/*
* 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
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* 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
*/
#include "vl.h"
//#define PCNET_DEBUG
//#define PCNET_DEBUG_IO
//#define PCNET_DEBUG_BCR
//#define PCNET_DEBUG_CSR
//#define PCNET_DEBUG_RMD
//#define PCNET_DEBUG_TMD
//#define PCNET_DEBUG_MATCH
#define PCNET_IOPORT_SIZE 0x20
#define PCNET_PNPMMIO_SIZE 0x20
typedef struct PCNetState_st PCNetState;
struct PCNetState_st {
PCIDevice dev;
VLANClientState *vc;
NICInfo *nd;
QEMUTimer *poll_timer;
int mmio_io_addr, rap, isr, lnkst;
target_phys_addr_t rdra, tdra;
uint8_t prom[16];
uint16_t csr[128];
uint16_t bcr[32];
uint64_t timer;
int xmit_pos, recv_pos;
uint8_t buffer[4096];
};
#ifdef __GNUC__
#define PACKED(A) A __attribute__ ((packed))
#else
#error FixMe
#endif
struct qemu_ether_header {
uint8_t ether_dhost[6];
uint8_t ether_shost[6];
uint16_t ether_type;
};
/* BUS CONFIGURATION REGISTERS */
#define BCR_MSRDA 0
#define BCR_MSWRA 1
#define BCR_MC 2
#define BCR_LNKST 4
#define BCR_LED1 5
#define BCR_LED2 6
#define BCR_LED3 7
#define BCR_FDC 9
#define BCR_BSBC 18
#define BCR_EECAS 19
#define BCR_SWS 20
#define BCR_PLAT 22
#define BCR_DWIO(S) !!((S)->bcr[BCR_BSBC] & 0x0080)
#define BCR_SSIZE32(S) !!((S)->bcr[BCR_SWS ] & 0x0100)
#define BCR_SWSTYLE(S) ((S)->bcr[BCR_SWS ] & 0x00FF)
#define CSR_INIT(S) !!(((S)->csr[0])&0x0001)
#define CSR_STRT(S) !!(((S)->csr[0])&0x0002)
#define CSR_STOP(S) !!(((S)->csr[0])&0x0004)
#define CSR_TDMD(S) !!(((S)->csr[0])&0x0008)
#define CSR_TXON(S) !!(((S)->csr[0])&0x0010)
#define CSR_RXON(S) !!(((S)->csr[0])&0x0020)
#define CSR_INEA(S) !!(((S)->csr[0])&0x0040)
#define CSR_LAPPEN(S) !!(((S)->csr[3])&0x0020)
#define CSR_DXSUFLO(S) !!(((S)->csr[3])&0x0040)
#define CSR_ASTRP_RCV(S) !!(((S)->csr[4])&0x0800)
#define CSR_DPOLL(S) !!(((S)->csr[4])&0x1000)
#define CSR_SPND(S) !!(((S)->csr[5])&0x0001)
#define CSR_LTINTEN(S) !!(((S)->csr[5])&0x4000)
#define CSR_TOKINTD(S) !!(((S)->csr[5])&0x8000)
#define CSR_DRX(S) !!(((S)->csr[15])&0x0001)
#define CSR_DTX(S) !!(((S)->csr[15])&0x0002)
#define CSR_LOOP(S) !!(((S)->csr[15])&0x0004)
#define CSR_DRCVPA(S) !!(((S)->csr[15])&0x2000)
#define CSR_DRCVBC(S) !!(((S)->csr[15])&0x4000)
#define CSR_PROM(S) !!(((S)->csr[15])&0x8000)
#define CSR_CRBC(S) ((S)->csr[40])
#define CSR_CRST(S) ((S)->csr[41])
#define CSR_CXBC(S) ((S)->csr[42])
#define CSR_CXST(S) ((S)->csr[43])
#define CSR_NRBC(S) ((S)->csr[44])
#define CSR_NRST(S) ((S)->csr[45])
#define CSR_POLL(S) ((S)->csr[46])
#define CSR_PINT(S) ((S)->csr[47])
#define CSR_RCVRC(S) ((S)->csr[72])
#define CSR_XMTRC(S) ((S)->csr[74])
#define CSR_RCVRL(S) ((S)->csr[76])
#define CSR_XMTRL(S) ((S)->csr[78])
#define CSR_MISSC(S) ((S)->csr[112])
#define CSR_IADR(S) ((S)->csr[ 1] | ((S)->csr[ 2] << 16))
#define CSR_CRBA(S) ((S)->csr[18] | ((S)->csr[19] << 16))
#define CSR_CXBA(S) ((S)->csr[20] | ((S)->csr[21] << 16))
#define CSR_NRBA(S) ((S)->csr[22] | ((S)->csr[23] << 16))
#define CSR_BADR(S) ((S)->csr[24] | ((S)->csr[25] << 16))
#define CSR_NRDA(S) ((S)->csr[26] | ((S)->csr[27] << 16))
#define CSR_CRDA(S) ((S)->csr[28] | ((S)->csr[29] << 16))
#define CSR_BADX(S) ((S)->csr[30] | ((S)->csr[31] << 16))
#define CSR_NXDA(S) ((S)->csr[32] | ((S)->csr[33] << 16))
#define CSR_CXDA(S) ((S)->csr[34] | ((S)->csr[35] << 16))
#define CSR_NNRD(S) ((S)->csr[36] | ((S)->csr[37] << 16))
#define CSR_NNXD(S) ((S)->csr[38] | ((S)->csr[39] << 16))
#define CSR_PXDA(S) ((S)->csr[60] | ((S)->csr[61] << 16))
#define CSR_NXBA(S) ((S)->csr[64] | ((S)->csr[65] << 16))
#define PHYSADDR(S,A) \
(BCR_SSIZE32(S) ? (A) : (A) | ((0xff00 & (uint32_t)(s)->csr[2])<<16))
struct pcnet_initblk16 {
uint16_t mode;
uint16_t padr1;
uint16_t padr2;
uint16_t padr3;
uint16_t ladrf1;
uint16_t ladrf2;
uint16_t ladrf3;
uint16_t ladrf4;
unsigned PACKED(rdra:24);
unsigned PACKED(res1:5);
unsigned PACKED(rlen:3);
unsigned PACKED(tdra:24);
unsigned PACKED(res2:5);
unsigned PACKED(tlen:3);
};
struct pcnet_initblk32 {
uint16_t mode;
unsigned PACKED(res1:4);
unsigned PACKED(rlen:4);
unsigned PACKED(res2:4);
unsigned PACKED(tlen:4);
uint16_t padr1;
uint16_t padr2;
uint16_t padr3;
uint16_t _res;
uint16_t ladrf1;
uint16_t ladrf2;
uint16_t ladrf3;
uint16_t ladrf4;
uint32_t rdra;
uint32_t tdra;
};
struct pcnet_TMD {
struct {
unsigned tbadr:32;
} tmd0;
struct {
unsigned PACKED(bcnt:12), PACKED(ones:4), PACKED(res:7), PACKED(bpe:1);
unsigned PACKED(enp:1), PACKED(stp:1), PACKED(def:1), PACKED(one:1);
unsigned PACKED(ltint:1), PACKED(nofcs:1), PACKED(err:1), PACKED(own:1);
} tmd1;
struct {
unsigned PACKED(trc:4), PACKED(res:12);
unsigned PACKED(tdr:10), PACKED(rtry:1), PACKED(lcar:1);
unsigned PACKED(lcol:1), PACKED(exdef:1), PACKED(uflo:1), PACKED(buff:1);
} tmd2;
struct {
unsigned res:32;
} tmd3;
};
struct pcnet_RMD {
struct {
unsigned rbadr:32;
} rmd0;
struct {
unsigned PACKED(bcnt:12), PACKED(ones:4), PACKED(res:4);
unsigned PACKED(bam:1), PACKED(lafm:1), PACKED(pam:1), PACKED(bpe:1);
unsigned PACKED(enp:1), PACKED(stp:1), PACKED(buff:1), PACKED(crc:1);
unsigned PACKED(oflo:1), PACKED(fram:1), PACKED(err:1), PACKED(own:1);
} rmd1;
struct {
unsigned PACKED(mcnt:12), PACKED(zeros:4);
unsigned PACKED(rpc:8), PACKED(rcc:8);
} rmd2;
struct {
unsigned res:32;
} rmd3;
};
#define PRINT_TMD(T) printf( \
"TMD0 : TBADR=0x%08x\n" \
"TMD1 : OWN=%d, ERR=%d, FCS=%d, LTI=%d, " \
"ONE=%d, DEF=%d, STP=%d, ENP=%d,\n" \
" BPE=%d, BCNT=%d\n" \
"TMD2 : BUF=%d, UFL=%d, EXD=%d, LCO=%d, " \
"LCA=%d, RTR=%d,\n" \
" TDR=%d, TRC=%d\n", \
(T)->tmd0.tbadr, \
(T)->tmd1.own, (T)->tmd1.err, (T)->tmd1.nofcs, \
(T)->tmd1.ltint, (T)->tmd1.one, (T)->tmd1.def, \
(T)->tmd1.stp, (T)->tmd1.enp, (T)->tmd1.bpe, \
4096-(T)->tmd1.bcnt, \
(T)->tmd2.buff, (T)->tmd2.uflo, (T)->tmd2.exdef,\
(T)->tmd2.lcol, (T)->tmd2.lcar, (T)->tmd2.rtry, \
(T)->tmd2.tdr, (T)->tmd2.trc)
#define PRINT_RMD(R) printf( \
"RMD0 : RBADR=0x%08x\n" \
"RMD1 : OWN=%d, ERR=%d, FRAM=%d, OFLO=%d, " \
"CRC=%d, BUFF=%d, STP=%d, ENP=%d,\n " \
"BPE=%d, PAM=%d, LAFM=%d, BAM=%d, ONES=%d, BCNT=%d\n" \
"RMD2 : RCC=%d, RPC=%d, MCNT=%d, ZEROS=%d\n", \
(R)->rmd0.rbadr, \
(R)->rmd1.own, (R)->rmd1.err, (R)->rmd1.fram, \
(R)->rmd1.oflo, (R)->rmd1.crc, (R)->rmd1.buff, \
(R)->rmd1.stp, (R)->rmd1.enp, (R)->rmd1.bpe, \
(R)->rmd1.pam, (R)->rmd1.lafm, (R)->rmd1.bam, \
(R)->rmd1.ones, 4096-(R)->rmd1.bcnt, \
(R)->rmd2.rcc, (R)->rmd2.rpc, (R)->rmd2.mcnt, \
(R)->rmd2.zeros)
static inline void pcnet_tmd_load(PCNetState *s, struct pcnet_TMD *tmd, target_phys_addr_t addr)
{
if (!BCR_SWSTYLE(s)) {
uint16_t xda[4];
cpu_physical_memory_read(addr,
(void *)&xda[0], sizeof(xda));
((uint32_t *)tmd)[0] = (xda[0]&0xffff) |
((xda[1]&0x00ff) << 16);
((uint32_t *)tmd)[1] = (xda[2]&0xffff)|
((xda[1] & 0xff00) << 16);
((uint32_t *)tmd)[2] =
(xda[3] & 0xffff) << 16;
((uint32_t *)tmd)[3] = 0;
}
else
if (BCR_SWSTYLE(s) != 3)
cpu_physical_memory_read(addr, (void *)tmd, 16);
else {
uint32_t xda[4];
cpu_physical_memory_read(addr,
(void *)&xda[0], sizeof(xda));
((uint32_t *)tmd)[0] = xda[2];
((uint32_t *)tmd)[1] = xda[1];
((uint32_t *)tmd)[2] = xda[0];
((uint32_t *)tmd)[3] = xda[3];
}
}
static inline void pcnet_tmd_store(PCNetState *s, struct pcnet_TMD *tmd, target_phys_addr_t addr)
{
if (!BCR_SWSTYLE(s)) {
uint16_t xda[4];
xda[0] = ((uint32_t *)tmd)[0] & 0xffff;
xda[1] = ((((uint32_t *)tmd)[0]>>16)&0x00ff) |
((((uint32_t *)tmd)[1]>>16)&0xff00);
xda[2] = ((uint32_t *)tmd)[1] & 0xffff;
xda[3] = ((uint32_t *)tmd)[2] >> 16;
cpu_physical_memory_write(addr,
(void *)&xda[0], sizeof(xda));
}
else {
if (BCR_SWSTYLE(s) != 3)
cpu_physical_memory_write(addr, (void *)tmd, 16);
else {
uint32_t xda[4];
xda[0] = ((uint32_t *)tmd)[2];
xda[1] = ((uint32_t *)tmd)[1];
xda[2] = ((uint32_t *)tmd)[0];
xda[3] = ((uint32_t *)tmd)[3];
cpu_physical_memory_write(addr,
(void *)&xda[0], sizeof(xda));
}
}
}
static inline void pcnet_rmd_load(PCNetState *s, struct pcnet_RMD *rmd, target_phys_addr_t addr)
{
if (!BCR_SWSTYLE(s)) {
uint16_t rda[4];
cpu_physical_memory_read(addr,
(void *)&rda[0], sizeof(rda));
((uint32_t *)rmd)[0] = (rda[0]&0xffff)|
((rda[1] & 0x00ff) << 16);
((uint32_t *)rmd)[1] = (rda[2]&0xffff)|
((rda[1] & 0xff00) << 16);
((uint32_t *)rmd)[2] = rda[3] & 0xffff;
((uint32_t *)rmd)[3] = 0;
}
else
if (BCR_SWSTYLE(s) != 3)
cpu_physical_memory_read(addr, (void *)rmd, 16);
else {
uint32_t rda[4];
cpu_physical_memory_read(addr,
(void *)&rda[0], sizeof(rda));
((uint32_t *)rmd)[0] = rda[2];
((uint32_t *)rmd)[1] = rda[1];
((uint32_t *)rmd)[2] = rda[0];
((uint32_t *)rmd)[3] = rda[3];
}
}
static inline void pcnet_rmd_store(PCNetState *s, struct pcnet_RMD *rmd, target_phys_addr_t addr)
{
if (!BCR_SWSTYLE(s)) {
uint16_t rda[4]; \
rda[0] = ((uint32_t *)rmd)[0] & 0xffff; \
rda[1] = ((((uint32_t *)rmd)[0]>>16)&0xff)|\
((((uint32_t *)rmd)[1]>>16)&0xff00);\
rda[2] = ((uint32_t *)rmd)[1] & 0xffff; \
rda[3] = ((uint32_t *)rmd)[2] & 0xffff; \
cpu_physical_memory_write(addr, \
(void *)&rda[0], sizeof(rda)); \
}
else {
if (BCR_SWSTYLE(s) != 3)
cpu_physical_memory_write(addr, (void *)rmd, 16);
else {
uint32_t rda[4];
rda[0] = ((uint32_t *)rmd)[2];
rda[1] = ((uint32_t *)rmd)[1];
rda[2] = ((uint32_t *)rmd)[0];
rda[3] = ((uint32_t *)rmd)[3];
cpu_physical_memory_write(addr,
(void *)&rda[0], sizeof(rda));
}
}
}
#define TMDLOAD(TMD,ADDR) pcnet_tmd_load(s,TMD,ADDR)
#define TMDSTORE(TMD,ADDR) pcnet_tmd_store(s,TMD,ADDR)
#define RMDLOAD(RMD,ADDR) pcnet_rmd_load(s,RMD,ADDR)
#define RMDSTORE(RMD,ADDR) pcnet_rmd_store(s,RMD,ADDR)
#if 1
#define CHECK_RMD(ADDR,RES) do { \
struct pcnet_RMD rmd; \
RMDLOAD(&rmd,(ADDR)); \
(RES) |= (rmd.rmd1.ones != 15) \
|| (rmd.rmd2.zeros != 0); \
} while (0)
#define CHECK_TMD(ADDR,RES) do { \
struct pcnet_TMD tmd; \
TMDLOAD(&tmd,(ADDR)); \
(RES) |= (tmd.tmd1.ones != 15); \
} while (0)
#else
#define CHECK_RMD(ADDR,RES) do { \
switch (BCR_SWSTYLE(s)) { \
case 0x00: \
do { \
uint16_t rda[4]; \
cpu_physical_memory_read((ADDR), \
(void *)&rda[0], sizeof(rda)); \
(RES) |= (rda[2] & 0xf000)!=0xf000; \
(RES) |= (rda[3] & 0xf000)!=0x0000; \
} while (0); \
break; \
case 0x01: \
case 0x02: \
do { \
uint32_t rda[4]; \
cpu_physical_memory_read((ADDR), \
(void *)&rda[0], sizeof(rda)); \
(RES) |= (rda[1] & 0x0000f000L)!=0x0000f000L; \
(RES) |= (rda[2] & 0x0000f000L)!=0x00000000L; \
} while (0); \
break; \
case 0x03: \
do { \
uint32_t rda[4]; \
cpu_physical_memory_read((ADDR), \
(void *)&rda[0], sizeof(rda)); \
(RES) |= (rda[0] & 0x0000f000L)!=0x00000000L; \
(RES) |= (rda[1] & 0x0000f000L)!=0x0000f000L; \
} while (0); \
break; \
} \
} while (0)
#define CHECK_TMD(ADDR,RES) do { \
switch (BCR_SWSTYLE(s)) { \
case 0x00: \
do { \
uint16_t xda[4]; \
cpu_physical_memory_read((ADDR), \
(void *)&xda[0], sizeof(xda)); \
(RES) |= (xda[2] & 0xf000)!=0xf000;\
} while (0); \
break; \
case 0x01: \
case 0x02: \
case 0x03: \
do { \
uint32_t xda[4]; \
cpu_physical_memory_read((ADDR), \
(void *)&xda[0], sizeof(xda)); \
(RES) |= (xda[1] & 0x0000f000L)!=0x0000f000L; \
} while (0); \
break; \
} \
} while (0)
#endif
#define PRINT_PKTHDR(BUF) do { \
struct qemu_ether_header *hdr = (void *)(BUF); \
printf("packet dhost=%02x:%02x:%02x:%02x:%02x:%02x, " \
"shost=%02x:%02x:%02x:%02x:%02x:%02x, " \
"type=0x%04x (bcast=%d)\n", \
hdr->ether_dhost[0],hdr->ether_dhost[1],hdr->ether_dhost[2], \
hdr->ether_dhost[3],hdr->ether_dhost[4],hdr->ether_dhost[5], \
hdr->ether_shost[0],hdr->ether_shost[1],hdr->ether_shost[2], \
hdr->ether_shost[3],hdr->ether_shost[4],hdr->ether_shost[5], \
be16_to_cpu(hdr->ether_type), \
!!ETHER_IS_MULTICAST(hdr->ether_dhost)); \
} while (0)
#define MULTICAST_FILTER_LEN 8
static inline uint32_t lnc_mchash(const uint8_t *ether_addr)
{
#define LNC_POLYNOMIAL 0xEDB88320UL
uint32_t crc = 0xFFFFFFFF;
int idx, bit;
uint8_t data;
for (idx = 0; idx < 6; idx++) {
for (data = *ether_addr++, bit = 0; bit < MULTICAST_FILTER_LEN; bit++) {
crc = (crc >> 1) ^ (((crc ^ data) & 1) ? LNC_POLYNOMIAL : 0);
data >>= 1;
}
}
return crc;
#undef LNC_POLYNOMIAL
}
#define CRC(crc, ch) (crc = (crc >> 8) ^ crctab[(crc ^ (ch)) & 0xff])
/* generated using the AUTODIN II polynomial
* x^32 + x^26 + x^23 + x^22 + x^16 +
* x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x^1 + 1
*/
static const uint32_t crctab[256] = {
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba,
0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3,
0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91,
0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5,
0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940,
0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116,
0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,
0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a,
0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818,
0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457,
0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c,
0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb,
0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086,
0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4,
0x59b33d17, 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad,
0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683,
0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe,
0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7,
0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252,
0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60,
0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79,
0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f,
0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04,
0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21,
0x86d3d2d4, 0xf1d4e242, 0x68ddb3f8, 0x1fda836e,
0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db,
0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0,
0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6,
0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf,
0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
};
static inline int padr_match(PCNetState *s, const uint8_t *buf, int size)
{
struct qemu_ether_header *hdr = (void *)buf;
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
};
int result = (!CSR_DRCVPA(s)) && !bcmp(hdr->ether_dhost, padr, 6);
#ifdef PCNET_DEBUG_MATCH
printf("packet dhost=%02x:%02x:%02x:%02x:%02x:%02x, "
"padr=%02x:%02x:%02x:%02x:%02x:%02x\n",
hdr->ether_dhost[0],hdr->ether_dhost[1],hdr->ether_dhost[2],
hdr->ether_dhost[3],hdr->ether_dhost[4],hdr->ether_dhost[5],
padr[0],padr[1],padr[2],padr[3],padr[4],padr[5]);
printf("padr_match result=%d\n", result);
#endif
return result;
}
static inline int padr_bcast(PCNetState *s, const uint8_t *buf, int size)
{
static uint8_t BCAST[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
struct qemu_ether_header *hdr = (void *)buf;
int result = !CSR_DRCVBC(s) && !bcmp(hdr->ether_dhost, BCAST, 6);
#ifdef PCNET_DEBUG_MATCH
printf("padr_bcast result=%d\n", result);
#endif
return result;
}
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) &&
((uint64_t *)&s->csr[8])[0] != 0LL) {
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
};
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)
{
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)),
ticks_per_sec, 33000000L);
if (next_time <= current_time)
next_time = current_time + 1;
return next_time;
}
static void pcnet_poll(PCNetState *s);
static void pcnet_poll_timer(void *opaque);
static uint32_t pcnet_csr_readw(PCNetState *s, uint32_t rap);
static void pcnet_csr_writew(PCNetState *s, uint32_t rap, uint32_t new_value);
static void pcnet_bcr_writew(PCNetState *s, uint32_t rap, uint32_t val);
static uint32_t pcnet_bcr_readw(PCNetState *s, uint32_t rap);
static void pcnet_s_reset(PCNetState *s)
{
#ifdef PCNET_DEBUG
printf("pcnet_s_reset\n");
#endif
s->lnkst = 0x40;
s->rdra = 0;
s->tdra = 0;
s->rap = 0;
s->bcr[BCR_BSBC] &= ~0x0080;
s->csr[0] = 0x0004;
s->csr[3] = 0x0000;
s->csr[4] = 0x0115;
s->csr[5] = 0x0000;
s->csr[6] = 0x0000;
s->csr[8] = 0;
s->csr[9] = 0;
s->csr[10] = 0;
s->csr[11] = 0;
s->csr[12] = le16_to_cpu(((uint16_t *)&s->prom[0])[0]);
s->csr[13] = le16_to_cpu(((uint16_t *)&s->prom[0])[1]);
s->csr[14] = le16_to_cpu(((uint16_t *)&s->prom[0])[2]);
s->csr[15] &= 0x21c4;
s->csr[72] = 1;
s->csr[74] = 1;
s->csr[76] = 1;
s->csr[78] = 1;
s->csr[80] = 0x1410;
s->csr[88] = 0x1003;
s->csr[89] = 0x0262;
s->csr[94] = 0x0000;
s->csr[100] = 0x0200;
s->csr[103] = 0x0105;
s->csr[103] = 0x0105;
s->csr[112] = 0x0000;
s->csr[114] = 0x0000;
s->csr[122] = 0x0000;
s->csr[124] = 0x0000;
}
static void pcnet_update_irq(PCNetState *s)
{
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]>>1) & s->csr[5]) & 0x0048))
#else
if ((!(s->csr[3] & 0x4000) && !!(s->csr[0] & 0x4000)) /* BABL */ ||
(!(s->csr[3] & 0x1000) && !!(s->csr[0] & 0x1000)) /* MISS */ ||
(!(s->csr[3] & 0x0100) && !!(s->csr[0] & 0x0100)) /* IDON */ ||
(!(s->csr[3] & 0x0200) && !!(s->csr[0] & 0x0200)) /* TINT */ ||
(!(s->csr[3] & 0x0400) && !!(s->csr[0] & 0x0400)) /* RINT */ ||
(!(s->csr[3] & 0x0800) && !!(s->csr[0] & 0x0800)) /* MERR */ ||
(!(s->csr[4] & 0x0001) && !!(s->csr[4] & 0x0002)) /* JAB */ ||
(!(s->csr[4] & 0x0004) && !!(s->csr[4] & 0x0008)) /* TXSTRT */ ||
(!(s->csr[4] & 0x0010) && !!(s->csr[4] & 0x0020)) /* RCVO */ ||
(!(s->csr[4] & 0x0100) && !!(s->csr[4] & 0x0200)) /* MFCO */ ||
(!!(s->csr[5] & 0x0040) && !!(s->csr[5] & 0x0080)) /* EXDINT */ ||
(!!(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;
s->csr[0] |= 0x0080;
isr = 1;
#ifdef PCNET_DEBUG
printf("pcnet user int\n");
#endif
}
#if 1
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 */ )
#endif
{
isr = 1;
s->csr[0] |= 0x0080;
}
if (isr != s->isr) {
#ifdef PCNET_DEBUG
printf("pcnet: INTA=%d\n", isr);
#endif
}
pci_set_irq(&s->dev, 0, isr);
s->isr = isr;
}
static void pcnet_init(PCNetState *s)
{
#ifdef PCNET_DEBUG
printf("pcnet_init init_addr=0x%08x\n", PHYSADDR(s,CSR_IADR(s)));
#endif
#define PCNET_INIT() do { \
cpu_physical_memory_read(PHYSADDR(s,CSR_IADR(s)), \
(uint8_t *)&initblk, sizeof(initblk)); \
s->csr[15] = le16_to_cpu(initblk.mode); \
CSR_RCVRL(s) = (initblk.rlen < 9) ? (1 << initblk.rlen) : 512; \
CSR_XMTRL(s) = (initblk.tlen < 9) ? (1 << initblk.tlen) : 512; \
s->csr[ 6] = (initblk.tlen << 12) | (initblk.rlen << 8); \
s->csr[ 8] = le16_to_cpu(initblk.ladrf1); \
s->csr[ 9] = le16_to_cpu(initblk.ladrf2); \
s->csr[10] = le16_to_cpu(initblk.ladrf3); \
s->csr[11] = le16_to_cpu(initblk.ladrf4); \
s->csr[12] = le16_to_cpu(initblk.padr1); \
s->csr[13] = le16_to_cpu(initblk.padr2); \
s->csr[14] = le16_to_cpu(initblk.padr3); \
s->rdra = PHYSADDR(s,initblk.rdra); \
s->tdra = PHYSADDR(s,initblk.tdra); \
} while (0)
if (BCR_SSIZE32(s)) {
struct pcnet_initblk32 initblk;
PCNET_INIT();
#ifdef PCNET_DEBUG
printf("initblk.rlen=0x%02x, initblk.tlen=0x%02x\n",
initblk.rlen, initblk.tlen);
#endif
} else {
struct pcnet_initblk16 initblk;
PCNET_INIT();
#ifdef PCNET_DEBUG
printf("initblk.rlen=0x%02x, initblk.tlen=0x%02x\n",
initblk.rlen, initblk.tlen);
#endif
}
#undef PCNET_INIT
CSR_RCVRC(s) = CSR_RCVRL(s);
CSR_XMTRC(s) = CSR_XMTRL(s);
#ifdef PCNET_DEBUG
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] &= ~0x0004; /* clear STOP bit */
}
static void pcnet_start(PCNetState *s)
{
#ifdef PCNET_DEBUG
printf("pcnet_start\n");
#endif
if (!CSR_DTX(s))
s->csr[0] |= 0x0010; /* set TXON */
if (!CSR_DRX(s))
s->csr[0] |= 0x0020; /* set RXON */
s->csr[0] &= ~0x0004; /* clear STOP bit */
s->csr[0] |= 0x0002;
}
static void pcnet_stop(PCNetState *s)
{
#ifdef PCNET_DEBUG
printf("pcnet_stop\n");
#endif
s->csr[0] &= ~0x7feb;
s->csr[0] |= 0x0014;
s->csr[4] &= ~0x02c2;
s->csr[5] &= ~0x0011;
pcnet_poll_timer(s);
}
static void pcnet_rdte_poll(PCNetState *s)
{
s->csr[28] = s->csr[29] = 0;
if (s->rdra) {
int bad = 0;
#if 1
target_phys_addr_t crda = pcnet_rdra_addr(s, CSR_RCVRC(s));
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 +
(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 +
(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 +
(CSR_RCVRL(s) - nnrc) *
(BCR_SWSTYLE(s) ? 16 : 8 );
#endif
CHECK_RMD(PHYSADDR(s,crda), bad);
if (!bad) {
CHECK_RMD(PHYSADDR(s,nrda), bad);
if (bad || (nrda == crda)) nrda = 0;
CHECK_RMD(PHYSADDR(s,nnrd), bad);
if (bad || (nnrd == crda)) nnrd = 0;
s->csr[28] = crda & 0xffff;
s->csr[29] = crda >> 16;
s->csr[26] = nrda & 0xffff;
s->csr[27] = nrda >> 16;
s->csr[36] = nnrd & 0xffff;
s->csr[37] = nnrd >> 16;
#ifdef PCNET_DEBUG
if (bad) {
printf("pcnet: BAD RMD RECORDS AFTER 0x%08x\n",
PHYSADDR(s,crda));
}
} else {
printf("pcnet: BAD RMD RDA=0x%08x\n", PHYSADDR(s,crda));
#endif
}
}
if (CSR_CRDA(s)) {
struct pcnet_RMD rmd;
RMDLOAD(&rmd, PHYSADDR(s,CSR_CRDA(s)));
CSR_CRBC(s) = rmd.rmd1.bcnt;
CSR_CRST(s) = ((uint32_t *)&rmd)[1] >> 16;
#ifdef PCNET_DEBUG_RMD_X
printf("CRDA=0x%08x CRST=0x%04x RCVRC=%d RMD1=0x%08x RMD2=0x%08x\n",
PHYSADDR(s,CSR_CRDA(s)), CSR_CRST(s), CSR_RCVRC(s),
((uint32_t *)&rmd)[1], ((uint32_t *)&rmd)[2]);
PRINT_RMD(&rmd);
#endif
} else {
CSR_CRBC(s) = CSR_CRST(s) = 0;
}
if (CSR_NRDA(s)) {
struct pcnet_RMD rmd;
RMDLOAD(&rmd, PHYSADDR(s,CSR_NRDA(s)));
CSR_NRBC(s) = rmd.rmd1.bcnt;
CSR_NRST(s) = ((uint32_t *)&rmd)[1] >> 16;
} else {
CSR_NRBC(s) = CSR_NRST(s) = 0;
}
}
static int pcnet_tdte_poll(PCNetState *s)
{
s->csr[34] = s->csr[35] = 0;
if (s->tdra) {
target_phys_addr_t cxda = s->tdra +
(CSR_XMTRL(s) - CSR_XMTRC(s)) *
(BCR_SWSTYLE(s) ? 16 : 8 );
int bad = 0;
CHECK_TMD(PHYSADDR(s, cxda),bad);
if (!bad) {
if (CSR_CXDA(s) != cxda) {
s->csr[60] = s->csr[34];
s->csr[61] = s->csr[35];
s->csr[62] = CSR_CXBC(s);
s->csr[63] = CSR_CXST(s);
}
s->csr[34] = cxda & 0xffff;
s->csr[35] = cxda >> 16;
#ifdef PCNET_DEBUG
} else {
printf("pcnet: BAD TMD XDA=0x%08x\n", PHYSADDR(s,cxda));
#endif
}
}
if (CSR_CXDA(s)) {
struct pcnet_TMD tmd;
TMDLOAD(&tmd, PHYSADDR(s,CSR_CXDA(s)));
CSR_CXBC(s) = tmd.tmd1.bcnt;
CSR_CXST(s) = ((uint32_t *)&tmd)[1] >> 16;
} else {
CSR_CXBC(s) = CSR_CXST(s) = 0;
}
return !!(CSR_CXST(s) & 0x8000);
}
static int pcnet_can_receive(void *opaque)
{
PCNetState *s = opaque;
if (CSR_STOP(s) || CSR_SPND(s))
return 0;
if (s->recv_pos > 0)
return 0;
return sizeof(s->buffer)-16;
}
#define MIN_BUF_SIZE 60
static void pcnet_receive(void *opaque, const uint8_t *buf, int size)
{
PCNetState *s = opaque;
int is_padr = 0, is_bcast = 0, is_ladr = 0;
uint8_t buf1[60];
if (CSR_DRX(s) || CSR_STOP(s) || CSR_SPND(s) || !size)
return;
#ifdef PCNET_DEBUG
printf("pcnet_receive size=%d\n", size);
#endif
/* if too small buffer, then expand it */
if (size < MIN_BUF_SIZE) {
memcpy(buf1, buf, size);
memset(buf1 + size, 0, MIN_BUF_SIZE - size);
buf = buf1;
size = MIN_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))) {
pcnet_rdte_poll(s);
if (!(CSR_CRST(s) & 0x8000) && s->rdra) {
struct pcnet_RMD rmd;
int rcvrc = CSR_RCVRC(s)-1,i;
target_phys_addr_t nrda;
for (i = CSR_RCVRL(s)-1; i > 0; i--, rcvrc--) {
if (rcvrc <= 1)
rcvrc = CSR_RCVRL(s);
nrda = s->rdra +
(CSR_RCVRL(s) - rcvrc) *
(BCR_SWSTYLE(s) ? 16 : 8 );
RMDLOAD(&rmd, PHYSADDR(s,nrda));
if (rmd.rmd1.own) {
#ifdef PCNET_DEBUG_RMD
printf("pcnet - scan buffer: RCVRC=%d PREV_RCVRC=%d\n",
rcvrc, CSR_RCVRC(s));
#endif
CSR_RCVRC(s) = rcvrc;
pcnet_rdte_poll(s);
break;
}
}
}
if (!(CSR_CRST(s) & 0x8000)) {
#ifdef PCNET_DEBUG_RMD
printf("pcnet - no buffer: RCVRC=%d\n", CSR_RCVRC(s));
#endif
s->csr[0] |= 0x1000; /* Set MISS flag */
CSR_MISSC(s)++;
} else {
uint8_t *src = &s->buffer[8];
target_phys_addr_t crda = CSR_CRDA(s);
struct pcnet_RMD rmd;
int pktcount = 0;
memcpy(src, buf, size);
#if 1
/* no need to compute the CRC */
src[size] = 0;
src[size + 1] = 0;
src[size + 2] = 0;
src[size + 3] = 0;
size += 4;
#else
/* XXX: avoid CRC generation */
if (!CSR_ASTRP_RCV(s)) {
uint32_t fcs = ~0;
uint8_t *p = src;
while (size < 46) {
src[size++] = 0;
}
while (p != &src[size]) {
CRC(fcs, *p++);
}
((uint32_t *)&src[size])[0] = htonl(fcs);
size += 4; /* FCS at end of packet */
} else size += 4;
#endif
#ifdef PCNET_DEBUG_MATCH
PRINT_PKTHDR(buf);
#endif
RMDLOAD(&rmd, PHYSADDR(s,crda));
/*if (!CSR_LAPPEN(s))*/
rmd.rmd1.stp = 1;
#define PCNET_RECV_STORE() do { \
int count = MIN(4096 - rmd.rmd1.bcnt,size); \
target_phys_addr_t rbadr = PHYSADDR(s, rmd.rmd0.rbadr); \
cpu_physical_memory_write(rbadr, src, count); \
src += count; size -= count; \
rmd.rmd2.mcnt = count; rmd.rmd1.own = 0; \
RMDSTORE(&rmd, PHYSADDR(s,crda)); \
pktcount++; \
} while (0)
PCNET_RECV_STORE();
if ((size > 0) && CSR_NRDA(s)) {
target_phys_addr_t nrda = CSR_NRDA(s);
RMDLOAD(&rmd, PHYSADDR(s,nrda));
if (rmd.rmd1.own) {
crda = nrda;
PCNET_RECV_STORE();
if ((size > 0) && (nrda=CSR_NNRD(s))) {
RMDLOAD(&rmd, PHYSADDR(s,nrda));
if (rmd.rmd1.own) {
crda = nrda;
PCNET_RECV_STORE();
}
}
}
}
#undef PCNET_RECV_STORE
RMDLOAD(&rmd, PHYSADDR(s,crda));
if (size == 0) {
rmd.rmd1.enp = 1;
rmd.rmd1.pam = !CSR_PROM(s) && is_padr;
rmd.rmd1.lafm = !CSR_PROM(s) && is_ladr;
rmd.rmd1.bam = !CSR_PROM(s) && is_bcast;
} else {
rmd.rmd1.oflo = 1;
rmd.rmd1.buff = 1;
rmd.rmd1.err = 1;
}
RMDSTORE(&rmd, PHYSADDR(s,crda));
s->csr[0] |= 0x0400;
#ifdef PCNET_DEBUG
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
while (pktcount--) {
if (CSR_RCVRC(s) <= 1)
CSR_RCVRC(s) = CSR_RCVRL(s);
else
CSR_RCVRC(s)--;
}
pcnet_rdte_poll(s);
}
}
pcnet_poll(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;
}
txagain:
if (pcnet_tdte_poll(s)) {
struct pcnet_TMD tmd;
TMDLOAD(&tmd, PHYSADDR(s,CSR_CXDA(s)));
#ifdef PCNET_DEBUG_TMD
printf(" TMDLOAD 0x%08x\n", PHYSADDR(s,CSR_CXDA(s)));
PRINT_TMD(&tmd);
#endif
if (tmd.tmd1.stp) {
s->xmit_pos = 0;
if (!tmd.tmd1.enp) {
cpu_physical_memory_read(PHYSADDR(s, tmd.tmd0.tbadr),
s->buffer, 4096 - tmd.tmd1.bcnt);
s->xmit_pos += 4096 - tmd.tmd1.bcnt;
}
xmit_cxda = PHYSADDR(s,CSR_CXDA(s));
}
if (tmd.tmd1.enp && (s->xmit_pos >= 0)) {
cpu_physical_memory_read(PHYSADDR(s, tmd.tmd0.tbadr),
s->buffer + s->xmit_pos, 4096 - tmd.tmd1.bcnt);
s->xmit_pos += 4096 - tmd.tmd1.bcnt;
#ifdef PCNET_DEBUG
printf("pcnet_transmit size=%d\n", s->xmit_pos);
#endif
if (CSR_LOOP(s))
pcnet_receive(s, s->buffer, s->xmit_pos);
else
qemu_send_packet(s->vc, s->buffer, s->xmit_pos);
s->csr[0] &= ~0x0008; /* clear TDMD */
s->csr[4] |= 0x0004; /* set TXSTRT */
s->xmit_pos = -1;
}
tmd.tmd1.own = 0;
TMDSTORE(&tmd, PHYSADDR(s,CSR_CXDA(s)));
if (!CSR_TOKINTD(s) || (CSR_LTINTEN(s) && tmd.tmd1.ltint))
s->csr[0] |= 0x0200; /* set TINT */
if (CSR_XMTRC(s)<=1)
CSR_XMTRC(s) = CSR_XMTRL(s);
else
CSR_XMTRC(s)--;
if (count--)
goto txagain;
} else
if (s->xmit_pos >= 0) {
struct pcnet_TMD tmd;
TMDLOAD(&tmd, PHYSADDR(s,xmit_cxda));
tmd.tmd2.buff = tmd.tmd2.uflo = tmd.tmd1.err = 1;
tmd.tmd1.own = 0;
TMDSTORE(&tmd, PHYSADDR(s,xmit_cxda));
s->csr[0] |= 0x0200; /* set TINT */
if (!CSR_DXSUFLO(s)) {
s->csr[0] &= ~0x0010;
} else
if (count--)
goto txagain;
}
}
static void pcnet_poll(PCNetState *s)
{
if (CSR_RXON(s)) {
pcnet_rdte_poll(s);
}
if (CSR_TDMD(s) ||
(CSR_TXON(s) && !CSR_DPOLL(s) && pcnet_tdte_poll(s)))
pcnet_transmit(s);
}
static void pcnet_poll_timer(void *opaque)
{
PCNetState *s = opaque;
qemu_del_timer(s->poll_timer);
if (CSR_TDMD(s)) {
pcnet_transmit(s);
}
pcnet_update_irq(s);
if (!CSR_STOP(s) && !CSR_SPND(s) && !CSR_DPOLL(s)) {
uint64_t now = qemu_get_clock(vm_clock) * 33;
if (!s->timer || !now)
s->timer = now;
else {
uint64_t t = now - s->timer + CSR_POLL(s);
if (t > 0xffffLL) {
pcnet_poll(s);
CSR_POLL(s) = CSR_PINT(s);
} else
CSR_POLL(s) = t;
}
qemu_mod_timer(s->poll_timer,
pcnet_get_next_poll_time(s,qemu_get_clock(vm_clock)));
}
}
static void pcnet_csr_writew(PCNetState *s, uint32_t rap, uint32_t new_value)
{
uint16_t val = new_value;
#ifdef PCNET_DEBUG_CSR
printf("pcnet_csr_writew rap=%d val=0x%04x\n", rap, val);
#endif
switch (rap) {
case 0:
s->csr[0] &= ~(val & 0x7f00); /* Clear any interrupt flags */
s->csr[0] = (s->csr[0] & ~0x0040) | (val & 0x0048);
val = (val & 0x007f) | (s->csr[0] & 0x7f00);
/* IFF STOP, STRT and INIT are set, clear STRT and INIT */
if ((val&7) == 7)
val &= ~3;
if (!CSR_STOP(s) && (val & 4))
pcnet_stop(s);
if (!CSR_INIT(s) && (val & 1))
pcnet_init(s);
if (!CSR_STRT(s) && (val & 2))
pcnet_start(s);
if (CSR_TDMD(s))
pcnet_transmit(s);
return;
case 1:
case 2:
case 8:
case 9:
case 10:
case 11:
case 12:
case 13:
case 14:
case 15:
case 18: /* CRBAL */
case 19: /* CRBAU */
case 20: /* CXBAL */
case 21: /* CXBAU */
case 22: /* NRBAU */
case 23: /* NRBAU */
case 24:
case 25:
case 26:
case 27:
case 28:
case 29:
case 30:
case 31:
case 32:
case 33:
case 34:
case 35:
case 36:
case 37:
case 38:
case 39:
case 40: /* CRBC */
case 41:
case 42: /* CXBC */
case 43:
case 44:
case 45:
case 46: /* POLL */
case 47: /* POLLINT */
case 72:
case 74:
case 76: /* RCVRL */
case 78: /* XMTRL */
case 112:
if (CSR_STOP(s) || CSR_SPND(s))
break;
return;
case 3:
break;
case 4:
s->csr[4] &= ~(val & 0x026a);
val &= ~0x026a; val |= s->csr[4] & 0x026a;
break;
case 5:
s->csr[5] &= ~(val & 0x0a90);
val &= ~0x0a90; val |= s->csr[5] & 0x0a90;
break;
case 16:
pcnet_csr_writew(s,1,val);
return;
case 17:
pcnet_csr_writew(s,2,val);
return;
case 58:
pcnet_bcr_writew(s,BCR_SWS,val);
break;
default:
return;
}
s->csr[rap] = val;
}
static uint32_t pcnet_csr_readw(PCNetState *s, uint32_t rap)
{
uint32_t val;
switch (rap) {
case 0:
pcnet_update_irq(s);
val = s->csr[0];
val |= (val & 0x7800) ? 0x8000 : 0;
break;
case 16:
return pcnet_csr_readw(s,1);
case 17:
return pcnet_csr_readw(s,2);
case 58:
return pcnet_bcr_readw(s,BCR_SWS);
case 88:
val = s->csr[89];
val <<= 16;
val |= s->csr[88];
break;
default:
val = s->csr[rap];
}
#ifdef PCNET_DEBUG_CSR
printf("pcnet_csr_readw rap=%d val=0x%04x\n", rap, val);
#endif
return val;
}
static void pcnet_bcr_writew(PCNetState *s, uint32_t rap, uint32_t val)
{
rap &= 127;
#ifdef PCNET_DEBUG_BCR
printf("pcnet_bcr_writew rap=%d val=0x%04x\n", rap, val);
#endif
switch (rap) {
case BCR_SWS:
if (!(CSR_STOP(s) || CSR_SPND(s)))
return;
val &= ~0x0300;
switch (val & 0x00ff) {
case 0:
val |= 0x0200;
break;
case 1:
val |= 0x0100;
break;
case 2:
case 3:
val |= 0x0300;
break;
default:
printf("Bad SWSTYLE=0x%02x\n", val & 0xff);
val = 0x0200;
break;
}
#ifdef PCNET_DEBUG
printf("BCR_SWS=0x%04x\n", val);
#endif
case BCR_LNKST:
case BCR_LED1:
case BCR_LED2:
case BCR_LED3:
case BCR_MC:
case BCR_FDC:
case BCR_BSBC:
case BCR_EECAS:
case BCR_PLAT:
s->bcr[rap] = val;
break;
default:
break;
}
}
static uint32_t pcnet_bcr_readw(PCNetState *s, uint32_t rap)
{
uint32_t val;
rap &= 127;
switch (rap) {
case BCR_LNKST:
case BCR_LED1:
case BCR_LED2:
case BCR_LED3:
val = s->bcr[rap] & ~0x8000;
val |= (val & 0x017f & s->lnkst) ? 0x8000 : 0;
break;
default:
val = rap < 32 ? s->bcr[rap] : 0;
break;
}
#ifdef PCNET_DEBUG_BCR
printf("pcnet_bcr_readw rap=%d val=0x%04x\n", rap, val);
#endif
return val;
}
static void pcnet_h_reset(PCNetState *s)
{
int i;
uint16_t checksum;
/* Initialize the PROM */
memcpy(s->prom, s->nd->macaddr, 6);
s->prom[12] = s->prom[13] = 0x00;
s->prom[14] = s->prom[15] = 0x57;
for (i = 0,checksum = 0; i < 16; i++)
checksum += s->prom[i];
*(uint16_t *)&s->prom[12] = cpu_to_le16(checksum);
s->bcr[BCR_MSRDA] = 0x0005;
s->bcr[BCR_MSWRA] = 0x0005;
s->bcr[BCR_MC ] = 0x0002;
s->bcr[BCR_LNKST] = 0x00c0;
s->bcr[BCR_LED1 ] = 0x0084;
s->bcr[BCR_LED2 ] = 0x0088;
s->bcr[BCR_LED3 ] = 0x0090;
s->bcr[BCR_FDC ] = 0x0000;
s->bcr[BCR_BSBC ] = 0x9001;
s->bcr[BCR_EECAS] = 0x0002;
s->bcr[BCR_SWS ] = 0x0200;
s->bcr[BCR_PLAT ] = 0xff06;
pcnet_s_reset(s);
}
static void pcnet_aprom_writeb(void *opaque, uint32_t addr, uint32_t val)
{
PCNetState *s = opaque;
#ifdef PCNET_DEBUG
printf("pcnet_aprom_writeb addr=0x%08x val=0x%02x\n", addr, val);
#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)
{
PCNetState *s = opaque;
uint32_t val = s->prom[addr &= 15];
#ifdef PCNET_DEBUG
printf("pcnet_aprom_readb addr=0x%08x val=0x%02x\n", addr, val);
#endif
return val;
}
static void pcnet_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
{
PCNetState *s = opaque;
pcnet_poll_timer(s);
#ifdef PCNET_DEBUG_IO
printf("pcnet_ioport_writew addr=0x%08x val=0x%04x\n", addr, val);
#endif
if (!BCR_DWIO(s)) {
switch (addr & 0x0f) {
case 0x00: /* RDP */
pcnet_csr_writew(s, s->rap, val);
break;
case 0x02:
s->rap = val & 0x7f;
break;
case 0x06:
pcnet_bcr_writew(s, s->rap, val);
break;
}
}
pcnet_update_irq(s);
}
static uint32_t pcnet_ioport_readw(void *opaque, uint32_t addr)
{
PCNetState *s = opaque;
uint32_t val = -1;
pcnet_poll_timer(s);
if (!BCR_DWIO(s)) {
switch (addr & 0x0f) {
case 0x00: /* RDP */
val = pcnet_csr_readw(s, s->rap);
break;
case 0x02:
val = s->rap;
break;
case 0x04:
pcnet_s_reset(s);
val = 0;
break;
case 0x06:
val = pcnet_bcr_readw(s, s->rap);
break;
}
}
pcnet_update_irq(s);
#ifdef PCNET_DEBUG_IO
printf("pcnet_ioport_readw addr=0x%08x val=0x%04x\n", addr, val & 0xffff);
#endif
return val;
}
static void pcnet_ioport_writel(void *opaque, uint32_t addr, uint32_t val)
{
PCNetState *s = opaque;
pcnet_poll_timer(s);
#ifdef PCNET_DEBUG_IO
printf("pcnet_ioport_writel addr=0x%08x val=0x%08x\n", addr, val);
#endif
if (BCR_DWIO(s)) {
switch (addr & 0x0f) {
case 0x00: /* RDP */
pcnet_csr_writew(s, s->rap, val & 0xffff);
break;
case 0x04:
s->rap = val & 0x7f;
break;
case 0x0c:
pcnet_bcr_writew(s, s->rap, val & 0xffff);
break;
}
} else
if ((addr & 0x0f) == 0) {
/* switch device to dword i/o mode */
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
}
pcnet_update_irq(s);
}
static uint32_t pcnet_ioport_readl(void *opaque, uint32_t addr)
{
PCNetState *s = opaque;
uint32_t val = -1;
pcnet_poll_timer(s);
if (BCR_DWIO(s)) {
switch (addr & 0x0f) {
case 0x00: /* RDP */
val = pcnet_csr_readw(s, s->rap);
break;
case 0x04:
val = s->rap;
break;
case 0x08:
pcnet_s_reset(s);
val = 0;
break;
case 0x0c:
val = pcnet_bcr_readw(s, s->rap);
break;
}
}
pcnet_update_irq(s);
#ifdef PCNET_DEBUG_IO
printf("pcnet_ioport_readl addr=0x%08x val=0x%08x\n", addr, val);
#endif
return val;
}
static void pcnet_ioport_map(PCIDevice *pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
PCNetState *d = (PCNetState *)pci_dev;
#ifdef PCNET_DEBUG_IO
printf("pcnet_ioport_map addr=0x%04x size=0x%04x\n", addr, size);
#endif
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);
register_ioport_read(addr + 0x10, 0x10, 4, pcnet_ioport_readl, d);
}
static void pcnet_mmio_writeb(void *opaque, target_phys_addr_t addr, uint32_t val)
{
PCNetState *d = opaque;
#ifdef PCNET_DEBUG_IO
printf("pcnet_mmio_writeb addr=0x%08x val=0x%02x\n", addr, val);
#endif
if (!(addr & 0x10))
pcnet_aprom_writeb(d, addr & 0x0f, val);
}
static uint32_t pcnet_mmio_readb(void *opaque, target_phys_addr_t addr)
{
PCNetState *d = opaque;
uint32_t val = -1;
if (!(addr & 0x10))
val = pcnet_aprom_readb(d, addr & 0x0f);
#ifdef PCNET_DEBUG_IO
printf("pcnet_mmio_readb addr=0x%08x val=0x%02x\n", addr, val & 0xff);
#endif
return val;
}
static void pcnet_mmio_writew(void *opaque, target_phys_addr_t addr, uint32_t val)
{
PCNetState *d = opaque;
#ifdef PCNET_DEBUG_IO
printf("pcnet_mmio_writew addr=0x%08x val=0x%04x\n", addr, val);
#endif
if (addr & 0x10)
pcnet_ioport_writew(d, addr & 0x0f, val);
else {
addr &= 0x0f;
pcnet_aprom_writeb(d, addr, val & 0xff);
pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8);
}
}
static uint32_t pcnet_mmio_readw(void *opaque, target_phys_addr_t addr)
{
PCNetState *d = opaque;
uint32_t val = -1;
if (addr & 0x10)
val = pcnet_ioport_readw(d, addr & 0x0f);
else {
addr &= 0x0f;
val = pcnet_aprom_readb(d, addr+1);
val <<= 8;
val |= pcnet_aprom_readb(d, addr);
}
#ifdef PCNET_DEBUG_IO
printf("pcnet_mmio_readw addr=0x%08x val = 0x%04x\n", addr, val & 0xffff);
#endif
return val;
}
static void pcnet_mmio_writel(void *opaque, target_phys_addr_t addr, uint32_t val)
{
PCNetState *d = opaque;
#ifdef PCNET_DEBUG_IO
printf("pcnet_mmio_writel addr=0x%08x val=0x%08x\n", addr, val);
#endif
if (addr & 0x10)
pcnet_ioport_writel(d, addr & 0x0f, val);
else {
addr &= 0x0f;
pcnet_aprom_writeb(d, addr, val & 0xff);
pcnet_aprom_writeb(d, addr+1, (val & 0xff00) >> 8);
pcnet_aprom_writeb(d, addr+2, (val & 0xff0000) >> 16);
pcnet_aprom_writeb(d, addr+3, (val & 0xff000000) >> 24);
}
}
static uint32_t pcnet_mmio_readl(void *opaque, target_phys_addr_t addr)
{
PCNetState *d = opaque;
uint32_t val;
if (addr & 0x10)
val = pcnet_ioport_readl(d, addr & 0x0f);
else {
addr &= 0x0f;
val = pcnet_aprom_readb(d, addr+3);
val <<= 8;
val |= pcnet_aprom_readb(d, addr+2);
val <<= 8;
val |= pcnet_aprom_readb(d, addr+1);
val <<= 8;
val |= pcnet_aprom_readb(d, addr);
}
#ifdef PCNET_DEBUG_IO
printf("pcnet_mmio_readl addr=0x%08x val=0x%08x\n", addr, val);
#endif
return val;
}
static CPUWriteMemoryFunc *pcnet_mmio_write[] = {
(CPUWriteMemoryFunc *)&pcnet_mmio_writeb,
(CPUWriteMemoryFunc *)&pcnet_mmio_writew,
(CPUWriteMemoryFunc *)&pcnet_mmio_writel
};
static CPUReadMemoryFunc *pcnet_mmio_read[] = {
(CPUReadMemoryFunc *)&pcnet_mmio_readb,
(CPUReadMemoryFunc *)&pcnet_mmio_readw,
(CPUReadMemoryFunc *)&pcnet_mmio_readl
};
static void pcnet_mmio_map(PCIDevice *pci_dev, int region_num,
uint32_t addr, uint32_t size, int type)
{
PCNetState *d = (PCNetState *)pci_dev;
#ifdef PCNET_DEBUG_IO
printf("pcnet_ioport_map addr=0x%08x 0x%08x\n", addr, size);
#endif
cpu_register_physical_memory(addr, PCNET_PNPMMIO_SIZE, d->mmio_io_addr);
}
void pci_pcnet_init(PCIBus *bus, NICInfo *nd)
{
PCNetState *d;
uint8_t *pci_conf;
#if 0
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),
-1, 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[0x06] = cpu_to_le16(0x0280);
pci_conf[0x08] = 0x10;
pci_conf[0x09] = 0x00;
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;
/* Handler for memory-mapped I/O */
d->mmio_io_addr =
cpu_register_io_memory(0, pcnet_mmio_read, pcnet_mmio_write, d);
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_ADDRESS_SPACE_MEM, pcnet_mmio_map);
d->poll_timer = qemu_new_timer(vm_clock, pcnet_poll_timer, d);
d->nd = nd;
d->vc = qemu_new_vlan_client(nd->vlan, pcnet_receive,
pcnet_can_receive, d);
snprintf(d->vc->info_str, sizeof(d->vc->info_str),
"pcnet macaddr=%02x:%02x:%02x:%02x:%02x:%02x",
d->nd->macaddr[0],
d->nd->macaddr[1],
d->nd->macaddr[2],
d->nd->macaddr[3],
d->nd->macaddr[4],
d->nd->macaddr[5]);
pcnet_h_reset(d);
}
