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tgtEthernetCabletron.ino
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tgtEthernetCabletron.ino
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#include "config.h"
#ifdef SUPPORT_ETHERNET_CABLETRON
#include "scsiCommands.h"
#include "scsiSense.h"
#include "svcEthernet.h"
typedef struct ctron_stats {
uint32_t frames_xmit; /* Frames Transmitted */
uint32_t bytes_xmit;
uint32_t ucast_xmit; /* never incremented? */
uint32_t mcast_xmit; /* gets ucasts and mcasts?? */
uint32_t bcast_xmit;
uint32_t defer_xmit;
uint32_t sgl_coll;
uint32_t multi_coll;
uint32_t tot_xmit_err;
uint32_t late_coll;
uint32_t excess_coll;
uint32_t int_err_xmit;
uint32_t carr_err;
uint32_t media_abort;
uint32_t frames_rec;
uint32_t bytes_rec;
uint32_t ucast_rec; /* never incremented? */
uint32_t mcast_rec; /* gets ucasts and mcasts?? */
uint32_t bcast_rec;
uint32_t tot_rec_err;
uint32_t too_long;
uint32_t too_short;
uint32_t align_err;
uint32_t crc_err;
uint32_t len_err;
uint32_t int_err_rec;
uint32_t sqe_err;
} ctron_stats_t;
ctron_stats_t EthernetStats;
uint8_t target_ether_pktbuf[16384];
static uint8_t TARGET_ETHERNET_INQUIRY_RESPONSE[] = {
0x03, 0x00, 0x00, 0x00,
0x4b, 0x00, 0x00, 0x18,
// Vendor ID (8 Bytes)
'C','A','B','L','E','T','R','N',
// Product ID (16 Bytes)
'E','A','4','1','2','/','1','4',
'/','1','9',' ',' ','D','0','0',
// Revision Number (4 Bytes)
'1','.','0','0',
// Firmware Version (8 Bytes)
'0','1','.','0','0','.','0','0',
// Hardware Address (Fixed, Current)
0x00, 0xDE, 0xAD, 0xBE, 0xEF, 0xF1,
0x00, 0xDE, 0xAD, 0xBE, 0xEF, 0xF1,
// Firmware Date [22]
'M', 'o', 'n', ' ', 'J', 'u', 'n', ' ', ' ', '7',
'1', '9', '9', '3', ' ', '0', '8', ':', '1', '7',
// Media Type
0,
// HW Read Port
0,
// ????
0
};
static void etherInit() {
W5100.init();
SPI1.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.setMACAddress(TARGET_ETHERNET_INQUIRY_RESPONSE+44);
SPI1.endTransaction();
W5100.writeSnMR(0, SnMR::MACRAW);
W5100.execCmdSn(0, Sock_OPEN);
memset(&EthernetStats, 0, sizeof(EthernetStats));
}
// GetAddr Command
static int target_CabletronGetAddr() {
uint8_t len;
DEBUGPRINT(DBG_TRACE, " > GetAddr");
// Setup response
memcpy(TARGET_RESPBUF, lun[target_lun].HWAddr, 6);
len = 6;
SPI1.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.getMACAddress(TARGET_RESPBUF);
SPI1.endTransaction();
// Truncate if necessary
if((target_cmdbuf[4] > 0) && (target_cmdbuf[4] < len))
len = target_cmdbuf[4];
DEBUGPRINT(DBG_TRACE, " %d %02x:%02x:%02x:%02x:%02x:%02x", target_cmdbuf[4],
TARGET_RESPBUF[0], TARGET_RESPBUF[1],
TARGET_RESPBUF[2], TARGET_RESPBUF[3],
TARGET_RESPBUF[4], TARGET_RESPBUF[5]);
// Send it
return target_DIN(TARGET_RESPBUF, len, 1);
}
// SetAddr Command
static int target_CabletronSetAddr() {
uint8_t len;
DEBUGPRINT(DBG_TRACE, " > SetAddr");
len = 6;
if((target_cmdbuf[4] > 0) && (target_cmdbuf[4] < len))
len = target_cmdbuf[4];
int rv = target_DOUT(TARGET_RESPBUF, len, 1);
DEBUGPRINT(DBG_TRACE, " %d %02x:%02x:%02x:%02x:%02x:%02x", target_cmdbuf[4],
TARGET_RESPBUF[0], TARGET_RESPBUF[1],
TARGET_RESPBUF[2], TARGET_RESPBUF[3],
TARGET_RESPBUF[4], TARGET_RESPBUF[5]);
SPI1.beginTransaction(SPI_ETHERNET_SETTINGS);
W5100.setMACAddress(TARGET_RESPBUF);
SPI1.endTransaction();
memcpy(lun[target_lun].HWAddr, TARGET_RESPBUF, len);
return rv;
}
// GetMedia Command
static int target_CabletronGetMedia() {
uint8_t len;
DEBUGPRINT(DBG_TRACE, " > GetMedia");
// Setup response
TARGET_RESPBUF[0] = lun[target_lun].MediaType;
len = 1;
// Truncate if necessary
if((target_cmdbuf[4] > 0) && (target_cmdbuf[4] < len))
len = target_cmdbuf[4];
// Send it
return target_DIN(TARGET_RESPBUF, len, 1);
}
// GetStats Command
static int target_CabletronGetStats() {
uint8_t len;
DEBUGPRINT(DBG_TRACE, " > GetStats");
// Setup response
memcpy(TARGET_RESPBUF, &EthernetStats, sizeof(EthernetStats));
len = sizeof(EthernetStats);
// Truncate if necessary
if((target_cmdbuf[4] > 0) && (target_cmdbuf[4] < len))
len = target_cmdbuf[4];
// Send it
return target_DIN(TARGET_RESPBUF, len, 1);
}
// SetMedia Command
static int target_CabletronSetMedia() {
DEBUGPRINT(DBG_TRACE, " > SetMedia");
lun[target_lun].MediaType = target_cmdbuf[2];
return 0;
}
// SetMode Command
int target_CabletronSetMode() {
DEBUGPRINT(DBG_TRACE, " > SetMode");
return 0;
}
// Inquiry Command
int target_CabletronInquiry() {
uint8_t len;
DEBUGPRINT(DBG_TRACE, " > Inquiry");
if(target_cmdbuf[1] & 0x3) {
target_status = STATUS_CHECK;
target_sense[target_lun].key = ILLEGAL_REQUEST; // Illegal Request
target_sense[target_lun].code = INVALID_FIELD_IN_CDB; // Invalid field in CDB
target_sense[target_lun].key_specific[0] = ERROR_IN_OPCODE; // Error in Byte 1
target_sense[target_lun].key_specific[1] = 0x00;
target_sense[target_lun].key_specific[2] = 0x01;
return 0;
}
// Setup response
memcpy(TARGET_RESPBUF, TARGET_ETHERNET_INQUIRY_RESPONSE, sizeof(TARGET_INQUIRY_RESPONSE));
len = 5 + TARGET_RESPBUF[4];
if(target_lun >= luns) {
TARGET_RESPBUF[0] = 0x7f;
}
if(lun[target_lun].Vendor[0]) {
memcpy(TARGET_RESPBUF+8, lun[target_lun].Vendor, 8);
}
if(lun[target_lun].Model[0]) {
memcpy(TARGET_RESPBUF+16, lun[target_lun].Model, 16);
}
if(lun[target_lun].Revision[0]) {
memcpy(TARGET_RESPBUF+32, lun[target_lun].Revision, 4);
}
if(lun[target_lun].Unique[0]) {
memcpy(TARGET_RESPBUF+36, lun[target_lun].Unique, 8);
} else {
// Make serial number unique per LUN
TARGET_RESPBUF[40] = '0' + ((target_lun >> 3) & 7);
TARGET_RESPBUF[41] = '0' + (target_lun & 7);
}
TARGET_RESPBUF[78] = lun[target_lun].MediaType;
TARGET_RESPBUF[79] = target_lun >> 3;
// Truncate if necessary
if(target_cmdbuf[4] < len)
len = target_cmdbuf[4];
// Send it
return target_DIN(TARGET_RESPBUF, len, 1);
}
static int target_CabletronSend() {
DEBUGPRINT(DBG_TRACE, " > NetSend");
target_ether_pktbuf[0] = target_cmdbuf[3];
target_ether_pktbuf[1] = target_cmdbuf[4];
uint16_t len = (target_ether_pktbuf[0] << 8) | target_ether_pktbuf[1];
int rv = target_DOUT(target_ether_pktbuf+2, len-2, 1);
DEBUGPRINT(DBG_TRACE, " %02x%02x",
target_ether_pktbuf[0], target_ether_pktbuf[1]);
DEBUGPRINT(DBG_TRACE, " %02x:%02x:%02x:%02x:%02x:%02x",
target_ether_pktbuf[8], target_ether_pktbuf[9],
target_ether_pktbuf[10], target_ether_pktbuf[11],
target_ether_pktbuf[12], target_ether_pktbuf[13]);
DEBUGPRINT(DBG_TRACE, "-> %02x:%02x:%02x:%02x:%02x:%02x",
target_ether_pktbuf[2], target_ether_pktbuf[3],
target_ether_pktbuf[4], target_ether_pktbuf[5],
target_ether_pktbuf[6], target_ether_pktbuf[7]);
// Hand packet off to ethercon
target_EthernetSend(target_ether_pktbuf, len);
EthernetStats.frames_xmit++;
return rv;
}
static int target_CabletronRecv() {
int len;
DEBUGPRINT(DBG_TRACE, " > NetRecv");
// Get packet from ethercon
if(len = target_EthernetRecv(target_ether_pktbuf, sizeof(target_ether_pktbuf))) {
DEBUGPRINT(DBG_TRACE, " %04x", len);
DEBUGPRINT(DBG_TRACE, " %02x:%02x:%02x:%02x:%02x:%02x",
target_ether_pktbuf[8], target_ether_pktbuf[9],
target_ether_pktbuf[10], target_ether_pktbuf[11],
target_ether_pktbuf[12], target_ether_pktbuf[13]);
DEBUGPRINT(DBG_TRACE, "-> %02x:%02x:%02x:%02x:%02x:%02x",
target_ether_pktbuf[2], target_ether_pktbuf[3],
target_ether_pktbuf[4], target_ether_pktbuf[5],
target_ether_pktbuf[6], target_ether_pktbuf[7]);
EthernetStats.frames_rec++;
return target_DIN(target_ether_pktbuf, len, 1);
}
return 0;
}
static int target_CabletronAddProtocol() {
DEBUGPRINT(DBG_TRACE, " > Add Protocol");
uint16_t len = target_cmdbuf[4];
int rv = target_DOUT(target_ether_pktbuf, len, 1);
DEBUGPRINT(DBG_TRACE, " %d %02x%02x", target_cmdbuf[4], target_ether_pktbuf[0], target_ether_pktbuf[2]);
return rv;
}
static int target_CabletronRemoveProtocol() {
DEBUGPRINT(DBG_TRACE, " > Remove Protocol");
uint16_t len = target_cmdbuf[4];
int rv = target_DOUT(target_ether_pktbuf, len, 1);
DEBUGPRINT(DBG_TRACE, " %d %02x%02x", target_cmdbuf[4], target_ether_pktbuf[0], target_ether_pktbuf[1]);
return rv;
}
static int target_CabletronAddMulticast() {
DEBUGPRINT(DBG_TRACE, " > Add Multicast");
uint16_t len = target_cmdbuf[4];
int rv = target_DOUT(target_ether_pktbuf, len, 1);
DEBUGPRINT(DBG_TRACE, " %d %02x:%02x:%02x:%02x:%02x:%02x", target_cmdbuf[4],
target_ether_pktbuf[0], target_ether_pktbuf[1],
target_ether_pktbuf[2], target_ether_pktbuf[3],
target_ether_pktbuf[4], target_ether_pktbuf[5]);
return rv;
}
static int target_CabletronRemoveMulticast() {
DEBUGPRINT(DBG_TRACE, " > Remove Multicast");
uint16_t len = target_cmdbuf[4];
int rv = target_DOUT(target_ether_pktbuf, len, 1);
DEBUGPRINT(DBG_TRACE, " %d %02x:%02x:%02x:%02x:%02x:%02x", target_cmdbuf[4],
target_ether_pktbuf[0], target_ether_pktbuf[1],
target_ether_pktbuf[2], target_ether_pktbuf[3],
target_ether_pktbuf[4], target_ether_pktbuf[5]);
return rv;
}
int target_CabletronProcess() {
uint16_t ethercmd = (target_cmdbuf[0] << 8) | target_cmdbuf[1];
switch(target_cmdbuf[0]) {
case CMD_CABLETRON_RECV:
return target_CabletronRecv();
}
switch(ethercmd) {
case CMD_CABLETRON_SEND:
return target_CabletronSend();
case CMD_CABLETRON_ADD_PROTO:
return target_CabletronAddProtocol();
case CMD_CABLETRON_REM_PROTO:
return target_CabletronRemoveProtocol();
case CMD_CABLETRON_SET_MODE:
return target_CabletronSetMode();
case CMD_CABLETRON_SET_MULTI:
return target_CabletronAddMulticast();
case CMD_CABLETRON_REMOVE_MULTI:
return target_CabletronRemoveMulticast();
case CMD_CABLETRON_GET_STATS:
return target_CabletronGetStats();
case CMD_CABLETRON_SET_MEDIA:
return target_CabletronSetMedia();
case CMD_CABLETRON_GET_MEDIA:
return target_CabletronGetMedia();
case CMD_CABLETRON_LOAD_IMAGE:
DEBUGPRINT(DBG_TRACE, " > LoadImage");
return -1;
case CMD_CABLETRON_SET_ADDR:
return target_CabletronSetAddr();
case CMD_CABLETRON_GET_ADDR:
return target_CabletronGetAddr();
}
return -1;
}
#endif