ad431f0f82
In MSI-X mode, if there are interrupts already notified but not cleared and a new interrupt arrives, e1000e incorrectly notifies the notified ones again along with the new one. To fix this issue, replace e1000e_update_interrupt_state() with two new functions: e1000e_raise_interrupts() and e1000e_lower_interrupts(). These functions don't only raise or lower interrupts, but it also performs register writes which updates the interrupt state. Before it performs a register write, these function determines the interrupts already raised, and compares with the interrupts raised after the register write to determine the interrupts to notify. The introduction of these functions made tracepoints which assumes that the caller of e1000e_update_interrupt_state() performs register writes obsolete. These tracepoints are now removed, and alternative ones are added to the new functions. Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
157 lines
3.9 KiB
C
157 lines
3.9 KiB
C
/*
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* Core code for QEMU e1000e emulation
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*
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* Software developer's manuals:
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* http://www.intel.com/content/dam/doc/datasheet/82574l-gbe-controller-datasheet.pdf
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*
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* Copyright (c) 2015 Ravello Systems LTD (http://ravellosystems.com)
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* Developed by Daynix Computing LTD (http://www.daynix.com)
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*
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* Authors:
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* Dmitry Fleytman <dmitry@daynix.com>
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* Leonid Bloch <leonid@daynix.com>
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* Yan Vugenfirer <yan@daynix.com>
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*
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* Based on work done by:
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* Nir Peleg, Tutis Systems Ltd. for Qumranet Inc.
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* Copyright (c) 2008 Qumranet
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* Based on work done by:
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* Copyright (c) 2007 Dan Aloni
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* Copyright (c) 2004 Antony T Curtis
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef HW_NET_E1000E_CORE_H
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#define HW_NET_E1000E_CORE_H
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#define E1000E_PHY_PAGE_SIZE (0x20)
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#define E1000E_PHY_PAGES (0x07)
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#define E1000E_MAC_SIZE (0x8000)
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#define E1000E_EEPROM_SIZE (64)
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#define E1000E_MSIX_VEC_NUM (5)
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#define E1000E_NUM_QUEUES (2)
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typedef struct E1000Core E1000ECore;
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enum { PHY_R = BIT(0),
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PHY_W = BIT(1),
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PHY_RW = PHY_R | PHY_W,
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PHY_ANYPAGE = BIT(2) };
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typedef struct E1000IntrDelayTimer_st {
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QEMUTimer *timer;
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bool running;
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uint32_t delay_reg;
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uint32_t delay_resolution_ns;
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E1000ECore *core;
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} E1000IntrDelayTimer;
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struct E1000Core {
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uint32_t mac[E1000E_MAC_SIZE];
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uint16_t phy[E1000E_PHY_PAGES][E1000E_PHY_PAGE_SIZE];
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uint16_t eeprom[E1000E_EEPROM_SIZE];
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uint32_t rxbuf_sizes[E1000_PSRCTL_BUFFS_PER_DESC];
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uint32_t rx_desc_buf_size;
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uint32_t rxbuf_min_shift;
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uint8_t rx_desc_len;
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QEMUTimer *autoneg_timer;
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struct e1000e_tx {
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e1000x_txd_props props;
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bool skip_cp;
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unsigned char sum_needed;
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bool cptse;
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struct NetTxPkt *tx_pkt;
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} tx[E1000E_NUM_QUEUES];
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struct NetRxPkt *rx_pkt;
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bool has_vnet;
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int max_queue_num;
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/* Interrupt moderation management */
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uint32_t delayed_causes;
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E1000IntrDelayTimer radv;
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E1000IntrDelayTimer rdtr;
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E1000IntrDelayTimer raid;
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E1000IntrDelayTimer tadv;
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E1000IntrDelayTimer tidv;
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E1000IntrDelayTimer itr;
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E1000IntrDelayTimer eitr[E1000E_MSIX_VEC_NUM];
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VMChangeStateEntry *vmstate;
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uint32_t itr_guest_value;
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uint32_t eitr_guest_value[E1000E_MSIX_VEC_NUM];
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uint16_t vet;
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uint8_t permanent_mac[ETH_ALEN];
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NICState *owner_nic;
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PCIDevice *owner;
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void (*owner_start_recv)(PCIDevice *d);
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int64_t timadj;
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};
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void
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e1000e_core_write(E1000ECore *core, hwaddr addr, uint64_t val, unsigned size);
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uint64_t
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e1000e_core_read(E1000ECore *core, hwaddr addr, unsigned size);
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void
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e1000e_core_pci_realize(E1000ECore *regs,
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const uint16_t *eeprom_templ,
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uint32_t eeprom_size,
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const uint8_t *macaddr);
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void
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e1000e_core_reset(E1000ECore *core);
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void
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e1000e_core_pre_save(E1000ECore *core);
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int
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e1000e_core_post_load(E1000ECore *core);
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void
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e1000e_core_set_link_status(E1000ECore *core);
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void
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e1000e_core_pci_uninit(E1000ECore *core);
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bool
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e1000e_can_receive(E1000ECore *core);
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ssize_t
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e1000e_receive(E1000ECore *core, const uint8_t *buf, size_t size);
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ssize_t
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e1000e_receive_iov(E1000ECore *core, const struct iovec *iov, int iovcnt);
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void
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e1000e_start_recv(E1000ECore *core);
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#endif
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