diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/pci.c | 2 | ||||
| -rw-r--r-- | hw/pcnet.c | 1771 |
2 files changed, 1773 insertions, 0 deletions
@@ -493,6 +493,8 @@ void pci_nic_init(PCIBus *bus, NICInfo *nd) pci_ne2000_init(bus, nd); } else if (strcmp(nd->model, "rtl8139") == 0) { pci_rtl8139_init(bus, nd); + } else if (strcmp(nd->model, "pcnet") == 0) { + pci_pcnet_init(bus, nd); } else { fprintf(stderr, "qemu: Unsupported NIC: %s\n", nd->model); exit (1); diff --git a/hw/pcnet.c b/hw/pcnet.c new file mode 100644 index 0000000000..1200581628 --- /dev/null +++ b/hw/pcnet.c @@ -0,0 +1,1771 @@ +/* + * 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" + +/* XXX: suppress those headers */ +#include <sys/times.h> +#include <arpa/inet.h> +#include <net/ethernet.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 + +/* 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 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], \ + htons(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 < ETHER_ADDR_LEN; 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 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 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 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); + + /* XXX: avoid CRC generation */ + if (!CSR_ASTRP_RCV(s)) { + uint32_t fcs = ~0; +#if 0 + uint8_t *p = s->buffer; + + ((uint32_t *)p)[0] = ((uint32_t *)p)[1] = 0xaaaaaaaa; + p[7] = 0xab; +#else + uint8_t *p = src; +#endif + + 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; + +#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); +} |