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Diffstat (limited to 'hw/lance.c')
-rw-r--r--hw/lance.c134
1 files changed, 57 insertions, 77 deletions
diff --git a/hw/lance.c b/hw/lance.c
index c594c52e83..3a8a7d0b28 100644
--- a/hw/lance.c
+++ b/hw/lance.c
@@ -1,7 +1,7 @@
/*
* QEMU Lance emulation
*
- * Copyright (c) 2003-2004 Fabrice Bellard
+ * Copyright (c) 2003-2005 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -26,20 +26,24 @@
/* debug LANCE card */
//#define DEBUG_LANCE
+#ifdef DEBUG_LANCE
+#define DPRINTF(fmt, args...) \
+do { printf("LANCE: " fmt , ##args); } while (0)
+#else
+#define DPRINTF(fmt, args...)
+#endif
+
#ifndef LANCE_LOG_TX_BUFFERS
#define LANCE_LOG_TX_BUFFERS 4
#define LANCE_LOG_RX_BUFFERS 4
#endif
-#define CRC_POLYNOMIAL_BE 0x04c11db7UL /* Ethernet CRC, big endian */
-#define CRC_POLYNOMIAL_LE 0xedb88320UL /* Ethernet CRC, little endian */
-
-
#define LE_CSR0 0
#define LE_CSR1 1
#define LE_CSR2 2
#define LE_CSR3 3
-#define LE_MAXREG (LE_CSR3 + 1)
+#define LE_NREGS (LE_CSR3 + 1)
+#define LE_MAXREG LE_CSR3
#define LE_RDP 0
#define LE_RAP 1
@@ -148,21 +152,12 @@ struct lance_init_block {
#define LEDMA_REGS 4
#define LEDMA_MAXADDR (LEDMA_REGS * 4 - 1)
-#if 0
-/* Structure to describe the current status of DMA registers on the Sparc */
-struct sparc_dma_registers {
- uint32_t cond_reg; /* DMA condition register */
- uint32_t st_addr; /* Start address of this transfer */
- uint32_t cnt; /* How many bytes to transfer */
- uint32_t dma_test; /* DMA test register */
-};
-#endif
typedef struct LANCEState {
NetDriverState *nd;
uint32_t leptr;
uint16_t addr;
- uint16_t regs[LE_MAXREG];
+ uint16_t regs[LE_NREGS];
uint8_t phys[6]; /* mac address */
int irq;
unsigned int rxptr, txptr;
@@ -177,7 +172,7 @@ static void lance_reset(void *opaque)
memcpy(s->phys, s->nd->macaddr, 6);
s->rxptr = 0;
s->txptr = 0;
- memset(s->regs, 0, LE_MAXREG * 2);
+ memset(s->regs, 0, LE_NREGS * 2);
s->regs[LE_CSR0] = LE_C0_STOP;
memset(s->ledmaregs, 0, LEDMA_REGS * 4);
}
@@ -190,10 +185,13 @@ static uint32_t lance_mem_readw(void *opaque, target_phys_addr_t addr)
saddr = addr & LE_MAXREG;
switch (saddr >> 1) {
case LE_RDP:
+ DPRINTF("read dreg[%d] = %4.4x\n", s->addr, s->regs[s->addr]);
return s->regs[s->addr];
case LE_RAP:
+ DPRINTF("read areg = %4.4x\n", s->addr);
return s->addr;
default:
+ DPRINTF("read unknown(%d)\n", saddr>>1);
break;
}
return 0;
@@ -208,6 +206,7 @@ static void lance_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val
saddr = addr & LE_MAXREG;
switch (saddr >> 1) {
case LE_RDP:
+ DPRINTF("write dreg[%d] = %4.4x\n", s->addr, val);
switch(s->addr) {
case LE_CSR0:
if (val & LE_C0_STOP) {
@@ -242,12 +241,6 @@ static void lance_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val
}
s->regs[LE_CSR0] = reg;
-
- // trigger bits
- //if (val & LE_C0_TDMD)
-
- if ((s->regs[LE_CSR0] & LE_C0_INTR) && (s->regs[LE_CSR0] & LE_C0_INEA))
- pic_set_irq(s->irq, 1);
break;
case LE_CSR1:
s->leptr = (s->leptr & 0xffff0000) | (val & 0xffff);
@@ -263,10 +256,12 @@ static void lance_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val
}
break;
case LE_RAP:
- if (val < LE_MAXREG)
+ DPRINTF("write areg = %4.4x\n", val);
+ if (val < LE_NREGS)
s->addr = val;
break;
default:
+ DPRINTF("write unknown(%d) = %4.4x\n", saddr>>1, val);
break;
}
lance_send(s);
@@ -292,7 +287,7 @@ static int lance_can_receive(void *opaque)
uint32_t dmaptr = s->leptr + s->ledmaregs[3];
struct lance_init_block *ib;
int i;
- uint16_t temp;
+ uint8_t temp8;
if ((s->regs[LE_CSR0] & LE_C0_STOP) == LE_C0_STOP)
return 0;
@@ -300,18 +295,13 @@ static int lance_can_receive(void *opaque)
ib = (void *) iommu_translate(dmaptr);
for (i = 0; i < RX_RING_SIZE; i++) {
- cpu_physical_memory_read((uint32_t)&ib->brx_ring[i].rmd1_bits, (void *) &temp, 1);
- temp &= 0xff;
- if (temp == (LE_R1_OWN)) {
-#ifdef DEBUG_LANCE
- fprintf(stderr, "lance: can receive %d\n", RX_BUFF_SIZE);
-#endif
+ cpu_physical_memory_read((uint32_t)&ib->brx_ring[i].rmd1_bits, (void *) &temp8, 1);
+ if (temp8 == (LE_R1_OWN)) {
+ DPRINTF("can receive %d\n", RX_BUFF_SIZE);
return RX_BUFF_SIZE;
}
}
-#ifdef DEBUG_LANCE
- fprintf(stderr, "lance: cannot receive\n");
-#endif
+ DPRINTF("cannot receive\n");
return 0;
}
@@ -322,9 +312,11 @@ static void lance_receive(void *opaque, const uint8_t *buf, int size)
LANCEState *s = opaque;
uint32_t dmaptr = s->leptr + s->ledmaregs[3];
struct lance_init_block *ib;
- unsigned int i, old_rxptr, j;
- uint16_t temp;
+ unsigned int i, old_rxptr;
+ uint16_t temp16;
+ uint8_t temp8;
+ DPRINTF("receive size %d\n", size);
if ((s->regs[LE_CSR0] & LE_C0_STOP) == LE_C0_STOP)
return;
@@ -332,27 +324,19 @@ static void lance_receive(void *opaque, const uint8_t *buf, int size)
old_rxptr = s->rxptr;
for (i = s->rxptr; i != ((old_rxptr - 1) & RX_RING_MOD_MASK); i = (i + 1) & RX_RING_MOD_MASK) {
- cpu_physical_memory_read((uint32_t)&ib->brx_ring[i].rmd1_bits, (void *) &temp, 1);
- if (temp == (LE_R1_OWN)) {
+ cpu_physical_memory_read((uint32_t)&ib->brx_ring[i].rmd1_bits, (void *) &temp8, 1);
+ if (temp8 == (LE_R1_OWN)) {
s->rxptr = (s->rxptr + 1) & RX_RING_MOD_MASK;
- temp = size;
- bswap16s(&temp);
- cpu_physical_memory_write((uint32_t)&ib->brx_ring[i].mblength, (void *) &temp, 2);
-#if 0
+ temp16 = size + 4;
+ bswap16s(&temp16);
+ cpu_physical_memory_write((uint32_t)&ib->brx_ring[i].mblength, (void *) &temp16, 2);
cpu_physical_memory_write((uint32_t)&ib->rx_buf[i], buf, size);
-#else
- for (j = 0; j < size; j++) {
- cpu_physical_memory_write(((uint32_t)&ib->rx_buf[i]) + j, &buf[j], 1);
- }
-#endif
- temp = LE_R1_POK;
- cpu_physical_memory_write((uint32_t)&ib->brx_ring[i].rmd1_bits, (void *) &temp, 1);
+ temp8 = LE_R1_POK;
+ cpu_physical_memory_write((uint32_t)&ib->brx_ring[i].rmd1_bits, (void *) &temp8, 1);
s->regs[LE_CSR0] |= LE_C0_RINT | LE_C0_INTR;
- if ((s->regs[LE_CSR0] & LE_C0_INTR) && (s->regs[LE_CSR0] & LE_C0_INEA))
+ if (s->regs[LE_CSR0] & LE_C0_INEA)
pic_set_irq(s->irq, 1);
-#ifdef DEBUG_LANCE
- fprintf(stderr, "lance: got packet, len %d\n", size);
-#endif
+ DPRINTF("got packet, len %d\n", size);
return;
}
}
@@ -363,40 +347,36 @@ static void lance_send(void *opaque)
LANCEState *s = opaque;
uint32_t dmaptr = s->leptr + s->ledmaregs[3];
struct lance_init_block *ib;
- unsigned int i, old_txptr, j;
- uint16_t temp;
+ unsigned int i, old_txptr;
+ uint16_t temp16;
+ uint8_t temp8;
char pkt_buf[PKT_BUF_SZ];
+ DPRINTF("sending packet? (csr0 %4.4x)\n", s->regs[LE_CSR0]);
if ((s->regs[LE_CSR0] & LE_C0_STOP) == LE_C0_STOP)
return;
ib = (void *) iommu_translate(dmaptr);
+ DPRINTF("sending packet? (dmaptr %8.8x) (ib %p) (btx_ring %p)\n", dmaptr, ib, &ib->btx_ring);
old_txptr = s->txptr;
for (i = s->txptr; i != ((old_txptr - 1) & TX_RING_MOD_MASK); i = (i + 1) & TX_RING_MOD_MASK) {
- cpu_physical_memory_read((uint32_t)&ib->btx_ring[i].tmd1_bits, (void *) &temp, 1);
- if (temp == (LE_T1_POK|LE_T1_OWN)) {
- cpu_physical_memory_read((uint32_t)&ib->btx_ring[i].length, (void *) &temp, 2);
- bswap16s(&temp);
- temp = (~temp) + 1;
-#if 0
- cpu_physical_memory_read((uint32_t)&ib->tx_buf[i], pkt_buf, temp);
-#else
- for (j = 0; j < temp; j++) {
- cpu_physical_memory_read((uint32_t)&ib->tx_buf[i] + j, &pkt_buf[j], 1);
- }
-#endif
-
-#ifdef DEBUG_LANCE
- fprintf(stderr, "lance: sending packet, len %d\n", temp);
-#endif
- qemu_send_packet(s->nd, pkt_buf, temp);
- temp = LE_T1_POK;
- cpu_physical_memory_write((uint32_t)&ib->btx_ring[i].tmd1_bits, (void *) &temp, 1);
+ cpu_physical_memory_read((uint32_t)&ib->btx_ring[i].tmd1_bits, (void *) &temp8, 1);
+ if (temp8 == (LE_T1_POK|LE_T1_OWN)) {
+ cpu_physical_memory_read((uint32_t)&ib->btx_ring[i].length, (void *) &temp16, 2);
+ bswap16s(&temp16);
+ temp16 = (~temp16) + 1;
+ cpu_physical_memory_read((uint32_t)&ib->tx_buf[i], pkt_buf, temp16);
+ DPRINTF("sending packet, len %d\n", temp16);
+ qemu_send_packet(s->nd, pkt_buf, temp16);
+ temp8 = LE_T1_POK;
+ cpu_physical_memory_write((uint32_t)&ib->btx_ring[i].tmd1_bits, (void *) &temp8, 1);
s->txptr = (s->txptr + 1) & TX_RING_MOD_MASK;
s->regs[LE_CSR0] |= LE_C0_TINT | LE_C0_INTR;
}
}
+ if ((s->regs[LE_CSR0] & LE_C0_INTR) && (s->regs[LE_CSR0] & LE_C0_INEA))
+ pic_set_irq(s->irq, 1);
}
static uint32_t ledma_mem_readl(void *opaque, target_phys_addr_t addr)
@@ -436,7 +416,7 @@ static void lance_save(QEMUFile *f, void *opaque)
qemu_put_be32s(f, &s->leptr);
qemu_put_be16s(f, &s->addr);
- for (i = 0; i < LE_MAXREG; i ++)
+ for (i = 0; i < LE_NREGS; i ++)
qemu_put_be16s(f, &s->regs[i]);
qemu_put_buffer(f, s->phys, 6);
qemu_put_be32s(f, &s->irq);
@@ -454,7 +434,7 @@ static int lance_load(QEMUFile *f, void *opaque, int version_id)
qemu_get_be32s(f, &s->leptr);
qemu_get_be16s(f, &s->addr);
- for (i = 0; i < LE_MAXREG; i ++)
+ for (i = 0; i < LE_NREGS; i ++)
qemu_get_be16s(f, &s->regs[i]);
qemu_get_buffer(f, s->phys, 6);
qemu_get_be32s(f, &s->irq);
@@ -476,7 +456,7 @@ void lance_init(NetDriverState *nd, int irq, uint32_t leaddr, uint32_t ledaddr)
s->irq = irq;
lance_io_memory = cpu_register_io_memory(0, lance_mem_read, lance_mem_write, s);
- cpu_register_physical_memory(leaddr, 8, lance_io_memory);
+ cpu_register_physical_memory(leaddr, 4, lance_io_memory);
ledma_io_memory = cpu_register_io_memory(0, ledma_mem_read, ledma_mem_write, s);
cpu_register_physical_memory(ledaddr, 16, ledma_io_memory);
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-13 10:47:52 +0000