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/*
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* QEMU ICH9 Emulation
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*
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* Copyright (c) 2006 Fabrice Bellard
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* Copyright (c) 2009, 2010, 2011
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* Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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* Copyright (C) 2012 Jason Baron <jbaron@redhat.com>
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*
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* This is based on piix_pci.c, but heavily modified.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "qemu-common.h" |
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#include "hw.h" |
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#include "qemu/range.h" |
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#include "isa.h" |
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#include "sysbus.h" |
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#include "pc.h" |
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#include "apm.h" |
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#include "ioapic.h" |
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#include "pci/pci.h" |
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#include "pci/pcie_host.h" |
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#include "pci/pci_bridge.h" |
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#include "ich9.h" |
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#include "acpi.h" |
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#include "acpi_ich9.h" |
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#include "pam.h" |
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#include "pci/pci_bus.h" |
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#include "exec/address-spaces.h" |
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#include "sysemu.h" |
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static int ich9_lpc_sci_irq(ICH9LPCState *lpc); |
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/*****************************************************************************/
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/* ICH9 LPC PCI to ISA bridge */
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static void ich9_lpc_reset(DeviceState *qdev); |
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/* chipset configuration register
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* to access chipset configuration registers, pci_[sg]et_{byte, word, long}
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* are used.
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* Although it's not pci configuration space, it's little endian as Intel.
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*/
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static void ich9_cc_update_ir(uint8_t irr[PCI_NUM_PINS], uint16_t ir) |
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{ |
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int intx;
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for (intx = 0; intx < PCI_NUM_PINS; intx++) { |
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irr[intx] = (ir >> (intx * ICH9_CC_DIR_SHIFT)) & ICH9_CC_DIR_MASK; |
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} |
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} |
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|
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static void ich9_cc_update(ICH9LPCState *lpc) |
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{ |
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int slot;
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int pci_intx;
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|
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const int reg_offsets[] = { |
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ICH9_CC_D25IR, |
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ICH9_CC_D26IR, |
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ICH9_CC_D27IR, |
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ICH9_CC_D28IR, |
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ICH9_CC_D29IR, |
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ICH9_CC_D30IR, |
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ICH9_CC_D31IR, |
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}; |
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const int *offset; |
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/* D{25 - 31}IR, but D30IR is read only to 0. */
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for (slot = 25, offset = reg_offsets; slot < 32; slot++, offset++) { |
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if (slot == 30) { |
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continue;
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} |
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ich9_cc_update_ir(lpc->irr[slot], |
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pci_get_word(lpc->chip_config + *offset)); |
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} |
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|
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/*
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* D30: DMI2PCI bridge
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* It is arbitrarily decided how INTx lines of PCI devicesbehind the bridge
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* are connected to pirq lines. Our choice is PIRQ[E-H].
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* INT[A-D] are connected to PIRQ[E-H]
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*/
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for (pci_intx = 0; pci_intx < PCI_NUM_PINS; pci_intx++) { |
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lpc->irr[30][pci_intx] = pci_intx + 4; |
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} |
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} |
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static void ich9_cc_init(ICH9LPCState *lpc) |
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{ |
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int slot;
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int intx;
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/* the default irq routing is arbitrary as long as it matches with
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* acpi irq routing table.
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* The one that is incompatible with piix_pci(= bochs) one is
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* intentionally chosen to let the users know that the different
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* board is used.
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*
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* int[A-D] -> pirq[E-F]
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* avoid pirq A-D because they are used for pci express port
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*/
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for (slot = 0; slot < PCI_SLOT_MAX; slot++) { |
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for (intx = 0; intx < PCI_NUM_PINS; intx++) { |
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lpc->irr[slot][intx] = (slot + intx) % 4 + 4; |
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} |
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} |
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ich9_cc_update(lpc); |
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} |
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static void ich9_cc_reset(ICH9LPCState *lpc) |
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{ |
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uint8_t *c = lpc->chip_config; |
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memset(lpc->chip_config, 0, sizeof(lpc->chip_config)); |
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pci_set_long(c + ICH9_CC_D31IR, ICH9_CC_DIR_DEFAULT); |
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pci_set_long(c + ICH9_CC_D30IR, ICH9_CC_D30IR_DEFAULT); |
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pci_set_long(c + ICH9_CC_D29IR, ICH9_CC_DIR_DEFAULT); |
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pci_set_long(c + ICH9_CC_D28IR, ICH9_CC_DIR_DEFAULT); |
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pci_set_long(c + ICH9_CC_D27IR, ICH9_CC_DIR_DEFAULT); |
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pci_set_long(c + ICH9_CC_D26IR, ICH9_CC_DIR_DEFAULT); |
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pci_set_long(c + ICH9_CC_D25IR, ICH9_CC_DIR_DEFAULT); |
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ich9_cc_update(lpc); |
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} |
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static void ich9_cc_addr_len(uint64_t *addr, unsigned *len) |
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{ |
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*addr &= ICH9_CC_ADDR_MASK; |
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if (*addr + *len >= ICH9_CC_SIZE) {
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*len = ICH9_CC_SIZE - *addr; |
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} |
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} |
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/* val: little endian */
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static void ich9_cc_write(void *opaque, hwaddr addr, |
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uint64_t val, unsigned len)
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{ |
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ICH9LPCState *lpc = (ICH9LPCState *)opaque; |
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ich9_cc_addr_len(&addr, &len); |
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memcpy(lpc->chip_config + addr, &val, len); |
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ich9_cc_update(lpc); |
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} |
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/* return value: little endian */
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static uint64_t ich9_cc_read(void *opaque, hwaddr addr, |
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unsigned len)
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{ |
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ICH9LPCState *lpc = (ICH9LPCState *)opaque; |
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uint32_t val = 0;
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ich9_cc_addr_len(&addr, &len); |
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memcpy(&val, lpc->chip_config + addr, len); |
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return val;
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} |
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/* IRQ routing */
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/* */
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static void ich9_lpc_rout(uint8_t pirq_rout, int *pic_irq, int *pic_dis) |
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{ |
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*pic_irq = pirq_rout & ICH9_LPC_PIRQ_ROUT_MASK; |
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*pic_dis = pirq_rout & ICH9_LPC_PIRQ_ROUT_IRQEN; |
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} |
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static void ich9_lpc_pic_irq(ICH9LPCState *lpc, int pirq_num, |
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int *pic_irq, int *pic_dis) |
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{ |
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switch (pirq_num) {
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case 0 ... 3: /* A-D */ |
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ich9_lpc_rout(lpc->d.config[ICH9_LPC_PIRQA_ROUT + pirq_num], |
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pic_irq, pic_dis); |
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return;
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case 4 ... 7: /* E-H */ |
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ich9_lpc_rout(lpc->d.config[ICH9_LPC_PIRQE_ROUT + (pirq_num - 4)],
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pic_irq, pic_dis); |
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return;
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default:
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break;
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} |
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abort(); |
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} |
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/* pic_irq: i8254 irq 0-15 */
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static void ich9_lpc_update_pic(ICH9LPCState *lpc, int pic_irq) |
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{ |
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int i, pic_level;
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/* The pic level is the logical OR of all the PCI irqs mapped to it */
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pic_level = 0;
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for (i = 0; i < ICH9_LPC_NB_PIRQS; i++) { |
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int tmp_irq;
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int tmp_dis;
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ich9_lpc_pic_irq(lpc, i, &tmp_irq, &tmp_dis); |
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if (!tmp_dis && pic_irq == tmp_irq) {
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pic_level |= pci_bus_get_irq_level(lpc->d.bus, i); |
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} |
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} |
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if (pic_irq == ich9_lpc_sci_irq(lpc)) {
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pic_level |= lpc->sci_level; |
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} |
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qemu_set_irq(lpc->pic[pic_irq], pic_level); |
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} |
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/* pirq: pirq[A-H] 0-7*/
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static void ich9_lpc_update_by_pirq(ICH9LPCState *lpc, int pirq) |
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{ |
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int pic_irq;
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int pic_dis;
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ich9_lpc_pic_irq(lpc, pirq, &pic_irq, &pic_dis); |
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assert(pic_irq < ICH9_LPC_PIC_NUM_PINS); |
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if (pic_dis) {
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return;
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} |
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ich9_lpc_update_pic(lpc, pic_irq); |
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} |
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/* APIC mode: GSIx: PIRQ[A-H] -> GSI 16, ... no pirq shares same APIC pins. */
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static int ich9_pirq_to_gsi(int pirq) |
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{ |
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return pirq + ICH9_LPC_PIC_NUM_PINS;
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} |
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static int ich9_gsi_to_pirq(int gsi) |
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{ |
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return gsi - ICH9_LPC_PIC_NUM_PINS;
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} |
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static void ich9_lpc_update_apic(ICH9LPCState *lpc, int gsi) |
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{ |
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int level = 0; |
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|
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if (gsi >= ICH9_LPC_PIC_NUM_PINS) {
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level |= pci_bus_get_irq_level(lpc->d.bus, ich9_gsi_to_pirq(gsi)); |
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} |
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if (gsi == ich9_lpc_sci_irq(lpc)) {
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level |= lpc->sci_level; |
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} |
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|
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qemu_set_irq(lpc->ioapic[gsi], level); |
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} |
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|
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void ich9_lpc_set_irq(void *opaque, int pirq, int level) |
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{ |
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ICH9LPCState *lpc = opaque; |
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|
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assert(0 <= pirq);
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assert(pirq < ICH9_LPC_NB_PIRQS); |
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ich9_lpc_update_apic(lpc, ich9_pirq_to_gsi(pirq)); |
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ich9_lpc_update_by_pirq(lpc, pirq); |
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} |
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/* return the pirq number (PIRQ[A-H]:0-7) corresponding to
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* a given device irq pin.
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*/
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int ich9_lpc_map_irq(PCIDevice *pci_dev, int intx) |
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{ |
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BusState *bus = qdev_get_parent_bus(&pci_dev->qdev); |
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PCIBus *pci_bus = PCI_BUS(bus); |
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PCIDevice *lpc_pdev = |
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pci_bus->devices[PCI_DEVFN(ICH9_LPC_DEV, ICH9_LPC_FUNC)]; |
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ICH9LPCState *lpc = ICH9_LPC_DEVICE(lpc_pdev); |
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return lpc->irr[PCI_SLOT(pci_dev->devfn)][intx];
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} |
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static int ich9_lpc_sci_irq(ICH9LPCState *lpc) |
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{ |
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switch (lpc->d.config[ICH9_LPC_ACPI_CTRL] &
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ICH9_LPC_ACPI_CTRL_SCI_IRQ_SEL_MASK) { |
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case ICH9_LPC_ACPI_CTRL_9:
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return 9; |
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case ICH9_LPC_ACPI_CTRL_10:
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return 10; |
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case ICH9_LPC_ACPI_CTRL_11:
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return 11; |
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case ICH9_LPC_ACPI_CTRL_20:
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return 20; |
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case ICH9_LPC_ACPI_CTRL_21:
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return 21; |
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default:
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/* reserved */
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break;
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} |
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return -1; |
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} |
309 |
|
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static void ich9_set_sci(void *opaque, int irq_num, int level) |
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{ |
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ICH9LPCState *lpc = opaque; |
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int irq;
|
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|
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assert(irq_num == 0);
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level = !!level; |
317 |
if (level == lpc->sci_level) {
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return;
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} |
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lpc->sci_level = level; |
321 |
|
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irq = ich9_lpc_sci_irq(lpc); |
323 |
if (irq < 0) { |
324 |
return;
|
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} |
326 |
|
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ich9_lpc_update_apic(lpc, irq); |
328 |
if (irq < ICH9_LPC_PIC_NUM_PINS) {
|
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ich9_lpc_update_pic(lpc, irq); |
330 |
} |
331 |
} |
332 |
|
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void ich9_lpc_pm_init(PCIDevice *lpc_pci, qemu_irq cmos_s3)
|
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{ |
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ICH9LPCState *lpc = ICH9_LPC_DEVICE(lpc_pci); |
336 |
qemu_irq *sci_irq; |
337 |
|
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sci_irq = qemu_allocate_irqs(ich9_set_sci, lpc, 1);
|
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ich9_pm_init(&lpc->pm, sci_irq[0], cmos_s3);
|
340 |
|
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ich9_lpc_reset(&lpc->d.qdev); |
342 |
} |
343 |
|
344 |
/* APM */
|
345 |
|
346 |
static void ich9_apm_ctrl_changed(uint32_t val, void *arg) |
347 |
{ |
348 |
ICH9LPCState *lpc = arg; |
349 |
|
350 |
/* ACPI specs 3.0, 4.7.2.5 */
|
351 |
acpi_pm1_cnt_update(&lpc->pm.acpi_regs, |
352 |
val == ICH9_APM_ACPI_ENABLE, |
353 |
val == ICH9_APM_ACPI_DISABLE); |
354 |
|
355 |
/* SMI_EN = PMBASE + 30. SMI control and enable register */
|
356 |
if (lpc->pm.smi_en & ICH9_PMIO_SMI_EN_APMC_EN) {
|
357 |
cpu_interrupt(first_cpu, CPU_INTERRUPT_SMI); |
358 |
} |
359 |
} |
360 |
|
361 |
/* config:PMBASE */
|
362 |
static void |
363 |
ich9_lpc_pmbase_update(ICH9LPCState *lpc) |
364 |
{ |
365 |
uint32_t pm_io_base = pci_get_long(lpc->d.config + ICH9_LPC_PMBASE); |
366 |
pm_io_base &= ICH9_LPC_PMBASE_BASE_ADDRESS_MASK; |
367 |
|
368 |
ich9_pm_iospace_update(&lpc->pm, pm_io_base); |
369 |
} |
370 |
|
371 |
/* config:RBCA */
|
372 |
static void ich9_lpc_rcba_update(ICH9LPCState *lpc, uint32_t rbca_old) |
373 |
{ |
374 |
uint32_t rbca = pci_get_long(lpc->d.config + ICH9_LPC_RCBA); |
375 |
|
376 |
if (rbca_old & ICH9_LPC_RCBA_EN) {
|
377 |
memory_region_del_subregion(get_system_memory(), &lpc->rbca_mem); |
378 |
} |
379 |
if (rbca & ICH9_LPC_RCBA_EN) {
|
380 |
memory_region_add_subregion_overlap(get_system_memory(), |
381 |
rbca & ICH9_LPC_RCBA_BA_MASK, |
382 |
&lpc->rbca_mem, 1);
|
383 |
} |
384 |
} |
385 |
|
386 |
static int ich9_lpc_post_load(void *opaque, int version_id) |
387 |
{ |
388 |
ICH9LPCState *lpc = opaque; |
389 |
|
390 |
ich9_lpc_pmbase_update(lpc); |
391 |
ich9_lpc_rcba_update(lpc, 0 /* disabled ICH9_LPC_RBCA_EN */); |
392 |
return 0; |
393 |
} |
394 |
|
395 |
static void ich9_lpc_config_write(PCIDevice *d, |
396 |
uint32_t addr, uint32_t val, int len)
|
397 |
{ |
398 |
ICH9LPCState *lpc = ICH9_LPC_DEVICE(d); |
399 |
uint32_t rbca_old = pci_get_long(d->config + ICH9_LPC_RCBA); |
400 |
|
401 |
pci_default_write_config(d, addr, val, len); |
402 |
if (ranges_overlap(addr, len, ICH9_LPC_PMBASE, 4)) { |
403 |
ich9_lpc_pmbase_update(lpc); |
404 |
} |
405 |
if (ranges_overlap(addr, len, ICH9_LPC_RCBA, 4)) { |
406 |
ich9_lpc_rcba_update(lpc, rbca_old); |
407 |
} |
408 |
} |
409 |
|
410 |
static void ich9_lpc_reset(DeviceState *qdev) |
411 |
{ |
412 |
PCIDevice *d = PCI_DEVICE(qdev); |
413 |
ICH9LPCState *lpc = ICH9_LPC_DEVICE(d); |
414 |
uint32_t rbca_old = pci_get_long(d->config + ICH9_LPC_RCBA); |
415 |
int i;
|
416 |
|
417 |
for (i = 0; i < 4; i++) { |
418 |
pci_set_byte(d->config + ICH9_LPC_PIRQA_ROUT + i, |
419 |
ICH9_LPC_PIRQ_ROUT_DEFAULT); |
420 |
} |
421 |
for (i = 0; i < 4; i++) { |
422 |
pci_set_byte(d->config + ICH9_LPC_PIRQE_ROUT + i, |
423 |
ICH9_LPC_PIRQ_ROUT_DEFAULT); |
424 |
} |
425 |
pci_set_byte(d->config + ICH9_LPC_ACPI_CTRL, ICH9_LPC_ACPI_CTRL_DEFAULT); |
426 |
|
427 |
pci_set_long(d->config + ICH9_LPC_PMBASE, ICH9_LPC_PMBASE_DEFAULT); |
428 |
pci_set_long(d->config + ICH9_LPC_RCBA, ICH9_LPC_RCBA_DEFAULT); |
429 |
|
430 |
ich9_cc_reset(lpc); |
431 |
|
432 |
ich9_lpc_pmbase_update(lpc); |
433 |
ich9_lpc_rcba_update(lpc, rbca_old); |
434 |
|
435 |
lpc->sci_level = 0;
|
436 |
} |
437 |
|
438 |
static const MemoryRegionOps rbca_mmio_ops = { |
439 |
.read = ich9_cc_read, |
440 |
.write = ich9_cc_write, |
441 |
.endianness = DEVICE_LITTLE_ENDIAN, |
442 |
}; |
443 |
|
444 |
static void ich9_lpc_machine_ready(Notifier *n, void *opaque) |
445 |
{ |
446 |
ICH9LPCState *s = container_of(n, ICH9LPCState, machine_ready); |
447 |
uint8_t *pci_conf; |
448 |
|
449 |
pci_conf = s->d.config; |
450 |
if (isa_is_ioport_assigned(0x3f8)) { |
451 |
/* com1 */
|
452 |
pci_conf[0x82] |= 0x01; |
453 |
} |
454 |
if (isa_is_ioport_assigned(0x2f8)) { |
455 |
/* com2 */
|
456 |
pci_conf[0x82] |= 0x02; |
457 |
} |
458 |
if (isa_is_ioport_assigned(0x378)) { |
459 |
/* lpt */
|
460 |
pci_conf[0x82] |= 0x04; |
461 |
} |
462 |
if (isa_is_ioport_assigned(0x3f0)) { |
463 |
/* floppy */
|
464 |
pci_conf[0x82] |= 0x08; |
465 |
} |
466 |
} |
467 |
|
468 |
static int ich9_lpc_initfn(PCIDevice *d) |
469 |
{ |
470 |
ICH9LPCState *lpc = ICH9_LPC_DEVICE(d); |
471 |
ISABus *isa_bus; |
472 |
|
473 |
isa_bus = isa_bus_new(&d->qdev, get_system_io()); |
474 |
|
475 |
pci_set_long(d->wmask + ICH9_LPC_PMBASE, |
476 |
ICH9_LPC_PMBASE_BASE_ADDRESS_MASK); |
477 |
|
478 |
memory_region_init_io(&lpc->rbca_mem, &rbca_mmio_ops, lpc, |
479 |
"lpc-rbca-mmio", ICH9_CC_SIZE);
|
480 |
|
481 |
lpc->isa_bus = isa_bus; |
482 |
|
483 |
ich9_cc_init(lpc); |
484 |
apm_init(d, &lpc->apm, ich9_apm_ctrl_changed, lpc); |
485 |
|
486 |
lpc->machine_ready.notify = ich9_lpc_machine_ready; |
487 |
qemu_add_machine_init_done_notifier(&lpc->machine_ready); |
488 |
|
489 |
return 0; |
490 |
} |
491 |
|
492 |
static const VMStateDescription vmstate_ich9_lpc = { |
493 |
.name = "ICH9LPC",
|
494 |
.version_id = 1,
|
495 |
.minimum_version_id = 1,
|
496 |
.minimum_version_id_old = 1,
|
497 |
.post_load = ich9_lpc_post_load, |
498 |
.fields = (VMStateField[]) { |
499 |
VMSTATE_PCI_DEVICE(d, ICH9LPCState), |
500 |
VMSTATE_STRUCT(apm, ICH9LPCState, 0, vmstate_apm, APMState),
|
501 |
VMSTATE_STRUCT(pm, ICH9LPCState, 0, vmstate_ich9_pm, ICH9LPCPMRegs),
|
502 |
VMSTATE_UINT8_ARRAY(chip_config, ICH9LPCState, ICH9_CC_SIZE), |
503 |
VMSTATE_UINT32(sci_level, ICH9LPCState), |
504 |
VMSTATE_END_OF_LIST() |
505 |
} |
506 |
}; |
507 |
|
508 |
static void ich9_lpc_class_init(ObjectClass *klass, void *data) |
509 |
{ |
510 |
DeviceClass *dc = DEVICE_CLASS(klass); |
511 |
PCIDeviceClass *k = PCI_DEVICE_CLASS(klass); |
512 |
|
513 |
dc->reset = ich9_lpc_reset; |
514 |
k->init = ich9_lpc_initfn; |
515 |
dc->vmsd = &vmstate_ich9_lpc; |
516 |
dc->no_user = 1;
|
517 |
k->config_write = ich9_lpc_config_write; |
518 |
dc->desc = "ICH9 LPC bridge";
|
519 |
k->vendor_id = PCI_VENDOR_ID_INTEL; |
520 |
k->device_id = PCI_DEVICE_ID_INTEL_ICH9_8; |
521 |
k->revision = ICH9_A2_LPC_REVISION; |
522 |
k->class_id = PCI_CLASS_BRIDGE_ISA; |
523 |
|
524 |
} |
525 |
|
526 |
static const TypeInfo ich9_lpc_info = { |
527 |
.name = TYPE_ICH9_LPC_DEVICE, |
528 |
.parent = TYPE_PCI_DEVICE, |
529 |
.instance_size = sizeof(struct ICH9LPCState), |
530 |
.class_init = ich9_lpc_class_init, |
531 |
}; |
532 |
|
533 |
static void ich9_lpc_register(void) |
534 |
{ |
535 |
type_register_static(&ich9_lpc_info); |
536 |
} |
537 |
|
538 |
type_init(ich9_lpc_register); |