254f47ef98
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Acked-by: Stefan Reinauer <stepan@coresystems.de> git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2987 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
151 lines
5.7 KiB
C
151 lines
5.7 KiB
C
/*
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* This file is part of the LinuxBIOS project.
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*
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* Copyright (C) 2007 Advanced Micro Devices, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <arch/pirq_routing.h>
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#include <console/console.h>
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#include <arch/io.h>
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#include "../../../southbridge/amd/cs5536/cs5536.h"
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/* Platform IRQs */
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#define PIRQA 11
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#define PIRQB 10
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#define PIRQC 11
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#define PIRQD 9
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/* Map */
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#define M_PIRQA (1 << PIRQA) /* Bitmap of supported IRQs */
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#define M_PIRQB (1 << PIRQB) /* Bitmap of supported IRQs */
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#define M_PIRQC (1 << PIRQC) /* Bitmap of supported IRQs */
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#define M_PIRQD (1 << PIRQD) /* Bitmap of supported IRQs */
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/* Link */
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#define L_PIRQA 1 /* Means Slot INTx# Connects To Chipset INTA# */
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#define L_PIRQB 2 /* Means Slot INTx# Connects To Chipset INTB# */
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#define L_PIRQC 3 /* Means Slot INTx# Connects To Chipset INTC# */
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#define L_PIRQD 4 /* Means Slot INTx# Connects To Chipset INTD# */
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/*
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* ALIX1.C interrupt wiring.
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*
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* Devices are:
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*
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* 00:01.0 Host bridge: Advanced Micro Devices [AMD] CS5536 [Geode companion] Host Bridge (rev 31)
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* 00:01.2 Entertainment encryption device: Advanced Micro Devices [AMD] Geode LX AES Security Block
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* 00:0d.0 Ethernet controller: VIA Technologies, Inc. VT6105M [Rhine-III] (rev 96)
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* 00:0e.0 Network controller: Intersil Corporation Prism 2.5 Wavelan chipset (rev 01)
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* 00:0f.0 ISA bridge: Advanced Micro Devices [AMD] CS5536 [Geode companion] ISA (rev 03)
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* 00:0f.2 IDE interface: Advanced Micro Devices [AMD] CS5536 [Geode companion] IDE (rev 01)
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* 00:0f.3 Multimedia audio controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] Audio (rev 01)
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* 00:0f.4 USB Controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] OHC (rev 02)
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* 00:0f.5 USB Controller: Advanced Micro Devices [AMD] CS5536 [Geode companion] EHC (rev 02)
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*
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* The only devices that interrupt are:
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*
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* What Device IRQ PIN PIN WIRED TO
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* -------------------------------------------------
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* AES 00:01.2 0a 01 A A
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* 3VPCI 00:0c.0 0a 01 A A
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* eth0 00:0d.0 0b 01 A B
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* mpci 00:0e.0 0a 01 A A
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* usb 00:0f.3 0b 02 B B
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* usb 00:0f.4 0b 04 D D
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* usb 00:0f.5 0b 04 D D
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*
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* The only swizzled interrupt is eth0, where INTA is wired to interrupt controller line B.
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*/
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const struct irq_routing_table intel_irq_routing_table = {
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PIRQ_SIGNATURE,
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PIRQ_VERSION,
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32 + 16 * IRQ_SLOT_COUNT,/* Max. number of devices on the bus */
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0x00, /* Where the interrupt router lies (bus) */
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(0x0F << 3) | 0x0, /* Where the interrupt router lies (dev) */
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0x00, /* IRQs devoted exclusively to PCI usage */
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0x100B, /* Vendor */
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0x002B, /* Device */
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0, /* Crap (miniport) */
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{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, /* u8 rfu[11] */
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0x00, /* Checksum */
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{
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/* If you change the number of entries, change IRQ_SLOT_COUNT above! */
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/* bus, dev|fn, {link, bitmap}, {link, bitmap}, {link, bitmap}, {link, bitmap}, slot, rfu */
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/* CPU */
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{0x00, (0x01 << 3) | 0x0, {{L_PIRQA, M_PIRQA}, {0x00, 0x00}, {0x00, 0x00}, {0x00, 0x00}}, 0x0, 0x0},
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/* PCI (slot 1) */
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{0x00, (0x0C << 3) | 0x0, {{L_PIRQC, M_PIRQC}, {L_PIRQD, M_PIRQD}, {L_PIRQA, M_PIRQA}, {L_PIRQB, M_PIRQB}}, 0x4, 0x0},
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/* On-board ethernet */
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{0x00, (0x0D << 3) | 0x0, {{L_PIRQB, M_PIRQB}, {0x00, 0x00}, {0x00, 0x00}, {0x00, 0x00}}, 0x0, 0x0},
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/* Mini PCI (slot 2) */
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{0x00, (0x0E << 3) | 0x0, {{L_PIRQA, M_PIRQA}, {L_PIRQB, M_PIRQB}, {L_PIRQC, M_PIRQC}, {L_PIRQD, M_PIRQD}}, 0x1, 0x0},
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/* Chipset slots -- f.3 wires to B, and f.4 and f.5 wires to D. */
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{0x00, (0x0F << 3) | 0x0, {{L_PIRQA, M_PIRQA}, {L_PIRQB, M_PIRQB}, {L_PIRQC, M_PIRQC}, {L_PIRQD, M_PIRQD}}, 0x0, 0x0},
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}
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};
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unsigned long write_pirq_routing_table(unsigned long addr)
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{
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int i, j, k, num_entries;
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unsigned char pirq[4];
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uint16_t chipset_irq_map;
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uint32_t pciAddr, pirtable_end;
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struct irq_routing_table *pirq_tbl;
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pirtable_end = copy_pirq_routing_table(addr);
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/* Set up chipset IRQ steering. */
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pciAddr = 0x80000000 | (CHIPSET_DEV_NUM << 11) | 0x5C;
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chipset_irq_map = (PIRQD << 12 | PIRQC << 8 | PIRQB << 4 | PIRQA);
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printk_debug("%s(%08X, %04X)\n", __FUNCTION__, pciAddr,
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chipset_irq_map);
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outl(pciAddr & ~3, 0xCF8);
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outl(chipset_irq_map, 0xCFC);
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pirq_tbl = (struct irq_routing_table *) (addr);
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num_entries = (pirq_tbl->size - 32) / 16;
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/* Set PCI IRQs. */
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for (i = 0; i < num_entries; i++) {
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printk_debug("PIR Entry %d Dev/Fn: %X Slot: %d\n", i,
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pirq_tbl->slots[i].devfn, pirq_tbl->slots[i].slot);
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for (j = 0; j < 4; j++) {
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printk_debug("INT: %c bitmap: %x ", 'A' + j,
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pirq_tbl->slots[i].irq[j].bitmap);
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/* Finds lsb in bitmap to IRQ#. */
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for (k = 0;
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(!((pirq_tbl->slots[i].irq[j].bitmap >> k) & 1))
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&& (pirq_tbl->slots[i].irq[j].bitmap != 0);
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k++);
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pirq[j] = k;
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printk_debug("PIRQ: %d\n", k);
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}
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/* Bus, device, slots IRQs for {A,B,C,D}. */
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pci_assign_irqs(pirq_tbl->slots[i].bus,
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pirq_tbl->slots[i].devfn >> 3, pirq);
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}
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/* Put the PIR table in memory and checksum. */
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return pirtable_end;
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}
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