| /* |
| * This file is part of the LinuxBIOS project. |
| * |
| * Copyright (C) 2007 Advanced Micro Devices |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| * |
| * 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 <arch/pirq_routing.h> |
| #include <console/console.h> |
| #include <arch/io.h> |
| #include <arch/pirq_routing.h> |
| #include "../../../southbridge/amd/cs5536/cs5536.h" |
| |
| /* Platform IRQs */ |
| #define PIRQA 11 |
| #define PIRQB 5 |
| #define PIRQC 10 |
| #define PIRQD 10 |
| |
| /* Map */ |
| #define M_PIRQA (1 << PIRQA) /* Bitmap of supported IRQs */ |
| #define M_PIRQB (1 << PIRQB) /* Bitmap of supported IRQs */ |
| #define M_PIRQC (1 << PIRQC) /* Bitmap of supported IRQs */ |
| #define M_PIRQD (1 << PIRQD) /* Bitmap of supported IRQs */ |
| |
| /* Link */ |
| #define L_PIRQA 1 /* Means Slot INTx# Connects To Chipset INTA# */ |
| #define L_PIRQB 2 /* Means Slot INTx# Connects To Chipset INTB# */ |
| #define L_PIRQC 3 /* Means Slot INTx# Connects To Chipset INTC# */ |
| #define L_PIRQD 4 /* Means Slot INTx# Connects To Chipset INTD# */ |
| |
| const struct irq_routing_table intel_irq_routing_table = { |
| PIRQ_SIGNATURE, /* u32 signature */ |
| PIRQ_VERSION, /* u16 version */ |
| 32+16*IRQ_SLOT_COUNT, /* there can be total 6 devices on the bus */ |
| 0x00, /* Where the interrupt router lies (bus) */ |
| (0x0F<<3)|0x0, /* Where the interrupt router lies (dev) */ |
| 0x00, /* IRQs devoted exclusively to PCI usage */ |
| 0x100B, /* Vendor */ |
| 0x002B, /* Device */ |
| 0, /* Crap (miniport) */ |
| { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, /* u8 rfu[11] */ |
| 0x00, /* u8 checksum , this has to set to some value that would give 0 after the sum of all bytes for this structure (including checksum) */ |
| { |
| /* If you change the number of entries, change the IRQ_SLOT_COUNT above! */ |
| /* bus, dev|fn, {link, bitmap}, {link, bitmap}, {link, bitmap}, {link, bitmap}, slot, rfu */ |
| {0x00,(0x01<<3)|0x0, {{L_PIRQA, M_PIRQA}, {0x00, 0x00}, {0x00, 0x00}, {0x00, 0x00}}, 0x0, 0x0}, /* cpu */ |
| {0x00,(0x0F<<3)|0x0, {{L_PIRQA, M_PIRQA}, {L_PIRQB, M_PIRQB}, {L_PIRQC, M_PIRQC}, {L_PIRQD, M_PIRQD}}, 0x0, 0x0}, /* chipset */ |
| {0x00,(0x0D<<3)|0x0, {{L_PIRQB, M_PIRQB}, {L_PIRQC, M_PIRQC}, {L_PIRQD, M_PIRQD}, {L_PIRQA, M_PIRQA}}, 0x1, 0x0}, /* slot1 */ |
| {0x00,(0x0E<<3)|0x0, {{L_PIRQC, M_PIRQC}, {L_PIRQD, M_PIRQD}, {L_PIRQA, M_PIRQA}, {L_PIRQB, M_PIRQB}}, 0x2, 0x0}, /* slot2 */ |
| {0x00,(0x0B<<3)|0x0, {{L_PIRQD, M_PIRQD}, {L_PIRQA, M_PIRQA}, {L_PIRQB, M_PIRQB}, {L_PIRQC, M_PIRQC}}, 0x3, 0x0}, /* slot3 */ |
| {0x00,(0x0C<<3)|0x0, {{L_PIRQA, M_PIRQA}, {L_PIRQB, M_PIRQB}, {L_PIRQC, M_PIRQC}, {L_PIRQD, M_PIRQD}}, 0x4, 0x0}, /* slot4 */ |
| } |
| }; |
| |
| |
| unsigned long write_pirq_routing_table(unsigned long addr){ |
| int i, j, k, num_entries; |
| unsigned char pirq[4]; |
| uint16_t chipset_irq_map; |
| uint32_t pciAddr, pirtable_end; |
| struct irq_routing_table *pirq_tbl; |
| |
| pirtable_end = copy_pirq_routing_table(addr); |
| |
| /* Set up chipset IRQ steering */ |
| pciAddr = 0x80000000 | (CHIPSET_DEV_NUM << 11) | 0x5C; |
| chipset_irq_map = (PIRQD << 12 | PIRQC << 8 | PIRQB << 4 | PIRQA); |
| printk_debug("%s(%08X, %04X)\n", __FUNCTION__, pciAddr, chipset_irq_map); |
| outl(pciAddr & ~3, 0xCF8); |
| outl(chipset_irq_map, 0xCFC); |
| |
| pirq_tbl = (struct irq_routing_table *)(addr); |
| num_entries = (pirq_tbl->size - 32)/16; |
| |
| /* Set PCI IRQs */ |
| for (i=0; i < num_entries; i++){ |
| printk_debug("PIR Entry %d Dev/Fn: %X Slot: %d\n", i, pirq_tbl->slots[i].devfn, pirq_tbl->slots[i].slot); |
| for (j = 0; j < 4; j++){ |
| printk_debug("INT: %c bitmap: %x ", 'A'+j, pirq_tbl->slots[i].irq[j].bitmap); |
| for (k = 0; (!((pirq_tbl->slots[i].irq[j].bitmap >> k) & 1)) && (pirq_tbl->slots[i].irq[j].bitmap != 0); k++); /* finds lsb in bitmap to IRQ# */ |
| pirq[j] = k; |
| printk_debug("PIRQ: %d\n", k); |
| } |
| pci_assign_irqs(pirq_tbl->slots[i].bus, |
| pirq_tbl->slots[i].devfn >> 3, pirq); /* bus, device, slots IRQs for {A,B,C,D} */ |
| } |
| |
| /* put the PIR table in memory and checksum */ |
| return pirtable_end; |
| } |