/*
* QEMU AMD PC-Net II (Am79C970A) emulation
- *
+ *
* 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
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
-
+
/* This software was written to be compatible with the specification:
* AMD Am79C970A PCnet-PCI II Ethernet Controller Data-Sheet
* AMD Publication# 19436 Rev:E Amendment/0 Issue Date: June 2000
*/
-
+
/*
* On Sparc32, this is the Lance (Am7990) part of chip STP2000 (Master I/O), also
* produced as NCR89C100. See
static inline int padr_match(PCNetState *s, const uint8_t *buf, int size)
{
struct qemu_ether_header *hdr = (void *)buf;
- uint8_t padr[6] = {
+ uint8_t padr[6] = {
s->csr[12] & 0xff, s->csr[12] >> 8,
s->csr[13] & 0xff, s->csr[13] >> 8,
- s->csr[14] & 0xff, s->csr[14] >> 8
+ s->csr[14] & 0xff, s->csr[14] >> 8
};
int result = (!CSR_DRCVPA(s)) && !memcmp(hdr->ether_dhost, padr, 6);
#ifdef PCNET_DEBUG_MATCH
static inline int ladr_match(PCNetState *s, const uint8_t *buf, int size)
{
struct qemu_ether_header *hdr = (void *)buf;
- if ((*(hdr->ether_dhost)&0x01) &&
+ if ((*(hdr->ether_dhost)&0x01) &&
((uint64_t *)&s->csr[8])[0] != 0LL) {
- uint8_t ladr[8] = {
+ uint8_t ladr[8] = {
s->csr[8] & 0xff, s->csr[8] >> 8,
s->csr[9] & 0xff, s->csr[9] >> 8,
- s->csr[10] & 0xff, s->csr[10] >> 8,
- s->csr[11] & 0xff, s->csr[11] >> 8
+ s->csr[10] & 0xff, s->csr[10] >> 8,
+ s->csr[11] & 0xff, s->csr[11] >> 8
};
int index = lnc_mchash(hdr->ether_dhost) >> 26;
return !!(ladr[index >> 3] & (1 << (index & 7)));
return 0;
}
-static inline target_phys_addr_t pcnet_rdra_addr(PCNetState *s, int idx)
+static inline target_phys_addr_t pcnet_rdra_addr(PCNetState *s, int idx)
{
while (idx < 1) idx += CSR_RCVRL(s);
return s->rdra + ((CSR_RCVRL(s) - idx) * (BCR_SWSTYLE(s) ? 16 : 8));
static inline int64_t pcnet_get_next_poll_time(PCNetState *s, int64_t current_time)
{
- int64_t next_time = current_time +
- muldiv64(65536 - (CSR_SPND(s) ? 0 : CSR_POLL(s)),
+ int64_t next_time = current_time +
+ muldiv64(65536 - (CSR_SPND(s) ? 0 : CSR_POLL(s)),
ticks_per_sec, 33000000L);
if (next_time <= current_time)
next_time = current_time + 1;
s->rdra = 0;
s->tdra = 0;
s->rap = 0;
-
+
s->bcr[BCR_BSBC] &= ~0x0080;
s->csr[0] = 0x0004;
{
int isr = 0;
s->csr[0] &= ~0x0080;
-
+
#if 1
if (((s->csr[0] & ~s->csr[3]) & 0x5f00) ||
(((s->csr[4]>>1) & ~s->csr[4]) & 0x0115) ||
(!!(s->csr[5] & 0x0008) && !!(s->csr[5] & 0x0010)) /* MPINT */)
#endif
{
-
+
isr = CSR_INEA(s);
s->csr[0] |= 0x0080;
}
-
+
if (!!(s->csr[4] & 0x0080) && CSR_INEA(s)) { /* UINT */
s->csr[4] &= ~0x0080;
s->csr[4] |= 0x0040;
}
#if 1
- if (((s->csr[5]>>1) & s->csr[5]) & 0x0500)
+ if (((s->csr[5]>>1) & s->csr[5]) & 0x0500)
#else
if ((!!(s->csr[5] & 0x0400) && !!(s->csr[5] & 0x0800)) /* SINT */ ||
(!!(s->csr[5] & 0x0100) && !!(s->csr[5] & 0x0200)) /* SLPINT */ )
#ifdef PCNET_DEBUG
printf("pcnet_init init_addr=0x%08x\n", PHYSADDR(s,CSR_IADR(s)));
#endif
-
+
if (BCR_SSIZE32(s)) {
struct pcnet_initblk32 initblk;
s->phys_mem_read(s->dma_opaque, PHYSADDR(s,CSR_IADR(s)),
CSR_XMTRC(s) = CSR_XMTRL(s);
#ifdef PCNET_DEBUG
- printf("pcnet ss32=%d rdra=0x%08x[%d] tdra=0x%08x[%d]\n",
+ printf("pcnet ss32=%d rdra=0x%08x[%d] tdra=0x%08x[%d]\n",
BCR_SSIZE32(s),
s->rdra, CSR_RCVRL(s), s->tdra, CSR_XMTRL(s));
#endif
- s->csr[0] |= 0x0101;
+ s->csr[0] |= 0x0101;
s->csr[0] &= ~0x0004; /* clear STOP bit */
}
if (!CSR_DTX(s))
s->csr[0] |= 0x0010; /* set TXON */
-
+
if (!CSR_DRX(s))
s->csr[0] |= 0x0020; /* set RXON */
target_phys_addr_t nrda = pcnet_rdra_addr(s, -1 + CSR_RCVRC(s));
target_phys_addr_t nnrd = pcnet_rdra_addr(s, -2 + CSR_RCVRC(s));
#else
- target_phys_addr_t crda = s->rdra +
+ target_phys_addr_t crda = s->rdra +
(CSR_RCVRL(s) - CSR_RCVRC(s)) *
(BCR_SWSTYLE(s) ? 16 : 8 );
int nrdc = CSR_RCVRC(s)<=1 ? CSR_RCVRL(s) : CSR_RCVRC(s)-1;
- target_phys_addr_t nrda = s->rdra +
+ target_phys_addr_t nrda = s->rdra +
(CSR_RCVRL(s) - nrdc) *
(BCR_SWSTYLE(s) ? 16 : 8 );
int nnrc = nrdc<=1 ? CSR_RCVRL(s) : nrdc-1;
- target_phys_addr_t nnrd = s->rdra +
+ target_phys_addr_t nnrd = s->rdra +
(CSR_RCVRL(s) - nnrc) *
(BCR_SWSTYLE(s) ? 16 : 8 );
#endif
#endif
}
}
-
+
if (CSR_CRDA(s)) {
struct pcnet_RMD rmd;
RMDLOAD(&rmd, PHYSADDR(s,CSR_CRDA(s)));
} else {
CSR_CRBC(s) = CSR_CRST(s) = 0;
}
-
+
if (CSR_NRDA(s)) {
struct pcnet_RMD rmd;
RMDLOAD(&rmd, PHYSADDR(s,CSR_NRDA(s)));
{
s->csr[34] = s->csr[35] = 0;
if (s->tdra) {
- target_phys_addr_t cxda = s->tdra +
+ target_phys_addr_t cxda = s->tdra +
(CSR_XMTRL(s) - CSR_XMTRC(s)) *
(BCR_SWSTYLE(s) ? 16 : 8);
int bad = 0;
if (CSR_CXDA(s)) {
struct pcnet_TMD tmd;
- TMDLOAD(&tmd, PHYSADDR(s,CSR_CXDA(s)));
+ TMDLOAD(&tmd, PHYSADDR(s,CSR_CXDA(s)));
CSR_CXBC(s) = GET_FIELD(tmd.length, TMDL, BCNT);
CSR_CXST(s) = tmd.status;
} else {
CSR_CXBC(s) = CSR_CXST(s) = 0;
}
-
+
return !!(CSR_CXST(s) & 0x8000);
}
PCNetState *s = opaque;
if (CSR_STOP(s) || CSR_SPND(s))
return 0;
-
+
if (s->recv_pos > 0)
return 0;
size = MIN_BUF_SIZE;
}
- if (CSR_PROM(s)
- || (is_padr=padr_match(s, buf, size))
+ if (CSR_PROM(s)
+ || (is_padr=padr_match(s, buf, size))
|| (is_bcast=padr_bcast(s, buf, size))
|| (is_ladr=ladr_match(s, buf, size))) {
nrda = s->rdra +
(CSR_RCVRL(s) - rcvrc) *
(BCR_SWSTYLE(s) ? 16 : 8 );
- RMDLOAD(&rmd, PHYSADDR(s,nrda));
+ RMDLOAD(&rmd, PHYSADDR(s,nrda));
if (GET_FIELD(rmd.status, RMDS, OWN)) {
#ifdef PCNET_DEBUG_RMD
- printf("pcnet - scan buffer: RCVRC=%d PREV_RCVRC=%d\n",
+ printf("pcnet - scan buffer: RCVRC=%d PREV_RCVRC=%d\n",
rcvrc, CSR_RCVRC(s));
#endif
CSR_RCVRC(s) = rcvrc;
int pktcount = 0;
memcpy(src, buf, size);
-
+
#if 1
/* no need to compute the CRC */
src[size] = 0;
while (size < 46) {
src[size++] = 0;
}
-
+
while (p != &src[size]) {
CRC(fcs, *p++);
}
PCNET_RECV_STORE();
}
}
- }
+ }
}
#undef PCNET_RECV_STORE
s->csr[0] |= 0x0400;
#ifdef PCNET_DEBUG
- printf("RCVRC=%d CRDA=0x%08x BLKS=%d\n",
+ printf("RCVRC=%d CRDA=0x%08x BLKS=%d\n",
CSR_RCVRC(s), PHYSADDR(s,CSR_CRDA(s)), pktcount);
#endif
#ifdef PCNET_DEBUG_RMD
PRINT_RMD(&rmd);
-#endif
+#endif
while (pktcount--) {
if (CSR_RCVRC(s) <= 1)
CSR_RCVRC(s) = CSR_RCVRL(s);
else
- CSR_RCVRC(s)--;
+ CSR_RCVRC(s)--;
}
-
+
pcnet_rdte_poll(s);
- }
+ }
}
pcnet_poll(s);
- pcnet_update_irq(s);
+ pcnet_update_irq(s);
}
static void pcnet_transmit(PCNetState *s)
target_phys_addr_t xmit_cxda = 0;
int count = CSR_XMTRL(s)-1;
s->xmit_pos = -1;
-
+
if (!CSR_TXON(s)) {
s->csr[0] &= ~0x0008;
return;
if (count--)
goto txagain;
- } else
+ } else
if (s->xmit_pos >= 0) {
struct pcnet_TMD tmd;
TMDLOAD(&tmd, PHYSADDR(s,xmit_cxda));
pcnet_rdte_poll(s);
}
- if (CSR_TDMD(s) ||
+ if (CSR_TDMD(s) ||
(CSR_TXON(s) && !CSR_DPOLL(s) && pcnet_tdte_poll(s)))
{
/* prevent recursion */
pcnet_transmit(s);
}
- pcnet_update_irq(s);
+ pcnet_update_irq(s);
if (!CSR_STOP(s) && !CSR_SPND(s) && !CSR_DPOLL(s)) {
uint64_t now = qemu_get_clock(vm_clock) * 33;
} else
CSR_POLL(s) = t;
}
- qemu_mod_timer(s->poll_timer,
+ qemu_mod_timer(s->poll_timer,
pcnet_get_next_poll_time(s,qemu_get_clock(vm_clock)));
}
}
if (!CSR_STRT(s) && (val & 2))
pcnet_start(s);
- if (CSR_TDMD(s))
+ if (CSR_TDMD(s))
pcnet_transmit(s);
return;
case 3:
break;
case 4:
- s->csr[4] &= ~(val & 0x026a);
+ s->csr[4] &= ~(val & 0x026a);
val &= ~0x026a; val |= s->csr[4] & 0x026a;
break;
case 5:
- s->csr[5] &= ~(val & 0x0a90);
+ s->csr[5] &= ~(val & 0x0a90);
val &= ~0x0a90; val |= s->csr[5] & 0x0a90;
break;
case 16:
PCNetState *s = opaque;
#ifdef PCNET_DEBUG
printf("pcnet_aprom_writeb addr=0x%08x val=0x%02x\n", addr, val);
-#endif
+#endif
/* Check APROMWE bit to enable write access */
if (pcnet_bcr_readw(s,2) & 0x80)
s->prom[addr & 15] = val;
-}
+}
static uint32_t pcnet_aprom_readb(void *opaque, uint32_t addr)
{
pcnet_bcr_writew(s, BCR_BSBC, pcnet_bcr_readw(s, BCR_BSBC) | 0x0080);
#ifdef PCNET_DEBUG_IO
printf("device switched into dword i/o mode\n");
-#endif
+#endif
}
pcnet_update_irq(s);
}
PCNetState *s = opaque;
uint32_t val = -1;
pcnet_poll_timer(s);
- if (BCR_DWIO(s)) {
+ if (BCR_DWIO(s)) {
switch (addr & 0x0f) {
case 0x00: /* RDP */
val = pcnet_csr_readw(s, s->rap);
return val;
}
-static void pcnet_ioport_map(PCIDevice *pci_dev, int region_num,
+static void pcnet_ioport_map(PCIDevice *pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
PCNetState *d = (PCNetState *)pci_dev;
register_ioport_write(addr, 16, 1, pcnet_aprom_writeb, d);
register_ioport_read(addr, 16, 1, pcnet_aprom_readb, d);
-
+
register_ioport_write(addr + 0x10, 0x10, 2, pcnet_ioport_writew, d);
register_ioport_read(addr + 0x10, 0x10, 2, pcnet_ioport_readw, d);
register_ioport_write(addr + 0x10, 0x10, 4, pcnet_ioport_writel, d);
pcnet_aprom_writeb(d, addr & 0x0f, val);
}
-static uint32_t pcnet_mmio_readb(void *opaque, target_phys_addr_t addr)
+static uint32_t pcnet_mmio_readb(void *opaque, target_phys_addr_t addr)
{
PCNetState *d = opaque;
uint32_t val = -1;
}
}
-static uint32_t pcnet_mmio_readw(void *opaque, target_phys_addr_t addr)
+static uint32_t pcnet_mmio_readw(void *opaque, target_phys_addr_t addr)
{
PCNetState *d = opaque;
uint32_t val = -1;
}
}
-static uint32_t pcnet_mmio_readl(void *opaque, target_phys_addr_t addr)
+static uint32_t pcnet_mmio_readl(void *opaque, target_phys_addr_t addr)
{
PCNetState *d = opaque;
uint32_t val;
(CPUReadMemoryFunc *)&pcnet_mmio_readl
};
-static void pcnet_mmio_map(PCIDevice *pci_dev, int region_num,
+static void pcnet_mmio_map(PCIDevice *pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
PCNetState *d = (PCNetState *)pci_dev;
uint8_t *pci_conf;
#if 0
- printf("sizeof(RMD)=%d, sizeof(TMD)=%d\n",
+ printf("sizeof(RMD)=%d, sizeof(TMD)=%d\n",
sizeof(struct pcnet_RMD), sizeof(struct pcnet_TMD));
#endif
d = (PCNetState *)pci_register_device(bus, "PCNet", sizeof(PCNetState),
devfn, NULL, NULL);
-
+
pci_conf = d->dev.config;
-
+
*(uint16_t *)&pci_conf[0x00] = cpu_to_le16(0x1022);
- *(uint16_t *)&pci_conf[0x02] = cpu_to_le16(0x2000);
- *(uint16_t *)&pci_conf[0x04] = cpu_to_le16(0x0007);
+ *(uint16_t *)&pci_conf[0x02] = cpu_to_le16(0x2000);
+ *(uint16_t *)&pci_conf[0x04] = cpu_to_le16(0x0007);
*(uint16_t *)&pci_conf[0x06] = cpu_to_le16(0x0280);
pci_conf[0x08] = 0x10;
pci_conf[0x09] = 0x00;
- pci_conf[0x0a] = 0x00; // ethernet network controller
+ pci_conf[0x0a] = 0x00; // ethernet network controller
pci_conf[0x0b] = 0x02;
pci_conf[0x0e] = 0x00; // header_type
-
+
*(uint32_t *)&pci_conf[0x10] = cpu_to_le32(0x00000001);
*(uint32_t *)&pci_conf[0x14] = cpu_to_le32(0x00000000);
-
+
pci_conf[0x3d] = 1; // interrupt pin 0
pci_conf[0x3e] = 0x06;
pci_conf[0x3f] = 0xff;
d->mmio_index =
cpu_register_io_memory(0, pcnet_mmio_read, pcnet_mmio_write, d);
- pci_register_io_region((PCIDevice *)d, 0, PCNET_IOPORT_SIZE,
+ pci_register_io_region((PCIDevice *)d, 0, PCNET_IOPORT_SIZE,
PCI_ADDRESS_SPACE_IO, pcnet_ioport_map);
-
- pci_register_io_region((PCIDevice *)d, 1, PCNET_PNPMMIO_SIZE,
+
+ pci_register_io_region((PCIDevice *)d, 1, PCNET_PNPMMIO_SIZE,
PCI_ADDRESS_SPACE_MEM, pcnet_mmio_map);
-
+
d->irq = d->dev.irq[0];
d->phys_mem_read = pci_physical_memory_read;
d->phys_mem_write = pci_physical_memory_write;
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