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Diffstat (limited to 'hw/eepro100.c')
-rw-r--r--hw/eepro100.c193
1 files changed, 99 insertions, 94 deletions
diff --git a/hw/eepro100.c b/hw/eepro100.c
index d0c45bfbbb..3467f77898 100644
--- a/hw/eepro100.c
+++ b/hw/eepro100.c
@@ -212,6 +212,11 @@ typedef struct {
uint32_t ru_offset; /* RU address offset */
uint32_t statsaddr; /* pointer to eepro100_stats_t */
+ /* Temporary status information (no need to save these values),
+ * used while processing CU commands. */
+ eepro100_tx_t tx; /* transmit buffer descriptor */
+ uint32_t cb_address; /* = cu_base + cu_offset */
+
/* Statistical counters. Also used for wake-up packet (i82559). */
eepro100_stats_t statistics;
@@ -760,17 +765,100 @@ static void dump_statistics(EEPRO100State * s)
//~ missing("CU dump statistical counters");
}
+static void tx_command(EEPRO100State *s)
+{
+ uint32_t tbd_array = le32_to_cpu(s->tx.tx_desc_addr);
+ uint16_t tcb_bytes = (le16_to_cpu(s->tx.tcb_bytes) & 0x3fff);
+ /* 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 = s->cb_address + 0x10;
+ TRACE(RXTX, logout
+ ("transmit, TBD array address 0x%08x, TCB byte count 0x%04x, TBD count %u\n",
+ tbd_array, tcb_bytes, s->tx.tbd_count));
+
+ if (tcb_bytes > 2600) {
+ logout("TCB byte count too large, using 2600\n");
+ tcb_bytes = 2600;
+ }
+ if (!((tcb_bytes > 0) || (tbd_array != 0xffffffff))) {
+ logout
+ ("illegal values of TBD array address and TCB byte count!\n");
+ }
+ 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 (s->has_extended_tcb_support && !(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 < s->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->nic->nc, 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);
+}
+
static void action_command(EEPRO100State *s)
{
for (;;) {
- uint32_t cb_address = s->cu_base + s->cu_offset;
- eepro100_tx_t tx;
- 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);
+ s->cb_address = s->cu_base + s->cu_offset;
+ cpu_physical_memory_read(s->cb_address, (uint8_t *)&s->tx, sizeof(s->tx));
+ uint16_t status = le16_to_cpu(s->tx.status);
+ uint16_t command = le16_to_cpu(s->tx.command);
logout
("val=0x%02x (cu start), status=0x%04x, command=0x%04x, link=0x%08x\n",
- val, status, command, tx.link);
+ val, status, command, s->tx.link);
bool bit_el = ((command & 0x8000) != 0);
bool bit_s = ((command & 0x4000) != 0);
bool bit_i = ((command & 0x2000) != 0);
@@ -778,17 +866,17 @@ static void action_command(EEPRO100State *s)
bool success = true;
//~ bool bit_sf = ((command & 0x0008) != 0);
uint16_t cmd = command & 0x0007;
- s->cu_offset = le32_to_cpu(tx.link);
+ s->cu_offset = le32_to_cpu(s->tx.link);
switch (cmd) {
case CmdNOp:
/* Do nothing. */
break;
case CmdIASetup:
- cpu_physical_memory_read(cb_address + 8, &s->conf.macaddr.a[0], 6);
+ cpu_physical_memory_read(s->cb_address + 8, &s->conf.macaddr.a[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],
+ cpu_physical_memory_read(s->cb_address + 8, &s->configuration[0],
sizeof(s->configuration));
TRACE(OTHER, logout("configuration: %s\n", nic_dump(&s->configuration[0], 16)));
break;
@@ -796,95 +884,12 @@ static void action_command(EEPRO100State *s)
//~ 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 (s->has_extended_tcb_support && !(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->nic->nc, 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);
+ tx_command(s);
break;
case CmdTDR:
TRACE(OTHER, logout("load microcode\n"));
@@ -897,7 +902,7 @@ static void action_command(EEPRO100State *s)
break;
}
/* Write new status. */
- stw_phys(cb_address, status | 0x8000 | (success ? 0x2000 : 0));
+ stw_phys(s->cb_address, status | 0x8000 | (success ? 0x2000 : 0));
if (bit_i) {
/* CU completed action. */
eepro100_cx_interrupt(s);
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-30 09:09:19 +0000