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[kvm-devel] [PATCH] e1000 emulation code
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From: Dor L. <dor...@gm...> - 2008-01-09 16:42:41
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It which supports TCP/UDP and IP transmit checksum, as well as TSO.
It has been tested with Linux (2.6.18|22|23|24)++ and Windows XP (using
the driver supplied at the intel download site).
Windows Vista recognizes it but there is no traffic.
Checksum calculation is currently naïve and unoptimized (the host
kernel does it better). But when working in conjuction to tso
the performance is drastically better.
Some figures: Linux rx 350Mbps, tx 150bps, Windows rx 700mbps, tx 100 mbps.
The e1000_hw.h is copied from Linux kernel.
Also attached is the pxe boot option rom that works with netboot.
Signed-off-by: Dor Laor <dor...@qu...>
Signed-off-by: Nir Peleg <ni...@tu...>
---
qemu/Makefile.target | 1 +
qemu/hw/e1000.c | 1000 +++++++++++++++
qemu/hw/e1000_hw.h | 3411 ++++++++++++++++++++++++++++++++++++++++++++++++++
qemu/hw/pci.c | 2 +
qemu/hw/pci.h | 4 +
5 files changed, 4418 insertions(+), 0 deletions(-)
create mode 100644 qemu/hw/e1000.c
create mode 100644 qemu/hw/e1000_hw.h
diff --git a/qemu/Makefile.target b/qemu/Makefile.target
index bb7be0f..a39662c 100644
--- a/qemu/Makefile.target
+++ b/qemu/Makefile.target
@@ -459,6 +459,7 @@ VL_OBJS += eepro100.o
VL_OBJS += ne2000.o
VL_OBJS += pcnet.o
VL_OBJS += rtl8139.o
+VL_OBJS += e1000.o
# PCI Hypercall
VL_OBJS+= hypercall.o
diff --git a/qemu/hw/e1000.c b/qemu/hw/e1000.c
new file mode 100644
index 0000000..83428ca
--- /dev/null
+++ b/qemu/hw/e1000.c
@@ -0,0 +1,1000 @@
+/*
+ * QEMU e1000 emulation
+ *
+ * Nir Peleg, Tutis Systems Ltd. for Qumranet Inc.
+ * Based on work done by:
+ * Copyright (c) 2007 Dan Aloni
+ * Copyright (c) 2004 Antony T Curtis
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+#include "hw.h"
+#include "pci.h"
+#include "net.h"
+
+#define __iomem
+typedef int boolean_t;
+#include "e1000_hw.h"
+
+#define DEBUG
+
+#ifdef DEBUG
+enum {
+ DEBUG_GENERAL, DEBUG_IO, DEBUG_MMIO, DEBUG_INTERRUPT,
+ DEBUG_RX, DEBUG_TX, DEBUG_MDIC, DEBUG_EEPROM,
+ DEBUG_UNKNOWN, DEBUG_TXSUM, DEBUG_TXERR, DEBUG_RXERR,
+ DEBUG_RXFILTER, DEBUG_NOTYET,
+};
+#define DBGBIT(x) (1<<DEBUG_##x)
+static int debugflags = DBGBIT(TXERR) | DBGBIT(GENERAL);
+
+#define DBGOUT(what, fmt, params...) do { \
+ if (debugflags & DBGBIT(what)) \
+ fprintf(stderr, "e1000: " fmt, ##params); \
+ } while (0)
+#else
+#define DBGOUT(what, fmt, params...) do {} while (0)
+#endif
+
+#define IOPORT_SIZE 0x40
+#define PNPMMIO_SIZE 0x60000
+
+/*
+ * HW models:
+ * E1000_DEV_ID_82540EM works with Windows and Linux
+ * E1000_DEV_ID_82573L OK with windoze and Linux 2.6.22,
+ * appears to perform better than 82540EM, but breaks with Linux 2.6.18
+ * E1000_DEV_ID_82544GC_COPPER appears to work; not well tested
+ * Others never tested
+ */
+enum { E1000_DEVID = E1000_DEV_ID_82540EM };
+
+/*
+ * May need to specify additional MAC-to-PHY entries --
+ * Intel's Windows driver refuses to initialize unless they match
+ */
+enum { PHY_ID2_INIT = E1000_DEVID == E1000_DEV_ID_82573L ? 0xcc2 :
+ E1000_DEVID == E1000_DEV_ID_82544GC_COPPER ? 0xc30 :
+ /* default to E1000_DEV_ID_82540EM */ 0xc20
+};
+
+typedef struct E1000State_st {
+ PCIDevice dev;
+ VLANClientState *vc;
+ NICInfo *nd;
+ uint32_t instance;
+ uint32_t mmio_base;
+ int mmio_index;
+
+ uint32_t mac_reg[0x8000];
+ uint16_t phy_reg[0x20];
+ uint16_t eeprom_data[64];
+
+ uint32_t rxbuf_size;
+ uint32_t rxbuf_min_shift;
+ int check_rxov;
+ struct e1000_tx {
+ unsigned char header[256];
+ unsigned char data[0x10000];
+ uint16_t size;
+ unsigned char sum_needed;
+ uint8_t ipcss;
+ uint8_t ipcso;
+ uint16_t ipcse;
+ uint8_t tucss;
+ uint8_t tucso;
+ uint16_t tucse;
+ uint8_t hdr_len;
+ uint16_t mss;
+ uint32_t paylen;
+ uint16_t tso_frames;
+ char tse;
+ char ip;
+ char tcp;
+ } tx;
+
+ struct {
+ uint32_t val_in; // shifted in from guest driver
+ uint16_t bitnum_in;
+ uint16_t bitnum_out;
+ uint16_t reading;
+ uint32_t old_eecd;
+ } eecd_state;
+} E1000State;
+
+#define defreg(x) x = (E1000_##x>>2)
+enum {
+ defreg(CTRL), defreg(EECD), defreg(EERD), defreg(GPRC),
+ defreg(GPTC), defreg(ICR), defreg(ICS), defreg(IMC),
+ defreg(IMS), defreg(LEDCTL), defreg(MANC), defreg(MDIC),
+ defreg(MPC), defreg(PBA), defreg(RCTL), defreg(RDBAH),
+ defreg(RDBAL), defreg(RDH), defreg(RDLEN), defreg(RDT),
+ defreg(STATUS), defreg(SWSM), defreg(TCTL), defreg(TDBAH),
+ defreg(TDBAL), defreg(TDH), defreg(TDLEN), defreg(TDT),
+ defreg(TORH), defreg(TORL), defreg(TOTH), defreg(TOTL),
+ defreg(TPR), defreg(TPT), defreg(TXDCTL), defreg(WUFC),
+ defreg(RA), defreg(MTA), defreg(CRCERRS),
+};
+
+enum { PHY_R = 1, PHY_W = 2, PHY_RW = PHY_R | PHY_W };
+static char phy_regcap[0x20] = {
+ [PHY_STATUS] = PHY_R, [M88E1000_EXT_PHY_SPEC_CTRL] = PHY_RW,
+ [PHY_ID1] = PHY_R, [M88E1000_PHY_SPEC_CTRL] = PHY_RW,
+ [PHY_CTRL] = PHY_RW, [PHY_1000T_CTRL] = PHY_RW,
+ [PHY_LP_ABILITY] = PHY_R, [PHY_1000T_STATUS] = PHY_R,
+ [PHY_AUTONEG_ADV] = PHY_RW, [M88E1000_RX_ERR_CNTR] = PHY_R,
+ [PHY_ID2] = PHY_R,
+};
+
+static void
+ioport_map(PCIDevice *pci_dev, int region_num, uint32_t addr,
+ uint32_t size, int type)
+{
+ DBGOUT(IO, "e1000_ioport_map addr=0x%04x size=0x%08x\n", addr, size);
+}
+
+static void
+set_interrupt_cause(E1000State *s, int index, uint32_t val)
+{
+ if (val)
+ val |= E1000_ICR_INT_ASSERTED;
+ s->mac_reg[ICR] = val;
+ qemu_set_irq(s->dev.irq[0], (s->mac_reg[IMS] & s->mac_reg[ICR]) != 0);
+}
+
+static void
+set_ics(E1000State *s, int index, uint32_t val)
+{
+ DBGOUT(INTERRUPT, "set_ics %x, ICR %x, IMR %x\n", val, s->mac_reg[ICR],
+ s->mac_reg[IMS]);
+ set_interrupt_cause(s, 0, val | s->mac_reg[ICR]);
+}
+
+static int
+rxbufsize(uint32_t v)
+{
+ v &= E1000_RCTL_BSEX | E1000_RCTL_SZ_16384 | E1000_RCTL_SZ_8192 |
+ E1000_RCTL_SZ_4096 | E1000_RCTL_SZ_2048 | E1000_RCTL_SZ_1024 |
+ E1000_RCTL_SZ_512 | E1000_RCTL_SZ_256;
+ switch (v) {
+ case E1000_RCTL_BSEX | E1000_RCTL_SZ_16384:
+ return 16384;
+ case E1000_RCTL_BSEX | E1000_RCTL_SZ_8192:
+ return 8192;
+ case E1000_RCTL_BSEX | E1000_RCTL_SZ_4096:
+ return 4096;
+ case E1000_RCTL_SZ_1024:
+ return 1024;
+ case E1000_RCTL_SZ_512:
+ return 512;
+ case E1000_RCTL_SZ_256:
+ return 256;
+ }
+ return 2048;
+}
+
+static void
+set_rx_control(E1000State *s, int index, uint32_t val)
+{
+ s->mac_reg[RCTL] = val;
+ s->rxbuf_size = rxbufsize(val);
+ s->rxbuf_min_shift = ((val / E1000_RCTL_RDMTS_QUAT) & 3) + 1;
+ DBGOUT(RX, "RCTL: %d, mac_reg[RCTL] = 0x%x\n", s->mac_reg[RDT],
+ s->mac_reg[RCTL]);
+}
+
+static void
+set_mdic(E1000State *s, int index, uint32_t val)
+{
+ uint32_t data = val & E1000_MDIC_DATA_MASK;
+ uint32_t addr = ((val & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT);
+
+ if ((val & E1000_MDIC_PHY_MASK) >> E1000_MDIC_PHY_SHIFT != 1) // phy #
+ val = s->mac_reg[MDIC] | E1000_MDIC_ERROR;
+ else if (val & E1000_MDIC_OP_READ) {
+ DBGOUT(MDIC, "MDIC read reg 0x%x\n", addr);
+ if (!(phy_regcap[addr] & PHY_R)) {
+ DBGOUT(MDIC, "MDIC read reg %x unhandled\n", addr);
+ val |= E1000_MDIC_ERROR;
+ } else
+ val = (val ^ data) | s->phy_reg[addr];
+ } else if (val & E1000_MDIC_OP_WRITE) {
+ DBGOUT(MDIC, "MDIC write reg 0x%x, value 0x%x\n", addr, data);
+ if (!(phy_regcap[addr] & PHY_W)) {
+ DBGOUT(MDIC, "MDIC write reg %x unhandled\n", addr);
+ val |= E1000_MDIC_ERROR;
+ } else
+ s->phy_reg[addr] = data;
+ }
+ s->mac_reg[MDIC] = val | E1000_MDIC_READY;
+ set_ics(s, 0, E1000_ICR_MDAC);
+}
+
+static uint32_t
+get_eecd(E1000State *s, int index)
+{
+ uint32_t ret = E1000_EECD_PRES|E1000_EECD_GNT | s->eecd_state.old_eecd;
+
+ DBGOUT(EEPROM, "reading eeprom bit %d (reading %d)\n",
+ s->eecd_state.bitnum_out, s->eecd_state.reading);
+ if (!s->eecd_state.reading ||
+ ((s->eeprom_data[(s->eecd_state.bitnum_out >> 4) & 0x3f] >>
+ (s->eecd_state.bitnum_out & 0xf ^ 0xf))) & 1)
+ ret |= E1000_EECD_DO;
+ return ret;
+}
+
+static void
+set_eecd(E1000State *s, int index, uint32_t val)
+{
+ uint32_t oldval = s->eecd_state.old_eecd;
+
+ s->eecd_state.old_eecd = val & (E1000_EECD_SK | E1000_EECD_CS |
+ E1000_EECD_DI|E1000_EECD_FWE_MASK|E1000_EECD_REQ);
+ if (!(E1000_EECD_SK & (val ^ oldval))) // no clock edge
+ return;
+ if (!(E1000_EECD_SK & val)) { // falling edge
+ s->eecd_state.bitnum_out++;
+ return;
+ }
+ if (!(val & E1000_EECD_CS)) { // rising, no CS (EEPROM reset)
+ memset(&s->eecd_state, 0, sizeof s->eecd_state);
+ return;
+ }
+ s->eecd_state.val_in <<= 1;
+ if (val & E1000_EECD_DI)
+ s->eecd_state.val_in |= 1;
+ if (++s->eecd_state.bitnum_in == 9 && !s->eecd_state.reading) {
+ s->eecd_state.bitnum_out = ((s->eecd_state.val_in & 0x3f)<<4)-1;
+ s->eecd_state.reading = (((s->eecd_state.val_in >> 6) & 7) ==
+ EEPROM_READ_OPCODE_MICROWIRE);
+ }
+ DBGOUT(EEPROM, "eeprom bitnum in %d out %d, reading %d\n",
+ s->eecd_state.bitnum_in, s->eecd_state.bitnum_out,
+ s->eecd_state.reading);
+}
+
+static uint32_t
+flash_eerd_read(E1000State *s, int x)
+{
+ unsigned int index, r = s->mac_reg[EERD] & ~E1000_EEPROM_RW_REG_START;
+
+ if ((index = r >> E1000_EEPROM_RW_ADDR_SHIFT) > EEPROM_CHECKSUM_REG)
+ return 0;
+ return (s->eeprom_data[index] << E1000_EEPROM_RW_REG_DATA) |
+ E1000_EEPROM_RW_REG_DONE | r;
+}
+
+static unsigned int
+do_cksum(uint8_t *dp, uint8_t *de)
+{
+ unsigned int bsum[2] = {0, 0}, i, sum;
+
+ for (i = 1; dp < de; bsum[i^=1] += *dp++)
+ ;
+ sum = (bsum[0] << 8) + bsum[1];
+ sum = (sum >> 16) + (sum & 0xffff);
+ return ~(sum + (sum >> 16));
+}
+
+static void
+putsum(uint8_t *data, uint32_t n, uint32_t sloc, uint32_t css, uint32_t cse)
+{
+ if (cse && cse < n)
+ n = cse + 1;
+ if (sloc < n-1)
+ cpu_to_be16wu((uint16_t *)(data + sloc),
+ do_cksum(data + css, data + n));
+}
+
+static void
+xmit_seg(E1000State *s)
+{
+ uint16_t len, *sp;
+ unsigned int frames = s->tx.tso_frames, css, sofar, n;
+ struct e1000_tx *tp = &s->tx;
+
+ if (tp->tse) {
+ css = tp->ipcss;
+ DBGOUT(TXSUM, "frames %d size %d ipcss %d\n",
+ frames, tp->size, css);
+ if (tp->ip) { // IPv4
+ cpu_to_be16wu((uint16_t *)(tp->data+css+2),
+ tp->size - css);
+ cpu_to_be16wu((uint16_t *)(tp->data+css+4),
+ be16_to_cpup((uint16_t *)(tp->data+css+4))+frames);
+ } else // IPv6
+ cpu_to_be16wu((uint16_t *)(tp->data+css+4),
+ tp->size - css);
+ css = tp->tucss;
+ len = tp->size - css;
+ DBGOUT(TXSUM, "tcp %d tucss %d len %d\n", tp->tcp, css, len);
+ if (tp->tcp) {
+ sofar = frames * tp->mss;
+ cpu_to_be32wu((uint32_t *)(tp->data+css+4), // seq
+ be32_to_cpup((uint32_t *)(tp->data+css+4))+sofar);
+ if (tp->paylen - sofar > tp->mss)
+ tp->data[css + 13] &= ~9; // PSH, FIN
+ } else // UDP
+ cpu_to_be16wu((uint16_t *)(tp->data+css+4), len);
+ if (tp->sum_needed & E1000_TXD_POPTS_TXSM) {
+ // add pseudo-header length before checksum calculation
+ sp = (uint16_t *)(tp->data + tp->tucso);
+ cpu_to_be16wu(sp, be16_to_cpup(sp) + len);
+ }
+ tp->tso_frames++;
+ }
+
+ if (tp->sum_needed & E1000_TXD_POPTS_TXSM)
+ putsum(tp->data, tp->size, tp->tucso, tp->tucss, tp->tucse);
+ if (tp->sum_needed & E1000_TXD_POPTS_IXSM)
+ putsum(tp->data, tp->size, tp->ipcso, tp->ipcss, tp->ipcse);
+ qemu_send_packet(s->vc, tp->data, tp->size);
+ s->mac_reg[TPT]++;
+ s->mac_reg[GPTC]++;
+ n = s->mac_reg[TOTL];
+ if ((s->mac_reg[TOTL] += s->tx.size) < n)
+ s->mac_reg[TOTH]++;
+}
+
+static void
+process_tx_desc(E1000State *s, struct e1000_tx_desc *dp)
+{
+ uint32_t txd_lower = le32_to_cpu(dp->lower.data);
+ uint32_t dtype = txd_lower & (E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D);
+ unsigned int split_size = txd_lower & 0xffff, bytes, sz, op;
+ unsigned int msh = 0xfffff, hdr = 0;
+ uint64_t addr;
+ struct e1000_context_desc *xp = (struct e1000_context_desc *)dp;
+ struct e1000_tx *tp = &s->tx;
+
+ if (dtype == E1000_TXD_CMD_DEXT) { // context descriptor
+ op = le32_to_cpu(xp->cmd_and_length);
+ tp->ipcss = xp->lower_setup.ip_fields.ipcss;
+ tp->ipcso = xp->lower_setup.ip_fields.ipcso;
+ tp->ipcse = le16_to_cpu(xp->lower_setup.ip_fields.ipcse);
+ tp->tucss = xp->upper_setup.tcp_fields.tucss;
+ tp->tucso = xp->upper_setup.tcp_fields.tucso;
+ tp->tucse = le16_to_cpu(xp->upper_setup.tcp_fields.tucse);
+ tp->paylen = op & 0xfffff;
+ tp->hdr_len = xp->tcp_seg_setup.fields.hdr_len;
+ tp->mss = le16_to_cpu(xp->tcp_seg_setup.fields.mss);
+ tp->ip = (op & E1000_TXD_CMD_IP) ? 1 : 0;
+ tp->tcp = (op & E1000_TXD_CMD_TCP) ? 1 : 0;
+ tp->tse = (op & E1000_TXD_CMD_TSE) ? 1 : 0;
+ tp->tso_frames = 0;
+ if (tp->tucso == 0) { // this is probably wrong
+ DBGOUT(TXSUM, "TCP/UDP: cso 0!\n");
+ tp->tucso = tp->tucss + (tp->tcp ? 16 : 6);
+ }
+ return;
+ } else if (dtype == (E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D))
+ tp->sum_needed = le32_to_cpu(dp->upper.data) >> 8;
+
+ addr = le64_to_cpu(dp->buffer_addr);
+ if (tp->tse) {
+ hdr = tp->hdr_len;
+ msh = hdr + tp->mss;
+ }
+ do {
+ bytes = split_size;
+ if (tp->size + bytes > msh)
+ bytes = msh - tp->size;
+ cpu_physical_memory_read(addr, tp->data + tp->size, bytes);
+ if ((sz = tp->size + bytes) >= hdr && tp->size < hdr)
+ memmove(tp->header, tp->data, hdr);
+ tp->size = sz;
+ addr += bytes;
+ if (sz == msh) {
+ xmit_seg(s);
+ memmove(tp->data, tp->header, hdr);
+ tp->size = hdr;
+ }
+ } while (split_size -= bytes);
+
+ 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;
+
+ if (index < NWRITEOPS && macreg_writeops[index])
+ macreg_writeops[index](s, index, le32_to_cpu(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,
+ cpu_to_le32(le16_to_cpu(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,
+ cpu_to_le32((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])
+ return cpu_to_le32(macreg_readops[index](s, index));
+ 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 (le32_to_cpu(e1000_mmio_readl(opaque, addr & ~3)) >>
+ (8 * (addr & 3))) & 0xff;
+}
+
+static uint32_t
+e1000_mmio_readw(void *opaque, target_phys_addr_t addr)
+{
+ return cpu_to_le16((le32_to_cpu(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);
+}
diff --git a/qemu/hw/e1000_hw.h b/qemu/hw/e1000_hw.h
new file mode 100644
index 0000000..de6bfb3
--- /dev/null
+++ b/qemu/hw/e1000_hw.h
@@ -0,0 +1,3411 @@
+/*******************************************************************************
+
+ Intel PRO/1000 Linux driver
+ Copyright(c) 1999 - 2006 Intel Corporation.
+
+ This program is free software; you can redistribute it and/or modify it
+ under the terms and conditions of the GNU General Public License,
+ version 2, as published by the Free Software Foundation.
+
+ This program is distributed in the hope it will be useful, but WITHOUT
+ ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ more details.
+
+ You should have received a copy of the GNU General Public License along with
+ this program; if not, write to the Free Software Foundation, Inc.,
+ 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+
+ The full GNU General Public License is included in this distribution in
+ the file called "COPYING".
+
+ Contact Information:
+ Linux NICS <lin...@in...>
+ e1000-devel Mailing List <e10...@li...>
+ Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+
+*******************************************************************************/
+
+/* e1000_hw.h
+ * Structures, enums, and macros for the MAC
+ */
+
+#ifndef _E1000_HW_H_
+#define _E1000_HW_H_
+
+/*
+ * Comment it out since it clashes with some local definitions
+ * #include "e1000_osdep.h"
+ */
+
+
+/* Forward declarations of structures used by the shared code */
+struct e1000_hw;
+struct e1000_hw_stats;
+
+/* Enumerated types specific to the e1000 hardware */
+/* Media Access Controlers */
+typedef enum {
+ e1000_undefined = 0,
+ e1000_82542_rev2_0,
+ e1000_82542_rev2_1,
+ e1000_82543,
+ e1000_82544,
+ e1000_82540,
+ e1000_82545,
+ e1000_82545_rev_3,
+ e1000_82546,
+ e1000_82546_rev_3,
+ e1000_82541,
+ e1000_82541_rev_2,
+ e1000_82547,
+ e1000_82547_rev_2,
+ e1000_82571,
+ e1000_82572,
+ e1000_82573,
+ e1000_80003es2lan,
+ e1000_ich8lan,
+ e1000_num_macs
+} e1000_mac_type;
+
+typedef enum {
+ e1000_eeprom_uninitialized = 0,
+ e1000_eeprom_spi,
+ e1000_eeprom_microwire,
+ e1000_eeprom_flash,
+ e1000_eeprom_ich8,
+ e1000_eeprom_none, /* No NVM support */
+ e1000_num_eeprom_types
+} e1000_eeprom_type;
+
+/* Media Types */
+typedef enum {
+ e1000_media_type_copper = 0,
+ e1000_media_type_fiber = 1,
+ e1000_media_type_internal_serdes = 2,
+ e1000_num_media_types
+} e1000_media_type;
+
+typedef enum {
+ e1000_10_half = 0,
+ e1000_10_full = 1,
+ e1000_100_half = 2,
+ e1000_100_full = 3
+} e1000_speed_duplex_type;
+
+/* Flow Control Settings */
+typedef enum {
+ E1000_FC_NONE = 0,
+ E1000_FC_RX_PAUSE = 1,
+ E1000_FC_TX_PAUSE = 2,
+ E1000_FC_FULL = 3,
+ E1000_FC_DEFAULT = 0xFF
+} e1000_fc_type;
+
+struct e1000_shadow_ram {
+ uint16_t eeprom_word;
+ boolean_t modified;
+};
+
+/* PCI bus types */
+typedef enum {
+ e1000_bus_type_unknown = 0,
+ e1000_bus_type_pci,
+ e1000_bus_type_pcix,
+ e1000_bus_type_pci_express,
+ e1000_bus_type_reserved
+} e1000_bus_type;
+
+/* PCI bus speeds */
+typedef enum {
+ e1000_bus_speed_unknown = 0,
+ e1000_bus_speed_33,
+ e1000_bus_speed_66,
+ e1000_bus_speed_100,
+ e1000_bus_speed_120,
+ e1000_bus_speed_133,
+ e1000_bus_speed_2500,
+ e1000_bus_speed_reserved
+} e1000_bus_speed;
+
+/* PCI bus widths */
+typedef enum {
+ e1000_bus_width_unknown = 0,
+ /* These PCIe values should literally match the possible return values
+ * from config space */
+ e1000_bus_width_pciex_1 = 1,
+ e1000_bus_width_pciex_2 = 2,
+ e1000_bus_width_pciex_4 = 4,
+ e1000_bus_width_32,
+ e1000_bus_width_64,
+ e1000_bus_width_reserved
+} e1000_bus_width;
+
+/* PHY status info structure and supporting enums */
+typedef enum {
+ e1000_cable_length_50 = 0,
+ e1000_cable_length_50_80,
+ e1000_cable_length_80_110,
+ e1000_cable_length_110_140,
+ e1000_cable_length_140,
+ e1000_cable_length_undefined = 0xFF
+} e1000_cable_length;
+
+typedef enum {
+ e1000_gg_cable_length_60 = 0,
+ e1000_gg_cable_length_60_115 = 1,
+ e1000_gg_cable_length_115_150 = 2,
+ e1000_gg_cable_length_150 = 4
+} e1000_gg_cable_length;
+
+typedef enum {
+ e1000_igp_cable_length_10 = 10,
+ e1000_igp_cable_length_20 = 20,
+ e1000_igp_cable_length_30 = 30,
+ e1000_igp_cable_length_40 = 40,
+ e1000_igp_cable_length_50 = 50,
+ e1000_igp_cable_length_60 = 60,
+ e1000_igp_cable_length_70 = 70,
+ e1000_igp_cable_length_80 = 80,
+ e1000_igp_cable_length_90 = 90,
+ e1000_igp_cable_length_100 = 100,
+ e1000_igp_cable_length_110 = 110,
+ e1000_igp_cable_length_115 = 115,
+ e1000_igp_cable_length_120 = 120,
+ e1000_igp_cable_length_130 = 130,
+ e1000_igp_cable_length_140 = 140,
+ e1000_igp_cable_length_150 = 150,
+ e1000_igp_cable_length_160 = 160,
+ e1000_igp_cable_length_170 = 170,
+ e1000_igp_cable_length_180 = 180
+} e1000_igp_cable_length;
+
+typedef enum {
+ e1000_10bt_ext_dist_enable_normal = 0,
+ e1000_10bt_ext_dist_enable_lower,
+ e1000_10bt_ext_dist_enable_undefined = 0xFF
+} e1000_10bt_ext_dist_enable;
+
+typedef enum {
+ e1000_rev_polarity_normal = 0,
+ e1000_rev_polarity_reversed,
+ e1000_rev_polarity_undefined = 0xFF
+} e1000_rev_polarity;
+
+typedef enum {
+ e1000_downshift_normal = 0,
+ e1000_downshift_activated,
+ e1000_downshift_undefined = 0xFF
+} e1000_downshift;
+
+typedef enum {
+ e1000_smart_speed_default = 0,
+ e1000_smart_speed_on,
+ e1000_smart_speed_off
+} e1000_smart_speed;
+
+typedef enum {
+ e1000_polarity_reversal_enabled = 0,
+ e1000_polarity_reversal_disabled,
+ e1000_polarity_reversal_undefined = 0xFF
+} e1000_polarity_reversal;
+
+typedef enum {
+ e1000_auto_x_mode_manual_mdi = 0,
+ e1000_auto_x_mode_manual_mdix,
+ e1000_auto_x_mode_auto1,
+ e1000_auto_x_mode_auto2,
+ e1000_auto_x_mode_undefined = 0xFF
+} e1000_auto_x_mode;
+
+typedef enum {
+ e1000_1000t_rx_status_not_ok = 0,
+ e1000_1000t_rx_status_ok,
+ e1000_1000t_rx_status_undefined = 0xFF
+} e1000_1000t_rx_status;
+
+typedef enum {
+ e1000_phy_m88 = 0,
+ e1000_phy_igp,
+ e1000_phy_igp_2,
+ e1000_phy_gg82563,
+ e1000_phy_igp_3,
+ e1000_phy_ife,
+ e1000_phy_undefined = 0xFF
+} e1000_phy_type;
+
+typedef enum {
+ e1000_ms_hw_default = 0,
+ e1000_ms_force_master,
+ e1000_ms_force_slave,
+ e1000_ms_auto
+} e1000_ms_type;
+
+typedef enum {
+ e1000_ffe_config_enabled = 0,
+ e1000_ffe_config_active,
+ e1000_ffe_config_blocked
+} e1000_ffe_config;
+
+typedef enum {
+ e1000_dsp_config_disabled = 0,
+ e1000_dsp_config_enabled,
+ e1000_dsp_config_activated,
+ e1000_dsp_config_undefined = 0xFF
+} e1000_dsp_config;
+
+struct e1000_phy_info {
+ e1000_cable_length cable_length;
+ e1000_10bt_ext_dist_enable extended_10bt_distance;
+ e1000_rev_polarity cable_polarity;
+ e1000_downshift downshift;
+ e1000_polarity_reversal polarity_correction;
+ e1000_auto_x_mode mdix_mode;
+ e1000_1000t_rx_status local_rx;
+ e1000_1000t_rx_status remote_rx;
+};
+
+struct e1000_phy_stats {
+ uint32_t idle_errors;
+ uint32_t receive_errors;
+};
+
+struct e1000_eeprom_info {
+ e1000_eeprom_type type;
+ uint16_t word_size;
+ uint16_t opcode_bits;
+ uint16_t address_bits;
+ uint16_t delay_usec;
+ uint16_t page_size;
+ boolean_t use_eerd;
+ boolean_t use_eewr;
+};
+
+/* Flex ASF Information */
+#define E1000_HOST_IF_MAX_SIZE 2048
+
+typedef enum {
+ e1000_byte_align = 0,
+ e1000_word_align = 1,
+ e1000_dword_align = 2
+} e1000_align_type;
+
+
+
+/* Error Codes */
+#define E1000_SUCCESS 0
+#define E1000_ERR_EEPROM 1
+#define E1000_ERR_PHY 2
+#define E1000_ERR_CONFIG 3
+#define E1000_ERR_PARAM 4
+#define E1000_ERR_MAC_TYPE 5
+#define E1000_ERR_PHY_TYPE 6
+#define E1000_ERR_RESET 9
+#define E1000_ERR_MASTER_REQUESTS_PENDING 10
+#define E1000_ERR_HOST_INTERFACE_COMMAND 11
+#define E1000_BLK_PHY_RESET 12
+#define E1000_ERR_SWFW_SYNC 13
+
+#define E1000_BYTE_SWAP_WORD(_value) ((((_value) & 0x00ff) << 8) | \
+ (((_value) & 0xff00) >> 8))
+
+/* Function prototypes */
+/* Initialization */
+int32_t e1000_reset_hw(struct e1000_hw *hw);
+int32_t e1000_init_hw(struct e1000_hw *hw);
+int32_t e1000_set_mac_type(struct e1000_hw *hw);
+void e1000_set_media_type(struct e1000_hw *hw);
+
+/* Link Configuration */
+int32_t e1000_setup_link(struct e1000_hw *hw);
+int32_t e1000_phy_setup_autoneg(struct e1000_hw *hw);
+void e1000_config_collision_dist(struct e1000_hw *hw);
+int32_t e1000_check_for_link(struct e1000_hw *hw);
+int32_t e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t *speed, uint16_t *duplex);
+int32_t e1000_force_mac_fc(struct e1000_hw *hw);
+
+/* PHY */
+int32_t e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t *phy_data);
+int32_t e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t data);
+int32_t e1000_phy_hw_reset(struct e1000_hw *hw);
+int32_t e1000_phy_reset(struct e1000_hw *hw);
+int32_t e1000_phy_get_info(struct e1000_hw *hw, struct e1000_phy_info *phy_info);
+int32_t e1000_validate_mdi_setting(struct e1000_hw *hw);
+
+void e1000_phy_powerdown_workaround(struct e1000_hw *hw);
+
+/* EEPROM Functions */
+int32_t e1000_init_eeprom_params(struct e1000_hw *hw);
+
+/* MNG HOST IF functions */
+uint32_t e1000_enable_mng_pass_thru(struct e1000_hw *hw);
+
+#define E1000_MNG_DHCP_TX_PAYLOAD_CMD 64
+#define E1000_HI_MAX_MNG_DATA_LENGTH 0x6F8 /* Host Interface data length */
+
+#define E1000_MNG_DHCP_COMMAND_TIMEOUT 10 /* Time in ms to process MNG command */
+#define E1000_MNG_DHCP_COOKIE_OFFSET 0x6F0 /* Cookie offset */
+#define E1000_MNG_DHCP_COOKIE_LENGTH 0x10 /* Cookie length */
+#define E1000_MNG_IAMT_MODE 0x3
+#define E1000_MNG_ICH_IAMT_MODE 0x2
+#define E1000_IAMT_SIGNATURE 0x544D4149 /* Intel(R) Active Management Technology signature */
+
+#define E1000_MNG_DHCP_COOKIE_STATUS_PARSING_SUPPORT 0x1 /* DHCP parsing enabled */
+#define E1000_MNG_DHCP_COOKIE_STATUS_VLAN_SUPPORT 0x2 /* DHCP parsing enabled */
+#define E1000_VFTA_ENTRY_SHIFT 0x5
+#define E1000_VFTA_ENTRY_MASK 0x7F
+#define E1000_VFTA_ENTRY_BIT_SHIFT_MASK 0x1F
+
+struct e1000_host_mng_command_header {
+ uint8_t command_id;
+ uint8_t checksum;
+ uint16_t reserved1;
+ uint16_t reserved2;
+ uint16_t command_length;
+};
+
+struct e1000_host_mng_command_info {
+ struct e1000_host_mng_command_header command_header; /* Command Head/Command Result Head has 4 bytes */
+ uint8_t command_data[E1000_HI_MAX_MNG_DATA_LENGTH]; /* Command data can length 0..0x658*/
+};
+#ifdef __BIG_ENDIAN
+struct e1000_host_mng_dhcp_cookie{
+ uint32_t signature;
+ uint16_t vlan_id;
+ uint8_t reserved0;
+ uint8_t status;
+ uint32_t reserved1;
+ uint8_t checksum;
+ uint8_t reserved3;
+ uint16_t reserved2;
+};
+#else
+struct e1000_host_mng_dhcp_cookie{
+ uint32_t signature;
+ uint8_t status;
+ uint8_t reserved0;
+ uint16_t vlan_id;
+ uint32_t reserved1;
+ uint16_t reserved2;
+ uint8_t reserved3;
+ uint8_t checksum;
+};
+#endif
+
+int32_t e1000_mng_write_dhcp_info(struct e1000_hw *hw, uint8_t *buffer,
+ uint16_t length);
+boolean_t e1000_check_mng_mode(struct e1000_hw *hw);
+boolean_t e1000_enable_tx_pkt_filtering(struct e1000_hw *hw);
+int32_t e1000_read_eeprom(struct e1000_hw *hw, uint16_t reg, uint16_t words, uint16_t *data);
+int32_t e1000_validate_eeprom_checksum(struct e1000_hw *hw);
+int32_t e1000_update_eeprom_checksum(struct e1000_hw *hw);
+int32_t e1000_write_eeprom(struct e1000_hw *hw, uint16_t reg, uint16_t words, uint16_t *data);
+int32_t e1000_read_mac_addr(struct e1000_hw * hw);
+
+/* Filters (multicast, vlan, receive) */
+uint32_t e1000_hash_mc_addr(struct e1000_hw *hw, uint8_t * mc_addr);
+void e1000_mta_set(struct e1000_hw *hw, uint32_t hash_value);
+void e1000_rar_set(struct e1000_hw *hw, uint8_t * mc_addr, uint32_t rar_index);
+void e1000_write_vfta(struct e1000_hw *hw, uint32_t offset, uint32_t value);
+
+/* LED functions */
+int32_t e1000_setup_led(struct e1000_hw *hw);
+int32_t e1000_cleanup_led(struct e1000_hw *hw);
+int32_t e1000_led_on(struct e1000_hw *hw);
+int32_t e1000_led_off(struct e1000_hw *hw);
+int32_t e1000_blink_led_start(struct e1000_hw *hw);
+
+/* Adaptive IFS Functions */
+
+/* Everything else */
+void e1000_reset_adaptive(struct e1000_hw *hw);
+void e1000_update_adaptive(struct e1000_hw *hw);
+void e1000_tbi_adjust_stats(struct e1000_hw *hw, struct e1000_hw_stats *stats, uint32_t frame_len, uint8_t * mac_addr);
+void e1000_get_bus_info(struct e1000_hw *hw);
+void e1000_pci_set_mwi(struct e1000_hw *hw);
+void e1000_pci_clear_mwi(struct e1000_hw *hw);
+void e1000_read_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t * value);
+void e1000_write_pci_cfg(struct e1000_hw *hw, uint32_t reg, uint16_t * value);
+int32_t e1000_read_pcie_cap_reg(struct e1000_hw *hw, uint32_t reg, uint16_t *value);
+void e1000_pcix_set_mmrbc(struct e1000_hw *hw, int mmrbc);
+int e1000_pcix_get_mmrbc(struct e1000_hw *hw);
+/* Port I/O is only supported on 82544 and newer */
+void e1000_io_write(struct e1000_hw *hw, unsigned long port, uint32_t value);
+int32_t e1000_disable_pciex_master(struct e1000_hw *hw);
+int32_t e1000_check_phy_reset_block(struct e1000_hw *hw);
+
+
+#define E1000_READ_REG_IO(a, reg) \
+ e1000_read_reg_io((a), E1000_##reg)
+#define E1000_WRITE_REG_IO(a, reg, val) \
+ e1000_write_reg_io((a), E1000_##reg, val)
+
+/* PCI Device IDs */
+#define E1000_DEV_ID_82542 0x1000
+#define E1000_DEV_ID_82543GC_FIBER 0x1001
+#define E1000_DEV_ID_82543GC_COPPER 0x1004
+#define E1000_DEV_ID_82544EI_COPPER 0x1008
+#define E1000_DEV_ID_82544EI_FIBER 0x1009
+#define E1000_DEV_ID_82544GC_COPPER 0x100C
+#define E1000_DEV_ID_82544GC_LOM 0x100D
+#define E1000_DEV_ID_82540EM 0x100E
+#define E1000_DEV_ID_82540EM_LOM 0x1015
+#define E1000_DEV_ID_82540EP_LOM 0x1016
+#define E1000_DEV_ID_82540EP 0x1017
+#define E1000_DEV_ID_82540EP_LP 0x101E
+#define E1000_DEV_ID_82545EM_COPPER 0x100F
+#define E1000_DEV_ID_82545EM_FIBER 0x1011
+#define E1000_DEV_ID_82545GM_COPPER 0x1026
+#define E1000_DEV_ID_82545GM_FIBER 0x1027
+#define E1000_DEV_ID_82545GM_SERDES 0x1028
+#define E1000_DEV_ID_82546EB_COPPER 0x1010
+#define E1000_DEV_ID_82546EB_FIBER 0x1012
+#define E1000_DEV_ID_82546EB_QUAD_COPPER 0x101D
+#define E1000_DEV_ID_82541EI 0x1013
+#define E1000_DEV_ID_82541EI_MOBILE 0x1018
+#define E1000_DEV_ID_82541ER_LOM 0x1014
+#define E1000_DEV_ID_82541ER 0x1078
+#define E1000_DEV_ID_82547GI 0x1075
+#define E1000_DEV_ID_82541GI 0x1076
+#define E1000_DEV_ID_82541GI_MOBILE 0x1077
+#define E1000_DEV_ID_82541GI_LF 0x107C
+#define E1000_DEV_ID_82546GB_COPPER 0x1079
+#define E1000_DEV_ID_82546GB_FIBER 0x107A
+#define E1000_DEV_ID_82546GB_SERDES 0x107B
+#define E1000_DEV_ID_82546GB_PCIE 0x108A
+#define E1000_DEV_ID_82546GB_QUAD_COPPER 0x1099
+#define E1000_DEV_ID_82547EI 0x1019
+#define E1000_DEV_ID_82547EI_MOBILE 0x101A
+#define E1000_DEV_ID_82571EB_COPPER 0x105E
+#define E1000_DEV_ID_82571EB_FIBER 0x105F
+#define E1000_DEV_ID_82571EB_SERDES 0x1060
+#define E1000_DEV_ID_82571EB_QUAD_COPPER 0x10A4
+#define E1000_DEV_ID_82571PT_QUAD_COPPER 0x10D5
+#define E1000_DEV_ID_82571EB_QUAD_FIBER 0x10A5
+#define E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE 0x10BC
+#define E1000_DEV_ID_82571EB_SERDES_DUAL 0x10D9
+#define E1000_DEV_ID_82571EB_SERDES_QUAD 0x10DA
+#define E1000_DEV_ID_82572EI_COPPER 0x107D
+#define E1000_DEV_ID_82572EI_FIBER 0x107E
+#define E1000_DEV_ID_82572EI_SERDES 0x107F
+#define E1000_DEV_ID_82572EI 0x10B9
+#define E1000_DEV_ID_82573E 0x108B
+#define E1000_DEV_ID_82573E_IAMT 0x108C
+#define E1000_DEV_ID_82573L 0x109A
+#define E1000_DEV_ID_82546GB_QUAD_COPPER_KSP3 0x10B5
+#define E1000_DEV_ID_80003ES2LAN_COPPER_DPT 0x1096
+#define E1000_DEV_ID_80003ES2LAN_SERDES_DPT 0x1098
+#define E1000_DEV_ID_80003ES2LAN_COPPER_SPT 0x10BA
+#define E1000_DEV_ID_80003ES2LAN_SERDES_SPT 0x10BB
+
+#define E1000_DEV_ID_ICH8_IGP_M_AMT 0x1049
+#define E1000_DEV_ID_ICH8_IGP_AMT 0x104A
+#define E1000_DEV_ID_ICH8_IGP_C 0x104B
+#define E1000_DEV_ID_ICH8_IFE 0x104C
+#define E1000_DEV_ID_ICH8_IFE_GT 0x10C4
+#define E1000_DEV_ID_ICH8_IFE_G 0x10C5
+#define E1000_DEV_ID_ICH8_IGP_M 0x104D
+
+
+#define NODE_ADDRESS_SIZE 6
+#define ETH_LENGTH_OF_ADDRESS 6
+
+/* MAC decode size is 128K - This is the size of BAR0 */
+#define MAC_DECODE_SIZE (128 * 1024)
+
+#define E1000_82542_2_0_REV_ID 2
+#define E1000_82542_2_1_REV_ID 3
+#define E1000_REVISION_0 0
+#define E1000_REVISION_1 1
+#define E1000_REVISION_2 2
+#define E1000_REVISION_3 3
+
+#define SPEED_10 10
+#define SPEED_100 100
+#define SPEED_1000 1000
+#define HALF_DUPLEX 1
+#define FULL_DUPLEX 2
+
+/* The sizes (in bytes) of a ethernet packet */
+#define ENET_HEADER_SIZE 14
+#define MAXIMUM_ETHERNET_FRAME_SIZE 1518 /* With FCS */
+#define MINIMUM_ETHERNET_FRAME_SIZE 64 /* With FCS */
+#define ETHERNET_FCS_SIZE 4
+#define MAXIMUM_ETHERNET_PACKET_SIZE \
+ (MAXIMUM_ETHERNET_FRAME_SIZE - ETHERNET_FCS_SIZE)
+#define MINIMUM_ETHERNET_PACKET_SIZE \
+ (MINIMUM_ETHERNET_FRAME_SIZE - ETHERNET_FCS_SIZE)
+#define CRC_LENGTH ETHERNET_FCS_SIZE
+#define MAX_JUMBO_FRAME_SIZE 0x3F00
+
+
+/* 802.1q VLAN Packet Sizes */
+#define VLAN_TAG_SIZE 4 /* 802.3ac tag (not DMAed) */
+
+/* Ethertype field values */
+#define ETHERNET_IEEE_VLAN_TYPE 0x8100 /* 802.3ac packet */
+#define ETHERNET_IP_TYPE 0x0800 /* IP packets */
+#define ETHERNET_ARP_TYPE 0x0806 /* Address Resolution Protocol (ARP) */
+
+/* Packet Header defines */
+#define IP_PROTOCOL_TCP 6
+#define IP_PROTOCOL_UDP 0x11
+
+/* This defines the bits that are set in the Interrupt Mask
+ * Set/Read Register. Each bit is documented below:
+ * o RXDMT0 = Receive Descriptor Minimum Threshold hit (ring 0)
+ * o RXSEQ = Receive Sequence Error
+ */
+#define POLL_IMS_ENABLE_MASK ( \
+ E1000_IMS_RXDMT0 | \
+ E1000_IMS_RXSEQ)
+
+/* This defines the bits that are set in the Interrupt Mask
+ * Set/Read Register. Each bit is documented below:
+ * o RXT0 = Receiver Timer Interrupt (ring 0)
+ * o TXDW = Transmit Descriptor Written Back
+ * o RXDMT0 = Receive Descriptor Minimum Threshold hit (ring 0)
+ * o RXSEQ = Receive Sequence Error
+ * o LSC = Link Status Change
+ */
+#define IMS_ENABLE_MASK ( \
+ E1000_IMS_RXT0 | \
+ E1000_IMS_TXDW | \
+ E1000_IMS_RXDMT0 | \
+ E1000_IMS_RXSEQ | \
+ E1000_IMS_LSC)
+
+/* Additional interrupts need to be handled for e1000_ich8lan:
+ DSW = The FW changed the status of the DISSW bit in FWSM
+ PHYINT = The LAN connected device generates an interrupt
+ EPRST = Manageability reset event */
+#define IMS_ICH8LAN_ENABLE_MASK (\
+ E1000_IMS_DSW | \
+ E1000_IMS_PHYINT | \
+ E1000_IMS_EPRST)
+
+/* Number of high/low register pairs in the RAR. The RAR (Receive Address
+ * Registers) holds the directed and multicast addresses that we monitor. We
+ * reserve one of these spots for our directed address, allowing us room for
+ * E1000_RAR_ENTRIES - 1 multicast addresses.
+ */
+#define E1000_RAR_ENTRIES 15
+
+#define E1000_RAR_ENTRIES_ICH8LAN 6
+
+#define MIN_NUMBER_OF_DESCRIPTORS 8
+#define MAX_NUMBER_OF_DESCRIPTORS 0xFFF8
+
+/* Receive Descriptor */
+struct e1000_rx_desc {
+ uint64_t buffer_addr; /* Address of the descriptor's data buffer */
+ uint16_t length; /* Length of data DMAed into data buffer */
+ uint16_t csum; /* Packet checksum */
+ uint8_t status; /* Descriptor status */
+ uint8_t errors; /* Descriptor Errors */
+ uint16_t special;
+};
+
+/* Receive Descriptor - Extended */
+union e1000_rx_desc_extended {
+ struct {
+ uint64_t buffer_addr;
+ uint64_t reserved;
+ } read;
+ struct {
+ struct {
+ uint32_t mrq; /* Multiple Rx Queues */
+ union {
+ uint32_t rss; /* RSS Hash */
+ struct {
+ uint16_t ip_id; /* IP id */
+ uint16_t csum; /* Packet Checksum */
+ } csum_ip;
+ } hi_dword;
+ } lower;
+ struct {
+ uint32_t status_error; /* ext status/error */
+ uint16_t length;
+ uint16_t vlan; /* VLAN tag */
+ } upper;
+ } wb; /* writeback */
+};
+
+#define MAX_PS_BUFFERS 4
+/* Receive Descriptor - Packet Split */
+union e1000_rx_desc_packet_split {
+ struct {
+ /* one buffer for protocol header(s), three data buffers */
+ uint64_t buffer_addr[MAX_PS_BUFFERS];
+ } read;
+ struct {
+ struct {
+ uint32_t mrq; /* Multiple Rx Queues */
+ union {
+ uint32_t rss; /* RSS Hash */
+ struct {
+ uint16_t ip_id; /* IP id */
+ uint16_t csum; /* Packet Checksum */
+ } csum_ip;
+ } hi_dword;
+ } lower;
+ struct {
+ uint32_t status_error; /* ext status/error */
+ uint16_t length0; /* length of buffer 0 */
+ uint16_t vlan; /* VLAN tag */
+ } middle;
+ struct {
+ uint16_t header_status;
+ uint16_t length[3]; /* length of buffers 1-3 */
+ } upper;
+ uint64_t reserved;
+ } wb; /* writeback */
+};
+
+/* Receive Decriptor bit definitions */
+#define E1000_RXD_STAT_DD 0x01 /* Descriptor Done */
+#define E1000_RXD_STAT_EOP 0x02 /* End of Packet */
+#define E1000_RXD_STAT_IXSM 0x04 /* Ignore checksum */
+#define E1000_RXD_STAT_VP 0x08 /* IEEE VLAN Packet */
+#define E1000_RXD_STAT_UDPCS 0x10 /* UDP xsum caculated */
+#define E1000_RXD_STAT_TCPCS 0x20 /* TCP xsum calculated */
+#define E1000_RXD_STAT_IPCS 0x40 /* IP xsum calculated */
+#define E1000_RXD_STAT_PIF 0x80 /* passed in-exact filter */
+#define E1000_RXD_STAT_IPIDV 0x200 /* IP identification valid */
+#define E1000_RXD_STAT_UDPV 0x400 /* Valid UDP checksum */
+#define E1000_RXD_STAT_ACK 0x8000 /* ACK Packet indication */
+#define E1000_RXD_ERR_CE 0x01 /* CRC Error */
+#define E1000_RXD_ERR_SE 0x02 /* Symbol Error */
+#define E1000_RXD_ERR_SEQ 0x04 /* Sequence Error */
+#define E1000_RXD_ERR_CXE 0x10 /* Carrier Extension Error */
+#define E1000_RXD_ERR_TCPE 0x20 /* TCP/UDP Checksum Error */
+#define E1000_RXD_ERR_IPE 0x40 /* IP Checksum Error */
+#define E1000_RXD_ERR_RXE 0x80 /* Rx Data Error */
+#define E1000_RXD_SPC_VLAN_MASK 0x0FFF /* VLAN ID is in lower 12 bits */
+#define E1000_RXD_SPC_PRI_MASK 0xE000 /* Priority is in upper 3 bits */
+#define E1000_RXD_SPC_PRI_SHIFT 13
+#define E1000_RXD_SPC_CFI_MASK 0x1000 /* CFI is bit 12 */
+#define E1000_RXD_SPC_CFI_SHIFT 12
+
+#define E1000_RXDEXT_STATERR_CE 0x01000000
+#define E1000_RXDEXT_STATERR_SE 0x02000000
+#define E1000_RXDEXT_STATERR_SEQ 0x04000000
+#define E1000_RXDEXT_STATERR_CXE 0x10000000
+#define E1000_RXDEXT_STATERR_TCPE 0x20000000
+#define E1000_RXDEXT_STATERR_IPE 0x40000000
+#define E1000_RXDEXT_STATERR_RXE 0x80000000
+
+#define E1000_RXDPS_HDRSTAT_HDRSP 0x00008000
+#define E1000_RXDPS_HDRSTAT_HDRLEN_MASK 0x000003FF
+
+/* mask to determine if packets should be dropped due to frame errors */
+#define E1000_RXD_ERR_FRAME_ERR_MASK ( \
+ E1000_RXD_ERR_CE | \
+ E1000_RXD_ERR_SE | \
+ E1000_RXD_ERR_SEQ | \
+ E1000_RXD_ERR_CXE | \
+ E1000_RXD_ERR_RXE)
+
+
+/* Same mask, but for extended and packet split descriptors */
+#define E1000_RXDEXT_ERR_FRAME_ERR_MASK ( \
+ E1000_RXDEXT_STATERR_CE | \
+ E1000_RXDEXT_STATERR_SE | \
+ E1000_RXDEXT_STATERR_SEQ | \
+ E1000_RXDEXT_STATERR_CXE | \
+ E1000_RXDEXT_STATERR_RXE)
+
+
+/* Transmit Descriptor */
+struct e1000_tx_desc {
+ uint64_t buffer_addr; /* Address of the descriptor's data buffer */
+ union {
+ uint32_t data;
+ struct {
+ uint16_t length; /* Data buffer length */
+ uint8_t cso; /* Checksum offset */
+ uint8_t cmd; /* Descriptor control */
+ } flags;
+ } lower;
+ union {
+ uint32_t data;
+ struct {
+ uint8_t status; /* Descriptor status */
+ uint8_t css; /* Checksum start */
+ uint16_t special;
+ } fields;
+ } upper;
+};
+
+/* Transmit Descriptor bit definitions */
+#define E1000_TXD_DTYP_D 0x00100000 /* Data Descriptor */
+#define E1000_TXD_DTYP_C 0x00000000 /* Context Descriptor */
+#define E1000_TXD_POPTS_IXSM 0x01 /* Insert IP checksum */
+#define E1000_TXD_POPTS_TXSM 0x02 /* Insert TCP/UDP checksum */
+#define E1000_TXD_CMD_EOP 0x01000000 /* End of Packet */
+#define E1000_TXD_CMD_IFCS 0x02000000 /* Insert FCS (Ethernet CRC) */
+#define E1000_TXD_CMD_IC 0x04000000 /* Insert Checksum */
+#define E1000_TXD_CMD_RS 0x08000000 /* Report Status */
+#define E1000_TXD_CMD_RPS 0x10000000 /* Report Packet Sent */
+#define E1000_TXD_CMD_DEXT 0x20000000 /* Descriptor extension (0 = legacy) */
+#define E1000_TXD_CMD_VLE 0x40000000 /* Add VLAN tag */
+#define E1000_TXD_CMD_IDE 0x80000000 /* Enable Tidv register */
+#define E1000_TXD_STAT_DD 0x00000001 /* Descriptor Done */
+#define E1000_TXD_STAT_EC 0x00000002 /* Excess Collisions */
+#define E1000_TXD_STAT_LC 0x00000004 /* Late Collisions */
+#define E1000_TXD_STAT_TU 0x00000008 /* Transmit underrun */
+#define E1000_TXD_CMD_TCP 0x01000000 /* TCP packet */
+#define E1000_TXD_CMD_IP 0x02000000 /* IP packet */
+#define E1000_TXD_CMD_TSE 0x04000000 /* TCP Seg enable */
+#define E1000_TXD_STAT_TC 0x00000004 /* Tx Underrun */
+
+/* Offload Context Descriptor */
+struct e1000_context_desc {
+ union {
+ uint32_t ip_config;
+ struct {
+ uint8_t ipcss; /* IP checksum start */
+ uint8_t ipcso; /* IP checksum offset */
+ uint16_t ipcse; /* IP checksum end */
+ } ip_fields;
+ } lower_setup;
+ union {
+ uint32_t tcp_config;
+ struct {
+ uint8_t tucss; /* TCP checksum start */
+ uint8_t tucso; /* TCP checksum offset */
+ uint16_t tucse; /* TCP checksum end */
+ } tcp_fields;
+ } upper_setup;
+ uint32_t cmd_and_length; /* */
+ union {
+ uint32_t data;
+ struct {
+ uint8_t status; /* Descriptor status */
+ uint8_t hdr_len; /* Header length */
+ uint16_t mss; /* Maximum segment size */
+ } fields;
+ } tcp_seg_setup;
+};
+
+/* Offload data descriptor */
+struct e1000_data_desc {
+ uint64_t buffer_addr; /* Address of the descriptor's buffer address */
+ union {
+ uint32_t data;
+ struct {
+ uint16_t length; /* Data buffer length */
+ uint8_t typ_len_ext; /* */
+ uint8_t cmd; /* */
+ } flags;
+ } lower;
+ union {
+ uint32_t data;
+ struct {
+ uint8_t status; /* Descriptor status */
+ uint8_t popts; /* Packet Options */
+ uint16_t special; /* */
+ } fields;
+ } upper;
+};
+
+/* Filters */
+#define E1000_NUM_UNICAST 16 /* Unicast filter entries...
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