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/*
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* QEMU NE2000 emulation
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*
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* Copyright (c) 2003-2004 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "hw.h" |
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#include "pci.h" |
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#include "pc.h" |
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#include "net.h" |
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/* debug NE2000 card */
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//#define DEBUG_NE2000
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|
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#define MAX_ETH_FRAME_SIZE 1514 |
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#define E8390_CMD 0x00 /* The command register (for all pages) */ |
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/* Page 0 register offsets. */
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#define EN0_CLDALO 0x01 /* Low byte of current local dma addr RD */ |
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#define EN0_STARTPG 0x01 /* Starting page of ring bfr WR */ |
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#define EN0_CLDAHI 0x02 /* High byte of current local dma addr RD */ |
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#define EN0_STOPPG 0x02 /* Ending page +1 of ring bfr WR */ |
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#define EN0_BOUNDARY 0x03 /* Boundary page of ring bfr RD WR */ |
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#define EN0_TSR 0x04 /* Transmit status reg RD */ |
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#define EN0_TPSR 0x04 /* Transmit starting page WR */ |
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#define EN0_NCR 0x05 /* Number of collision reg RD */ |
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#define EN0_TCNTLO 0x05 /* Low byte of tx byte count WR */ |
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#define EN0_FIFO 0x06 /* FIFO RD */ |
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#define EN0_TCNTHI 0x06 /* High byte of tx byte count WR */ |
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#define EN0_ISR 0x07 /* Interrupt status reg RD WR */ |
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#define EN0_CRDALO 0x08 /* low byte of current remote dma address RD */ |
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#define EN0_RSARLO 0x08 /* Remote start address reg 0 */ |
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#define EN0_CRDAHI 0x09 /* high byte, current remote dma address RD */ |
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#define EN0_RSARHI 0x09 /* Remote start address reg 1 */ |
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#define EN0_RCNTLO 0x0a /* Remote byte count reg WR */ |
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#define EN0_RTL8029ID0 0x0a /* Realtek ID byte #1 RD */ |
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#define EN0_RCNTHI 0x0b /* Remote byte count reg WR */ |
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#define EN0_RTL8029ID1 0x0b /* Realtek ID byte #2 RD */ |
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#define EN0_RSR 0x0c /* rx status reg RD */ |
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#define EN0_RXCR 0x0c /* RX configuration reg WR */ |
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#define EN0_TXCR 0x0d /* TX configuration reg WR */ |
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#define EN0_COUNTER0 0x0d /* Rcv alignment error counter RD */ |
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#define EN0_DCFG 0x0e /* Data configuration reg WR */ |
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#define EN0_COUNTER1 0x0e /* Rcv CRC error counter RD */ |
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#define EN0_IMR 0x0f /* Interrupt mask reg WR */ |
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#define EN0_COUNTER2 0x0f /* Rcv missed frame error counter RD */ |
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|
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#define EN1_PHYS 0x11 |
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#define EN1_CURPAG 0x17 |
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#define EN1_MULT 0x18 |
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#define EN2_STARTPG 0x21 /* Starting page of ring bfr RD */ |
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#define EN2_STOPPG 0x22 /* Ending page +1 of ring bfr RD */ |
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|
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#define EN3_CONFIG0 0x33 |
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#define EN3_CONFIG1 0x34 |
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#define EN3_CONFIG2 0x35 |
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#define EN3_CONFIG3 0x36 |
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/* Register accessed at EN_CMD, the 8390 base addr. */
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#define E8390_STOP 0x01 /* Stop and reset the chip */ |
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#define E8390_START 0x02 /* Start the chip, clear reset */ |
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#define E8390_TRANS 0x04 /* Transmit a frame */ |
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#define E8390_RREAD 0x08 /* Remote read */ |
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#define E8390_RWRITE 0x10 /* Remote write */ |
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#define E8390_NODMA 0x20 /* Remote DMA */ |
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#define E8390_PAGE0 0x00 /* Select page chip registers */ |
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#define E8390_PAGE1 0x40 /* using the two high-order bits */ |
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#define E8390_PAGE2 0x80 /* Page 3 is invalid. */ |
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|
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/* Bits in EN0_ISR - Interrupt status register */
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#define ENISR_RX 0x01 /* Receiver, no error */ |
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#define ENISR_TX 0x02 /* Transmitter, no error */ |
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#define ENISR_RX_ERR 0x04 /* Receiver, with error */ |
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#define ENISR_TX_ERR 0x08 /* Transmitter, with error */ |
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#define ENISR_OVER 0x10 /* Receiver overwrote the ring */ |
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#define ENISR_COUNTERS 0x20 /* Counters need emptying */ |
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#define ENISR_RDC 0x40 /* remote dma complete */ |
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#define ENISR_RESET 0x80 /* Reset completed */ |
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#define ENISR_ALL 0x3f /* Interrupts we will enable */ |
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/* Bits in received packet status byte and EN0_RSR*/
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#define ENRSR_RXOK 0x01 /* Received a good packet */ |
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#define ENRSR_CRC 0x02 /* CRC error */ |
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#define ENRSR_FAE 0x04 /* frame alignment error */ |
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#define ENRSR_FO 0x08 /* FIFO overrun */ |
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#define ENRSR_MPA 0x10 /* missed pkt */ |
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#define ENRSR_PHY 0x20 /* physical/multicast address */ |
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#define ENRSR_DIS 0x40 /* receiver disable. set in monitor mode */ |
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#define ENRSR_DEF 0x80 /* deferring */ |
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/* Transmitted packet status, EN0_TSR. */
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#define ENTSR_PTX 0x01 /* Packet transmitted without error */ |
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#define ENTSR_ND 0x02 /* The transmit wasn't deferred. */ |
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#define ENTSR_COL 0x04 /* The transmit collided at least once. */ |
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#define ENTSR_ABT 0x08 /* The transmit collided 16 times, and was deferred. */ |
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#define ENTSR_CRS 0x10 /* The carrier sense was lost. */ |
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#define ENTSR_FU 0x20 /* A "FIFO underrun" occurred during transmit. */ |
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#define ENTSR_CDH 0x40 /* The collision detect "heartbeat" signal was lost. */ |
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#define ENTSR_OWC 0x80 /* There was an out-of-window collision. */ |
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#define NE2000_PMEM_SIZE (32*1024) |
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#define NE2000_PMEM_START (16*1024) |
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#define NE2000_PMEM_END (NE2000_PMEM_SIZE+NE2000_PMEM_START)
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#define NE2000_MEM_SIZE NE2000_PMEM_END
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typedef struct NE2000State { |
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uint8_t cmd; |
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uint32_t start; |
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uint32_t stop; |
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uint8_t boundary; |
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uint8_t tsr; |
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uint8_t tpsr; |
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uint16_t tcnt; |
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uint16_t rcnt; |
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uint32_t rsar; |
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uint8_t rsr; |
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uint8_t rxcr; |
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uint8_t isr; |
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uint8_t dcfg; |
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uint8_t imr; |
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uint8_t phys[6]; /* mac address */ |
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uint8_t curpag; |
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uint8_t mult[8]; /* multicast mask array */ |
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qemu_irq irq; |
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int isa_io_base;
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PCIDevice *pci_dev; |
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VLANClientState *vc; |
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uint8_t macaddr[6];
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uint8_t mem[NE2000_MEM_SIZE]; |
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} NE2000State; |
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static void ne2000_reset(NE2000State *s) |
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{ |
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int i;
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s->isr = ENISR_RESET; |
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memcpy(s->mem, s->macaddr, 6);
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s->mem[14] = 0x57; |
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s->mem[15] = 0x57; |
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/* duplicate prom data */
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for(i = 15;i >= 0; i--) { |
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s->mem[2 * i] = s->mem[i];
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s->mem[2 * i + 1] = s->mem[i]; |
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} |
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} |
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static void ne2000_update_irq(NE2000State *s) |
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{ |
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int isr;
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isr = (s->isr & s->imr) & 0x7f;
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#if defined(DEBUG_NE2000)
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printf("NE2000: Set IRQ to %d (%02x %02x)\n",
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isr ? 1 : 0, s->isr, s->imr); |
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#endif
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qemu_set_irq(s->irq, (isr != 0));
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} |
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#define POLYNOMIAL 0x04c11db6 |
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/* From FreeBSD */
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/* XXX: optimize */
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static int compute_mcast_idx(const uint8_t *ep) |
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{ |
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uint32_t crc; |
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int carry, i, j;
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uint8_t b; |
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crc = 0xffffffff;
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for (i = 0; i < 6; i++) { |
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b = *ep++; |
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for (j = 0; j < 8; j++) { |
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carry = ((crc & 0x80000000L) ? 1 : 0) ^ (b & 0x01); |
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crc <<= 1;
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b >>= 1;
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if (carry)
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crc = ((crc ^ POLYNOMIAL) | carry); |
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} |
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} |
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return (crc >> 26); |
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} |
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static int ne2000_buffer_full(NE2000State *s) |
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{ |
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int avail, index, boundary;
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index = s->curpag << 8;
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boundary = s->boundary << 8;
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if (index < boundary)
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avail = boundary - index; |
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else
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avail = (s->stop - s->start) - (index - boundary); |
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if (avail < (MAX_ETH_FRAME_SIZE + 4)) |
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return 1; |
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return 0; |
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} |
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static int ne2000_can_receive(VLANClientState *vc) |
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{ |
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NE2000State *s = vc->opaque; |
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if (s->cmd & E8390_STOP)
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return 1; |
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return !ne2000_buffer_full(s);
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} |
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#define MIN_BUF_SIZE 60 |
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static ssize_t ne2000_receive(VLANClientState *vc, const uint8_t *buf, size_t size_) |
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{ |
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NE2000State *s = vc->opaque; |
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int size = size_;
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uint8_t *p; |
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unsigned int total_len, next, avail, len, index, mcast_idx; |
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uint8_t buf1[60];
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static const uint8_t broadcast_macaddr[6] = |
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{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; |
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#if defined(DEBUG_NE2000)
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printf("NE2000: received len=%d\n", size);
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#endif
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if (s->cmd & E8390_STOP || ne2000_buffer_full(s))
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return -1; |
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/* XXX: check this */
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if (s->rxcr & 0x10) { |
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/* promiscuous: receive all */
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} else {
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if (!memcmp(buf, broadcast_macaddr, 6)) { |
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/* broadcast address */
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if (!(s->rxcr & 0x04)) |
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return size;
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} else if (buf[0] & 0x01) { |
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/* multicast */
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if (!(s->rxcr & 0x08)) |
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return size;
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mcast_idx = compute_mcast_idx(buf); |
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if (!(s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7)))) |
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return size;
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} else if (s->mem[0] == buf[0] && |
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s->mem[2] == buf[1] && |
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s->mem[4] == buf[2] && |
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s->mem[6] == buf[3] && |
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s->mem[8] == buf[4] && |
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s->mem[10] == buf[5]) { |
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/* match */
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} else {
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return size;
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} |
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} |
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|
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|
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/* if too small buffer, then expand it */
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if (size < MIN_BUF_SIZE) {
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memcpy(buf1, buf, size); |
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memset(buf1 + size, 0, MIN_BUF_SIZE - size);
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buf = buf1; |
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size = MIN_BUF_SIZE; |
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} |
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|
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index = s->curpag << 8;
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/* 4 bytes for header */
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total_len = size + 4;
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/* address for next packet (4 bytes for CRC) */
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next = index + ((total_len + 4 + 255) & ~0xff); |
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if (next >= s->stop)
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next -= (s->stop - s->start); |
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/* prepare packet header */
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p = s->mem + index; |
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s->rsr = ENRSR_RXOK; /* receive status */
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/* XXX: check this */
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if (buf[0] & 0x01) |
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s->rsr |= ENRSR_PHY; |
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p[0] = s->rsr;
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p[1] = next >> 8; |
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p[2] = total_len;
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p[3] = total_len >> 8; |
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index += 4;
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|
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/* write packet data */
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while (size > 0) { |
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if (index <= s->stop)
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avail = s->stop - index; |
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else
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avail = 0;
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len = size; |
306 |
if (len > avail)
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len = avail; |
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memcpy(s->mem + index, buf, len); |
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buf += len; |
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index += len; |
311 |
if (index == s->stop)
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index = s->start; |
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size -= len; |
314 |
} |
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s->curpag = next >> 8;
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|
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/* now we can signal we have received something */
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s->isr |= ENISR_RX; |
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ne2000_update_irq(s); |
320 |
|
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return size_;
|
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} |
323 |
|
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static void ne2000_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
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{ |
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NE2000State *s = opaque; |
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int offset, page, index;
|
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|
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addr &= 0xf;
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#ifdef DEBUG_NE2000
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printf("NE2000: write addr=0x%x val=0x%02x\n", addr, val);
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#endif
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if (addr == E8390_CMD) {
|
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/* control register */
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s->cmd = val; |
336 |
if (!(val & E8390_STOP)) { /* START bit makes no sense on RTL8029... */ |
337 |
s->isr &= ~ENISR_RESET; |
338 |
/* test specific case: zero length transfer */
|
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if ((val & (E8390_RREAD | E8390_RWRITE)) &&
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s->rcnt == 0) {
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s->isr |= ENISR_RDC; |
342 |
ne2000_update_irq(s); |
343 |
} |
344 |
if (val & E8390_TRANS) {
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index = (s->tpsr << 8);
|
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/* XXX: next 2 lines are a hack to make netware 3.11 work */
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if (index >= NE2000_PMEM_END)
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index -= NE2000_PMEM_SIZE; |
349 |
/* fail safe: check range on the transmitted length */
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350 |
if (index + s->tcnt <= NE2000_PMEM_END) {
|
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qemu_send_packet(s->vc, s->mem + index, s->tcnt); |
352 |
} |
353 |
/* signal end of transfer */
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s->tsr = ENTSR_PTX; |
355 |
s->isr |= ENISR_TX; |
356 |
s->cmd &= ~E8390_TRANS; |
357 |
ne2000_update_irq(s); |
358 |
} |
359 |
} |
360 |
} else {
|
361 |
page = s->cmd >> 6;
|
362 |
offset = addr | (page << 4);
|
363 |
switch(offset) {
|
364 |
case EN0_STARTPG:
|
365 |
s->start = val << 8;
|
366 |
break;
|
367 |
case EN0_STOPPG:
|
368 |
s->stop = val << 8;
|
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break;
|
370 |
case EN0_BOUNDARY:
|
371 |
s->boundary = val; |
372 |
break;
|
373 |
case EN0_IMR:
|
374 |
s->imr = val; |
375 |
ne2000_update_irq(s); |
376 |
break;
|
377 |
case EN0_TPSR:
|
378 |
s->tpsr = val; |
379 |
break;
|
380 |
case EN0_TCNTLO:
|
381 |
s->tcnt = (s->tcnt & 0xff00) | val;
|
382 |
break;
|
383 |
case EN0_TCNTHI:
|
384 |
s->tcnt = (s->tcnt & 0x00ff) | (val << 8); |
385 |
break;
|
386 |
case EN0_RSARLO:
|
387 |
s->rsar = (s->rsar & 0xff00) | val;
|
388 |
break;
|
389 |
case EN0_RSARHI:
|
390 |
s->rsar = (s->rsar & 0x00ff) | (val << 8); |
391 |
break;
|
392 |
case EN0_RCNTLO:
|
393 |
s->rcnt = (s->rcnt & 0xff00) | val;
|
394 |
break;
|
395 |
case EN0_RCNTHI:
|
396 |
s->rcnt = (s->rcnt & 0x00ff) | (val << 8); |
397 |
break;
|
398 |
case EN0_RXCR:
|
399 |
s->rxcr = val; |
400 |
break;
|
401 |
case EN0_DCFG:
|
402 |
s->dcfg = val; |
403 |
break;
|
404 |
case EN0_ISR:
|
405 |
s->isr &= ~(val & 0x7f);
|
406 |
ne2000_update_irq(s); |
407 |
break;
|
408 |
case EN1_PHYS ... EN1_PHYS + 5: |
409 |
s->phys[offset - EN1_PHYS] = val; |
410 |
break;
|
411 |
case EN1_CURPAG:
|
412 |
s->curpag = val; |
413 |
break;
|
414 |
case EN1_MULT ... EN1_MULT + 7: |
415 |
s->mult[offset - EN1_MULT] = val; |
416 |
break;
|
417 |
} |
418 |
} |
419 |
} |
420 |
|
421 |
static uint32_t ne2000_ioport_read(void *opaque, uint32_t addr) |
422 |
{ |
423 |
NE2000State *s = opaque; |
424 |
int offset, page, ret;
|
425 |
|
426 |
addr &= 0xf;
|
427 |
if (addr == E8390_CMD) {
|
428 |
ret = s->cmd; |
429 |
} else {
|
430 |
page = s->cmd >> 6;
|
431 |
offset = addr | (page << 4);
|
432 |
switch(offset) {
|
433 |
case EN0_TSR:
|
434 |
ret = s->tsr; |
435 |
break;
|
436 |
case EN0_BOUNDARY:
|
437 |
ret = s->boundary; |
438 |
break;
|
439 |
case EN0_ISR:
|
440 |
ret = s->isr; |
441 |
break;
|
442 |
case EN0_RSARLO:
|
443 |
ret = s->rsar & 0x00ff;
|
444 |
break;
|
445 |
case EN0_RSARHI:
|
446 |
ret = s->rsar >> 8;
|
447 |
break;
|
448 |
case EN1_PHYS ... EN1_PHYS + 5: |
449 |
ret = s->phys[offset - EN1_PHYS]; |
450 |
break;
|
451 |
case EN1_CURPAG:
|
452 |
ret = s->curpag; |
453 |
break;
|
454 |
case EN1_MULT ... EN1_MULT + 7: |
455 |
ret = s->mult[offset - EN1_MULT]; |
456 |
break;
|
457 |
case EN0_RSR:
|
458 |
ret = s->rsr; |
459 |
break;
|
460 |
case EN2_STARTPG:
|
461 |
ret = s->start >> 8;
|
462 |
break;
|
463 |
case EN2_STOPPG:
|
464 |
ret = s->stop >> 8;
|
465 |
break;
|
466 |
case EN0_RTL8029ID0:
|
467 |
ret = 0x50;
|
468 |
break;
|
469 |
case EN0_RTL8029ID1:
|
470 |
ret = 0x43;
|
471 |
break;
|
472 |
case EN3_CONFIG0:
|
473 |
ret = 0; /* 10baseT media */ |
474 |
break;
|
475 |
case EN3_CONFIG2:
|
476 |
ret = 0x40; /* 10baseT active */ |
477 |
break;
|
478 |
case EN3_CONFIG3:
|
479 |
ret = 0x40; /* Full duplex */ |
480 |
break;
|
481 |
default:
|
482 |
ret = 0x00;
|
483 |
break;
|
484 |
} |
485 |
} |
486 |
#ifdef DEBUG_NE2000
|
487 |
printf("NE2000: read addr=0x%x val=%02x\n", addr, ret);
|
488 |
#endif
|
489 |
return ret;
|
490 |
} |
491 |
|
492 |
static inline void ne2000_mem_writeb(NE2000State *s, uint32_t addr, |
493 |
uint32_t val) |
494 |
{ |
495 |
if (addr < 32 || |
496 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) { |
497 |
s->mem[addr] = val; |
498 |
} |
499 |
} |
500 |
|
501 |
static inline void ne2000_mem_writew(NE2000State *s, uint32_t addr, |
502 |
uint32_t val) |
503 |
{ |
504 |
addr &= ~1; /* XXX: check exact behaviour if not even */ |
505 |
if (addr < 32 || |
506 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) { |
507 |
*(uint16_t *)(s->mem + addr) = cpu_to_le16(val); |
508 |
} |
509 |
} |
510 |
|
511 |
static inline void ne2000_mem_writel(NE2000State *s, uint32_t addr, |
512 |
uint32_t val) |
513 |
{ |
514 |
addr &= ~1; /* XXX: check exact behaviour if not even */ |
515 |
if (addr < 32 || |
516 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) { |
517 |
cpu_to_le32wu((uint32_t *)(s->mem + addr), val); |
518 |
} |
519 |
} |
520 |
|
521 |
static inline uint32_t ne2000_mem_readb(NE2000State *s, uint32_t addr) |
522 |
{ |
523 |
if (addr < 32 || |
524 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) { |
525 |
return s->mem[addr];
|
526 |
} else {
|
527 |
return 0xff; |
528 |
} |
529 |
} |
530 |
|
531 |
static inline uint32_t ne2000_mem_readw(NE2000State *s, uint32_t addr) |
532 |
{ |
533 |
addr &= ~1; /* XXX: check exact behaviour if not even */ |
534 |
if (addr < 32 || |
535 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) { |
536 |
return le16_to_cpu(*(uint16_t *)(s->mem + addr));
|
537 |
} else {
|
538 |
return 0xffff; |
539 |
} |
540 |
} |
541 |
|
542 |
static inline uint32_t ne2000_mem_readl(NE2000State *s, uint32_t addr) |
543 |
{ |
544 |
addr &= ~1; /* XXX: check exact behaviour if not even */ |
545 |
if (addr < 32 || |
546 |
(addr >= NE2000_PMEM_START && addr < NE2000_MEM_SIZE)) { |
547 |
return le32_to_cpupu((uint32_t *)(s->mem + addr));
|
548 |
} else {
|
549 |
return 0xffffffff; |
550 |
} |
551 |
} |
552 |
|
553 |
static inline void ne2000_dma_update(NE2000State *s, int len) |
554 |
{ |
555 |
s->rsar += len; |
556 |
/* wrap */
|
557 |
/* XXX: check what to do if rsar > stop */
|
558 |
if (s->rsar == s->stop)
|
559 |
s->rsar = s->start; |
560 |
|
561 |
if (s->rcnt <= len) {
|
562 |
s->rcnt = 0;
|
563 |
/* signal end of transfer */
|
564 |
s->isr |= ENISR_RDC; |
565 |
ne2000_update_irq(s); |
566 |
} else {
|
567 |
s->rcnt -= len; |
568 |
} |
569 |
} |
570 |
|
571 |
static void ne2000_asic_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
572 |
{ |
573 |
NE2000State *s = opaque; |
574 |
|
575 |
#ifdef DEBUG_NE2000
|
576 |
printf("NE2000: asic write val=0x%04x\n", val);
|
577 |
#endif
|
578 |
if (s->rcnt == 0) |
579 |
return;
|
580 |
if (s->dcfg & 0x01) { |
581 |
/* 16 bit access */
|
582 |
ne2000_mem_writew(s, s->rsar, val); |
583 |
ne2000_dma_update(s, 2);
|
584 |
} else {
|
585 |
/* 8 bit access */
|
586 |
ne2000_mem_writeb(s, s->rsar, val); |
587 |
ne2000_dma_update(s, 1);
|
588 |
} |
589 |
} |
590 |
|
591 |
static uint32_t ne2000_asic_ioport_read(void *opaque, uint32_t addr) |
592 |
{ |
593 |
NE2000State *s = opaque; |
594 |
int ret;
|
595 |
|
596 |
if (s->dcfg & 0x01) { |
597 |
/* 16 bit access */
|
598 |
ret = ne2000_mem_readw(s, s->rsar); |
599 |
ne2000_dma_update(s, 2);
|
600 |
} else {
|
601 |
/* 8 bit access */
|
602 |
ret = ne2000_mem_readb(s, s->rsar); |
603 |
ne2000_dma_update(s, 1);
|
604 |
} |
605 |
#ifdef DEBUG_NE2000
|
606 |
printf("NE2000: asic read val=0x%04x\n", ret);
|
607 |
#endif
|
608 |
return ret;
|
609 |
} |
610 |
|
611 |
static void ne2000_asic_ioport_writel(void *opaque, uint32_t addr, uint32_t val) |
612 |
{ |
613 |
NE2000State *s = opaque; |
614 |
|
615 |
#ifdef DEBUG_NE2000
|
616 |
printf("NE2000: asic writel val=0x%04x\n", val);
|
617 |
#endif
|
618 |
if (s->rcnt == 0) |
619 |
return;
|
620 |
/* 32 bit access */
|
621 |
ne2000_mem_writel(s, s->rsar, val); |
622 |
ne2000_dma_update(s, 4);
|
623 |
} |
624 |
|
625 |
static uint32_t ne2000_asic_ioport_readl(void *opaque, uint32_t addr) |
626 |
{ |
627 |
NE2000State *s = opaque; |
628 |
int ret;
|
629 |
|
630 |
/* 32 bit access */
|
631 |
ret = ne2000_mem_readl(s, s->rsar); |
632 |
ne2000_dma_update(s, 4);
|
633 |
#ifdef DEBUG_NE2000
|
634 |
printf("NE2000: asic readl val=0x%04x\n", ret);
|
635 |
#endif
|
636 |
return ret;
|
637 |
} |
638 |
|
639 |
static void ne2000_reset_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
640 |
{ |
641 |
/* nothing to do (end of reset pulse) */
|
642 |
} |
643 |
|
644 |
static uint32_t ne2000_reset_ioport_read(void *opaque, uint32_t addr) |
645 |
{ |
646 |
NE2000State *s = opaque; |
647 |
ne2000_reset(s); |
648 |
return 0; |
649 |
} |
650 |
|
651 |
static void ne2000_save(QEMUFile* f,void* opaque) |
652 |
{ |
653 |
NE2000State* s=(NE2000State*)opaque; |
654 |
uint32_t tmp; |
655 |
|
656 |
if (s->pci_dev)
|
657 |
pci_device_save(s->pci_dev, f); |
658 |
|
659 |
qemu_put_8s(f, &s->rxcr); |
660 |
|
661 |
qemu_put_8s(f, &s->cmd); |
662 |
qemu_put_be32s(f, &s->start); |
663 |
qemu_put_be32s(f, &s->stop); |
664 |
qemu_put_8s(f, &s->boundary); |
665 |
qemu_put_8s(f, &s->tsr); |
666 |
qemu_put_8s(f, &s->tpsr); |
667 |
qemu_put_be16s(f, &s->tcnt); |
668 |
qemu_put_be16s(f, &s->rcnt); |
669 |
qemu_put_be32s(f, &s->rsar); |
670 |
qemu_put_8s(f, &s->rsr); |
671 |
qemu_put_8s(f, &s->isr); |
672 |
qemu_put_8s(f, &s->dcfg); |
673 |
qemu_put_8s(f, &s->imr); |
674 |
qemu_put_buffer(f, s->phys, 6);
|
675 |
qemu_put_8s(f, &s->curpag); |
676 |
qemu_put_buffer(f, s->mult, 8);
|
677 |
tmp = 0;
|
678 |
qemu_put_be32s(f, &tmp); /* ignored, was irq */
|
679 |
qemu_put_buffer(f, s->mem, NE2000_MEM_SIZE); |
680 |
} |
681 |
|
682 |
static int ne2000_load(QEMUFile* f,void* opaque,int version_id) |
683 |
{ |
684 |
NE2000State* s=(NE2000State*)opaque; |
685 |
int ret;
|
686 |
uint32_t tmp; |
687 |
|
688 |
if (version_id > 3) |
689 |
return -EINVAL;
|
690 |
|
691 |
if (s->pci_dev && version_id >= 3) { |
692 |
ret = pci_device_load(s->pci_dev, f); |
693 |
if (ret < 0) |
694 |
return ret;
|
695 |
} |
696 |
|
697 |
if (version_id >= 2) { |
698 |
qemu_get_8s(f, &s->rxcr); |
699 |
} else {
|
700 |
s->rxcr = 0x0c;
|
701 |
} |
702 |
|
703 |
qemu_get_8s(f, &s->cmd); |
704 |
qemu_get_be32s(f, &s->start); |
705 |
qemu_get_be32s(f, &s->stop); |
706 |
qemu_get_8s(f, &s->boundary); |
707 |
qemu_get_8s(f, &s->tsr); |
708 |
qemu_get_8s(f, &s->tpsr); |
709 |
qemu_get_be16s(f, &s->tcnt); |
710 |
qemu_get_be16s(f, &s->rcnt); |
711 |
qemu_get_be32s(f, &s->rsar); |
712 |
qemu_get_8s(f, &s->rsr); |
713 |
qemu_get_8s(f, &s->isr); |
714 |
qemu_get_8s(f, &s->dcfg); |
715 |
qemu_get_8s(f, &s->imr); |
716 |
qemu_get_buffer(f, s->phys, 6);
|
717 |
qemu_get_8s(f, &s->curpag); |
718 |
qemu_get_buffer(f, s->mult, 8);
|
719 |
qemu_get_be32s(f, &tmp); /* ignored */
|
720 |
qemu_get_buffer(f, s->mem, NE2000_MEM_SIZE); |
721 |
|
722 |
return 0; |
723 |
} |
724 |
|
725 |
static void isa_ne2000_cleanup(VLANClientState *vc) |
726 |
{ |
727 |
NE2000State *s = vc->opaque; |
728 |
|
729 |
unregister_savevm("ne2000", s);
|
730 |
|
731 |
isa_unassign_ioport(s->isa_io_base, 16);
|
732 |
isa_unassign_ioport(s->isa_io_base + 0x10, 2); |
733 |
isa_unassign_ioport(s->isa_io_base + 0x1f, 1); |
734 |
|
735 |
qemu_free(s); |
736 |
} |
737 |
|
738 |
void isa_ne2000_init(int base, qemu_irq irq, NICInfo *nd) |
739 |
{ |
740 |
NE2000State *s; |
741 |
|
742 |
qemu_check_nic_model(nd, "ne2k_isa");
|
743 |
|
744 |
s = qemu_mallocz(sizeof(NE2000State));
|
745 |
|
746 |
register_ioport_write(base, 16, 1, ne2000_ioport_write, s); |
747 |
register_ioport_read(base, 16, 1, ne2000_ioport_read, s); |
748 |
|
749 |
register_ioport_write(base + 0x10, 1, 1, ne2000_asic_ioport_write, s); |
750 |
register_ioport_read(base + 0x10, 1, 1, ne2000_asic_ioport_read, s); |
751 |
register_ioport_write(base + 0x10, 2, 2, ne2000_asic_ioport_write, s); |
752 |
register_ioport_read(base + 0x10, 2, 2, ne2000_asic_ioport_read, s); |
753 |
|
754 |
register_ioport_write(base + 0x1f, 1, 1, ne2000_reset_ioport_write, s); |
755 |
register_ioport_read(base + 0x1f, 1, 1, ne2000_reset_ioport_read, s); |
756 |
s->isa_io_base = base; |
757 |
s->irq = irq; |
758 |
memcpy(s->macaddr, nd->macaddr, 6);
|
759 |
|
760 |
ne2000_reset(s); |
761 |
|
762 |
s->vc = qemu_new_vlan_client(nd->vlan, nd->model, nd->name, |
763 |
ne2000_can_receive, ne2000_receive, NULL,
|
764 |
isa_ne2000_cleanup, s); |
765 |
|
766 |
qemu_format_nic_info_str(s->vc, s->macaddr); |
767 |
|
768 |
register_savevm("ne2000", -1, 2, ne2000_save, ne2000_load, s); |
769 |
} |
770 |
|
771 |
/***********************************************************/
|
772 |
/* PCI NE2000 definitions */
|
773 |
|
774 |
typedef struct PCINE2000State { |
775 |
PCIDevice dev; |
776 |
NE2000State ne2000; |
777 |
} PCINE2000State; |
778 |
|
779 |
static void ne2000_map(PCIDevice *pci_dev, int region_num, |
780 |
uint32_t addr, uint32_t size, int type)
|
781 |
{ |
782 |
PCINE2000State *d = (PCINE2000State *)pci_dev; |
783 |
NE2000State *s = &d->ne2000; |
784 |
|
785 |
register_ioport_write(addr, 16, 1, ne2000_ioport_write, s); |
786 |
register_ioport_read(addr, 16, 1, ne2000_ioport_read, s); |
787 |
|
788 |
register_ioport_write(addr + 0x10, 1, 1, ne2000_asic_ioport_write, s); |
789 |
register_ioport_read(addr + 0x10, 1, 1, ne2000_asic_ioport_read, s); |
790 |
register_ioport_write(addr + 0x10, 2, 2, ne2000_asic_ioport_write, s); |
791 |
register_ioport_read(addr + 0x10, 2, 2, ne2000_asic_ioport_read, s); |
792 |
register_ioport_write(addr + 0x10, 4, 4, ne2000_asic_ioport_writel, s); |
793 |
register_ioport_read(addr + 0x10, 4, 4, ne2000_asic_ioport_readl, s); |
794 |
|
795 |
register_ioport_write(addr + 0x1f, 1, 1, ne2000_reset_ioport_write, s); |
796 |
register_ioport_read(addr + 0x1f, 1, 1, ne2000_reset_ioport_read, s); |
797 |
} |
798 |
|
799 |
static void ne2000_cleanup(VLANClientState *vc) |
800 |
{ |
801 |
NE2000State *s = vc->opaque; |
802 |
|
803 |
unregister_savevm("ne2000", s);
|
804 |
} |
805 |
|
806 |
static void pci_ne2000_init(PCIDevice *pci_dev) |
807 |
{ |
808 |
PCINE2000State *d = (PCINE2000State *)pci_dev; |
809 |
NE2000State *s; |
810 |
uint8_t *pci_conf; |
811 |
|
812 |
pci_conf = d->dev.config; |
813 |
pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_REALTEK); |
814 |
pci_config_set_device_id(pci_conf, PCI_DEVICE_ID_REALTEK_8029); |
815 |
pci_config_set_class(pci_conf, PCI_CLASS_NETWORK_ETHERNET); |
816 |
pci_conf[PCI_HEADER_TYPE] = PCI_HEADER_TYPE_NORMAL; // header_type
|
817 |
pci_conf[0x3d] = 1; // interrupt pin 0 |
818 |
|
819 |
pci_register_bar(&d->dev, 0, 0x100, |
820 |
PCI_ADDRESS_SPACE_IO, ne2000_map); |
821 |
s = &d->ne2000; |
822 |
s->irq = d->dev.irq[0];
|
823 |
s->pci_dev = (PCIDevice *)d; |
824 |
qdev_get_macaddr(&d->dev.qdev, s->macaddr); |
825 |
ne2000_reset(s); |
826 |
s->vc = qdev_get_vlan_client(&d->dev.qdev, |
827 |
ne2000_can_receive, ne2000_receive, NULL,
|
828 |
ne2000_cleanup, s); |
829 |
|
830 |
qemu_format_nic_info_str(s->vc, s->macaddr); |
831 |
|
832 |
register_savevm("ne2000", -1, 3, ne2000_save, ne2000_load, s); |
833 |
} |
834 |
|
835 |
static PCIDeviceInfo ne2000_info = {
|
836 |
.qdev.name = "ne2k_pci",
|
837 |
.qdev.size = sizeof(PCINE2000State),
|
838 |
.init = pci_ne2000_init, |
839 |
}; |
840 |
|
841 |
static void ne2000_register_devices(void) |
842 |
{ |
843 |
pci_qdev_register(&ne2000_info); |
844 |
} |
845 |
|
846 |
device_init(ne2000_register_devices) |