pcie port: define struct PCIEPort/PCIESlot and helper functions
define struct PCIEPort which represents common part of pci express port.(root, upstream and downstream.) add a helper function for pcie port which can be used commonly by root/upstream/downstream port. define struct PCIESlot which represents common part of pcie slot.(root and downstream.) and helper functions for it. helper functions for chassis, slot -> PCIESlot conversion. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -186,7 +186,7 @@ hw-obj-$(CONFIG_PIIX4) += piix4.o
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# PCI watchdog devices
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# PCI watchdog devices
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hw-obj-y += wdt_i6300esb.o
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hw-obj-y += wdt_i6300esb.o
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hw-obj-y += pcie.o
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hw-obj-y += pcie.o pcie_port.o
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hw-obj-y += msix.o msi.o
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hw-obj-y += msix.o msi.o
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# PCI network cards
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# PCI network cards
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@ -0,0 +1,116 @@
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/*
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* pcie_port.c
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*
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* Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "pcie_port.h"
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void pcie_port_init_reg(PCIDevice *d)
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{
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/* Unlike pci bridge,
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66MHz and fast back to back don't apply to pci express port. */
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pci_set_word(d->config + PCI_STATUS, 0);
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pci_set_word(d->config + PCI_SEC_STATUS, 0);
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/* 7.5.3.5 Prefetchable Memory Base Limit
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* The Prefetchable Memory Base and Prefetchable Memory Limit registers
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* must indicate that 64-bit addresses are supported, as defined in
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* PCI-to-PCI Bridge Architecture Specification, Revision 1.2.
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*/
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pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_BASE,
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PCI_PREF_RANGE_TYPE_64);
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pci_word_test_and_set_mask(d->config + PCI_PREF_MEMORY_LIMIT,
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PCI_PREF_RANGE_TYPE_64);
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}
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/**************************************************************************
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* (chassis number, pcie physical slot number) -> pcie slot conversion
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*/
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struct PCIEChassis {
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uint8_t number;
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QLIST_HEAD(, PCIESlot) slots;
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QLIST_ENTRY(PCIEChassis) next;
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};
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static QLIST_HEAD(, PCIEChassis) chassis = QLIST_HEAD_INITIALIZER(chassis);
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static struct PCIEChassis *pcie_chassis_find(uint8_t chassis_number)
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{
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struct PCIEChassis *c;
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QLIST_FOREACH(c, &chassis, next) {
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if (c->number == chassis_number) {
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break;
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}
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}
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return c;
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}
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void pcie_chassis_create(uint8_t chassis_number)
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{
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struct PCIEChassis *c;
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c = pcie_chassis_find(chassis_number);
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if (c) {
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return;
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}
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c = qemu_mallocz(sizeof(*c));
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c->number = chassis_number;
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QLIST_INIT(&c->slots);
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QLIST_INSERT_HEAD(&chassis, c, next);
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}
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static PCIESlot *pcie_chassis_find_slot_with_chassis(struct PCIEChassis *c,
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uint8_t slot)
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{
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PCIESlot *s;
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QLIST_FOREACH(s, &c->slots, next) {
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if (s->slot == slot) {
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break;
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}
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}
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return s;
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}
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PCIESlot *pcie_chassis_find_slot(uint8_t chassis_number, uint16_t slot)
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{
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struct PCIEChassis *c;
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c = pcie_chassis_find(chassis_number);
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if (!c) {
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return NULL;
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}
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return pcie_chassis_find_slot_with_chassis(c, slot);
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}
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int pcie_chassis_add_slot(struct PCIESlot *slot)
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{
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struct PCIEChassis *c;
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c = pcie_chassis_find(slot->chassis);
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if (!c) {
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return -ENODEV;
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}
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if (pcie_chassis_find_slot_with_chassis(c, slot->slot)) {
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return -EBUSY;
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}
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QLIST_INSERT_HEAD(&c->slots, slot, next);
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return 0;
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}
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void pcie_chassis_del_slot(PCIESlot *s)
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{
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QLIST_REMOVE(s, next);
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}
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@ -0,0 +1,51 @@
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/*
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* pcie_port.h
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*
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* Copyright (c) 2010 Isaku Yamahata <yamahata at valinux co jp>
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* VA Linux Systems Japan K.K.
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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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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 along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef QEMU_PCIE_PORT_H
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#define QEMU_PCIE_PORT_H
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#include "pci_bridge.h"
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#include "pci_internals.h"
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struct PCIEPort {
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PCIBridge br;
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/* pci express switch port */
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uint8_t port;
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};
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void pcie_port_init_reg(PCIDevice *d);
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struct PCIESlot {
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PCIEPort port;
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/* pci express switch port with slot */
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uint8_t chassis;
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uint16_t slot;
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QLIST_ENTRY(PCIESlot) next;
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};
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void pcie_chassis_create(uint8_t chassis_number);
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void pcie_main_chassis_create(void);
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PCIESlot *pcie_chassis_find_slot(uint8_t chassis, uint16_t slot);
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int pcie_chassis_add_slot(struct PCIESlot *slot);
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void pcie_chassis_del_slot(PCIESlot *s);
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#endif /* QEMU_PCIE_PORT_H */
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@ -221,6 +221,8 @@ typedef struct PCIBus PCIBus;
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typedef struct PCIDevice PCIDevice;
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typedef struct PCIDevice PCIDevice;
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typedef struct PCIExpressDevice PCIExpressDevice;
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typedef struct PCIExpressDevice PCIExpressDevice;
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typedef struct PCIBridge PCIBridge;
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typedef struct PCIBridge PCIBridge;
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typedef struct PCIEPort PCIEPort;
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typedef struct PCIESlot PCIESlot;
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typedef struct SerialState SerialState;
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typedef struct SerialState SerialState;
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typedef struct IRQState *qemu_irq;
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typedef struct IRQState *qemu_irq;
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typedef struct PCMCIACardState PCMCIACardState;
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typedef struct PCMCIACardState PCMCIACardState;
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