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qemu-patch-raspberry4/hw/eepro100.c
Stefan Weil 3706c43f02 eepro100: Remove unused device status entries 
Once upon the time when QEMU hacking was fun
there was a brave knight who wanted to have
a driver for a special intel nic.

So he started by cloning ne2000.c which also
meant that the new born eepro100.c was
immediately three years old.

Other knights who also wanted to have fun and
take their part in the battle thought that it
would be a good idea to remove stupid code
which says "missing nic load, missing nic save".

They saved everything they saw, man and women,
ne2000 code and runtime address offsets, and
put all saved elements in a prison called
vm data.

When the first knight came back and noticed
the unhappy prisoners, he wanted to set them
free. But the keepers of the keys told him
that they would have to stay there forever
for compatibility reasons.

So our brave knight now takes a new effort
to save the souls of the poor prisoners by
removing their names.

Their bodies will have to rot in the dungeons
of compatibility forever, watched by the
keepers of the keys.

Patchworks-ID: 35635
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-15 09:32:00 -05:00

1916 lines
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/*
* QEMU i8255x (PRO100) emulation
*
* Copyright (c) 2006-2007 Stefan Weil
*
* Portions of the code are copies from grub / etherboot eepro100.c
* and linux e100.c.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that 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, see <http://www.gnu.org/licenses/>.
*
* Tested features (i82559):
* PXE boot (i386) no valid link
* Linux networking (i386) ok
*
* Untested:
* non-i386 platforms
* Windows networking
*
* References:
*
* Intel 8255x 10/100 Mbps Ethernet Controller Family
* Open Source Software Developer Manual
*/
#if defined(TARGET_I386)
# warning "PXE boot still not working!"
#endif
#include <stddef.h> /* offsetof */
#include <stdbool.h>
#include "hw.h"
#include "pci.h"
#include "net.h"
#include "eeprom93xx.h"
/* Common declarations for all PCI devices. */
#define PCI_CONFIG_8(offset, value) \
(pci_conf[offset] = (value))
#define PCI_CONFIG_16(offset, value) \
(*(uint16_t *)&pci_conf[offset] = cpu_to_le16(value))
#define PCI_CONFIG_32(offset, value) \
(*(uint32_t *)&pci_conf[offset] = cpu_to_le32(value))
#define KiB 1024
/* Debug EEPRO100 card. */
//~ #define DEBUG_EEPRO100
#ifdef DEBUG_EEPRO100
#define logout(fmt, ...) fprintf(stderr, "EE100\t%-24s" fmt, __func__, ## __VA_ARGS__)
#else
#define logout(fmt, ...) ((void)0)
#endif
/* Set flags to 0 to disable debug output. */
#define INT 1 /* interrupt related actions */
#define MDI 1 /* mdi related actions */
#define OTHER 1
#define RXTX 1
#define EEPROM 1 /* eeprom related actions */
#define TRACE(flag, command) ((flag) ? (command) : (void)0)
#define missing(text) fprintf(stderr, "eepro100: feature is missing in this emulation: " text "\n")
#define MAX_ETH_FRAME_SIZE 1514
/* This driver supports several different devices which are declared here. */
#define i82550 0x82550
#define i82551 0x82551
#define i82557A 0x82557a
#define i82557B 0x82557b
#define i82557C 0x82557c
#define i82558A 0x82558a
#define i82558B 0x82558b
#define i82559A 0x82559a
#define i82559B 0x82559b
#define i82559C 0x82559c
#define i82559ER 0x82559e
#define i82562 0x82562
/* Use 64 word EEPROM. TODO: could be a runtime option. */
#define EEPROM_SIZE 64
#define PCI_MEM_SIZE (4 * KiB)
#define PCI_IO_SIZE 64
#define PCI_FLASH_SIZE (128 * KiB)
#define BIT(n) (1 << (n))
#define BITS(n, m) (((0xffffffffU << (31 - n)) >> (31 - n + m)) << m)
/* The SCB accepts the following controls for the Tx and Rx units: */
#define CU_NOP 0x0000 /* No operation. */
#define CU_START 0x0010 /* CU start. */
#define CU_RESUME 0x0020 /* CU resume. */
#define CU_STATSADDR 0x0040 /* Load dump counters address. */
#define CU_SHOWSTATS 0x0050 /* Dump statistical counters. */
#define CU_CMD_BASE 0x0060 /* Load CU base address. */
#define CU_DUMPSTATS 0x0070 /* Dump and reset statistical counters. */
#define CU_SRESUME 0x00a0 /* CU static resume. */
#define RU_NOP 0x0000
#define RX_START 0x0001
#define RX_RESUME 0x0002
#define RX_ABORT 0x0004
#define RX_ADDR_LOAD 0x0006
#define RX_RESUMENR 0x0007
#define INT_MASK 0x0100
#define DRVR_INT 0x0200 /* Driver generated interrupt. */
/* Offsets to the various registers.
All accesses need not be longword aligned. */
enum speedo_offsets {
SCBStatus = 0,
SCBAck = 1,
SCBCmd = 2, /* Rx/Command Unit command and status. */
SCBIntmask = 3,
SCBPointer = 4, /* General purpose pointer. */
SCBPort = 8, /* Misc. commands and operands. */
SCBflash = 12, SCBeeprom = 14, /* EEPROM and flash memory control. */
SCBCtrlMDI = 16, /* MDI interface control. */
SCBEarlyRx = 20, /* Early receive byte count. */
SCBFlow = 24,
};
/* A speedo3 transmit buffer descriptor with two buffers... */
typedef struct {
uint16_t status;
uint16_t command;
uint32_t link; /* void * */
uint32_t tx_desc_addr; /* transmit buffer decsriptor array address. */
uint16_t tcb_bytes; /* transmit command block byte count (in lower 14 bits */
uint8_t tx_threshold; /* transmit threshold */
uint8_t tbd_count; /* TBD number */
//~ /* This constitutes two "TBD" entries: hdr and data */
//~ uint32_t tx_buf_addr0; /* void *, header of frame to be transmitted. */
//~ int32_t tx_buf_size0; /* Length of Tx hdr. */
//~ uint32_t tx_buf_addr1; /* void *, data to be transmitted. */
//~ int32_t tx_buf_size1; /* Length of Tx data. */
} eepro100_tx_t;
/* Receive frame descriptor. */
typedef struct {
int16_t status;
uint16_t command;
uint32_t link; /* struct RxFD * */
uint32_t rx_buf_addr; /* void * */
uint16_t count;
uint16_t size;
char packet[MAX_ETH_FRAME_SIZE + 4];
} eepro100_rx_t;
typedef struct {
uint32_t tx_good_frames, tx_max_collisions, tx_late_collisions,
tx_underruns, tx_lost_crs, tx_deferred, tx_single_collisions,
tx_multiple_collisions, tx_total_collisions;
uint32_t rx_good_frames, rx_crc_errors, rx_alignment_errors,
rx_resource_errors, rx_overrun_errors, rx_cdt_errors,
rx_short_frame_errors;
uint32_t fc_xmt_pause, fc_rcv_pause, fc_rcv_unsupported;
uint16_t xmt_tco_frames, rcv_tco_frames;
uint32_t complete;
} eepro100_stats_t;
typedef enum {
cu_idle = 0,
cu_suspended = 1,
cu_active = 2,
cu_lpq_active = 2,
cu_hqp_active = 3
} cu_state_t;
typedef enum {
ru_idle = 0,
ru_suspended = 1,
ru_no_resources = 2,
ru_ready = 4
} ru_state_t;
typedef struct {
PCIDevice dev;
uint8_t mult[8]; /* multicast mask array */
int mmio_index;
VLANClientState *vc;
uint8_t scb_stat; /* SCB stat/ack byte */
uint8_t int_stat; /* PCI interrupt status */
/* region must not be saved by nic_save. */
uint32_t region[3]; /* PCI region addresses */
uint8_t macaddr[6];
uint16_t mdimem[32];
eeprom_t *eeprom;
uint32_t device; /* device variant */
uint32_t pointer;
/* (cu_base + cu_offset) address the next command block in the command block list. */
uint32_t cu_base; /* CU base address */
uint32_t cu_offset; /* CU address offset */
/* (ru_base + ru_offset) address the RFD in the Receive Frame Area. */
uint32_t ru_base; /* RU base address */
uint32_t ru_offset; /* RU address offset */
uint32_t statsaddr; /* pointer to eepro100_stats_t */
eepro100_stats_t statistics; /* statistical counters */
#if 0
uint16_t status;
#endif
/* Configuration bytes. */
uint8_t configuration[22];
/* Data in mem is always in the byte order of the controller (le). */
uint8_t mem[PCI_MEM_SIZE];
} EEPRO100State;
/* Default values for MDI (PHY) registers */
static const uint16_t eepro100_mdi_default[] = {
/* MDI Registers 0 - 6, 7 */
0x3000, 0x780d, 0x02a8, 0x0154, 0x05e1, 0x0000, 0x0000, 0x0000,
/* MDI Registers 8 - 15 */
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
/* MDI Registers 16 - 31 */
0x0003, 0x0000, 0x0001, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
};
/* Readonly mask for MDI (PHY) registers */
static const uint16_t eepro100_mdi_mask[] = {
0x0000, 0xffff, 0xffff, 0xffff, 0xc01f, 0xffff, 0xffff, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0fff, 0x0000, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff,
0xffff, 0xffff, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
};
#define POLYNOMIAL 0x04c11db6
/* From FreeBSD */
/* XXX: optimize */
static int compute_mcast_idx(const uint8_t * ep)
{
uint32_t crc;
int carry, i, j;
uint8_t b;
crc = 0xffffffff;
for (i = 0; i < 6; i++) {
b = *ep++;
for (j = 0; j < 8; j++) {
carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01);
crc <<= 1;
b >>= 1;
if (carry) {
crc = ((crc ^ POLYNOMIAL) | carry);
}
}
}
return (crc >> 26);
}
#if defined(DEBUG_EEPRO100)
static const char *nic_dump(const uint8_t * buf, unsigned size)
{
static char dump[3 * 16 + 1];
char *p = &dump[0];
if (size > 16) {
size = 16;
}
while (size-- > 0) {
p += sprintf(p, " %02x", *buf++);
}
return dump;
}
#endif /* DEBUG_EEPRO100 */
enum scb_stat_ack {
stat_ack_not_ours = 0x00,
stat_ack_sw_gen = 0x04,
stat_ack_rnr = 0x10,
stat_ack_cu_idle = 0x20,
stat_ack_frame_rx = 0x40,
stat_ack_cu_cmd_done = 0x80,
stat_ack_not_present = 0xFF,
stat_ack_rx = (stat_ack_sw_gen | stat_ack_rnr | stat_ack_frame_rx),
stat_ack_tx = (stat_ack_cu_idle | stat_ack_cu_cmd_done),
};
static void disable_interrupt(EEPRO100State * s)
{
if (s->int_stat) {
TRACE(INT, logout("interrupt disabled\n"));
qemu_irq_lower(s->dev.irq[0]);
s->int_stat = 0;
}
}
static void enable_interrupt(EEPRO100State * s)
{
if (!s->int_stat) {
TRACE(INT, logout("interrupt enabled\n"));
qemu_irq_raise(s->dev.irq[0]);
s->int_stat = 1;
}
}
static void eepro100_acknowledge(EEPRO100State * s)
{
s->scb_stat &= ~s->mem[SCBAck];
s->mem[SCBAck] = s->scb_stat;
if (s->scb_stat == 0) {
disable_interrupt(s);
}
}
static void eepro100_interrupt(EEPRO100State * s, uint8_t stat)
{
uint8_t mask = ~s->mem[SCBIntmask];
s->mem[SCBAck] |= stat;
stat = s->scb_stat = s->mem[SCBAck];
stat &= (mask | 0x0f);
//~ stat &= (~s->mem[SCBIntmask] | 0x0xf);
if (stat && (mask & 0x01)) {
/* SCB mask and SCB Bit M do not disable interrupt. */
enable_interrupt(s);
} else if (s->int_stat) {
disable_interrupt(s);
}
}
static void eepro100_cx_interrupt(EEPRO100State * s)
{
/* CU completed action command. */
/* Transmit not ok (82557 only, not in emulation). */
eepro100_interrupt(s, 0x80);
}
static void eepro100_cna_interrupt(EEPRO100State * s)
{
/* CU left the active state. */
eepro100_interrupt(s, 0x20);
}
static void eepro100_fr_interrupt(EEPRO100State * s)
{
/* RU received a complete frame. */
eepro100_interrupt(s, 0x40);
}
#if 0
static void eepro100_rnr_interrupt(EEPRO100State * s)
{
/* RU is not ready. */
eepro100_interrupt(s, 0x10);
}
#endif
static void eepro100_mdi_interrupt(EEPRO100State * s)
{
/* MDI completed read or write cycle. */
eepro100_interrupt(s, 0x08);
}
static void eepro100_swi_interrupt(EEPRO100State * s)
{
/* Software has requested an interrupt. */
eepro100_interrupt(s, 0x04);
}
#if 0
static void eepro100_fcp_interrupt(EEPRO100State * s)
{
/* Flow control pause interrupt (82558 and later). */
eepro100_interrupt(s, 0x01);
}
#endif
static void pci_reset(EEPRO100State * s)
{
uint32_t device = s->device;
uint8_t *pci_conf = s->dev.config;
TRACE(OTHER, logout("%p\n", s));
/* PCI Vendor ID */
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL);
/* PCI Device ID depends on device and is set below. */
/* PCI Command */
PCI_CONFIG_16(PCI_COMMAND, 0x0000);
/* PCI Status */
PCI_CONFIG_16(PCI_STATUS, 0x2800);
/* PCI Revision ID */
PCI_CONFIG_8(PCI_REVISION_ID, 0x08);
/* PCI Class Code */
PCI_CONFIG_8(0x09, 0x00);
pci_config_set_class(pci_conf, PCI_CLASS_NETWORK_ETHERNET);
/* PCI Cache Line Size */
/* check cache line size!!! */
//~ PCI_CONFIG_8(0x0c, 0x00);
/* PCI Latency Timer */
PCI_CONFIG_8(0x0d, 0x20); // latency timer = 32 clocks
/* PCI Header Type */
/* BIST (built-in self test) */
#if defined(TARGET_I386)
// !!! workaround for buggy bios
//~ #define PCI_ADDRESS_SPACE_MEM_PREFETCH 0
#endif
#if 0
/* PCI Base Address Registers */
/* CSR Memory Mapped Base Address */
PCI_CONFIG_32(PCI_BASE_ADDRESS_0,
PCI_ADDRESS_SPACE_MEM | PCI_ADDRESS_SPACE_MEM_PREFETCH);
/* CSR I/O Mapped Base Address */
PCI_CONFIG_32(PCI_BASE_ADDRESS_1, PCI_ADDRESS_SPACE_IO);
#if 0
/* Flash Memory Mapped Base Address */
PCI_CONFIG_32(PCI_BASE_ADDRESS_2, 0xfffe0000 | PCI_ADDRESS_SPACE_MEM);
#endif
#endif
/* Expansion ROM Base Address (depends on boot disable!!!) */
PCI_CONFIG_32(0x30, 0x00000000);
/* Capability Pointer */
PCI_CONFIG_8(0x34, 0xdc);
/* Interrupt Line */
/* Interrupt Pin */
PCI_CONFIG_8(0x3d, 1); // interrupt pin 0
/* Minimum Grant */
PCI_CONFIG_8(0x3e, 0x08);
/* Maximum Latency */
PCI_CONFIG_8(0x3f, 0x18);
/* Power Management Capabilities / Next Item Pointer / Capability ID */
PCI_CONFIG_32(0xdc, 0x7e210001);
switch (device) {
case i82551:
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82551IT);
PCI_CONFIG_8(PCI_REVISION_ID, 0x0f);
break;
case i82557B:
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82557);
PCI_CONFIG_8(PCI_REVISION_ID, 0x02);
break;
case i82557C:
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82557);
PCI_CONFIG_8(PCI_REVISION_ID, 0x03);
break;
case i82558B:
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82557);
PCI_CONFIG_16(PCI_STATUS, 0x2810);
PCI_CONFIG_8(PCI_REVISION_ID, 0x05);
break;
case i82559C:
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82557);
PCI_CONFIG_16(PCI_STATUS, 0x2810);
//~ PCI_CONFIG_8(PCI_REVISION_ID, 0x08);
break;
case i82559ER:
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_INTEL_82551IT);
PCI_CONFIG_16(PCI_STATUS, 0x2810);
PCI_CONFIG_8(PCI_REVISION_ID, 0x09);
break;
//~ PCI_CONFIG_16(PCI_DEVICE_ID, 0x1029);
//~ PCI_CONFIG_16(PCI_DEVICE_ID, 0x1030); /* 82559 InBusiness 10/100 */
default:
logout("Device %X is undefined!\n", device);
}
if (device == i82557C || device == i82558B || device == i82559C) {
logout("Get device id and revision from EEPROM!!!\n");
}
}
static void nic_selective_reset(EEPRO100State * s)
{
size_t i;
uint16_t *eeprom_contents = eeprom93xx_data(s->eeprom);
//~ eeprom93xx_reset(s->eeprom);
memcpy(eeprom_contents, s->macaddr, 6);
eeprom_contents[0xa] = 0x4000;
if (s->device == i82557B || s->device == i82557C)
eeprom_contents[5] = 0x0100;
uint16_t sum = 0;
for (i = 0; i < EEPROM_SIZE - 1; i++) {
sum += eeprom_contents[i];
}
eeprom_contents[EEPROM_SIZE - 1] = 0xbaba - sum;
TRACE(EEPROM, logout("checksum=0x%04x\n", eeprom_contents[EEPROM_SIZE - 1]));
memset(s->mem, 0, sizeof(s->mem));
uint32_t val = BIT(21);
memcpy(&s->mem[SCBCtrlMDI], &val, sizeof(val));
assert(sizeof(s->mdimem) == sizeof(eepro100_mdi_default));
memcpy(&s->mdimem[0], &eepro100_mdi_default[0], sizeof(s->mdimem));
}
static void nic_reset(void *opaque)
{
EEPRO100State *s = opaque;
TRACE(OTHER, logout("%p\n", s));
nic_selective_reset(s);
}
#if defined(DEBUG_EEPRO100)
static const char * const reg[PCI_IO_SIZE / 4] = {
"Command/Status",
"General Pointer",
"Port",
"EEPROM/Flash Control",
"MDI Control",
"Receive DMA Byte Count",
"Flow control",
"General Status/Control"
};
static char *regname(uint32_t addr)
{
static char buf[16];
if (addr < PCI_IO_SIZE) {
const char *r = reg[addr / 4];
if (r != 0) {
snprintf(buf, sizeof(buf), "%s+%u", r, addr % 4);
} else {
snprintf(buf, sizeof(buf), "0x%02x", addr);
}
} else {
snprintf(buf, sizeof(buf), "??? 0x%08x", addr);
}
return buf;
}
#endif /* DEBUG_EEPRO100 */
#if 0
static uint16_t eepro100_read_status(EEPRO100State * s)
{
uint16_t val = s->status;
TRACE(OTHER, logout("val=0x%04x\n", val));
return val;
}
static void eepro100_write_status(EEPRO100State * s, uint16_t val)
{
TRACE(OTHER, logout("val=0x%04x\n", val));
s->status = val;
}
#endif
/*****************************************************************************
*
* Command emulation.
*
****************************************************************************/
#if 0
static uint16_t eepro100_read_command(EEPRO100State * s)
{
uint16_t val = 0xffff;
//~ TRACE(OTHER, logout("val=0x%04x\n", val));
return val;
}
#endif
static bool device_supports_eTxCB(EEPRO100State * s)
{
return (s->device != i82557B && s->device != i82557C);
}
/* Commands that can be put in a command list entry. */
enum commands {
CmdNOp = 0,
CmdIASetup = 1,
CmdConfigure = 2,
CmdMulticastList = 3,
CmdTx = 4,
CmdTDR = 5, /* load microcode */
CmdDump = 6,
CmdDiagnose = 7,
/* And some extra flags: */
CmdSuspend = 0x4000, /* Suspend after completion. */
CmdIntr = 0x2000, /* Interrupt after completion. */
CmdTxFlex = 0x0008, /* Use "Flexible mode" for CmdTx command. */
};
static cu_state_t get_cu_state(EEPRO100State * s)
{
return ((s->mem[SCBStatus] >> 6) & 0x03);
}
static void set_cu_state(EEPRO100State * s, cu_state_t state)
{
s->mem[SCBStatus] = (s->mem[SCBStatus] & 0x3f) + (state << 6);
}
static ru_state_t get_ru_state(EEPRO100State * s)
{
return ((s->mem[SCBStatus] >> 2) & 0x0f);
}
static void set_ru_state(EEPRO100State * s, ru_state_t state)
{
s->mem[SCBStatus] = (s->mem[SCBStatus] & 0xc3) + (state << 2);
}
static void dump_statistics(EEPRO100State * s)
{
/* Dump statistical data. Most data is never changed by the emulation
* and always 0, so we first just copy the whole block and then those
* values which really matter.
* Number of data should check configuration!!!
*/
cpu_physical_memory_write(s->statsaddr, (uint8_t *) & s->statistics, 64);
stl_phys(s->statsaddr + 0, s->statistics.tx_good_frames);
stl_phys(s->statsaddr + 36, s->statistics.rx_good_frames);
stl_phys(s->statsaddr + 48, s->statistics.rx_resource_errors);
stl_phys(s->statsaddr + 60, s->statistics.rx_short_frame_errors);
//~ stw_phys(s->statsaddr + 76, s->statistics.xmt_tco_frames);
//~ stw_phys(s->statsaddr + 78, s->statistics.rcv_tco_frames);
//~ missing("CU dump statistical counters");
}
static void eepro100_cu_command(EEPRO100State * s, uint8_t val)
{
eepro100_tx_t tx;
uint32_t cb_address;
switch (val) {
case CU_NOP:
/* No operation. */
break;
case CU_START:
if (get_cu_state(s) != cu_idle) {
/* Intel documentation says that CU must be idle for the CU
* start command. Intel driver for Linux also starts the CU
* from suspended state. */
logout("CU state is %u, should be %u\n", get_cu_state(s), cu_idle);
//~ assert(!"wrong CU state");
}
set_cu_state(s, cu_active);
s->cu_offset = s->pointer;
next_command:
cb_address = s->cu_base + s->cu_offset;
cpu_physical_memory_read(cb_address, (uint8_t *) & tx, sizeof(tx));
uint16_t status = le16_to_cpu(tx.status);
uint16_t command = le16_to_cpu(tx.command);
logout
("val=0x%02x (cu start), status=0x%04x, command=0x%04x, link=0x%08x\n",
val, status, command, tx.link);
bool bit_el = ((command & 0x8000) != 0);
bool bit_s = ((command & 0x4000) != 0);
bool bit_i = ((command & 0x2000) != 0);
bool bit_nc = ((command & 0x0010) != 0);
bool success = true;
//~ bool bit_sf = ((command & 0x0008) != 0);
uint16_t cmd = command & 0x0007;
s->cu_offset = le32_to_cpu(tx.link);
switch (cmd) {
case CmdNOp:
/* Do nothing. */
break;
case CmdIASetup:
cpu_physical_memory_read(cb_address + 8, &s->macaddr[0], 6);
TRACE(OTHER, logout("macaddr: %s\n", nic_dump(&s->macaddr[0], 6)));
break;
case CmdConfigure:
cpu_physical_memory_read(cb_address + 8, &s->configuration[0],
sizeof(s->configuration));
TRACE(OTHER, logout("configuration: %s\n", nic_dump(&s->configuration[0], 16)));
break;
case CmdMulticastList:
//~ missing("multicast list");
break;
case CmdTx:
(void)0;
uint32_t tbd_array = le32_to_cpu(tx.tx_desc_addr);
uint16_t tcb_bytes = (le16_to_cpu(tx.tcb_bytes) & 0x3fff);
TRACE(RXTX, logout
("transmit, TBD array address 0x%08x, TCB byte count 0x%04x, TBD count %u\n",
tbd_array, tcb_bytes, tx.tbd_count));
if (bit_nc) {
missing("CmdTx: NC = 0");
success = false;
break;
}
//~ assert(!bit_sf);
if (tcb_bytes > 2600) {
logout("TCB byte count too large, using 2600\n");
tcb_bytes = 2600;
}
/* Next assertion fails for local configuration. */
//~ assert((tcb_bytes > 0) || (tbd_array != 0xffffffff));
if (!((tcb_bytes > 0) || (tbd_array != 0xffffffff))) {
logout
("illegal values of TBD array address and TCB byte count!\n");
}
// sends larger than MAX_ETH_FRAME_SIZE are allowed, up to 2600 bytes
uint8_t buf[2600];
uint16_t size = 0;
uint32_t tbd_address = cb_address + 0x10;
assert(tcb_bytes <= sizeof(buf));
while (size < tcb_bytes) {
uint32_t tx_buffer_address = ldl_phys(tbd_address);
uint16_t tx_buffer_size = lduw_phys(tbd_address + 4);
//~ uint16_t tx_buffer_el = lduw_phys(tbd_address + 6);
tbd_address += 8;
TRACE(RXTX, logout
("TBD (simplified mode): buffer address 0x%08x, size 0x%04x\n",
tx_buffer_address, tx_buffer_size));
tx_buffer_size = MIN(tx_buffer_size, sizeof(buf) - size);
cpu_physical_memory_read(tx_buffer_address, &buf[size],
tx_buffer_size);
size += tx_buffer_size;
}
if (tbd_array == 0xffffffff) {
/* Simplified mode. Was already handled by code above. */
} else {
/* Flexible mode. */
uint8_t tbd_count = 0;
if (device_supports_eTxCB(s) && !(s->configuration[6] & BIT(4))) {
/* Extended Flexible TCB. */
for (; tbd_count < 2; tbd_count++) {
uint32_t tx_buffer_address = ldl_phys(tbd_address);
uint16_t tx_buffer_size = lduw_phys(tbd_address + 4);
uint16_t tx_buffer_el = lduw_phys(tbd_address + 6);
tbd_address += 8;
TRACE(RXTX, logout
("TBD (extended flexible mode): buffer address 0x%08x, size 0x%04x\n",
tx_buffer_address, tx_buffer_size));
tx_buffer_size = MIN(tx_buffer_size, sizeof(buf) - size);
cpu_physical_memory_read(tx_buffer_address, &buf[size],
tx_buffer_size);
size += tx_buffer_size;
if (tx_buffer_el & 1) {
break;
}
}
}
tbd_address = tbd_array;
for (; tbd_count < tx.tbd_count; tbd_count++) {
uint32_t tx_buffer_address = ldl_phys(tbd_address);
uint16_t tx_buffer_size = lduw_phys(tbd_address + 4);
uint16_t tx_buffer_el = lduw_phys(tbd_address + 6);
tbd_address += 8;
TRACE(RXTX, logout
("TBD (flexible mode): buffer address 0x%08x, size 0x%04x\n",
tx_buffer_address, tx_buffer_size));
tx_buffer_size = MIN(tx_buffer_size, sizeof(buf) - size);
cpu_physical_memory_read(tx_buffer_address, &buf[size],
tx_buffer_size);
size += tx_buffer_size;
if (tx_buffer_el & 1) {
break;
}
}
}
TRACE(RXTX, logout("%p sending frame, len=%d,%s\n", s, size, nic_dump(buf, size)));
qemu_send_packet(s->vc, buf, size);
s->statistics.tx_good_frames++;
/* Transmit with bad status would raise an CX/TNO interrupt.
* (82557 only). Emulation never has bad status. */
//~ eepro100_cx_interrupt(s);
break;
case CmdTDR:
TRACE(OTHER, logout("load microcode\n"));
/* Starting with offset 8, the command contains
* 64 dwords microcode which we just ignore here. */
break;
default:
missing("undefined command");
success = false;
break;
}
/* Write new status. */
stw_phys(cb_address, status | 0x8000 | (success ? 0x2000 : 0));
if (bit_i) {
/* CU completed action. */
eepro100_cx_interrupt(s);
}
if (bit_el) {
/* CU becomes idle. Terminate command loop. */
set_cu_state(s, cu_idle);
eepro100_cna_interrupt(s);
} else if (bit_s) {
/* CU becomes suspended. */
set_cu_state(s, cu_suspended);
eepro100_cna_interrupt(s);
} else {
/* More entries in list. */
TRACE(OTHER, logout("CU list with at least one more entry\n"));
goto next_command;
}
TRACE(OTHER, logout("CU list empty\n"));
/* List is empty. Now CU is idle or suspended. */
break;
case CU_RESUME:
if (get_cu_state(s) != cu_suspended) {
logout("bad CU resume from CU state %u\n", get_cu_state(s));
/* Workaround for bad Linux eepro100 driver which resumes
* from idle state. */
//~ missing("cu resume");
set_cu_state(s, cu_suspended);
}
if (get_cu_state(s) == cu_suspended) {
TRACE(OTHER, logout("CU resuming\n"));
set_cu_state(s, cu_active);
goto next_command;
}
break;
case CU_STATSADDR:
/* Load dump counters address. */
s->statsaddr = s->pointer;
TRACE(OTHER, logout("val=0x%02x (status address)\n", val));
break;
case CU_SHOWSTATS:
/* Dump statistical counters. */
TRACE(OTHER, logout("val=0x%02x (dump stats)\n", val));
dump_statistics(s);
break;
case CU_CMD_BASE:
/* Load CU base. */
TRACE(OTHER, logout("val=0x%02x (CU base address)\n", val));
s->cu_base = s->pointer;
break;
case CU_DUMPSTATS:
/* Dump and reset statistical counters. */
TRACE(OTHER, logout("val=0x%02x (dump stats and reset)\n", val));
dump_statistics(s);
memset(&s->statistics, 0, sizeof(s->statistics));
break;
case CU_SRESUME:
/* CU static resume. */
missing("CU static resume");
break;
default:
missing("Undefined CU command");
}
}
static void eepro100_ru_command(EEPRO100State * s, uint8_t val)
{
switch (val) {
case RU_NOP:
/* No operation. */
break;
case RX_START:
/* RU start. */
if (get_ru_state(s) != ru_idle) {
logout("RU state is %u, should be %u\n", get_ru_state(s), ru_idle);
//~ assert(!"wrong RU state");
}
set_ru_state(s, ru_ready);
s->ru_offset = s->pointer;
TRACE(OTHER, logout("val=0x%02x (rx start)\n", val));
break;
case RX_RESUME:
/* Restart RU. */
if (get_ru_state(s) != ru_suspended) {
logout("RU state is %u, should be %u\n", get_ru_state(s),
ru_suspended);
//~ assert(!"wrong RU state");
}
set_ru_state(s, ru_ready);
break;
case RX_ADDR_LOAD:
/* Load RU base. */
TRACE(OTHER, logout("val=0x%02x (RU base address)\n", val));
s->ru_base = s->pointer;
break;
default:
logout("val=0x%02x (undefined RU command)\n", val);
missing("Undefined SU command");
}
}
static void eepro100_write_command(EEPRO100State * s, uint8_t val)
{
eepro100_ru_command(s, val & 0x0f);
eepro100_cu_command(s, val & 0xf0);
if ((val) == 0) {
TRACE(OTHER, logout("val=0x%02x\n", val));
}
/* Clear command byte after command was accepted. */
s->mem[SCBCmd] = 0;
}
/*****************************************************************************
*
* EEPROM emulation.
*
****************************************************************************/
#define EEPROM_CS 0x02
#define EEPROM_SK 0x01
#define EEPROM_DI 0x04
#define EEPROM_DO 0x08
static uint16_t eepro100_read_eeprom(EEPRO100State * s)
{
uint16_t val;
memcpy(&val, &s->mem[SCBeeprom], sizeof(val));
if (eeprom93xx_read(s->eeprom)) {
val |= EEPROM_DO;
} else {
val &= ~EEPROM_DO;
}
TRACE(EEPROM, logout("val=0x%04x\n", val));
return val;
}
static void eepro100_write_eeprom(eeprom_t * eeprom, uint8_t val)
{
TRACE(EEPROM, logout("val=0x%02x\n", val));
/* mask unwriteable bits */
//~ val = SET_MASKED(val, 0x31, eeprom->value);
int eecs = ((val & EEPROM_CS) != 0);
int eesk = ((val & EEPROM_SK) != 0);
int eedi = ((val & EEPROM_DI) != 0);
eeprom93xx_write(eeprom, eecs, eesk, eedi);
}
static void eepro100_write_pointer(EEPRO100State * s, uint32_t val)
{
s->pointer = le32_to_cpu(val);
TRACE(OTHER, logout("val=0x%08x\n", val));
}
/*****************************************************************************
*
* MDI emulation.
*
****************************************************************************/
#if defined(DEBUG_EEPRO100)
static const char * const mdi_op_name[] = {
"opcode 0",
"write",
"read",
"opcode 3"
};
static const char * const mdi_reg_name[] = {
"Control",
"Status",
"PHY Identification (Word 1)",
"PHY Identification (Word 2)",
"Auto-Negotiation Advertisement",
"Auto-Negotiation Link Partner Ability",
"Auto-Negotiation Expansion"
};
static const char *reg2name(uint8_t reg)
{
static char buffer[10];
const char *p = buffer;
if (reg < ARRAY_SIZE(mdi_reg_name)) {
p = mdi_reg_name[reg];
} else {
snprintf(buffer, sizeof(buffer), "reg=0x%02x", reg);
}
return p;
}
#endif /* DEBUG_EEPRO100 */
static uint32_t eepro100_read_mdi(EEPRO100State * s)
{
uint32_t val;
memcpy(&val, &s->mem[0x10], sizeof(val));
#ifdef DEBUG_EEPRO100
uint8_t raiseint = (val & BIT(29)) >> 29;
uint8_t opcode = (val & BITS(27, 26)) >> 26;
uint8_t phy = (val & BITS(25, 21)) >> 21;
uint8_t reg = (val & BITS(20, 16)) >> 16;
uint16_t data = (val & BITS(15, 0));
#endif
/* Emulation takes no time to finish MDI transaction. */
val |= BIT(28);
TRACE(MDI, logout("val=0x%08x (int=%u, %s, phy=%u, %s, data=0x%04x\n",
val, raiseint, mdi_op_name[opcode], phy,
reg2name(reg), data));
return val;
}
static void eepro100_write_mdi(EEPRO100State * s, uint32_t val)
{
uint8_t raiseint = (val & BIT(29)) >> 29;
uint8_t opcode = (val & BITS(27, 26)) >> 26;
uint8_t phy = (val & BITS(25, 21)) >> 21;
uint8_t reg = (val & BITS(20, 16)) >> 16;
uint16_t data = (val & BITS(15, 0));
TRACE(MDI, logout("val=0x%08x (int=%u, %s, phy=%u, %s, data=0x%04x\n",
val, raiseint, mdi_op_name[opcode], phy, reg2name(reg), data));
if (phy != 1) {
/* Unsupported PHY address. */
//~ logout("phy must be 1 but is %u\n", phy);
data = 0;
} else if (opcode != 1 && opcode != 2) {
/* Unsupported opcode. */
logout("opcode must be 1 or 2 but is %u\n", opcode);
data = 0;
} else if (reg > 6) {
/* Unsupported register. */
logout("register must be 0...6 but is %u\n", reg);
data = 0;
} else {
TRACE(MDI, logout("val=0x%08x (int=%u, %s, phy=%u, %s, data=0x%04x\n",
val, raiseint, mdi_op_name[opcode], phy,
reg2name(reg), data));
if (opcode == 1) {
/* MDI write */
switch (reg) {
case 0: /* Control Register */
if (data & 0x8000) {
/* Reset status and control registers to default. */
s->mdimem[0] = eepro100_mdi_default[0];
s->mdimem[1] = eepro100_mdi_default[1];
data = s->mdimem[reg];
} else {
/* Restart Auto Configuration = Normal Operation */
data &= ~0x0200;
}
break;
case 1: /* Status Register */
missing("not writable");
data = s->mdimem[reg];
break;
case 2: /* PHY Identification Register (Word 1) */
case 3: /* PHY Identification Register (Word 2) */
missing("not implemented");
break;
case 4: /* Auto-Negotiation Advertisement Register */
case 5: /* Auto-Negotiation Link Partner Ability Register */
break;
case 6: /* Auto-Negotiation Expansion Register */
default:
missing("not implemented");
}
s->mdimem[reg] = data;
} else if (opcode == 2) {
/* MDI read */
switch (reg) {
case 0: /* Control Register */
if (data & 0x8000) {
/* Reset status and control registers to default. */
s->mdimem[0] = eepro100_mdi_default[0];
s->mdimem[1] = eepro100_mdi_default[1];
}
break;
case 1: /* Status Register */
s->mdimem[reg] |= 0x0020;
break;
case 2: /* PHY Identification Register (Word 1) */
case 3: /* PHY Identification Register (Word 2) */
case 4: /* Auto-Negotiation Advertisement Register */
break;
case 5: /* Auto-Negotiation Link Partner Ability Register */
s->mdimem[reg] = 0x41fe;
break;
case 6: /* Auto-Negotiation Expansion Register */
s->mdimem[reg] = 0x0001;
break;
}
data = s->mdimem[reg];
}
/* Emulation takes no time to finish MDI transaction.
* Set MDI bit in SCB status register. */
s->mem[SCBAck] |= 0x08;
val |= BIT(28);
if (raiseint) {
eepro100_mdi_interrupt(s);
}
}
val = (val & 0xffff0000) + data;
memcpy(&s->mem[0x10], &val, sizeof(val));
}
/*****************************************************************************
*
* Port emulation.
*
****************************************************************************/
#define PORT_SOFTWARE_RESET 0
#define PORT_SELFTEST 1
#define PORT_SELECTIVE_RESET 2
#define PORT_DUMP 3
#define PORT_SELECTION_MASK 3
typedef struct {
uint32_t st_sign; /* Self Test Signature */
uint32_t st_result; /* Self Test Results */
} eepro100_selftest_t;
static uint32_t eepro100_read_port(EEPRO100State * s)
{
return 0;
}
static void eepro100_write_port(EEPRO100State * s, uint32_t val)
{
val = le32_to_cpu(val);
uint32_t address = (val & ~PORT_SELECTION_MASK);
uint8_t selection = (val & PORT_SELECTION_MASK);
switch (selection) {
case PORT_SOFTWARE_RESET:
nic_reset(s);
break;
case PORT_SELFTEST:
TRACE(OTHER, logout("selftest address=0x%08x\n", address));
eepro100_selftest_t data;
cpu_physical_memory_read(address, (uint8_t *) & data, sizeof(data));
data.st_sign = 0xffffffff;
data.st_result = 0;
cpu_physical_memory_write(address, (uint8_t *) & data, sizeof(data));
break;
case PORT_SELECTIVE_RESET:
TRACE(OTHER, logout("selective reset, selftest address=0x%08x\n", address));
nic_selective_reset(s);
break;
default:
logout("val=0x%08x\n", val);
missing("unknown port selection");
}
}
/*****************************************************************************
*
* General hardware emulation.
*
****************************************************************************/
static uint8_t eepro100_read1(EEPRO100State * s, uint32_t addr)
{
uint8_t val;
if (addr <= sizeof(s->mem) - sizeof(val)) {
memcpy(&val, &s->mem[addr], sizeof(val));
}
switch (addr) {
case SCBStatus:
//~ val = eepro100_read_status(s);
TRACE(OTHER, logout("addr=%s val=0x%02x\n", regname(addr), val));
break;
case SCBAck:
//~ val = eepro100_read_status(s);
TRACE(OTHER, logout("addr=%s val=0x%02x\n", regname(addr), val));
break;
case SCBCmd:
TRACE(OTHER, logout("addr=%s val=0x%02x\n", regname(addr), val));
//~ val = eepro100_read_command(s);
break;
case SCBIntmask:
TRACE(OTHER, logout("addr=%s val=0x%02x\n", regname(addr), val));
break;
case SCBPort + 3:
TRACE(OTHER, logout("addr=%s val=0x%02x\n", regname(addr), val));
break;
case SCBeeprom:
val = eepro100_read_eeprom(s);
break;
case 0x1b: /* PMDR (power management driver register) */
val = 0;
TRACE(OTHER, logout("addr=%s val=0x%02x\n", regname(addr), val));
break;
case 0x1d: /* general status register */
/* 100 Mbps full duplex, valid link */
val = 0x07;
TRACE(OTHER, logout("addr=General Status val=%02x\n", val));
break;
default:
logout("addr=%s val=0x%02x\n", regname(addr), val);
missing("unknown byte read");
}
return val;
}
static uint16_t eepro100_read2(EEPRO100State * s, uint32_t addr)
{
uint16_t val;
if (addr <= sizeof(s->mem) - sizeof(val)) {
memcpy(&val, &s->mem[addr], sizeof(val));
}
switch (addr) {
case SCBStatus:
//~ val = eepro100_read_status(s);
case SCBCmd:
TRACE(OTHER, logout("addr=%s val=0x%04x\n", regname(addr), val));
break;
case SCBeeprom:
val = eepro100_read_eeprom(s);
TRACE(OTHER, logout("addr=%s val=0x%04x\n", regname(addr), val));
break;
default:
logout("addr=%s val=0x%04x\n", regname(addr), val);
missing("unknown word read");
}
return val;
}
static uint32_t eepro100_read4(EEPRO100State * s, uint32_t addr)
{
uint32_t val;
if (addr <= sizeof(s->mem) - sizeof(val)) {
memcpy(&val, &s->mem[addr], sizeof(val));
}
switch (addr) {
case SCBStatus:
//~ val = eepro100_read_status(s);
TRACE(OTHER, logout("addr=%s val=0x%08x\n", regname(addr), val));
break;
case SCBPointer:
//~ val = eepro100_read_pointer(s);
TRACE(OTHER, logout("addr=%s val=0x%08x\n", regname(addr), val));
break;
case SCBPort:
val = eepro100_read_port(s);
TRACE(OTHER, logout("addr=%s val=0x%08x\n", regname(addr), val));
break;
case SCBCtrlMDI:
val = eepro100_read_mdi(s);
break;
default:
logout("addr=%s val=0x%08x\n", regname(addr), val);
missing("unknown longword read");
}
return val;
}
static void eepro100_write1(EEPRO100State * s, uint32_t addr, uint8_t val)
{
if (addr <= sizeof(s->mem) - sizeof(val)) {
memcpy(&s->mem[addr], &val, sizeof(val));
}
TRACE(OTHER, logout("addr=%s val=0x%02x\n", regname(addr), val));
switch (addr) {
case SCBStatus:
//~ eepro100_write_status(s, val);
break;
case SCBAck:
eepro100_acknowledge(s);
break;
case SCBCmd:
eepro100_write_command(s, val);
break;
case SCBIntmask:
if (val & BIT(1)) {
eepro100_swi_interrupt(s);
}
eepro100_interrupt(s, 0);
break;
case SCBPort + 3:
case SCBFlow: /* does not exist on 82557 */
case SCBFlow + 1:
case SCBFlow + 2:
case SCBFlow + 3:
TRACE(OTHER, logout("addr=%s val=0x%02x\n", regname(addr), val));
break;
case SCBeeprom:
eepro100_write_eeprom(s->eeprom, val);
break;
default:
logout("addr=%s val=0x%02x\n", regname(addr), val);
missing("unknown byte write");
}
}
static void eepro100_write2(EEPRO100State * s, uint32_t addr, uint16_t val)
{
if (addr <= sizeof(s->mem) - sizeof(val)) {
memcpy(&s->mem[addr], &val, sizeof(val));
}
TRACE(OTHER, logout("addr=%s val=0x%04x\n", regname(addr), val));
switch (addr) {
case SCBStatus:
//~ eepro100_write_status(s, val);
eepro100_acknowledge(s);
break;
case SCBCmd:
eepro100_write_command(s, val);
eepro100_write1(s, SCBIntmask, val >> 8);
break;
case SCBeeprom:
eepro100_write_eeprom(s->eeprom, val);
break;
default:
logout("addr=%s val=0x%04x\n", regname(addr), val);
missing("unknown word write");
}
}
static void eepro100_write4(EEPRO100State * s, uint32_t addr, uint32_t val)
{
if (addr <= sizeof(s->mem) - sizeof(val)) {
memcpy(&s->mem[addr], &val, sizeof(val));
}
switch (addr) {
case SCBPointer:
eepro100_write_pointer(s, val);
break;
case SCBPort:
TRACE(OTHER, logout("addr=%s val=0x%08x\n", regname(addr), val));
eepro100_write_port(s, val);
break;
case SCBCtrlMDI:
eepro100_write_mdi(s, val);
break;
default:
logout("addr=%s val=0x%08x\n", regname(addr), val);
missing("unknown longword write");
}
}
/*****************************************************************************
*
* Port mapped I/O.
*
****************************************************************************/
static uint32_t ioport_read1(void *opaque, uint32_t addr)
{
EEPRO100State *s = opaque;
//~ logout("addr=%s\n", regname(addr));
return eepro100_read1(s, addr - s->region[1]);
}
static uint32_t ioport_read2(void *opaque, uint32_t addr)
{
EEPRO100State *s = opaque;
return eepro100_read2(s, addr - s->region[1]);
}
static uint32_t ioport_read4(void *opaque, uint32_t addr)
{
EEPRO100State *s = opaque;
return eepro100_read4(s, addr - s->region[1]);
}
static void ioport_write1(void *opaque, uint32_t addr, uint32_t val)
{
EEPRO100State *s = opaque;
//~ logout("addr=%s val=0x%02x\n", regname(addr), val);
eepro100_write1(s, addr - s->region[1], val);
}
static void ioport_write2(void *opaque, uint32_t addr, uint32_t val)
{
EEPRO100State *s = opaque;
eepro100_write2(s, addr - s->region[1], val);
}
static void ioport_write4(void *opaque, uint32_t addr, uint32_t val)
{
EEPRO100State *s = opaque;
eepro100_write4(s, addr - s->region[1], val);
}
/***********************************************************/
/* PCI EEPRO100 definitions */
static void pci_map(PCIDevice * pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
EEPRO100State *s = DO_UPCAST(EEPRO100State, dev, pci_dev);
TRACE(OTHER, logout("region %d, addr=0x%08x, size=0x%08x, type=%d\n",
region_num, addr, size, type));
assert(region_num == 1);
register_ioport_write(addr, size, 1, ioport_write1, s);
register_ioport_read(addr, size, 1, ioport_read1, s);
register_ioport_write(addr, size, 2, ioport_write2, s);
register_ioport_read(addr, size, 2, ioport_read2, s);
register_ioport_write(addr, size, 4, ioport_write4, s);
register_ioport_read(addr, size, 4, ioport_read4, s);
s->region[region_num] = addr;
}
/*****************************************************************************
*
* Memory mapped I/O.
*
****************************************************************************/
static void pci_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
{
EEPRO100State *s = opaque;
//~ logout("addr=%s val=0x%02x\n", regname(addr), val);
eepro100_write1(s, addr, val);
}
static void pci_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
{
EEPRO100State *s = opaque;
//~ logout("addr=%s val=0x%02x\n", regname(addr), val);
eepro100_write2(s, addr, val);
}
static void pci_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
{
EEPRO100State *s = opaque;
//~ logout("addr=%s val=0x%02x\n", regname(addr), val);
eepro100_write4(s, addr, val);
}
static uint32_t pci_mmio_readb(void *opaque, target_phys_addr_t addr)
{
EEPRO100State *s = opaque;
//~ logout("addr=%s\n", regname(addr));
return eepro100_read1(s, addr);
}
static uint32_t pci_mmio_readw(void *opaque, target_phys_addr_t addr)
{
EEPRO100State *s = opaque;
//~ logout("addr=%s\n", regname(addr));
return eepro100_read2(s, addr);
}
static uint32_t pci_mmio_readl(void *opaque, target_phys_addr_t addr)
{
EEPRO100State *s = opaque;
//~ logout("addr=%s\n", regname(addr));
return eepro100_read4(s, addr);
}
static CPUWriteMemoryFunc * const pci_mmio_write[] = {
pci_mmio_writeb,
pci_mmio_writew,
pci_mmio_writel
};
static CPUReadMemoryFunc * const pci_mmio_read[] = {
pci_mmio_readb,
pci_mmio_readw,
pci_mmio_readl
};
static void pci_mmio_map(PCIDevice * pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
EEPRO100State *s = DO_UPCAST(EEPRO100State, dev, pci_dev);
TRACE(OTHER, logout("region %d, addr=0x%08x, size=0x%08x, type=%d\n",
region_num, addr, size, type));
if (region_num == 0) {
/* Map control / status registers. */
cpu_register_physical_memory(addr, size, s->mmio_index);
s->region[region_num] = addr;
}
}
static int nic_can_receive(VLANClientState *vc)
{
EEPRO100State *s = vc->opaque;
TRACE(RXTX, logout("%p\n", s));
return get_ru_state(s) == ru_ready;
//~ return !eepro100_buffer_full(s);
}
static ssize_t nic_receive(VLANClientState *vc, const uint8_t * buf, size_t size)
{
/* TODO:
* - Magic packets should set bit 30 in power management driver register.
* - Interesting packets should set bit 29 in power management driver register.
*/
EEPRO100State *s = vc->opaque;
uint16_t rfd_status = 0xa000;
static const uint8_t broadcast_macaddr[6] =
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
/* TODO: check multiple IA bit. */
if (s->configuration[20] & BIT(6)) {
missing("Multiple IA bit");
return -1;
}
if (s->configuration[8] & 0x80) {
/* CSMA is disabled. */
logout("%p received while CSMA is disabled\n", s);
return -1;
} else if (size < 64 && (s->configuration[7] & 1)) {
/* Short frame and configuration byte 7/0 (discard short receive) set:
* Short frame is discarded */
logout("%p received short frame (%zu byte)\n", s, size);
s->statistics.rx_short_frame_errors++;
//~ return -1;
} else if ((size > MAX_ETH_FRAME_SIZE + 4) && !(s->configuration[18] & 8)) {
/* Long frame and configuration byte 18/3 (long receive ok) not set:
* Long frames are discarded. */
logout("%p received long frame (%zu byte), ignored\n", s, size);
return -1;
} else if (memcmp(buf, s->macaddr, 6) == 0) { // !!!
/* Frame matches individual address. */
/* TODO: check configuration byte 15/4 (ignore U/L). */
TRACE(RXTX, logout("%p received frame for me, len=%zu\n", s, size));
} else if (memcmp(buf, broadcast_macaddr, 6) == 0) {
/* Broadcast frame. */
TRACE(RXTX, logout("%p received broadcast, len=%zu\n", s, size));
rfd_status |= 0x0002;
} else if (buf[0] & 0x01) { // !!!
/* Multicast frame. */
TRACE(RXTX, logout("%p received multicast, len=%zu\n", s, size));
/* TODO: check multicast all bit. */
if (s->configuration[21] & BIT(3)) {
missing("Multicast All bit");
}
int mcast_idx = compute_mcast_idx(buf);
if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7)))) {
return size;
}
rfd_status |= 0x0002;
} else if (s->configuration[15] & 1) {
/* Promiscuous: receive all. */
TRACE(RXTX, logout("%p received frame in promiscuous mode, len=%zu\n", s, size));
rfd_status |= 0x0004;
} else {
TRACE(RXTX, logout("%p received frame, ignored, len=%zu,%s\n", s, size,
nic_dump(buf, size)));
return size;
}
if (get_ru_state(s) != ru_ready) {
/* No resources available. */
logout("no resources, state=%u\n", get_ru_state(s));
s->statistics.rx_resource_errors++;
//~ assert(!"no resources");
return -1;
}
//~ !!!
//~ $3 = {status = 0x0, command = 0xc000, link = 0x2d220, rx_buf_addr = 0x207dc, count = 0x0, size = 0x5f8, packet = {0x0 <repeats 1518 times>}}
eepro100_rx_t rx;
cpu_physical_memory_read(s->ru_base + s->ru_offset, (uint8_t *) & rx,
offsetof(eepro100_rx_t, packet));
uint16_t rfd_command = le16_to_cpu(rx.command);
uint16_t rfd_size = le16_to_cpu(rx.size);
if (size > rfd_size) {
logout("Receive buffer (%" PRId16 " bytes) too small for data "
"(%zu bytes); data truncated\n", rfd_size, size);
size = rfd_size;
}
if (size < 64) {
rfd_status |= 0x0080;
}
TRACE(OTHER, logout("command 0x%04x, link 0x%08x, addr 0x%08x, size %u\n",
rfd_command, rx.link, rx.rx_buf_addr, rfd_size));
stw_phys(s->ru_base + s->ru_offset + offsetof(eepro100_rx_t, status),
rfd_status);
stw_phys(s->ru_base + s->ru_offset + offsetof(eepro100_rx_t, count), size);
/* Early receive interrupt not supported. */
//~ eepro100_er_interrupt(s);
/* Receive CRC Transfer not supported. */
if (s->configuration[18] & 4) {
missing("Receive CRC Transfer");
return -1;
}
/* TODO: check stripping enable bit. */
//~ assert(!(s->configuration[17] & 1));
cpu_physical_memory_write(s->ru_base + s->ru_offset +
offsetof(eepro100_rx_t, packet), buf, size);
s->statistics.rx_good_frames++;
eepro100_fr_interrupt(s);
s->ru_offset = le32_to_cpu(rx.link);
if (rfd_command & 0x8000) {
/* EL bit is set, so this was the last frame. */
logout("receive: Running out of frames\n");
set_ru_state(s, ru_suspended);
}
if (rfd_command & 0x4000) {
/* S bit is set. */
set_ru_state(s, ru_suspended);
}
return size;
}
static int nic_load(QEMUFile * f, void *opaque, int version_id)
{
EEPRO100State *s = opaque;
int i;
int ret;
if (version_id > 3)
return -EINVAL;
ret = pci_device_load(&s->dev, f);
if (ret < 0) {
return ret;
}
/* Skip unused entries. */
qemu_fseek(f, 32, SEEK_CUR);
qemu_get_buffer(f, s->mult, 8);
qemu_get_buffer(f, s->mem, sizeof(s->mem));
/* Restore all members of struct between scb_stat and mem. */
qemu_get_8s(f, &s->scb_stat);
qemu_get_8s(f, &s->int_stat);
/* Skip unused entries. */
qemu_fseek(f, 3 * 4, SEEK_CUR);
qemu_get_buffer(f, s->macaddr, 6);
/* Skip unused entries. */
qemu_fseek(f, 19 * 4, SEEK_CUR);
for (i = 0; i < 32; i++) {
qemu_get_be16s(f, &s->mdimem[i]);
}
/* The eeprom should be saved and restored by its own routines. */
qemu_get_be32s(f, &s->device);
// TODO check device.
qemu_get_be32s(f, &s->pointer);
qemu_get_be32s(f, &s->cu_base);
qemu_get_be32s(f, &s->cu_offset);
qemu_get_be32s(f, &s->ru_base);
qemu_get_be32s(f, &s->ru_offset);
qemu_get_be32s(f, &s->statsaddr);
/* Restore epro100_stats_t statistics. */
qemu_get_be32s(f, &s->statistics.tx_good_frames);
qemu_get_be32s(f, &s->statistics.tx_max_collisions);
qemu_get_be32s(f, &s->statistics.tx_late_collisions);
qemu_get_be32s(f, &s->statistics.tx_underruns);
qemu_get_be32s(f, &s->statistics.tx_lost_crs);
qemu_get_be32s(f, &s->statistics.tx_deferred);
qemu_get_be32s(f, &s->statistics.tx_single_collisions);
qemu_get_be32s(f, &s->statistics.tx_multiple_collisions);
qemu_get_be32s(f, &s->statistics.tx_total_collisions);
qemu_get_be32s(f, &s->statistics.rx_good_frames);
qemu_get_be32s(f, &s->statistics.rx_crc_errors);
qemu_get_be32s(f, &s->statistics.rx_alignment_errors);
qemu_get_be32s(f, &s->statistics.rx_resource_errors);
qemu_get_be32s(f, &s->statistics.rx_overrun_errors);
qemu_get_be32s(f, &s->statistics.rx_cdt_errors);
qemu_get_be32s(f, &s->statistics.rx_short_frame_errors);
qemu_get_be32s(f, &s->statistics.fc_xmt_pause);
qemu_get_be32s(f, &s->statistics.fc_rcv_pause);
qemu_get_be32s(f, &s->statistics.fc_rcv_unsupported);
qemu_get_be16s(f, &s->statistics.xmt_tco_frames);
qemu_get_be16s(f, &s->statistics.rcv_tco_frames);
qemu_get_be32s(f, &s->statistics.complete);
#if 0
qemu_get_be16s(f, &s->status);
#endif
/* Configuration bytes. */
qemu_get_buffer(f, s->configuration, sizeof(s->configuration));
return 0;
}
static void nic_save(QEMUFile * f, void *opaque)
{
EEPRO100State *s = opaque;
int i;
pci_device_save(&s->dev, f);
/* Skip unused entries. */
qemu_fseek(f, 32, SEEK_CUR);
qemu_put_buffer(f, s->mult, 8);
qemu_put_buffer(f, s->mem, sizeof(s->mem));
/* Save all members of struct between scb_stat and mem. */
qemu_put_8s(f, &s->scb_stat);
qemu_put_8s(f, &s->int_stat);
/* Skip unused entries. */
qemu_fseek(f, 3 * 4, SEEK_CUR);
qemu_put_buffer(f, s->macaddr, 6);
/* Skip unused entries. */
qemu_fseek(f, 19 * 4, SEEK_CUR);
for (i = 0; i < 32; i++) {
qemu_put_be16s(f, &s->mdimem[i]);
}
/* The eeprom should be saved and restored by its own routines. */
qemu_put_be32s(f, &s->device);
qemu_put_be32s(f, &s->pointer);
qemu_put_be32s(f, &s->cu_base);
qemu_put_be32s(f, &s->cu_offset);
qemu_put_be32s(f, &s->ru_base);
qemu_put_be32s(f, &s->ru_offset);
qemu_put_be32s(f, &s->statsaddr);
/* Save epro100_stats_t statistics. */
qemu_put_be32s(f, &s->statistics.tx_good_frames);
qemu_put_be32s(f, &s->statistics.tx_max_collisions);
qemu_put_be32s(f, &s->statistics.tx_late_collisions);
qemu_put_be32s(f, &s->statistics.tx_underruns);
qemu_put_be32s(f, &s->statistics.tx_lost_crs);
qemu_put_be32s(f, &s->statistics.tx_deferred);
qemu_put_be32s(f, &s->statistics.tx_single_collisions);
qemu_put_be32s(f, &s->statistics.tx_multiple_collisions);
qemu_put_be32s(f, &s->statistics.tx_total_collisions);
qemu_put_be32s(f, &s->statistics.rx_good_frames);
qemu_put_be32s(f, &s->statistics.rx_crc_errors);
qemu_put_be32s(f, &s->statistics.rx_alignment_errors);
qemu_put_be32s(f, &s->statistics.rx_resource_errors);
qemu_put_be32s(f, &s->statistics.rx_overrun_errors);
qemu_put_be32s(f, &s->statistics.rx_cdt_errors);
qemu_put_be32s(f, &s->statistics.rx_short_frame_errors);
qemu_put_be32s(f, &s->statistics.fc_xmt_pause);
qemu_put_be32s(f, &s->statistics.fc_rcv_pause);
qemu_put_be32s(f, &s->statistics.fc_rcv_unsupported);
qemu_put_be16s(f, &s->statistics.xmt_tco_frames);
qemu_put_be16s(f, &s->statistics.rcv_tco_frames);
qemu_put_be32s(f, &s->statistics.complete);
#if 0
qemu_put_be16s(f, &s->status);
#endif
/* Configuration bytes. */
qemu_put_buffer(f, s->configuration, sizeof(s->configuration));
}
static void nic_cleanup(VLANClientState *vc)
{
EEPRO100State *s = vc->opaque;
unregister_savevm(vc->model, s);
eeprom93xx_free(s->eeprom);
}
static int pci_nic_uninit(PCIDevice *pci_dev)
{
EEPRO100State *s = DO_UPCAST(EEPRO100State, dev, pci_dev);
cpu_unregister_io_memory(s->mmio_index);
return 0;
}
static int nic_init(PCIDevice *pci_dev, uint32_t device)
{
EEPRO100State *s = DO_UPCAST(EEPRO100State, dev, pci_dev);
TRACE(OTHER, logout("\n"));
s->device = device;
pci_reset(s);
/* Add 64 * 2 EEPROM. i82557 and i82558 support a 64 word EEPROM,
* i82559 and later support 64 or 256 word EEPROM. */
s->eeprom = eeprom93xx_new(EEPROM_SIZE);
/* Handler for memory-mapped I/O */
s->mmio_index =
cpu_register_io_memory(pci_mmio_read, pci_mmio_write, s);
pci_register_bar(&s->dev, 0, PCI_MEM_SIZE,
PCI_ADDRESS_SPACE_MEM |
PCI_ADDRESS_SPACE_MEM_PREFETCH, pci_mmio_map);
pci_register_bar(&s->dev, 1, PCI_IO_SIZE, PCI_ADDRESS_SPACE_IO,
pci_map);
pci_register_bar(&s->dev, 2, PCI_FLASH_SIZE, PCI_ADDRESS_SPACE_MEM,
pci_mmio_map);
qdev_get_macaddr(&s->dev.qdev, s->macaddr);
logout("macaddr: %s\n", nic_dump(&s->macaddr[0], 6));
assert(s->region[1] == 0);
nic_reset(s);
s->vc = qdev_get_vlan_client(&s->dev.qdev,
nic_can_receive, nic_receive, NULL,
nic_cleanup, s);
qemu_format_nic_info_str(s->vc, s->macaddr);
TRACE(OTHER, logout("%s\n", s->vc->info_str));
qemu_register_reset(nic_reset, s);
register_savevm(s->vc->model, -1, 3, nic_save, nic_load, s);
return 0;
}
static int pci_i82550_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82550);
}
static int pci_i82551_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82551);
}
static int pci_i82557a_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82557A);
}
static int pci_i82557b_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82557B);
}
static int pci_i82557c_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82557C);
}
static int pci_i82558a_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82558A);
}
static int pci_i82558b_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82558B);
}
static int pci_i82559a_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82559A);
}
static int pci_i82559b_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82559B);
}
static int pci_i82559c_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82559C);
}
static int pci_i82559er_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82559ER);
}
static int pci_i82562_init(PCIDevice *pci_dev)
{
return nic_init(pci_dev, i82562);
}
static PCIDeviceInfo eepro100_info[] = {
{
.qdev.name = "i82550",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82550_init,
},{
.qdev.name = "i82551",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82551_init,
.exit = pci_nic_uninit,
},{
.qdev.name = "i82557a",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82557a_init,
},{
.qdev.name = "i82557b",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82557b_init,
.exit = pci_nic_uninit,
},{
.qdev.name = "i82557c",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82557c_init,
},{
.qdev.name = "i82558a",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82558a_init,
},{
.qdev.name = "i82558b",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82558b_init,
},{
.qdev.name = "i82559a",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82559a_init,
},{
.qdev.name = "i82559b",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82559b_init,
},{
.qdev.name = "i82559c",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82559c_init,
},{
.qdev.name = "i82559er",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82559er_init,
.exit = pci_nic_uninit,
},{
.qdev.name = "i82562",
.qdev.size = sizeof(EEPRO100State),
.init = pci_i82562_init,
},{
/* end of list */
}
};
static void eepro100_register_devices(void)
{
pci_qdev_register_many(eepro100_info);
}
device_init(eepro100_register_devices)
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