |
| RCBA32(0x2020) = (RCBA32(0x2020) & ~((0xf << 28) | (0x7 << 6))) | reg32; |
| |
| /* Assign VC1 id 1 */ |
| RCBA32(0x20) = (RCBA32(0x20) & ~(0x7 << 24)) | (1 << 24); |
| |
| /* Map TC7 to VC1 */ |
| RCBA8(0x20) &= 1; |
| RCBA8(0x20) |= 1 << 7; |
| |
| /* Map TC0 to VC0 */ |
| RCBA8(0x14) &= 1; |
| |
| /* Init DMI VC1 port arbitration table */ |
| RCBA32(0x20) &= 0xfff1ffff; |
| RCBA32(0x20) |= 1 << 19; |
| |
| RCBA32(0x30) = 0x0000000f; |
| RCBA32(0x34) = 0x000f0000; |
| RCBA32(0x38) = 0; |
| RCBA32(0x3c) = 0x000000f0; |
| RCBA32(0x40) = 0x0f000000; |
| RCBA32(0x44) = 0; |
| RCBA32(0x48) = 0x0000f000; |
| RCBA32(0x4c) = 0; |
| RCBA32(0x50) = 0x0000000f; |
| RCBA32(0x54) = 0x000f0000; |
| RCBA32(0x58) = 0; |
| RCBA32(0x5c) = 0x000000f0; |
| RCBA32(0x60) = 0x0f000000; |
| RCBA32(0x64) = 0; |
| RCBA32(0x68) = 0x0000f000; |
| RCBA32(0x6c) = 0; |
| |
| RCBA32(0x20) |= 1 << 16; |
| |
| /* Enable VC1 */ |
| RCBA32(0x20) |= 1 << 31; |
| |
| /* Wait for VC1 */ |
| while ((RCBA8(0x26) & (1 << 1)) != 0); |
| |
| /* Wait for table load */ |
| while ((RCBA8(0x26) & (1 << 0)) != 0); |
| |
| /* ASPM on DMI link */ |
| RCBA16(0x1a8) &= ~0x3; |
| reg16 = RCBA16(0x1a8); |
| RCBA32(0x2010) = (RCBA32(0x2010) & ~(0x3 << 10)) | (1 << 10); |
| reg32 = RCBA32(0x2010); |
| |
| /* Set up VC1 max time */ |
| RCBA32(0x1c) = (RCBA32(0x1c) & ~0x7f0000) | 0x120000; |
| |
| while ((DMIBAR32(0x26) & (1 << 1)) != 0); |
| printk(BIOS_DEBUG, "Done DMI setup\n"); |
| |
| /* ASPM on DMI */ |
| DMIBAR32(0x200) &= ~(0x3 << 26); |
| DMIBAR16(0x210) = (DMIBAR16(0x210) & ~(0xff7)) | 0x101; |
| DMIBAR32(0x88) &= ~0x3; |
| DMIBAR32(0x88) |= 0x3; |
| reg16 = DMIBAR16(0x88); |
| } |
| |
| void x4x_late_init(void) |
| { |
| init_egress(); |
| init_dmi(); |
| } |