diff options
Diffstat (limited to 'hw/pcnet.c')
| -rw-r--r-- | hw/pcnet.c | 1768 |
1 files changed, 0 insertions, 1768 deletions
diff --git a/hw/pcnet.c b/hw/pcnet.c deleted file mode 100644 index b0b462b02e..0000000000 --- a/hw/pcnet.c +++ /dev/null @@ -1,1768 +0,0 @@ -/* - * 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 - */ - -/* - * On Sparc32, this is the Lance (Am7990) part of chip STP2000 (Master I/O), also - * produced as NCR89C100. See - * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR89C100.txt - * and - * http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR92C990.txt - */ - -#include "hw/qdev.h" -#include "net/net.h" -#include "qemu/timer.h" -#include "qemu/sockets.h" -#include "sysemu/sysemu.h" - -#include "hw/pcnet.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 - - -struct qemu_ether_header { - uint8_t ether_dhost[6]; - uint8_t ether_shost[6]; - uint16_t ether_type; -}; - -#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_BSWP(S) !!(((S)->csr[3])&0x0004) -#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_DXMTFCS(S) !!(((S)->csr[15])&0x0008) -#define CSR_INTL(S) !!(((S)->csr[15])&0x0040) -#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] | ((uint32_t)(S)->csr[ 2] << 16)) -#define CSR_CRBA(S) ((S)->csr[18] | ((uint32_t)(S)->csr[19] << 16)) -#define CSR_CXBA(S) ((S)->csr[20] | ((uint32_t)(S)->csr[21] << 16)) -#define CSR_NRBA(S) ((S)->csr[22] | ((uint32_t)(S)->csr[23] << 16)) -#define CSR_BADR(S) ((S)->csr[24] | ((uint32_t)(S)->csr[25] << 16)) -#define CSR_NRDA(S) ((S)->csr[26] | ((uint32_t)(S)->csr[27] << 16)) -#define CSR_CRDA(S) ((S)->csr[28] | ((uint32_t)(S)->csr[29] << 16)) -#define CSR_BADX(S) ((S)->csr[30] | ((uint32_t)(S)->csr[31] << 16)) -#define CSR_NXDA(S) ((S)->csr[32] | ((uint32_t)(S)->csr[33] << 16)) -#define CSR_CXDA(S) ((S)->csr[34] | ((uint32_t)(S)->csr[35] << 16)) -#define CSR_NNRD(S) ((S)->csr[36] | ((uint32_t)(S)->csr[37] << 16)) -#define CSR_NNXD(S) ((S)->csr[38] | ((uint32_t)(S)->csr[39] << 16)) -#define CSR_PXDA(S) ((S)->csr[60] | ((uint32_t)(S)->csr[61] << 16)) -#define CSR_NXBA(S) ((S)->csr[64] | ((uint32_t)(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 padr[3]; - uint16_t ladrf[4]; - uint32_t rdra; - uint32_t tdra; -}; - -struct pcnet_initblk32 { - uint16_t mode; - uint8_t rlen; - uint8_t tlen; - uint16_t padr[3]; - uint16_t _res; - uint16_t ladrf[4]; - uint32_t rdra; - uint32_t tdra; -}; - -struct pcnet_TMD { - uint32_t tbadr; - int16_t length; - int16_t status; - uint32_t misc; - uint32_t res; -}; - -#define TMDL_BCNT_MASK 0x0fff -#define TMDL_BCNT_SH 0 -#define TMDL_ONES_MASK 0xf000 -#define TMDL_ONES_SH 12 - -#define TMDS_BPE_MASK 0x0080 -#define TMDS_BPE_SH 7 -#define TMDS_ENP_MASK 0x0100 -#define TMDS_ENP_SH 8 -#define TMDS_STP_MASK 0x0200 -#define TMDS_STP_SH 9 -#define TMDS_DEF_MASK 0x0400 -#define TMDS_DEF_SH 10 -#define TMDS_ONE_MASK 0x0800 -#define TMDS_ONE_SH 11 -#define TMDS_LTINT_MASK 0x1000 -#define TMDS_LTINT_SH 12 -#define TMDS_NOFCS_MASK 0x2000 -#define TMDS_NOFCS_SH 13 -#define TMDS_ADDFCS_MASK TMDS_NOFCS_MASK -#define TMDS_ADDFCS_SH TMDS_NOFCS_SH -#define TMDS_ERR_MASK 0x4000 -#define TMDS_ERR_SH 14 -#define TMDS_OWN_MASK 0x8000 -#define TMDS_OWN_SH 15 - -#define TMDM_TRC_MASK 0x0000000f -#define TMDM_TRC_SH 0 -#define TMDM_TDR_MASK 0x03ff0000 -#define TMDM_TDR_SH 16 -#define TMDM_RTRY_MASK 0x04000000 -#define TMDM_RTRY_SH 26 -#define TMDM_LCAR_MASK 0x08000000 -#define TMDM_LCAR_SH 27 -#define TMDM_LCOL_MASK 0x10000000 -#define TMDM_LCOL_SH 28 -#define TMDM_EXDEF_MASK 0x20000000 -#define TMDM_EXDEF_SH 29 -#define TMDM_UFLO_MASK 0x40000000 -#define TMDM_UFLO_SH 30 -#define TMDM_BUFF_MASK 0x80000000 -#define TMDM_BUFF_SH 31 - -struct pcnet_RMD { - uint32_t rbadr; - int16_t buf_length; - int16_t status; - uint32_t msg_length; - uint32_t res; -}; - -#define RMDL_BCNT_MASK 0x0fff -#define RMDL_BCNT_SH 0 -#define RMDL_ONES_MASK 0xf000 -#define RMDL_ONES_SH 12 - -#define RMDS_BAM_MASK 0x0010 -#define RMDS_BAM_SH 4 -#define RMDS_LFAM_MASK 0x0020 -#define RMDS_LFAM_SH 5 -#define RMDS_PAM_MASK 0x0040 -#define RMDS_PAM_SH 6 -#define RMDS_BPE_MASK 0x0080 -#define RMDS_BPE_SH 7 -#define RMDS_ENP_MASK 0x0100 -#define RMDS_ENP_SH 8 -#define RMDS_STP_MASK 0x0200 -#define RMDS_STP_SH 9 -#define RMDS_BUFF_MASK 0x0400 -#define RMDS_BUFF_SH 10 -#define RMDS_CRC_MASK 0x0800 -#define RMDS_CRC_SH 11 -#define RMDS_OFLO_MASK 0x1000 -#define RMDS_OFLO_SH 12 -#define RMDS_FRAM_MASK 0x2000 -#define RMDS_FRAM_SH 13 -#define RMDS_ERR_MASK 0x4000 -#define RMDS_ERR_SH 14 -#define RMDS_OWN_MASK 0x8000 -#define RMDS_OWN_SH 15 - -#define RMDM_MCNT_MASK 0x00000fff -#define RMDM_MCNT_SH 0 -#define RMDM_ZEROS_MASK 0x0000f000 -#define RMDM_ZEROS_SH 12 -#define RMDM_RPC_MASK 0x00ff0000 -#define RMDM_RPC_SH 16 -#define RMDM_RCC_MASK 0xff000000 -#define RMDM_RCC_SH 24 - -#define SET_FIELD(regp, name, field, value) \ - (*(regp) = (*(regp) & ~(name ## _ ## field ## _MASK)) \ - | ((value) << name ## _ ## field ## _SH)) - -#define GET_FIELD(reg, name, field) \ - (((reg) & name ## _ ## field ## _MASK) >> name ## _ ## field ## _SH) - -#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)->tbadr, \ - GET_FIELD((T)->status, TMDS, OWN), \ - GET_FIELD((T)->status, TMDS, ERR), \ - GET_FIELD((T)->status, TMDS, NOFCS), \ - GET_FIELD((T)->status, TMDS, LTINT), \ - GET_FIELD((T)->status, TMDS, ONE), \ - GET_FIELD((T)->status, TMDS, DEF), \ - GET_FIELD((T)->status, TMDS, STP), \ - GET_FIELD((T)->status, TMDS, ENP), \ - GET_FIELD((T)->status, TMDS, BPE), \ - 4096-GET_FIELD((T)->length, TMDL, BCNT), \ - GET_FIELD((T)->misc, TMDM, BUFF), \ - GET_FIELD((T)->misc, TMDM, UFLO), \ - GET_FIELD((T)->misc, TMDM, EXDEF), \ - GET_FIELD((T)->misc, TMDM, LCOL), \ - GET_FIELD((T)->misc, TMDM, LCAR), \ - GET_FIELD((T)->misc, TMDM, RTRY), \ - GET_FIELD((T)->misc, TMDM, TDR), \ - GET_FIELD((T)->misc, TMDM, 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)->rbadr, \ - GET_FIELD((R)->status, RMDS, OWN), \ - GET_FIELD((R)->status, RMDS, ERR), \ - GET_FIELD((R)->status, RMDS, FRAM), \ - GET_FIELD((R)->status, RMDS, OFLO), \ - GET_FIELD((R)->status, RMDS, CRC), \ - GET_FIELD((R)->status, RMDS, BUFF), \ - GET_FIELD((R)->status, RMDS, STP), \ - GET_FIELD((R)->status, RMDS, ENP), \ - GET_FIELD((R)->status, RMDS, BPE), \ - GET_FIELD((R)->status, RMDS, PAM), \ - GET_FIELD((R)->status, RMDS, LFAM), \ - GET_FIELD((R)->status, RMDS, BAM), \ - GET_FIELD((R)->buf_length, RMDL, ONES), \ - 4096-GET_FIELD((R)->buf_length, RMDL, BCNT), \ - GET_FIELD((R)->msg_length, RMDM, RCC), \ - GET_FIELD((R)->msg_length, RMDM, RPC), \ - GET_FIELD((R)->msg_length, RMDM, MCNT), \ - GET_FIELD((R)->msg_length, RMDM, ZEROS)) - -static inline void pcnet_tmd_load(PCNetState *s, struct pcnet_TMD *tmd, - hwaddr addr) -{ - if (!BCR_SSIZE32(s)) { - struct { - uint32_t tbadr; - int16_t length; - int16_t status; - } xda; - s->phys_mem_read(s->dma_opaque, addr, (void *)&xda, sizeof(xda), 0); - tmd->tbadr = le32_to_cpu(xda.tbadr) & 0xffffff; - tmd->length = le16_to_cpu(xda.length); - tmd->status = (le32_to_cpu(xda.tbadr) >> 16) & 0xff00; - tmd->misc = le16_to_cpu(xda.status) << 16; - tmd->res = 0; - } else { - s->phys_mem_read(s->dma_opaque, addr, (void *)tmd, sizeof(*tmd), 0); - le32_to_cpus(&tmd->tbadr); - le16_to_cpus((uint16_t *)&tmd->length); - le16_to_cpus((uint16_t *)&tmd->status); - le32_to_cpus(&tmd->misc); - le32_to_cpus(&tmd->res); - if (BCR_SWSTYLE(s) == 3) { - uint32_t tmp = tmd->tbadr; - tmd->tbadr = tmd->misc; - tmd->misc = tmp; - } - } -} - -static inline void pcnet_tmd_store(PCNetState *s, const struct pcnet_TMD *tmd, - hwaddr addr) -{ - if (!BCR_SSIZE32(s)) { - struct { - uint32_t tbadr; - int16_t length; - int16_t status; - } xda; - xda.tbadr = cpu_to_le32((tmd->tbadr & 0xffffff) | - ((tmd->status & 0xff00) << 16)); - xda.length = cpu_to_le16(tmd->length); - xda.status = cpu_to_le16(tmd->misc >> 16); - s->phys_mem_write(s->dma_opaque, addr, (void *)&xda, sizeof(xda), 0); - } else { - struct { - uint32_t tbadr; - int16_t length; - int16_t status; - uint32_t misc; - uint32_t res; - } xda; - xda.tbadr = cpu_to_le32(tmd->tbadr); - xda.length = cpu_to_le16(tmd->length); - xda.status = cpu_to_le16(tmd->status); - xda.misc = cpu_to_le32(tmd->misc); - xda.res = cpu_to_le32(tmd->res); - if (BCR_SWSTYLE(s) == 3) { - uint32_t tmp = xda.tbadr; - xda.tbadr = xda.misc; - xda.misc = tmp; - } - s->phys_mem_write(s->dma_opaque, addr, (void *)&xda, sizeof(xda), 0); - } -} - -static inline void pcnet_rmd_load(PCNetState *s, struct pcnet_RMD *rmd, - hwaddr addr) -{ - if (!BCR_SSIZE32(s)) { - struct { - uint32_t rbadr; - int16_t buf_length; - int16_t msg_length; - } rda; - s->phys_mem_read(s->dma_opaque, addr, (void *)&rda, sizeof(rda), 0); - rmd->rbadr = le32_to_cpu(rda.rbadr) & 0xffffff; - rmd->buf_length = le16_to_cpu(rda.buf_length); - rmd->status = (le32_to_cpu(rda.rbadr) >> 16) & 0xff00; - rmd->msg_length = le16_to_cpu(rda.msg_length); - rmd->res = 0; - } else { - s->phys_mem_read(s->dma_opaque, addr, (void *)rmd, sizeof(*rmd), 0); - le32_to_cpus(&rmd->rbadr); - le16_to_cpus((uint16_t *)&rmd->buf_length); - le16_to_cpus((uint16_t *)&rmd->status); - le32_to_cpus(&rmd->msg_length); - le32_to_cpus(&rmd->res); - if (BCR_SWSTYLE(s) == 3) { - uint32_t tmp = rmd->rbadr; - rmd->rbadr = rmd->msg_length; - rmd->msg_length = tmp; - } - } -} - -static inline void pcnet_rmd_store(PCNetState *s, struct pcnet_RMD *rmd, - hwaddr addr) -{ - if (!BCR_SSIZE32(s)) { - struct { - uint32_t rbadr; - int16_t buf_length; - int16_t msg_length; - } rda; - rda.rbadr = cpu_to_le32((rmd->rbadr & 0xffffff) | - ((rmd->status & 0xff00) << 16)); - rda.buf_length = cpu_to_le16(rmd->buf_length); - rda.msg_length = cpu_to_le16(rmd->msg_length); - s->phys_mem_write(s->dma_opaque, addr, (void *)&rda, sizeof(rda), 0); - } else { - struct { - uint32_t rbadr; - int16_t buf_length; - int16_t status; - uint32_t msg_length; - uint32_t res; - } rda; - rda.rbadr = cpu_to_le32(rmd->rbadr); - rda.buf_length = cpu_to_le16(rmd->buf_length); - rda.status = cpu_to_le16(rmd->status); - rda.msg_length = cpu_to_le32(rmd->msg_length); - rda.res = cpu_to_le32(rmd->res); - if (BCR_SWSTYLE(s) == 3) { - uint32_t tmp = rda.rbadr; - rda.rbadr = rda.msg_length; - rda.msg_length = tmp; - } - s->phys_mem_write(s->dma_opaque, addr, (void *)&rda, sizeof(rda), 0); - } -} - - -#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) |= (GET_FIELD(rmd.buf_length, RMDL, ONES) != 15) \ - || (GET_FIELD(rmd.msg_length, RMDM, ZEROS) != 0); \ -} while (0) - -#define CHECK_TMD(ADDR,RES) do { \ - struct pcnet_TMD tmd; \ - TMDLOAD(&tmd,(ADDR)); \ - (RES) |= (GET_FIELD(tmd.length, TMDL, ONES) != 15); \ -} while (0) - -#else - -#define CHECK_RMD(ADDR,RES) do { \ - switch (BCR_SWSTYLE(s)) { \ - case 0x00: \ - do { \ - uint16_t rda[4]; \ - s->phys_mem_read(s->dma_opaque, (ADDR), \ - (void *)&rda[0], sizeof(rda), 0); \ - (RES) |= (rda[2] & 0xf000)!=0xf000; \ - (RES) |= (rda[3] & 0xf000)!=0x0000; \ - } while (0); \ - break; \ - case 0x01: \ - case 0x02: \ - do { \ - uint32_t rda[4]; \ - s->phys_mem_read(s->dma_opaque, (ADDR), \ - (void *)&rda[0], sizeof(rda), 0); \ - (RES) |= (rda[1] & 0x0000f000L)!=0x0000f000L; \ - (RES) |= (rda[2] & 0x0000f000L)!=0x00000000L; \ - } while (0); \ - break; \ - case 0x03: \ - do { \ - uint32_t rda[4]; \ - s->phys_mem_read(s->dma_opaque, (ADDR), \ - (void *)&rda[0], sizeof(rda), 0); \ - (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]; \ - s->phys_mem_read(s->dma_opaque, (ADDR), \ - (void *)&xda[0], sizeof(xda), 0); \ - (RES) |= (xda[2] & 0xf000)!=0xf000; \ - } while (0); \ - break; \ - case 0x01: \ - case 0x02: \ - case 0x03: \ - do { \ - uint32_t xda[4]; \ - s->phys_mem_read(s->dma_opaque, (ADDR), \ - (void *)&xda[0], sizeof(xda), 0); \ - (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\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)); \ -} 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)) && !memcmp(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 const uint8_t BCAST[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; - struct qemu_ether_header *hdr = (void *)buf; - int result = !CSR_DRCVBC(s) && !memcmp(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 hwaddr 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)), - get_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 void pcnet_s_reset(PCNetState *s) -{ -#ifdef PCNET_DEBUG - printf("pcnet_s_reset\n"); -#endif - - 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; - - s->tx_busy = 0; -} - -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 - } - qemu_set_irq(s->irq, isr); - s->isr = isr; -} - -static void pcnet_init(PCNetState *s) -{ - int rlen, tlen; - uint16_t padr[3], ladrf[4], mode; - uint32_t rdra, tdra; - -#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)), - (uint8_t *)&initblk, sizeof(initblk), 0); - mode = le16_to_cpu(initblk.mode); - rlen = initblk.rlen >> 4; - tlen = initblk.tlen >> 4; - ladrf[0] = le16_to_cpu(initblk.ladrf[0]); - ladrf[1] = le16_to_cpu(initblk.ladrf[1]); - ladrf[2] = le16_to_cpu(initblk.ladrf[2]); - ladrf[3] = le16_to_cpu(initblk.ladrf[3]); - padr[0] = le16_to_cpu(initblk.padr[0]); - padr[1] = le16_to_cpu(initblk.padr[1]); - padr[2] = le16_to_cpu(initblk.padr[2]); - rdra = le32_to_cpu(initblk.rdra); - tdra = le32_to_cpu(initblk.tdra); - } else { - struct pcnet_initblk16 initblk; - s->phys_mem_read(s->dma_opaque, PHYSADDR(s,CSR_IADR(s)), - (uint8_t *)&initblk, sizeof(initblk), 0); - mode = le16_to_cpu(initblk.mode); - ladrf[0] = le16_to_cpu(initblk.ladrf[0]); - ladrf[1] = le16_to_cpu(initblk.ladrf[1]); - ladrf[2] = le16_to_cpu(initblk.ladrf[2]); - ladrf[3] = le16_to_cpu(initblk.ladrf[3]); - padr[0] = le16_to_cpu(initblk.padr[0]); - padr[1] = le16_to_cpu(initblk.padr[1]); - padr[2] = le16_to_cpu(initblk.padr[2]); - rdra = le32_to_cpu(initblk.rdra); - tdra = le32_to_cpu(initblk.tdra); - rlen = rdra >> 29; - tlen = tdra >> 29; - rdra &= 0x00ffffff; - tdra &= 0x00ffffff; - } - -#if defined(PCNET_DEBUG) - printf("rlen=%d tlen=%d\n", rlen, tlen); -#endif - - CSR_RCVRL(s) = (rlen < 9) ? (1 << rlen) : 512; - CSR_XMTRL(s) = (tlen < 9) ? (1 << tlen) : 512; - s->csr[ 6] = (tlen << 12) | (rlen << 8); - s->csr[15] = mode; - s->csr[ 8] = ladrf[0]; - s->csr[ 9] = ladrf[1]; - s->csr[10] = ladrf[2]; - s->csr[11] = ladrf[3]; - s->csr[12] = padr[0]; - s->csr[13] = padr[1]; - s->csr[14] = padr[2]; - s->rdra = PHYSADDR(s, rdra); - s->tdra = PHYSADDR(s, tdra); - - 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; - pcnet_poll_timer(s); -} - -static void pcnet_stop(PCNetState *s) -{ -#ifdef PCNET_DEBUG - printf("pcnet_stop\n"); -#endif - s->csr[0] &= ~0xffeb; - 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 - hwaddr crda = pcnet_rdra_addr(s, CSR_RCVRC(s)); - hwaddr nrda = pcnet_rdra_addr(s, -1 + CSR_RCVRC(s)); - hwaddr nnrd = pcnet_rdra_addr(s, -2 + CSR_RCVRC(s)); -#else - hwaddr 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; - hwaddr nrda = s->rdra + - (CSR_RCVRL(s) - nrdc) * - (BCR_SWSTYLE(s) ? 16 : 8 ); - int nnrc = nrdc<=1 ? CSR_RCVRL(s) : nrdc-1; - hwaddr nnrd = s->rdra + - (CSR_RCVRL(s) - nnrc) * - (BCR_SWSTYLE(s) ? 16 : 8 ); -#endif - - CHECK_RMD(crda, bad); - if (!bad) { - CHECK_RMD(nrda, bad); - if (bad || (nrda == crda)) nrda = 0; - CHECK_RMD(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" TARGET_FMT_plx "\n", - crda); - } - } else { - printf("pcnet: BAD RMD RDA=0x" TARGET_FMT_plx "\n", - crda); -#endif - } - } - - if (CSR_CRDA(s)) { - struct pcnet_RMD rmd; - RMDLOAD(&rmd, PHYSADDR(s,CSR_CRDA(s))); - CSR_CRBC(s) = GET_FIELD(rmd.buf_length, RMDL, BCNT); - CSR_CRST(s) = rmd.status; -#ifdef PCNET_DEBUG_RMD_X - printf("CRDA=0x%08x CRST=0x%04x RCVRC=%d RMDL=0x%04x RMDS=0x%04x RMDM=0x%08x\n", - PHYSADDR(s,CSR_CRDA(s)), CSR_CRST(s), CSR_RCVRC(s), - rmd.buf_length, rmd.status, rmd.msg_length); - 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) = GET_FIELD(rmd.buf_length, RMDL, BCNT); - CSR_NRST(s) = rmd.status; - } 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) { - hwaddr cxda = s->tdra + - (CSR_XMTRL(s) - CSR_XMTRC(s)) * - (BCR_SWSTYLE(s) ? 16 : 8); - int bad = 0; - CHECK_TMD(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_X - printf("pcnet: BAD TMD XDA=0x%08x\n", cxda); -#endif - } - } - - if (CSR_CXDA(s)) { - struct pcnet_TMD tmd; - - 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); -} - -int pcnet_can_receive(NetClientState *nc) -{ - PCNetState *s = qemu_get_nic_opaque(nc); - if (CSR_STOP(s) || CSR_SPND(s)) - return 0; - - return sizeof(s->buffer)-16; -} - -#define MIN_BUF_SIZE 60 - -ssize_t pcnet_receive(NetClientState *nc, const uint8_t *buf, size_t size_) -{ - PCNetState *s = qemu_get_nic_opaque(nc); - int is_padr = 0, is_bcast = 0, is_ladr = 0; - uint8_t buf1[60]; - int remaining; - int crc_err = 0; - int size = size_; - - if (CSR_DRX(s) || CSR_STOP(s) || CSR_SPND(s) || !size || - (CSR_LOOP(s) && !s->looptest)) { - return -1; - } -#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; - hwaddr 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, nrda); - if (GET_FIELD(rmd.status, RMDS, 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; - hwaddr crda = CSR_CRDA(s); - struct pcnet_RMD rmd; - int pktcount = 0; - - if (!s->looptest) { - memcpy(src, buf, size); - /* no need to compute the CRC */ - src[size] = 0; - src[size + 1] = 0; - src[size + 2] = 0; - src[size + 3] = 0; - size += 4; - } else if (s->looptest == PCNET_LOOPTEST_CRC || - !CSR_DXMTFCS(s) || size < MIN_BUF_SIZE+4) { - uint32_t fcs = ~0; - uint8_t *p = src; - - while (p != &src[size]) - CRC(fcs, *p++); - *(uint32_t *)p = htonl(fcs); - size += 4; - } else { - uint32_t fcs = ~0; - uint8_t *p = src; - - while (p != &src[size-4]) - CRC(fcs, *p++); - crc_err = (*(uint32_t *)p != htonl(fcs)); - } - -#ifdef PCNET_DEBUG_MATCH - PRINT_PKTHDR(buf); -#endif - - RMDLOAD(&rmd, PHYSADDR(s,crda)); - /*if (!CSR_LAPPEN(s))*/ - SET_FIELD(&rmd.status, RMDS, STP, 1); - -#define PCNET_RECV_STORE() do { \ - int count = MIN(4096 - GET_FIELD(rmd.buf_length, RMDL, BCNT),remaining); \ - hwaddr rbadr = PHYSADDR(s, rmd.rbadr); \ - s->phys_mem_write(s->dma_opaque, rbadr, src, count, CSR_BSWP(s)); \ - src += count; remaining -= count; \ - SET_FIELD(&rmd.status, RMDS, OWN, 0); \ - RMDSTORE(&rmd, PHYSADDR(s,crda)); \ - pktcount++; \ -} while (0) - - remaining = size; - PCNET_RECV_STORE(); - if ((remaining > 0) && CSR_NRDA(s)) { - hwaddr nrda = CSR_NRDA(s); -#ifdef PCNET_DEBUG_RMD - PRINT_RMD(&rmd); -#endif - RMDLOAD(&rmd, PHYSADDR(s,nrda)); - if (GET_FIELD(rmd.status, RMDS, OWN)) { - crda = nrda; - PCNET_RECV_STORE(); -#ifdef PCNET_DEBUG_RMD - PRINT_RMD(&rmd); -#endif - if ((remaining > 0) && (nrda=CSR_NNRD(s))) { - RMDLOAD(&rmd, PHYSADDR(s,nrda)); - if (GET_FIELD(rmd.status, RMDS, OWN)) { - crda = nrda; - PCNET_RECV_STORE(); - } - } - } - } - -#undef PCNET_RECV_STORE - - RMDLOAD(&rmd, PHYSADDR(s,crda)); - if (remaining == 0) { - SET_FIELD(&rmd.msg_length, RMDM, MCNT, size); - SET_FIELD(&rmd.status, RMDS, ENP, 1); - SET_FIELD(&rmd.status, RMDS, PAM, !CSR_PROM(s) && is_padr); - SET_FIELD(&rmd.status, RMDS, LFAM, !CSR_PROM(s) && is_ladr); - SET_FIELD(&rmd.status, RMDS, BAM, !CSR_PROM(s) && is_bcast); - if (crc_err) { - SET_FIELD(&rmd.status, RMDS, CRC, 1); - SET_FIELD(&rmd.status, RMDS, ERR, 1); - } - } else { - SET_FIELD(&rmd.status, RMDS, OFLO, 1); - SET_FIELD(&rmd.status, RMDS, BUFF, 1); - SET_FIELD(&rmd.status, RMDS, 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); - - return size_; -} - -void pcnet_set_link_status(NetClientState *nc) -{ - PCNetState *d = qemu_get_nic_opaque(nc); - - d->lnkst = nc->link_down ? 0 : 0x40; -} - -static void pcnet_transmit(PCNetState *s) -{ - hwaddr xmit_cxda = 0; - int count = CSR_XMTRL(s)-1; - int add_crc = 0; - - s->xmit_pos = -1; - - if (!CSR_TXON(s)) { - s->csr[0] &= ~0x0008; - return; - } - - s->tx_busy = 1; - - 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 (GET_FIELD(tmd.status, TMDS, STP)) { - s->xmit_pos = 0; - xmit_cxda = PHYSADDR(s,CSR_CXDA(s)); - if (BCR_SWSTYLE(s) != 1) - add_crc = GET_FIELD(tmd.status, TMDS, ADDFCS); - } - if (s->lnkst == 0 && - (!CSR_LOOP(s) || (!CSR_INTL(s) && !BCR_TMAULOOP(s)))) { - SET_FIELD(&tmd.misc, TMDM, LCAR, 1); - SET_FIELD(&tmd.status, TMDS, ERR, 1); - SET_FIELD(&tmd.status, TMDS, OWN, 0); - s->csr[0] |= 0xa000; /* ERR | CERR */ - s->xmit_pos = -1; - goto txdone; - } - if (!GET_FIELD(tmd.status, TMDS, ENP)) { - int bcnt = 4096 - GET_FIELD(tmd.length, TMDL, BCNT); - s->phys_mem_read(s->dma_opaque, PHYSADDR(s, tmd.tbadr), - s->buffer + s->xmit_pos, bcnt, CSR_BSWP(s)); - s->xmit_pos += bcnt; - } else if (s->xmit_pos >= 0) { - int bcnt = 4096 - GET_FIELD(tmd.length, TMDL, BCNT); - s->phys_mem_read(s->dma_opaque, PHYSADDR(s, tmd.tbadr), - s->buffer + s->xmit_pos, bcnt, CSR_BSWP(s)); - s->xmit_pos += bcnt; -#ifdef PCNET_DEBUG - printf("pcnet_transmit size=%d\n", s->xmit_pos); -#endif - if (CSR_LOOP(s)) { - if (BCR_SWSTYLE(s) == 1) - add_crc = !GET_FIELD(tmd.status, TMDS, NOFCS); - s->looptest = add_crc ? PCNET_LOOPTEST_CRC : PCNET_LOOPTEST_NOCRC; - pcnet_receive(qemu_get_queue(s->nic), s->buffer, s->xmit_pos); - s->looptest = 0; - } else - if (s->nic) - qemu_send_packet(qemu_get_queue(s->nic), s->buffer, - s->xmit_pos); - - s->csr[0] &= ~0x0008; /* clear TDMD */ - s->csr[4] |= 0x0004; /* set TXSTRT */ - s->xmit_pos = -1; - } - - txdone: - SET_FIELD(&tmd.status, TMDS, OWN, 0); - TMDSTORE(&tmd, PHYSADDR(s,CSR_CXDA(s))); - if (!CSR_TOKINTD(s) || (CSR_LTINTEN(s) && GET_FIELD(tmd.status, TMDS, 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, xmit_cxda); - SET_FIELD(&tmd.misc, TMDM, BUFF, 1); - SET_FIELD(&tmd.misc, TMDM, UFLO, 1); - SET_FIELD(&tmd.status, TMDS, ERR, 1); - SET_FIELD(&tmd.status, TMDS, OWN, 0); - TMDSTORE(&tmd, xmit_cxda); - s->csr[0] |= 0x0200; /* set TINT */ - if (!CSR_DXSUFLO(s)) { - s->csr[0] &= ~0x0010; - } else - if (count--) - goto txagain; - } - - s->tx_busy = 0; -} - -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))) - { - /* prevent recursion */ - if (s->tx_busy) - return; - - 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_ns(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_ns(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 - /* fall through */ - 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; - } -} - -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; -} - -void pcnet_h_reset(void *opaque) -{ - PCNetState *s = opaque; - - 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); - pcnet_update_irq(s); - pcnet_poll_timer(s); -} - -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); -} - -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; -} - -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); -} - -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 bool is_version_2(void *opaque, int version_id) -{ - return version_id == 2; -} - -const VMStateDescription vmstate_pcnet = { - .name = "pcnet", - .version_id = 3, - .minimum_version_id = 2, - .minimum_version_id_old = 2, - .fields = (VMStateField []) { - VMSTATE_INT32(rap, PCNetState), - VMSTATE_INT32(isr, PCNetState), - VMSTATE_INT32(lnkst, PCNetState), - VMSTATE_UINT32(rdra, PCNetState), - VMSTATE_UINT32(tdra, PCNetState), - VMSTATE_BUFFER(prom, PCNetState), - VMSTATE_UINT16_ARRAY(csr, PCNetState, 128), - VMSTATE_UINT16_ARRAY(bcr, PCNetState, 32), - VMSTATE_UINT64(timer, PCNetState), - VMSTATE_INT32(xmit_pos, PCNetState), - VMSTATE_BUFFER(buffer, PCNetState), - VMSTATE_UNUSED_TEST(is_version_2, 4), - VMSTATE_INT32(tx_busy, PCNetState), - VMSTATE_TIMER(poll_timer, PCNetState), - VMSTATE_END_OF_LIST() - } -}; - -void pcnet_common_cleanup(PCNetState *d) -{ - d->nic = NULL; -} - -int pcnet_common_init(DeviceState *dev, PCNetState *s, NetClientInfo *info) -{ - int i; - uint16_t checksum; - - s->poll_timer = qemu_new_timer_ns(vm_clock, pcnet_poll_timer, s); - - qemu_macaddr_default_if_unset(&s->conf.macaddr); - s->nic = qemu_new_nic(info, &s->conf, object_get_typename(OBJECT(dev)), dev->id, s); - qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); - - add_boot_device_path(s->conf.bootindex, dev, "/ethernet-phy@0"); - - /* Initialize the PROM */ - - /* - Datasheet: http://pdfdata.datasheetsite.com/web/24528/AM79C970A.pdf - page 95 - */ - memcpy(s->prom, s->conf.macaddr.a, 6); - /* Reserved Location: must be 00h */ - s->prom[6] = s->prom[7] = 0x00; - /* Reserved Location: must be 00h */ - s->prom[8] = 0x00; - /* Hardware ID: must be 11h if compatibility to AMD drivers is desired */ - s->prom[9] = 0x11; - /* User programmable space, init with 0 */ - s->prom[10] = s->prom[11] = 0x00; - /* LSByte of two-byte checksum, which is the sum of bytes 00h-0Bh - and bytes 0Eh and 0Fh, must therefore be initialized with 0! */ - s->prom[12] = s->prom[13] = 0x00; - /* Must be ASCII W (57h) if compatibility to AMD - driver software is desired */ - 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->lnkst = 0x40; /* initial link state: up */ - - return 0; -} |