6b59fc74b5
This patch fixes endianness issues in the e1000 nic emulation, which currently only works on little endian hosts with little endian targets. Byte swapping does not depend on host endianness, so this patch remove the use of cpu_to_le32 and le32_to_cpu functions. It depends on the path from the CPU to the device, which is currently and *wrongly* implemented in Qemu as a byteswap on big endian targets. This patch does the same as in other devices emulation as all the currently implemented targets work with this implementation. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4046 c046a42c-6fe2-441c-8c8c-71466251a162
1007 lines
32 KiB
C
1007 lines
32 KiB
C
/*
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* QEMU e1000 emulation
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*
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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 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, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "hw.h"
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#include "pci.h"
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#include "net.h"
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#include "e1000_hw.h"
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#define DEBUG
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#ifdef DEBUG
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enum {
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DEBUG_GENERAL, DEBUG_IO, DEBUG_MMIO, DEBUG_INTERRUPT,
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DEBUG_RX, DEBUG_TX, DEBUG_MDIC, DEBUG_EEPROM,
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DEBUG_UNKNOWN, DEBUG_TXSUM, DEBUG_TXERR, DEBUG_RXERR,
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DEBUG_RXFILTER, DEBUG_NOTYET,
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};
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#define DBGBIT(x) (1<<DEBUG_##x)
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static int debugflags = DBGBIT(TXERR) | DBGBIT(GENERAL);
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#define DBGOUT(what, fmt, params...) do { \
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if (debugflags & DBGBIT(what)) \
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fprintf(stderr, "e1000: " fmt, ##params); \
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} while (0)
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#else
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#define DBGOUT(what, fmt, params...) do {} while (0)
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#endif
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#define IOPORT_SIZE 0x40
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#define PNPMMIO_SIZE 0x20000
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/*
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* HW models:
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* E1000_DEV_ID_82540EM works with Windows and Linux
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* E1000_DEV_ID_82573L OK with windoze and Linux 2.6.22,
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* appears to perform better than 82540EM, but breaks with Linux 2.6.18
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* E1000_DEV_ID_82544GC_COPPER appears to work; not well tested
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* Others never tested
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*/
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enum { E1000_DEVID = E1000_DEV_ID_82540EM };
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/*
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* May need to specify additional MAC-to-PHY entries --
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* Intel's Windows driver refuses to initialize unless they match
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*/
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enum {
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PHY_ID2_INIT = E1000_DEVID == E1000_DEV_ID_82573L ? 0xcc2 :
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E1000_DEVID == E1000_DEV_ID_82544GC_COPPER ? 0xc30 :
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/* default to E1000_DEV_ID_82540EM */ 0xc20
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};
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typedef struct E1000State_st {
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PCIDevice dev;
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VLANClientState *vc;
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NICInfo *nd;
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uint32_t instance;
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uint32_t mmio_base;
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int mmio_index;
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uint32_t mac_reg[0x8000];
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uint16_t phy_reg[0x20];
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uint16_t eeprom_data[64];
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uint32_t rxbuf_size;
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uint32_t rxbuf_min_shift;
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int check_rxov;
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struct e1000_tx {
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unsigned char header[256];
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unsigned char data[0x10000];
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uint16_t size;
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unsigned char sum_needed;
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uint8_t ipcss;
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uint8_t ipcso;
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uint16_t ipcse;
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uint8_t tucss;
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uint8_t tucso;
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uint16_t tucse;
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uint8_t hdr_len;
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uint16_t mss;
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uint32_t paylen;
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uint16_t tso_frames;
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char tse;
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char ip;
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char tcp;
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} tx;
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struct {
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uint32_t val_in; // shifted in from guest driver
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uint16_t bitnum_in;
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uint16_t bitnum_out;
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uint16_t reading;
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uint32_t old_eecd;
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} eecd_state;
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} E1000State;
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#define defreg(x) x = (E1000_##x>>2)
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enum {
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defreg(CTRL), defreg(EECD), defreg(EERD), defreg(GPRC),
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defreg(GPTC), defreg(ICR), defreg(ICS), defreg(IMC),
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defreg(IMS), defreg(LEDCTL), defreg(MANC), defreg(MDIC),
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defreg(MPC), defreg(PBA), defreg(RCTL), defreg(RDBAH),
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defreg(RDBAL), defreg(RDH), defreg(RDLEN), defreg(RDT),
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defreg(STATUS), defreg(SWSM), defreg(TCTL), defreg(TDBAH),
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defreg(TDBAL), defreg(TDH), defreg(TDLEN), defreg(TDT),
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defreg(TORH), defreg(TORL), defreg(TOTH), defreg(TOTL),
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defreg(TPR), defreg(TPT), defreg(TXDCTL), defreg(WUFC),
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defreg(RA), defreg(MTA), defreg(CRCERRS),
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};
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enum { PHY_R = 1, PHY_W = 2, PHY_RW = PHY_R | PHY_W };
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static char phy_regcap[0x20] = {
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[PHY_STATUS] = PHY_R, [M88E1000_EXT_PHY_SPEC_CTRL] = PHY_RW,
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[PHY_ID1] = PHY_R, [M88E1000_PHY_SPEC_CTRL] = PHY_RW,
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[PHY_CTRL] = PHY_RW, [PHY_1000T_CTRL] = PHY_RW,
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[PHY_LP_ABILITY] = PHY_R, [PHY_1000T_STATUS] = PHY_R,
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[PHY_AUTONEG_ADV] = PHY_RW, [M88E1000_RX_ERR_CNTR] = PHY_R,
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[PHY_ID2] = PHY_R,
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};
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static void
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ioport_map(PCIDevice *pci_dev, int region_num, uint32_t addr,
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uint32_t size, int type)
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{
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DBGOUT(IO, "e1000_ioport_map addr=0x%04x size=0x%08x\n", addr, size);
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}
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static void
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set_interrupt_cause(E1000State *s, int index, uint32_t val)
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{
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if (val)
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val |= E1000_ICR_INT_ASSERTED;
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s->mac_reg[ICR] = val;
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qemu_set_irq(s->dev.irq[0], (s->mac_reg[IMS] & s->mac_reg[ICR]) != 0);
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}
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static void
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set_ics(E1000State *s, int index, uint32_t val)
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{
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DBGOUT(INTERRUPT, "set_ics %x, ICR %x, IMR %x\n", val, s->mac_reg[ICR],
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s->mac_reg[IMS]);
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set_interrupt_cause(s, 0, val | s->mac_reg[ICR]);
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}
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static int
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rxbufsize(uint32_t v)
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{
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v &= E1000_RCTL_BSEX | E1000_RCTL_SZ_16384 | E1000_RCTL_SZ_8192 |
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E1000_RCTL_SZ_4096 | E1000_RCTL_SZ_2048 | E1000_RCTL_SZ_1024 |
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E1000_RCTL_SZ_512 | E1000_RCTL_SZ_256;
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switch (v) {
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case E1000_RCTL_BSEX | E1000_RCTL_SZ_16384:
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return 16384;
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case E1000_RCTL_BSEX | E1000_RCTL_SZ_8192:
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return 8192;
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case E1000_RCTL_BSEX | E1000_RCTL_SZ_4096:
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return 4096;
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case E1000_RCTL_SZ_1024:
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return 1024;
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case E1000_RCTL_SZ_512:
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return 512;
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case E1000_RCTL_SZ_256:
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return 256;
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}
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return 2048;
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}
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static void
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set_rx_control(E1000State *s, int index, uint32_t val)
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{
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s->mac_reg[RCTL] = val;
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s->rxbuf_size = rxbufsize(val);
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s->rxbuf_min_shift = ((val / E1000_RCTL_RDMTS_QUAT) & 3) + 1;
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DBGOUT(RX, "RCTL: %d, mac_reg[RCTL] = 0x%x\n", s->mac_reg[RDT],
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s->mac_reg[RCTL]);
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}
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static void
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set_mdic(E1000State *s, int index, uint32_t val)
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{
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uint32_t data = val & E1000_MDIC_DATA_MASK;
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uint32_t addr = ((val & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT);
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if ((val & E1000_MDIC_PHY_MASK) >> E1000_MDIC_PHY_SHIFT != 1) // phy #
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val = s->mac_reg[MDIC] | E1000_MDIC_ERROR;
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else if (val & E1000_MDIC_OP_READ) {
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DBGOUT(MDIC, "MDIC read reg 0x%x\n", addr);
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if (!(phy_regcap[addr] & PHY_R)) {
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DBGOUT(MDIC, "MDIC read reg %x unhandled\n", addr);
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val |= E1000_MDIC_ERROR;
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} else
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val = (val ^ data) | s->phy_reg[addr];
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} else if (val & E1000_MDIC_OP_WRITE) {
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DBGOUT(MDIC, "MDIC write reg 0x%x, value 0x%x\n", addr, data);
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if (!(phy_regcap[addr] & PHY_W)) {
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DBGOUT(MDIC, "MDIC write reg %x unhandled\n", addr);
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val |= E1000_MDIC_ERROR;
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} else
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s->phy_reg[addr] = data;
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}
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s->mac_reg[MDIC] = val | E1000_MDIC_READY;
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set_ics(s, 0, E1000_ICR_MDAC);
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}
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static uint32_t
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get_eecd(E1000State *s, int index)
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{
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uint32_t ret = E1000_EECD_PRES|E1000_EECD_GNT | s->eecd_state.old_eecd;
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DBGOUT(EEPROM, "reading eeprom bit %d (reading %d)\n",
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s->eecd_state.bitnum_out, s->eecd_state.reading);
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if (!s->eecd_state.reading ||
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((s->eeprom_data[(s->eecd_state.bitnum_out >> 4) & 0x3f] >>
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((s->eecd_state.bitnum_out & 0xf) ^ 0xf))) & 1)
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ret |= E1000_EECD_DO;
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return ret;
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}
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static void
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set_eecd(E1000State *s, int index, uint32_t val)
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{
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uint32_t oldval = s->eecd_state.old_eecd;
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s->eecd_state.old_eecd = val & (E1000_EECD_SK | E1000_EECD_CS |
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E1000_EECD_DI|E1000_EECD_FWE_MASK|E1000_EECD_REQ);
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if (!(E1000_EECD_SK & (val ^ oldval))) // no clock edge
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return;
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if (!(E1000_EECD_SK & val)) { // falling edge
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s->eecd_state.bitnum_out++;
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return;
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}
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if (!(val & E1000_EECD_CS)) { // rising, no CS (EEPROM reset)
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memset(&s->eecd_state, 0, sizeof s->eecd_state);
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return;
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}
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s->eecd_state.val_in <<= 1;
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if (val & E1000_EECD_DI)
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s->eecd_state.val_in |= 1;
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if (++s->eecd_state.bitnum_in == 9 && !s->eecd_state.reading) {
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s->eecd_state.bitnum_out = ((s->eecd_state.val_in & 0x3f)<<4)-1;
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s->eecd_state.reading = (((s->eecd_state.val_in >> 6) & 7) ==
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EEPROM_READ_OPCODE_MICROWIRE);
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}
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DBGOUT(EEPROM, "eeprom bitnum in %d out %d, reading %d\n",
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s->eecd_state.bitnum_in, s->eecd_state.bitnum_out,
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s->eecd_state.reading);
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}
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static uint32_t
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flash_eerd_read(E1000State *s, int x)
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{
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unsigned int index, r = s->mac_reg[EERD] & ~E1000_EEPROM_RW_REG_START;
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if ((index = r >> E1000_EEPROM_RW_ADDR_SHIFT) > EEPROM_CHECKSUM_REG)
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return 0;
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return (s->eeprom_data[index] << E1000_EEPROM_RW_REG_DATA) |
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E1000_EEPROM_RW_REG_DONE | r;
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}
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static unsigned int
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do_cksum(uint8_t *dp, uint8_t *de)
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{
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unsigned int bsum[2] = {0, 0}, i, sum;
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for (i = 1; dp < de; bsum[i^=1] += *dp++)
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;
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sum = (bsum[0] << 8) + bsum[1];
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sum = (sum >> 16) + (sum & 0xffff);
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return ~(sum + (sum >> 16));
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}
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static void
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putsum(uint8_t *data, uint32_t n, uint32_t sloc, uint32_t css, uint32_t cse)
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{
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if (cse && cse < n)
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n = cse + 1;
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if (sloc < n-1)
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cpu_to_be16wu((uint16_t *)(data + sloc),
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do_cksum(data + css, data + n));
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}
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static void
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xmit_seg(E1000State *s)
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{
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uint16_t len, *sp;
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unsigned int frames = s->tx.tso_frames, css, sofar, n;
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struct e1000_tx *tp = &s->tx;
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if (tp->tse) {
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css = tp->ipcss;
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DBGOUT(TXSUM, "frames %d size %d ipcss %d\n",
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frames, tp->size, css);
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if (tp->ip) { // IPv4
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cpu_to_be16wu((uint16_t *)(tp->data+css+2),
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tp->size - css);
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cpu_to_be16wu((uint16_t *)(tp->data+css+4),
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be16_to_cpup((uint16_t *)(tp->data+css+4))+frames);
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} else // IPv6
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cpu_to_be16wu((uint16_t *)(tp->data+css+4),
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tp->size - css);
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css = tp->tucss;
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len = tp->size - css;
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DBGOUT(TXSUM, "tcp %d tucss %d len %d\n", tp->tcp, css, len);
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if (tp->tcp) {
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sofar = frames * tp->mss;
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cpu_to_be32wu((uint32_t *)(tp->data+css+4), // seq
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be32_to_cpup((uint32_t *)(tp->data+css+4))+sofar);
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if (tp->paylen - sofar > tp->mss)
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tp->data[css + 13] &= ~9; // PSH, FIN
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} else // UDP
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cpu_to_be16wu((uint16_t *)(tp->data+css+4), len);
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if (tp->sum_needed & E1000_TXD_POPTS_TXSM) {
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// add pseudo-header length before checksum calculation
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sp = (uint16_t *)(tp->data + tp->tucso);
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cpu_to_be16wu(sp, be16_to_cpup(sp) + len);
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}
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tp->tso_frames++;
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}
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if (tp->sum_needed & E1000_TXD_POPTS_TXSM)
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putsum(tp->data, tp->size, tp->tucso, tp->tucss, tp->tucse);
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if (tp->sum_needed & E1000_TXD_POPTS_IXSM)
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putsum(tp->data, tp->size, tp->ipcso, tp->ipcss, tp->ipcse);
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qemu_send_packet(s->vc, tp->data, tp->size);
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s->mac_reg[TPT]++;
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s->mac_reg[GPTC]++;
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n = s->mac_reg[TOTL];
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if ((s->mac_reg[TOTL] += s->tx.size) < n)
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s->mac_reg[TOTH]++;
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}
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static void
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process_tx_desc(E1000State *s, struct e1000_tx_desc *dp)
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{
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uint32_t txd_lower = le32_to_cpu(dp->lower.data);
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uint32_t dtype = txd_lower & (E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D);
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unsigned int split_size = txd_lower & 0xffff, bytes, sz, op;
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unsigned int msh = 0xfffff, hdr = 0;
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uint64_t addr;
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struct e1000_context_desc *xp = (struct e1000_context_desc *)dp;
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struct e1000_tx *tp = &s->tx;
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if (dtype == E1000_TXD_CMD_DEXT) { // context descriptor
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op = le32_to_cpu(xp->cmd_and_length);
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tp->ipcss = xp->lower_setup.ip_fields.ipcss;
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tp->ipcso = xp->lower_setup.ip_fields.ipcso;
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tp->ipcse = le16_to_cpu(xp->lower_setup.ip_fields.ipcse);
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tp->tucss = xp->upper_setup.tcp_fields.tucss;
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tp->tucso = xp->upper_setup.tcp_fields.tucso;
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tp->tucse = le16_to_cpu(xp->upper_setup.tcp_fields.tucse);
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tp->paylen = op & 0xfffff;
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tp->hdr_len = xp->tcp_seg_setup.fields.hdr_len;
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tp->mss = le16_to_cpu(xp->tcp_seg_setup.fields.mss);
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tp->ip = (op & E1000_TXD_CMD_IP) ? 1 : 0;
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tp->tcp = (op & E1000_TXD_CMD_TCP) ? 1 : 0;
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tp->tse = (op & E1000_TXD_CMD_TSE) ? 1 : 0;
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tp->tso_frames = 0;
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if (tp->tucso == 0) { // this is probably wrong
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DBGOUT(TXSUM, "TCP/UDP: cso 0!\n");
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tp->tucso = tp->tucss + (tp->tcp ? 16 : 6);
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}
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return;
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} else if (dtype == (E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D))
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tp->sum_needed = le32_to_cpu(dp->upper.data) >> 8;
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addr = le64_to_cpu(dp->buffer_addr);
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if (tp->tse) {
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hdr = tp->hdr_len;
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msh = hdr + tp->mss;
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}
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do {
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bytes = split_size;
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if (tp->size + bytes > msh)
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bytes = msh - tp->size;
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cpu_physical_memory_read(addr, tp->data + tp->size, bytes);
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if ((sz = tp->size + bytes) >= hdr && tp->size < hdr)
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memmove(tp->header, tp->data, hdr);
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tp->size = sz;
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addr += bytes;
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if (sz == msh) {
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xmit_seg(s);
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memmove(tp->data, tp->header, hdr);
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tp->size = hdr;
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}
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} while (split_size -= bytes);
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if (!(txd_lower & E1000_TXD_CMD_EOP))
|
|
return;
|
|
if (tp->size > hdr)
|
|
xmit_seg(s);
|
|
tp->tso_frames = 0;
|
|
tp->sum_needed = 0;
|
|
tp->size = 0;
|
|
}
|
|
|
|
static uint32_t
|
|
txdesc_writeback(target_phys_addr_t base, struct e1000_tx_desc *dp)
|
|
{
|
|
uint32_t txd_upper, txd_lower = le32_to_cpu(dp->lower.data);
|
|
|
|
if (!(txd_lower & (E1000_TXD_CMD_RS|E1000_TXD_CMD_RPS)))
|
|
return 0;
|
|
txd_upper = (le32_to_cpu(dp->upper.data) | E1000_TXD_STAT_DD) &
|
|
~(E1000_TXD_STAT_EC | E1000_TXD_STAT_LC | E1000_TXD_STAT_TU);
|
|
dp->upper.data = cpu_to_le32(txd_upper);
|
|
cpu_physical_memory_write(base + ((char *)&dp->upper - (char *)dp),
|
|
(void *)&dp->upper, sizeof(dp->upper));
|
|
return E1000_ICR_TXDW;
|
|
}
|
|
|
|
static void
|
|
start_xmit(E1000State *s)
|
|
{
|
|
target_phys_addr_t base;
|
|
struct e1000_tx_desc desc;
|
|
uint32_t tdh_start = s->mac_reg[TDH], cause = E1000_ICS_TXQE;
|
|
|
|
if (!(s->mac_reg[TCTL] & E1000_TCTL_EN)) {
|
|
DBGOUT(TX, "tx disabled\n");
|
|
return;
|
|
}
|
|
|
|
while (s->mac_reg[TDH] != s->mac_reg[TDT]) {
|
|
base = ((uint64_t)s->mac_reg[TDBAH] << 32) + s->mac_reg[TDBAL] +
|
|
sizeof(struct e1000_tx_desc) * s->mac_reg[TDH];
|
|
cpu_physical_memory_read(base, (void *)&desc, sizeof(desc));
|
|
|
|
DBGOUT(TX, "index %d: %p : %x %x\n", s->mac_reg[TDH],
|
|
(void *)desc.buffer_addr, desc.lower.data,
|
|
desc.upper.data);
|
|
|
|
process_tx_desc(s, &desc);
|
|
cause |= txdesc_writeback(base, &desc);
|
|
|
|
if (++s->mac_reg[TDH] * sizeof(desc) >= s->mac_reg[TDLEN])
|
|
s->mac_reg[TDH] = 0;
|
|
/*
|
|
* the following could happen only if guest sw assigns
|
|
* bogus values to TDT/TDLEN.
|
|
* there's nothing too intelligent we could do about this.
|
|
*/
|
|
if (s->mac_reg[TDH] == tdh_start) {
|
|
DBGOUT(TXERR, "TDH wraparound @%x, TDT %x, TDLEN %x\n",
|
|
tdh_start, s->mac_reg[TDT], s->mac_reg[TDLEN]);
|
|
break;
|
|
}
|
|
}
|
|
set_ics(s, 0, cause);
|
|
}
|
|
|
|
static int
|
|
receive_filter(E1000State *s, const uint8_t *buf, int size)
|
|
{
|
|
static uint8_t bcast[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
|
|
static int mta_shift[] = {4, 3, 2, 0};
|
|
uint32_t f, rctl = s->mac_reg[RCTL], ra[2], *rp;
|
|
|
|
if (rctl & E1000_RCTL_UPE) // promiscuous
|
|
return 1;
|
|
|
|
if ((buf[0] & 1) && (rctl & E1000_RCTL_MPE)) // promiscuous mcast
|
|
return 1;
|
|
|
|
if ((rctl & E1000_RCTL_BAM) && !memcmp(buf, bcast, sizeof bcast))
|
|
return 1;
|
|
|
|
for (rp = s->mac_reg + RA; rp < s->mac_reg + RA + 32; rp += 2) {
|
|
if (!(rp[1] & E1000_RAH_AV))
|
|
continue;
|
|
ra[0] = cpu_to_le32(rp[0]);
|
|
ra[1] = cpu_to_le32(rp[1]);
|
|
if (!memcmp(buf, (uint8_t *)ra, 6)) {
|
|
DBGOUT(RXFILTER,
|
|
"unicast match[%d]: %02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
(int)(rp - s->mac_reg - RA)/2,
|
|
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
|
|
return 1;
|
|
}
|
|
}
|
|
DBGOUT(RXFILTER, "unicast mismatch: %02x:%02x:%02x:%02x:%02x:%02x\n",
|
|
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5]);
|
|
|
|
f = mta_shift[(rctl >> E1000_RCTL_MO_SHIFT) & 3];
|
|
f = (((buf[5] << 8) | buf[4]) >> f) & 0xfff;
|
|
if (s->mac_reg[MTA + (f >> 5)] & (1 << (f & 0x1f)))
|
|
return 1;
|
|
DBGOUT(RXFILTER,
|
|
"dropping, inexact filter mismatch: %02x:%02x:%02x:%02x:%02x:%02x MO %d MTA[%d] %x\n",
|
|
buf[0], buf[1], buf[2], buf[3], buf[4], buf[5],
|
|
(rctl >> E1000_RCTL_MO_SHIFT) & 3, f >> 5,
|
|
s->mac_reg[MTA + (f >> 5)]);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
e1000_can_receive(void *opaque)
|
|
{
|
|
E1000State *s = opaque;
|
|
|
|
return (!(s->mac_reg[RCTL] & E1000_RCTL_EN) ||
|
|
s->mac_reg[RDH] != s->mac_reg[RDT]);
|
|
}
|
|
|
|
static void
|
|
e1000_receive(void *opaque, const uint8_t *buf, int size)
|
|
{
|
|
E1000State *s = opaque;
|
|
struct e1000_rx_desc desc;
|
|
target_phys_addr_t base;
|
|
unsigned int n, rdt;
|
|
uint32_t rdh_start;
|
|
|
|
if (!(s->mac_reg[RCTL] & E1000_RCTL_EN))
|
|
return;
|
|
|
|
if (size > s->rxbuf_size) {
|
|
DBGOUT(RX, "packet too large for buffers (%d > %d)\n", size,
|
|
s->rxbuf_size);
|
|
return;
|
|
}
|
|
|
|
if (!receive_filter(s, buf, size))
|
|
return;
|
|
|
|
rdh_start = s->mac_reg[RDH];
|
|
size += 4; // for the header
|
|
do {
|
|
if (s->mac_reg[RDH] == s->mac_reg[RDT] && s->check_rxov) {
|
|
set_ics(s, 0, E1000_ICS_RXO);
|
|
return;
|
|
}
|
|
base = ((uint64_t)s->mac_reg[RDBAH] << 32) + s->mac_reg[RDBAL] +
|
|
sizeof(desc) * s->mac_reg[RDH];
|
|
cpu_physical_memory_read(base, (void *)&desc, sizeof(desc));
|
|
desc.status |= E1000_RXD_STAT_DD;
|
|
if (desc.buffer_addr) {
|
|
cpu_physical_memory_write(le64_to_cpu(desc.buffer_addr),
|
|
(void *)buf, size);
|
|
desc.length = cpu_to_le16(size);
|
|
desc.status |= E1000_RXD_STAT_EOP|E1000_RXD_STAT_IXSM;
|
|
} else // as per intel docs; skip descriptors with null buf addr
|
|
DBGOUT(RX, "Null RX descriptor!!\n");
|
|
cpu_physical_memory_write(base, (void *)&desc, sizeof(desc));
|
|
|
|
if (++s->mac_reg[RDH] * sizeof(desc) >= s->mac_reg[RDLEN])
|
|
s->mac_reg[RDH] = 0;
|
|
s->check_rxov = 1;
|
|
/* see comment in start_xmit; same here */
|
|
if (s->mac_reg[RDH] == rdh_start) {
|
|
DBGOUT(RXERR, "RDH wraparound @%x, RDT %x, RDLEN %x\n",
|
|
rdh_start, s->mac_reg[RDT], s->mac_reg[RDLEN]);
|
|
set_ics(s, 0, E1000_ICS_RXO);
|
|
return;
|
|
}
|
|
} while (desc.buffer_addr == 0);
|
|
|
|
s->mac_reg[GPRC]++;
|
|
s->mac_reg[TPR]++;
|
|
n = s->mac_reg[TORL];
|
|
if ((s->mac_reg[TORL] += size) < n)
|
|
s->mac_reg[TORH]++;
|
|
|
|
n = E1000_ICS_RXT0;
|
|
if ((rdt = s->mac_reg[RDT]) < s->mac_reg[RDH])
|
|
rdt += s->mac_reg[RDLEN] / sizeof(desc);
|
|
if (((rdt - s->mac_reg[RDH]) * sizeof(desc)) << s->rxbuf_min_shift >=
|
|
s->mac_reg[RDLEN])
|
|
n |= E1000_ICS_RXDMT0;
|
|
|
|
set_ics(s, 0, n);
|
|
}
|
|
|
|
static uint32_t
|
|
mac_readreg(E1000State *s, int index)
|
|
{
|
|
return s->mac_reg[index];
|
|
}
|
|
|
|
static uint32_t
|
|
mac_icr_read(E1000State *s, int index)
|
|
{
|
|
uint32_t ret = s->mac_reg[ICR];
|
|
|
|
DBGOUT(INTERRUPT, "ICR read: %x\n", ret);
|
|
set_interrupt_cause(s, 0, 0);
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t
|
|
mac_read_clr4(E1000State *s, int index)
|
|
{
|
|
uint32_t ret = s->mac_reg[index];
|
|
|
|
s->mac_reg[index] = 0;
|
|
return ret;
|
|
}
|
|
|
|
static uint32_t
|
|
mac_read_clr8(E1000State *s, int index)
|
|
{
|
|
uint32_t ret = s->mac_reg[index];
|
|
|
|
s->mac_reg[index] = 0;
|
|
s->mac_reg[index-1] = 0;
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
mac_writereg(E1000State *s, int index, uint32_t val)
|
|
{
|
|
s->mac_reg[index] = val;
|
|
}
|
|
|
|
static void
|
|
set_rdt(E1000State *s, int index, uint32_t val)
|
|
{
|
|
s->check_rxov = 0;
|
|
s->mac_reg[index] = val & 0xffff;
|
|
}
|
|
|
|
static void
|
|
set_16bit(E1000State *s, int index, uint32_t val)
|
|
{
|
|
s->mac_reg[index] = val & 0xffff;
|
|
}
|
|
|
|
static void
|
|
set_dlen(E1000State *s, int index, uint32_t val)
|
|
{
|
|
s->mac_reg[index] = val & 0xfff80;
|
|
}
|
|
|
|
static void
|
|
set_tctl(E1000State *s, int index, uint32_t val)
|
|
{
|
|
s->mac_reg[index] = val;
|
|
s->mac_reg[TDT] &= 0xffff;
|
|
start_xmit(s);
|
|
}
|
|
|
|
static void
|
|
set_icr(E1000State *s, int index, uint32_t val)
|
|
{
|
|
DBGOUT(INTERRUPT, "set_icr %x\n", val);
|
|
set_interrupt_cause(s, 0, s->mac_reg[ICR] & ~val);
|
|
}
|
|
|
|
static void
|
|
set_imc(E1000State *s, int index, uint32_t val)
|
|
{
|
|
s->mac_reg[IMS] &= ~val;
|
|
set_ics(s, 0, 0);
|
|
}
|
|
|
|
static void
|
|
set_ims(E1000State *s, int index, uint32_t val)
|
|
{
|
|
s->mac_reg[IMS] |= val;
|
|
set_ics(s, 0, 0);
|
|
}
|
|
|
|
#define getreg(x) [x] = mac_readreg
|
|
static uint32_t (*macreg_readops[])(E1000State *, int) = {
|
|
getreg(PBA), getreg(RCTL), getreg(TDH), getreg(TXDCTL),
|
|
getreg(WUFC), getreg(TDT), getreg(CTRL), getreg(LEDCTL),
|
|
getreg(MANC), getreg(MDIC), getreg(SWSM), getreg(STATUS),
|
|
getreg(TORL), getreg(TOTL), getreg(IMS), getreg(TCTL),
|
|
getreg(RDH), getreg(RDT),
|
|
|
|
[TOTH] = mac_read_clr8, [TORH] = mac_read_clr8, [GPRC] = mac_read_clr4,
|
|
[GPTC] = mac_read_clr4, [TPR] = mac_read_clr4, [TPT] = mac_read_clr4,
|
|
[ICR] = mac_icr_read, [EECD] = get_eecd, [EERD] = flash_eerd_read,
|
|
[CRCERRS ... MPC] = &mac_readreg,
|
|
[RA ... RA+31] = &mac_readreg,
|
|
[MTA ... MTA+127] = &mac_readreg,
|
|
};
|
|
enum { NREADOPS = sizeof(macreg_readops) / sizeof(*macreg_readops) };
|
|
|
|
#define putreg(x) [x] = mac_writereg
|
|
static void (*macreg_writeops[])(E1000State *, int, uint32_t) = {
|
|
putreg(PBA), putreg(EERD), putreg(SWSM), putreg(WUFC),
|
|
putreg(TDBAL), putreg(TDBAH), putreg(TXDCTL), putreg(RDBAH),
|
|
putreg(RDBAL), putreg(LEDCTL),
|
|
[TDLEN] = set_dlen, [RDLEN] = set_dlen, [TCTL] = set_tctl,
|
|
[TDT] = set_tctl, [MDIC] = set_mdic, [ICS] = set_ics,
|
|
[TDH] = set_16bit, [RDH] = set_16bit, [RDT] = set_rdt,
|
|
[IMC] = set_imc, [IMS] = set_ims, [ICR] = set_icr,
|
|
[EECD] = set_eecd, [RCTL] = set_rx_control,
|
|
[RA ... RA+31] = &mac_writereg,
|
|
[MTA ... MTA+127] = &mac_writereg,
|
|
};
|
|
enum { NWRITEOPS = sizeof(macreg_writeops) / sizeof(*macreg_writeops) };
|
|
|
|
static void
|
|
e1000_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
{
|
|
E1000State *s = opaque;
|
|
unsigned int index = ((addr - s->mmio_base) & 0x1ffff) >> 2;
|
|
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
val = bswap32(val);
|
|
#endif
|
|
if (index < NWRITEOPS && macreg_writeops[index])
|
|
macreg_writeops[index](s, index, val);
|
|
else if (index < NREADOPS && macreg_readops[index])
|
|
DBGOUT(MMIO, "e1000_mmio_writel RO %x: 0x%04x\n", index<<2, val);
|
|
else
|
|
DBGOUT(UNKNOWN, "MMIO unknown write addr=0x%08x,val=0x%08x\n",
|
|
index<<2, val);
|
|
}
|
|
|
|
static void
|
|
e1000_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
{
|
|
// emulate hw without byte enables: no RMW
|
|
e1000_mmio_writel(opaque, addr & ~3,
|
|
(val & 0xffff) << (8*(addr & 3)));
|
|
}
|
|
|
|
static void
|
|
e1000_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
|
|
{
|
|
// emulate hw without byte enables: no RMW
|
|
e1000_mmio_writel(opaque, addr & ~3,
|
|
(val & 0xff) << (8*(addr & 3)));
|
|
}
|
|
|
|
static uint32_t
|
|
e1000_mmio_readl(void *opaque, target_phys_addr_t addr)
|
|
{
|
|
E1000State *s = opaque;
|
|
unsigned int index = ((addr - s->mmio_base) & 0x1ffff) >> 2;
|
|
|
|
if (index < NREADOPS && macreg_readops[index])
|
|
{
|
|
uint32_t val = macreg_readops[index](s, index);
|
|
#ifdef TARGET_WORDS_BIGENDIAN
|
|
val = bswap32(val);
|
|
#endif
|
|
return val;
|
|
}
|
|
DBGOUT(UNKNOWN, "MMIO unknown read addr=0x%08x\n", index<<2);
|
|
return 0;
|
|
}
|
|
|
|
static uint32_t
|
|
e1000_mmio_readb(void *opaque, target_phys_addr_t addr)
|
|
{
|
|
return ((e1000_mmio_readl(opaque, addr & ~3)) >>
|
|
(8 * (addr & 3))) & 0xff;
|
|
}
|
|
|
|
static uint32_t
|
|
e1000_mmio_readw(void *opaque, target_phys_addr_t addr)
|
|
{
|
|
return ((e1000_mmio_readl(opaque, addr & ~3)) >>
|
|
(8 * (addr & 3))) & 0xffff;
|
|
}
|
|
|
|
int mac_regtosave[] = {
|
|
CTRL, EECD, EERD, GPRC, GPTC, ICR, ICS, IMC, IMS,
|
|
LEDCTL, MANC, MDIC, MPC, PBA, RCTL, RDBAH, RDBAL, RDH,
|
|
RDLEN, RDT, STATUS, SWSM, TCTL, TDBAH, TDBAL, TDH, TDLEN,
|
|
TDT, TORH, TORL, TOTH, TOTL, TPR, TPT, TXDCTL, WUFC,
|
|
};
|
|
enum { MAC_NSAVE = sizeof mac_regtosave/sizeof *mac_regtosave };
|
|
|
|
struct {
|
|
int size;
|
|
int array0;
|
|
} mac_regarraystosave[] = { {32, RA}, {128, MTA} };
|
|
enum { MAC_NARRAYS = sizeof mac_regarraystosave/sizeof *mac_regarraystosave };
|
|
|
|
static void
|
|
nic_save(QEMUFile *f, void *opaque)
|
|
{
|
|
E1000State *s = (E1000State *)opaque;
|
|
int i, j;
|
|
|
|
pci_device_save(&s->dev, f);
|
|
qemu_put_be32s(f, &s->instance);
|
|
qemu_put_be32s(f, &s->mmio_base);
|
|
qemu_put_be32s(f, &s->rxbuf_size);
|
|
qemu_put_be32s(f, &s->rxbuf_min_shift);
|
|
qemu_put_be32s(f, &s->eecd_state.val_in);
|
|
qemu_put_be16s(f, &s->eecd_state.bitnum_in);
|
|
qemu_put_be16s(f, &s->eecd_state.bitnum_out);
|
|
qemu_put_be16s(f, &s->eecd_state.reading);
|
|
qemu_put_be32s(f, &s->eecd_state.old_eecd);
|
|
qemu_put_8s(f, &s->tx.ipcss);
|
|
qemu_put_8s(f, &s->tx.ipcso);
|
|
qemu_put_be16s(f, &s->tx.ipcse);
|
|
qemu_put_8s(f, &s->tx.tucss);
|
|
qemu_put_8s(f, &s->tx.tucso);
|
|
qemu_put_be16s(f, &s->tx.tucse);
|
|
qemu_put_be32s(f, &s->tx.paylen);
|
|
qemu_put_8s(f, &s->tx.hdr_len);
|
|
qemu_put_be16s(f, &s->tx.mss);
|
|
qemu_put_be16s(f, &s->tx.size);
|
|
qemu_put_be16s(f, &s->tx.tso_frames);
|
|
qemu_put_8s(f, &s->tx.sum_needed);
|
|
qemu_put_8s(f, &s->tx.ip);
|
|
qemu_put_8s(f, &s->tx.tcp);
|
|
qemu_put_buffer(f, s->tx.header, sizeof s->tx.header);
|
|
qemu_put_buffer(f, s->tx.data, sizeof s->tx.data);
|
|
for (i = 0; i < 64; i++)
|
|
qemu_put_be16s(f, s->eeprom_data + i);
|
|
for (i = 0; i < 0x20; i++)
|
|
qemu_put_be16s(f, s->phy_reg + i);
|
|
for (i = 0; i < MAC_NSAVE; i++)
|
|
qemu_put_be32s(f, s->mac_reg + mac_regtosave[i]);
|
|
for (i = 0; i < MAC_NARRAYS; i++)
|
|
for (j = 0; j < mac_regarraystosave[i].size; j++)
|
|
qemu_put_be32s(f,
|
|
s->mac_reg + mac_regarraystosave[i].array0 + j);
|
|
}
|
|
|
|
static int
|
|
nic_load(QEMUFile *f, void *opaque, int version_id)
|
|
{
|
|
E1000State *s = (E1000State *)opaque;
|
|
int i, j, ret;
|
|
|
|
if ((ret = pci_device_load(&s->dev, f)) < 0)
|
|
return ret;
|
|
qemu_get_be32s(f, &s->instance);
|
|
qemu_get_be32s(f, &s->mmio_base);
|
|
qemu_get_be32s(f, &s->rxbuf_size);
|
|
qemu_get_be32s(f, &s->rxbuf_min_shift);
|
|
qemu_get_be32s(f, &s->eecd_state.val_in);
|
|
qemu_get_be16s(f, &s->eecd_state.bitnum_in);
|
|
qemu_get_be16s(f, &s->eecd_state.bitnum_out);
|
|
qemu_get_be16s(f, &s->eecd_state.reading);
|
|
qemu_get_be32s(f, &s->eecd_state.old_eecd);
|
|
qemu_get_8s(f, &s->tx.ipcss);
|
|
qemu_get_8s(f, &s->tx.ipcso);
|
|
qemu_get_be16s(f, &s->tx.ipcse);
|
|
qemu_get_8s(f, &s->tx.tucss);
|
|
qemu_get_8s(f, &s->tx.tucso);
|
|
qemu_get_be16s(f, &s->tx.tucse);
|
|
qemu_get_be32s(f, &s->tx.paylen);
|
|
qemu_get_8s(f, &s->tx.hdr_len);
|
|
qemu_get_be16s(f, &s->tx.mss);
|
|
qemu_get_be16s(f, &s->tx.size);
|
|
qemu_get_be16s(f, &s->tx.tso_frames);
|
|
qemu_get_8s(f, &s->tx.sum_needed);
|
|
qemu_get_8s(f, &s->tx.ip);
|
|
qemu_get_8s(f, &s->tx.tcp);
|
|
qemu_get_buffer(f, s->tx.header, sizeof s->tx.header);
|
|
qemu_get_buffer(f, s->tx.data, sizeof s->tx.data);
|
|
for (i = 0; i < 64; i++)
|
|
qemu_get_be16s(f, s->eeprom_data + i);
|
|
for (i = 0; i < 0x20; i++)
|
|
qemu_get_be16s(f, s->phy_reg + i);
|
|
for (i = 0; i < MAC_NSAVE; i++)
|
|
qemu_get_be32s(f, s->mac_reg + mac_regtosave[i]);
|
|
for (i = 0; i < MAC_NARRAYS; i++)
|
|
for (j = 0; j < mac_regarraystosave[i].size; j++)
|
|
qemu_get_be32s(f,
|
|
s->mac_reg + mac_regarraystosave[i].array0 + j);
|
|
return 0;
|
|
}
|
|
|
|
static uint16_t e1000_eeprom_template[64] = {
|
|
0x0000, 0x0000, 0x0000, 0x0000, 0xffff, 0x0000, 0x0000, 0x0000,
|
|
0x3000, 0x1000, 0x6403, E1000_DEVID, 0x8086, E1000_DEVID, 0x8086, 0x3040,
|
|
0x0008, 0x2000, 0x7e14, 0x0048, 0x1000, 0x00d8, 0x0000, 0x2700,
|
|
0x6cc9, 0x3150, 0x0722, 0x040b, 0x0984, 0x0000, 0xc000, 0x0706,
|
|
0x1008, 0x0000, 0x0f04, 0x7fff, 0x4d01, 0xffff, 0xffff, 0xffff,
|
|
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
|
|
0x0100, 0x4000, 0x121c, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
|
|
0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0x0000,
|
|
};
|
|
|
|
static uint16_t phy_reg_init[] = {
|
|
[PHY_CTRL] = 0x1140, [PHY_STATUS] = 0x796d, // link initially up
|
|
[PHY_ID1] = 0x141, [PHY_ID2] = PHY_ID2_INIT,
|
|
[PHY_1000T_CTRL] = 0x0e00, [M88E1000_PHY_SPEC_CTRL] = 0x360,
|
|
[M88E1000_EXT_PHY_SPEC_CTRL] = 0x0d60, [PHY_AUTONEG_ADV] = 0xde1,
|
|
[PHY_LP_ABILITY] = 0x1e0, [PHY_1000T_STATUS] = 0x3c00,
|
|
};
|
|
|
|
static uint32_t mac_reg_init[] = {
|
|
[PBA] = 0x00100030,
|
|
[LEDCTL] = 0x602,
|
|
[CTRL] = E1000_CTRL_SWDPIN2 | E1000_CTRL_SWDPIN0 |
|
|
E1000_CTRL_SPD_1000 | E1000_CTRL_SLU,
|
|
[STATUS] = 0x80000000 | E1000_STATUS_GIO_MASTER_ENABLE |
|
|
E1000_STATUS_ASDV | E1000_STATUS_MTXCKOK |
|
|
E1000_STATUS_SPEED_1000 | E1000_STATUS_FD |
|
|
E1000_STATUS_LU,
|
|
[MANC] = E1000_MANC_EN_MNG2HOST | E1000_MANC_RCV_TCO_EN |
|
|
E1000_MANC_ARP_EN | E1000_MANC_0298_EN |
|
|
E1000_MANC_RMCP_EN,
|
|
};
|
|
|
|
/* PCI interface */
|
|
|
|
static CPUWriteMemoryFunc *e1000_mmio_write[] = {
|
|
e1000_mmio_writeb, e1000_mmio_writew, e1000_mmio_writel
|
|
};
|
|
|
|
static CPUReadMemoryFunc *e1000_mmio_read[] = {
|
|
e1000_mmio_readb, e1000_mmio_readw, e1000_mmio_readl
|
|
};
|
|
|
|
static void
|
|
e1000_mmio_map(PCIDevice *pci_dev, int region_num,
|
|
uint32_t addr, uint32_t size, int type)
|
|
{
|
|
E1000State *d = (E1000State *)pci_dev;
|
|
|
|
DBGOUT(MMIO, "e1000_mmio_map addr=0x%08x 0x%08x\n", addr, size);
|
|
|
|
d->mmio_base = addr;
|
|
cpu_register_physical_memory(addr, PNPMMIO_SIZE, d->mmio_index);
|
|
}
|
|
|
|
void
|
|
pci_e1000_init(PCIBus *bus, NICInfo *nd, int devfn)
|
|
{
|
|
E1000State *d;
|
|
uint8_t *pci_conf;
|
|
static int instance;
|
|
uint16_t checksum = 0;
|
|
char *info_str = "e1000";
|
|
int i;
|
|
|
|
d = (E1000State *)pci_register_device(bus, "e1000",
|
|
sizeof(E1000State), devfn, NULL, NULL);
|
|
|
|
pci_conf = d->dev.config;
|
|
memset(pci_conf, 0, 256);
|
|
|
|
*(uint16_t *)(pci_conf+0x00) = cpu_to_le16(0x8086);
|
|
*(uint16_t *)(pci_conf+0x02) = cpu_to_le16(E1000_DEVID);
|
|
*(uint16_t *)(pci_conf+0x04) = cpu_to_le16(0x0407);
|
|
*(uint16_t *)(pci_conf+0x06) = cpu_to_le16(0x0010);
|
|
pci_conf[0x08] = 0x03;
|
|
pci_conf[0x0a] = 0x00; // ethernet network controller
|
|
pci_conf[0x0b] = 0x02;
|
|
pci_conf[0x0c] = 0x10;
|
|
|
|
pci_conf[0x3d] = 1; // interrupt pin 0
|
|
|
|
d->mmio_index = cpu_register_io_memory(0, e1000_mmio_read,
|
|
e1000_mmio_write, d);
|
|
|
|
pci_register_io_region((PCIDevice *)d, 0, PNPMMIO_SIZE,
|
|
PCI_ADDRESS_SPACE_MEM, e1000_mmio_map);
|
|
|
|
pci_register_io_region((PCIDevice *)d, 1, IOPORT_SIZE,
|
|
PCI_ADDRESS_SPACE_IO, ioport_map);
|
|
|
|
d->instance = instance++;
|
|
|
|
d->nd = nd;
|
|
memmove(d->eeprom_data, e1000_eeprom_template,
|
|
sizeof e1000_eeprom_template);
|
|
for (i = 0; i < 3; i++)
|
|
d->eeprom_data[i] = (nd->macaddr[2*i+1]<<8) | nd->macaddr[2*i];
|
|
for (i = 0; i < EEPROM_CHECKSUM_REG; i++)
|
|
checksum += d->eeprom_data[i];
|
|
checksum = (uint16_t) EEPROM_SUM - checksum;
|
|
d->eeprom_data[EEPROM_CHECKSUM_REG] = checksum;
|
|
|
|
memset(d->phy_reg, 0, sizeof d->phy_reg);
|
|
memmove(d->phy_reg, phy_reg_init, sizeof phy_reg_init);
|
|
memset(d->mac_reg, 0, sizeof d->mac_reg);
|
|
memmove(d->mac_reg, mac_reg_init, sizeof mac_reg_init);
|
|
d->rxbuf_min_shift = 1;
|
|
memset(&d->tx, 0, sizeof d->tx);
|
|
|
|
d->vc = qemu_new_vlan_client(nd->vlan, e1000_receive,
|
|
e1000_can_receive, d);
|
|
|
|
snprintf(d->vc->info_str, sizeof(d->vc->info_str),
|
|
"%s macaddr=%02x:%02x:%02x:%02x:%02x:%02x", info_str,
|
|
d->nd->macaddr[0], d->nd->macaddr[1], d->nd->macaddr[2],
|
|
d->nd->macaddr[3], d->nd->macaddr[4], d->nd->macaddr[5]);
|
|
|
|
register_savevm(info_str, d->instance, 1, nic_save, nic_load, d);
|
|
}
|