149ab747fSPaolo Bonzini /* 249ab747fSPaolo Bonzini * QEMU model of XGMAC Ethernet. 349ab747fSPaolo Bonzini * 449ab747fSPaolo Bonzini * derived from the Xilinx AXI-Ethernet by Edgar E. Iglesias. 549ab747fSPaolo Bonzini * 649ab747fSPaolo Bonzini * Copyright (c) 2011 Calxeda, Inc. 749ab747fSPaolo Bonzini * 849ab747fSPaolo Bonzini * Permission is hereby granted, free of charge, to any person obtaining a copy 949ab747fSPaolo Bonzini * of this software and associated documentation files (the "Software"), to deal 1049ab747fSPaolo Bonzini * in the Software without restriction, including without limitation the rights 1149ab747fSPaolo Bonzini * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 1249ab747fSPaolo Bonzini * copies of the Software, and to permit persons to whom the Software is 1349ab747fSPaolo Bonzini * furnished to do so, subject to the following conditions: 1449ab747fSPaolo Bonzini * 1549ab747fSPaolo Bonzini * The above copyright notice and this permission notice shall be included in 1649ab747fSPaolo Bonzini * all copies or substantial portions of the Software. 1749ab747fSPaolo Bonzini * 1849ab747fSPaolo Bonzini * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 1949ab747fSPaolo Bonzini * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 2049ab747fSPaolo Bonzini * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 2149ab747fSPaolo Bonzini * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 2249ab747fSPaolo Bonzini * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 2349ab747fSPaolo Bonzini * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 2449ab747fSPaolo Bonzini * THE SOFTWARE. 2549ab747fSPaolo Bonzini */ 2649ab747fSPaolo Bonzini 278ef94f0bSPeter Maydell #include "qemu/osdep.h" 2864552b6bSMarkus Armbruster #include "hw/irq.h" 2949ab747fSPaolo Bonzini #include "hw/sysbus.h" 30*d6454270SMarkus Armbruster #include "migration/vmstate.h" 3149ab747fSPaolo Bonzini #include "qemu/log.h" 320b8fa32fSMarkus Armbruster #include "qemu/module.h" 3349ab747fSPaolo Bonzini #include "net/net.h" 3449ab747fSPaolo Bonzini 3549ab747fSPaolo Bonzini #ifdef DEBUG_XGMAC 3649ab747fSPaolo Bonzini #define DEBUGF_BRK(message, args...) do { \ 3749ab747fSPaolo Bonzini fprintf(stderr, (message), ## args); \ 3849ab747fSPaolo Bonzini } while (0) 3949ab747fSPaolo Bonzini #else 4049ab747fSPaolo Bonzini #define DEBUGF_BRK(message, args...) do { } while (0) 4149ab747fSPaolo Bonzini #endif 4249ab747fSPaolo Bonzini 4349ab747fSPaolo Bonzini #define XGMAC_CONTROL 0x00000000 /* MAC Configuration */ 4449ab747fSPaolo Bonzini #define XGMAC_FRAME_FILTER 0x00000001 /* MAC Frame Filter */ 4549ab747fSPaolo Bonzini #define XGMAC_FLOW_CTRL 0x00000006 /* MAC Flow Control */ 4649ab747fSPaolo Bonzini #define XGMAC_VLAN_TAG 0x00000007 /* VLAN Tags */ 4749ab747fSPaolo Bonzini #define XGMAC_VERSION 0x00000008 /* Version */ 4849ab747fSPaolo Bonzini /* VLAN tag for insertion or replacement into tx frames */ 4949ab747fSPaolo Bonzini #define XGMAC_VLAN_INCL 0x00000009 5049ab747fSPaolo Bonzini #define XGMAC_LPI_CTRL 0x0000000a /* LPI Control and Status */ 5149ab747fSPaolo Bonzini #define XGMAC_LPI_TIMER 0x0000000b /* LPI Timers Control */ 5249ab747fSPaolo Bonzini #define XGMAC_TX_PACE 0x0000000c /* Transmit Pace and Stretch */ 5349ab747fSPaolo Bonzini #define XGMAC_VLAN_HASH 0x0000000d /* VLAN Hash Table */ 5449ab747fSPaolo Bonzini #define XGMAC_DEBUG 0x0000000e /* Debug */ 5549ab747fSPaolo Bonzini #define XGMAC_INT_STATUS 0x0000000f /* Interrupt and Control */ 5649ab747fSPaolo Bonzini /* HASH table registers */ 5749ab747fSPaolo Bonzini #define XGMAC_HASH(n) ((0x00000300/4) + (n)) 5849ab747fSPaolo Bonzini #define XGMAC_NUM_HASH 16 5949ab747fSPaolo Bonzini /* Operation Mode */ 6049ab747fSPaolo Bonzini #define XGMAC_OPMODE (0x00000400/4) 6149ab747fSPaolo Bonzini /* Remote Wake-Up Frame Filter */ 6249ab747fSPaolo Bonzini #define XGMAC_REMOTE_WAKE (0x00000700/4) 6349ab747fSPaolo Bonzini /* PMT Control and Status */ 6449ab747fSPaolo Bonzini #define XGMAC_PMT (0x00000704/4) 6549ab747fSPaolo Bonzini 6649ab747fSPaolo Bonzini #define XGMAC_ADDR_HIGH(reg) (0x00000010+((reg) * 2)) 6749ab747fSPaolo Bonzini #define XGMAC_ADDR_LOW(reg) (0x00000011+((reg) * 2)) 6849ab747fSPaolo Bonzini 6949ab747fSPaolo Bonzini #define DMA_BUS_MODE 0x000003c0 /* Bus Mode */ 7049ab747fSPaolo Bonzini #define DMA_XMT_POLL_DEMAND 0x000003c1 /* Transmit Poll Demand */ 7149ab747fSPaolo Bonzini #define DMA_RCV_POLL_DEMAND 0x000003c2 /* Received Poll Demand */ 7249ab747fSPaolo Bonzini #define DMA_RCV_BASE_ADDR 0x000003c3 /* Receive List Base */ 7349ab747fSPaolo Bonzini #define DMA_TX_BASE_ADDR 0x000003c4 /* Transmit List Base */ 7449ab747fSPaolo Bonzini #define DMA_STATUS 0x000003c5 /* Status Register */ 7549ab747fSPaolo Bonzini #define DMA_CONTROL 0x000003c6 /* Ctrl (Operational Mode) */ 7649ab747fSPaolo Bonzini #define DMA_INTR_ENA 0x000003c7 /* Interrupt Enable */ 7749ab747fSPaolo Bonzini #define DMA_MISSED_FRAME_CTR 0x000003c8 /* Missed Frame Counter */ 7849ab747fSPaolo Bonzini /* Receive Interrupt Watchdog Timer */ 7949ab747fSPaolo Bonzini #define DMA_RI_WATCHDOG_TIMER 0x000003c9 8049ab747fSPaolo Bonzini #define DMA_AXI_BUS 0x000003ca /* AXI Bus Mode */ 8149ab747fSPaolo Bonzini #define DMA_AXI_STATUS 0x000003cb /* AXI Status */ 8249ab747fSPaolo Bonzini #define DMA_CUR_TX_DESC_ADDR 0x000003d2 /* Current Host Tx Descriptor */ 8349ab747fSPaolo Bonzini #define DMA_CUR_RX_DESC_ADDR 0x000003d3 /* Current Host Rx Descriptor */ 8449ab747fSPaolo Bonzini #define DMA_CUR_TX_BUF_ADDR 0x000003d4 /* Current Host Tx Buffer */ 8549ab747fSPaolo Bonzini #define DMA_CUR_RX_BUF_ADDR 0x000003d5 /* Current Host Rx Buffer */ 8649ab747fSPaolo Bonzini #define DMA_HW_FEATURE 0x000003d6 /* Enabled Hardware Features */ 8749ab747fSPaolo Bonzini 8849ab747fSPaolo Bonzini /* DMA Status register defines */ 8949ab747fSPaolo Bonzini #define DMA_STATUS_GMI 0x08000000 /* MMC interrupt */ 9049ab747fSPaolo Bonzini #define DMA_STATUS_GLI 0x04000000 /* GMAC Line interface int */ 9149ab747fSPaolo Bonzini #define DMA_STATUS_EB_MASK 0x00380000 /* Error Bits Mask */ 9249ab747fSPaolo Bonzini #define DMA_STATUS_EB_TX_ABORT 0x00080000 /* Error Bits - TX Abort */ 9349ab747fSPaolo Bonzini #define DMA_STATUS_EB_RX_ABORT 0x00100000 /* Error Bits - RX Abort */ 9449ab747fSPaolo Bonzini #define DMA_STATUS_TS_MASK 0x00700000 /* Transmit Process State */ 9549ab747fSPaolo Bonzini #define DMA_STATUS_TS_SHIFT 20 9649ab747fSPaolo Bonzini #define DMA_STATUS_RS_MASK 0x000e0000 /* Receive Process State */ 9749ab747fSPaolo Bonzini #define DMA_STATUS_RS_SHIFT 17 9849ab747fSPaolo Bonzini #define DMA_STATUS_NIS 0x00010000 /* Normal Interrupt Summary */ 9949ab747fSPaolo Bonzini #define DMA_STATUS_AIS 0x00008000 /* Abnormal Interrupt Summary */ 10049ab747fSPaolo Bonzini #define DMA_STATUS_ERI 0x00004000 /* Early Receive Interrupt */ 10149ab747fSPaolo Bonzini #define DMA_STATUS_FBI 0x00002000 /* Fatal Bus Error Interrupt */ 10249ab747fSPaolo Bonzini #define DMA_STATUS_ETI 0x00000400 /* Early Transmit Interrupt */ 10349ab747fSPaolo Bonzini #define DMA_STATUS_RWT 0x00000200 /* Receive Watchdog Timeout */ 10449ab747fSPaolo Bonzini #define DMA_STATUS_RPS 0x00000100 /* Receive Process Stopped */ 10549ab747fSPaolo Bonzini #define DMA_STATUS_RU 0x00000080 /* Receive Buffer Unavailable */ 10649ab747fSPaolo Bonzini #define DMA_STATUS_RI 0x00000040 /* Receive Interrupt */ 10749ab747fSPaolo Bonzini #define DMA_STATUS_UNF 0x00000020 /* Transmit Underflow */ 10849ab747fSPaolo Bonzini #define DMA_STATUS_OVF 0x00000010 /* Receive Overflow */ 10949ab747fSPaolo Bonzini #define DMA_STATUS_TJT 0x00000008 /* Transmit Jabber Timeout */ 11049ab747fSPaolo Bonzini #define DMA_STATUS_TU 0x00000004 /* Transmit Buffer Unavailable */ 11149ab747fSPaolo Bonzini #define DMA_STATUS_TPS 0x00000002 /* Transmit Process Stopped */ 11249ab747fSPaolo Bonzini #define DMA_STATUS_TI 0x00000001 /* Transmit Interrupt */ 11349ab747fSPaolo Bonzini 11449ab747fSPaolo Bonzini /* DMA Control register defines */ 11549ab747fSPaolo Bonzini #define DMA_CONTROL_ST 0x00002000 /* Start/Stop Transmission */ 11649ab747fSPaolo Bonzini #define DMA_CONTROL_SR 0x00000002 /* Start/Stop Receive */ 11749ab747fSPaolo Bonzini #define DMA_CONTROL_DFF 0x01000000 /* Disable flush of rx frames */ 11849ab747fSPaolo Bonzini 11949ab747fSPaolo Bonzini struct desc { 12049ab747fSPaolo Bonzini uint32_t ctl_stat; 12149ab747fSPaolo Bonzini uint16_t buffer1_size; 12249ab747fSPaolo Bonzini uint16_t buffer2_size; 12349ab747fSPaolo Bonzini uint32_t buffer1_addr; 12449ab747fSPaolo Bonzini uint32_t buffer2_addr; 12549ab747fSPaolo Bonzini uint32_t ext_stat; 12649ab747fSPaolo Bonzini uint32_t res[3]; 12749ab747fSPaolo Bonzini }; 12849ab747fSPaolo Bonzini 12949ab747fSPaolo Bonzini #define R_MAX 0x400 13049ab747fSPaolo Bonzini 13149ab747fSPaolo Bonzini typedef struct RxTxStats { 13249ab747fSPaolo Bonzini uint64_t rx_bytes; 13349ab747fSPaolo Bonzini uint64_t tx_bytes; 13449ab747fSPaolo Bonzini 13549ab747fSPaolo Bonzini uint64_t rx; 13649ab747fSPaolo Bonzini uint64_t rx_bcast; 13749ab747fSPaolo Bonzini uint64_t rx_mcast; 13849ab747fSPaolo Bonzini } RxTxStats; 13949ab747fSPaolo Bonzini 140546921eaSAndreas Färber #define TYPE_XGMAC "xgmac" 141546921eaSAndreas Färber #define XGMAC(obj) OBJECT_CHECK(XgmacState, (obj), TYPE_XGMAC) 142546921eaSAndreas Färber 14349ab747fSPaolo Bonzini typedef struct XgmacState { 144546921eaSAndreas Färber SysBusDevice parent_obj; 145546921eaSAndreas Färber 14649ab747fSPaolo Bonzini MemoryRegion iomem; 14749ab747fSPaolo Bonzini qemu_irq sbd_irq; 14849ab747fSPaolo Bonzini qemu_irq pmt_irq; 14949ab747fSPaolo Bonzini qemu_irq mci_irq; 15049ab747fSPaolo Bonzini NICState *nic; 15149ab747fSPaolo Bonzini NICConf conf; 15249ab747fSPaolo Bonzini 15349ab747fSPaolo Bonzini struct RxTxStats stats; 15449ab747fSPaolo Bonzini uint32_t regs[R_MAX]; 15549ab747fSPaolo Bonzini } XgmacState; 15649ab747fSPaolo Bonzini 1576a0a70b0SStefan Weil static const VMStateDescription vmstate_rxtx_stats = { 15849ab747fSPaolo Bonzini .name = "xgmac_stats", 15949ab747fSPaolo Bonzini .version_id = 1, 16049ab747fSPaolo Bonzini .minimum_version_id = 1, 16149ab747fSPaolo Bonzini .fields = (VMStateField[]) { 16249ab747fSPaolo Bonzini VMSTATE_UINT64(rx_bytes, RxTxStats), 16349ab747fSPaolo Bonzini VMSTATE_UINT64(tx_bytes, RxTxStats), 16449ab747fSPaolo Bonzini VMSTATE_UINT64(rx, RxTxStats), 16549ab747fSPaolo Bonzini VMSTATE_UINT64(rx_bcast, RxTxStats), 16649ab747fSPaolo Bonzini VMSTATE_UINT64(rx_mcast, RxTxStats), 16749ab747fSPaolo Bonzini VMSTATE_END_OF_LIST() 16849ab747fSPaolo Bonzini } 16949ab747fSPaolo Bonzini }; 17049ab747fSPaolo Bonzini 17149ab747fSPaolo Bonzini static const VMStateDescription vmstate_xgmac = { 17249ab747fSPaolo Bonzini .name = "xgmac", 17349ab747fSPaolo Bonzini .version_id = 1, 17449ab747fSPaolo Bonzini .minimum_version_id = 1, 17549ab747fSPaolo Bonzini .fields = (VMStateField[]) { 17649ab747fSPaolo Bonzini VMSTATE_STRUCT(stats, XgmacState, 0, vmstate_rxtx_stats, RxTxStats), 17749ab747fSPaolo Bonzini VMSTATE_UINT32_ARRAY(regs, XgmacState, R_MAX), 17849ab747fSPaolo Bonzini VMSTATE_END_OF_LIST() 17949ab747fSPaolo Bonzini } 18049ab747fSPaolo Bonzini }; 18149ab747fSPaolo Bonzini 182546921eaSAndreas Färber static void xgmac_read_desc(XgmacState *s, struct desc *d, int rx) 18349ab747fSPaolo Bonzini { 18449ab747fSPaolo Bonzini uint32_t addr = rx ? s->regs[DMA_CUR_RX_DESC_ADDR] : 18549ab747fSPaolo Bonzini s->regs[DMA_CUR_TX_DESC_ADDR]; 18649ab747fSPaolo Bonzini cpu_physical_memory_read(addr, d, sizeof(*d)); 18749ab747fSPaolo Bonzini } 18849ab747fSPaolo Bonzini 189546921eaSAndreas Färber static void xgmac_write_desc(XgmacState *s, struct desc *d, int rx) 19049ab747fSPaolo Bonzini { 19149ab747fSPaolo Bonzini int reg = rx ? DMA_CUR_RX_DESC_ADDR : DMA_CUR_TX_DESC_ADDR; 19249ab747fSPaolo Bonzini uint32_t addr = s->regs[reg]; 19349ab747fSPaolo Bonzini 19449ab747fSPaolo Bonzini if (!rx && (d->ctl_stat & 0x00200000)) { 19549ab747fSPaolo Bonzini s->regs[reg] = s->regs[DMA_TX_BASE_ADDR]; 19649ab747fSPaolo Bonzini } else if (rx && (d->buffer1_size & 0x8000)) { 19749ab747fSPaolo Bonzini s->regs[reg] = s->regs[DMA_RCV_BASE_ADDR]; 19849ab747fSPaolo Bonzini } else { 19949ab747fSPaolo Bonzini s->regs[reg] += sizeof(*d); 20049ab747fSPaolo Bonzini } 20149ab747fSPaolo Bonzini cpu_physical_memory_write(addr, d, sizeof(*d)); 20249ab747fSPaolo Bonzini } 20349ab747fSPaolo Bonzini 204546921eaSAndreas Färber static void xgmac_enet_send(XgmacState *s) 20549ab747fSPaolo Bonzini { 20649ab747fSPaolo Bonzini struct desc bd; 20749ab747fSPaolo Bonzini int frame_size; 20849ab747fSPaolo Bonzini int len; 20949ab747fSPaolo Bonzini uint8_t frame[8192]; 21049ab747fSPaolo Bonzini uint8_t *ptr; 21149ab747fSPaolo Bonzini 21249ab747fSPaolo Bonzini ptr = frame; 21349ab747fSPaolo Bonzini frame_size = 0; 21449ab747fSPaolo Bonzini while (1) { 21549ab747fSPaolo Bonzini xgmac_read_desc(s, &bd, 0); 21649ab747fSPaolo Bonzini if ((bd.ctl_stat & 0x80000000) == 0) { 21749ab747fSPaolo Bonzini /* Run out of descriptors to transmit. */ 21849ab747fSPaolo Bonzini break; 21949ab747fSPaolo Bonzini } 22049ab747fSPaolo Bonzini len = (bd.buffer1_size & 0xfff) + (bd.buffer2_size & 0xfff); 22149ab747fSPaolo Bonzini 22249ab747fSPaolo Bonzini if ((bd.buffer1_size & 0xfff) > 2048) { 22349ab747fSPaolo Bonzini DEBUGF_BRK("qemu:%s:ERROR...ERROR...ERROR... -- " 22449ab747fSPaolo Bonzini "xgmac buffer 1 len on send > 2048 (0x%x)\n", 22549ab747fSPaolo Bonzini __func__, bd.buffer1_size & 0xfff); 22649ab747fSPaolo Bonzini } 22749ab747fSPaolo Bonzini if ((bd.buffer2_size & 0xfff) != 0) { 22849ab747fSPaolo Bonzini DEBUGF_BRK("qemu:%s:ERROR...ERROR...ERROR... -- " 22949ab747fSPaolo Bonzini "xgmac buffer 2 len on send != 0 (0x%x)\n", 23049ab747fSPaolo Bonzini __func__, bd.buffer2_size & 0xfff); 23149ab747fSPaolo Bonzini } 23249ab747fSPaolo Bonzini if (len >= sizeof(frame)) { 23349ab747fSPaolo Bonzini DEBUGF_BRK("qemu:%s: buffer overflow %d read into %zu " 23449ab747fSPaolo Bonzini "buffer\n" , __func__, len, sizeof(frame)); 23549ab747fSPaolo Bonzini DEBUGF_BRK("qemu:%s: buffer1.size=%d; buffer2.size=%d\n", 23649ab747fSPaolo Bonzini __func__, bd.buffer1_size, bd.buffer2_size); 23749ab747fSPaolo Bonzini } 23849ab747fSPaolo Bonzini 23949ab747fSPaolo Bonzini cpu_physical_memory_read(bd.buffer1_addr, ptr, len); 24049ab747fSPaolo Bonzini ptr += len; 24149ab747fSPaolo Bonzini frame_size += len; 24249ab747fSPaolo Bonzini if (bd.ctl_stat & 0x20000000) { 24349ab747fSPaolo Bonzini /* Last buffer in frame. */ 24449ab747fSPaolo Bonzini qemu_send_packet(qemu_get_queue(s->nic), frame, len); 24549ab747fSPaolo Bonzini ptr = frame; 24649ab747fSPaolo Bonzini frame_size = 0; 24749ab747fSPaolo Bonzini s->regs[DMA_STATUS] |= DMA_STATUS_TI | DMA_STATUS_NIS; 24849ab747fSPaolo Bonzini } 24949ab747fSPaolo Bonzini bd.ctl_stat &= ~0x80000000; 25049ab747fSPaolo Bonzini /* Write back the modified descriptor. */ 25149ab747fSPaolo Bonzini xgmac_write_desc(s, &bd, 0); 25249ab747fSPaolo Bonzini } 25349ab747fSPaolo Bonzini } 25449ab747fSPaolo Bonzini 255546921eaSAndreas Färber static void enet_update_irq(XgmacState *s) 25649ab747fSPaolo Bonzini { 25749ab747fSPaolo Bonzini int stat = s->regs[DMA_STATUS] & s->regs[DMA_INTR_ENA]; 25849ab747fSPaolo Bonzini qemu_set_irq(s->sbd_irq, !!stat); 25949ab747fSPaolo Bonzini } 26049ab747fSPaolo Bonzini 26149ab747fSPaolo Bonzini static uint64_t enet_read(void *opaque, hwaddr addr, unsigned size) 26249ab747fSPaolo Bonzini { 263546921eaSAndreas Färber XgmacState *s = opaque; 26449ab747fSPaolo Bonzini uint64_t r = 0; 26549ab747fSPaolo Bonzini addr >>= 2; 26649ab747fSPaolo Bonzini 26749ab747fSPaolo Bonzini switch (addr) { 26849ab747fSPaolo Bonzini case XGMAC_VERSION: 26949ab747fSPaolo Bonzini r = 0x1012; 27049ab747fSPaolo Bonzini break; 27149ab747fSPaolo Bonzini default: 27249ab747fSPaolo Bonzini if (addr < ARRAY_SIZE(s->regs)) { 27349ab747fSPaolo Bonzini r = s->regs[addr]; 27449ab747fSPaolo Bonzini } 27549ab747fSPaolo Bonzini break; 27649ab747fSPaolo Bonzini } 27749ab747fSPaolo Bonzini return r; 27849ab747fSPaolo Bonzini } 27949ab747fSPaolo Bonzini 28049ab747fSPaolo Bonzini static void enet_write(void *opaque, hwaddr addr, 28149ab747fSPaolo Bonzini uint64_t value, unsigned size) 28249ab747fSPaolo Bonzini { 283546921eaSAndreas Färber XgmacState *s = opaque; 28449ab747fSPaolo Bonzini 28549ab747fSPaolo Bonzini addr >>= 2; 28649ab747fSPaolo Bonzini switch (addr) { 28749ab747fSPaolo Bonzini case DMA_BUS_MODE: 28849ab747fSPaolo Bonzini s->regs[DMA_BUS_MODE] = value & ~0x1; 28949ab747fSPaolo Bonzini break; 29049ab747fSPaolo Bonzini case DMA_XMT_POLL_DEMAND: 29149ab747fSPaolo Bonzini xgmac_enet_send(s); 29249ab747fSPaolo Bonzini break; 29349ab747fSPaolo Bonzini case DMA_STATUS: 29449ab747fSPaolo Bonzini s->regs[DMA_STATUS] = s->regs[DMA_STATUS] & ~value; 29549ab747fSPaolo Bonzini break; 29649ab747fSPaolo Bonzini case DMA_RCV_BASE_ADDR: 29749ab747fSPaolo Bonzini s->regs[DMA_RCV_BASE_ADDR] = s->regs[DMA_CUR_RX_DESC_ADDR] = value; 29849ab747fSPaolo Bonzini break; 29949ab747fSPaolo Bonzini case DMA_TX_BASE_ADDR: 30049ab747fSPaolo Bonzini s->regs[DMA_TX_BASE_ADDR] = s->regs[DMA_CUR_TX_DESC_ADDR] = value; 30149ab747fSPaolo Bonzini break; 30249ab747fSPaolo Bonzini default: 30349ab747fSPaolo Bonzini if (addr < ARRAY_SIZE(s->regs)) { 30449ab747fSPaolo Bonzini s->regs[addr] = value; 30549ab747fSPaolo Bonzini } 30649ab747fSPaolo Bonzini break; 30749ab747fSPaolo Bonzini } 30849ab747fSPaolo Bonzini enet_update_irq(s); 30949ab747fSPaolo Bonzini } 31049ab747fSPaolo Bonzini 31149ab747fSPaolo Bonzini static const MemoryRegionOps enet_mem_ops = { 31249ab747fSPaolo Bonzini .read = enet_read, 31349ab747fSPaolo Bonzini .write = enet_write, 31449ab747fSPaolo Bonzini .endianness = DEVICE_LITTLE_ENDIAN, 31549ab747fSPaolo Bonzini }; 31649ab747fSPaolo Bonzini 3178c8c460cSFam Zheng static int eth_can_rx(XgmacState *s) 31849ab747fSPaolo Bonzini { 31949ab747fSPaolo Bonzini /* RX enabled? */ 32049ab747fSPaolo Bonzini return s->regs[DMA_CONTROL] & DMA_CONTROL_SR; 32149ab747fSPaolo Bonzini } 32249ab747fSPaolo Bonzini 32349ab747fSPaolo Bonzini static ssize_t eth_rx(NetClientState *nc, const uint8_t *buf, size_t size) 32449ab747fSPaolo Bonzini { 325546921eaSAndreas Färber XgmacState *s = qemu_get_nic_opaque(nc); 32649ab747fSPaolo Bonzini static const unsigned char sa_bcast[6] = {0xff, 0xff, 0xff, 32749ab747fSPaolo Bonzini 0xff, 0xff, 0xff}; 32849ab747fSPaolo Bonzini int unicast, broadcast, multicast; 32949ab747fSPaolo Bonzini struct desc bd; 33049ab747fSPaolo Bonzini ssize_t ret; 33149ab747fSPaolo Bonzini 3328c8c460cSFam Zheng if (!eth_can_rx(s)) { 3338c8c460cSFam Zheng return -1; 3348c8c460cSFam Zheng } 33549ab747fSPaolo Bonzini unicast = ~buf[0] & 0x1; 33649ab747fSPaolo Bonzini broadcast = memcmp(buf, sa_bcast, 6) == 0; 33749ab747fSPaolo Bonzini multicast = !unicast && !broadcast; 33849ab747fSPaolo Bonzini if (size < 12) { 33949ab747fSPaolo Bonzini s->regs[DMA_STATUS] |= DMA_STATUS_RI | DMA_STATUS_NIS; 34049ab747fSPaolo Bonzini ret = -1; 34149ab747fSPaolo Bonzini goto out; 34249ab747fSPaolo Bonzini } 34349ab747fSPaolo Bonzini 34449ab747fSPaolo Bonzini xgmac_read_desc(s, &bd, 1); 34549ab747fSPaolo Bonzini if ((bd.ctl_stat & 0x80000000) == 0) { 34649ab747fSPaolo Bonzini s->regs[DMA_STATUS] |= DMA_STATUS_RU | DMA_STATUS_AIS; 34749ab747fSPaolo Bonzini ret = size; 34849ab747fSPaolo Bonzini goto out; 34949ab747fSPaolo Bonzini } 35049ab747fSPaolo Bonzini 35149ab747fSPaolo Bonzini cpu_physical_memory_write(bd.buffer1_addr, buf, size); 35249ab747fSPaolo Bonzini 35349ab747fSPaolo Bonzini /* Add in the 4 bytes for crc (the real hw returns length incl crc) */ 35449ab747fSPaolo Bonzini size += 4; 35549ab747fSPaolo Bonzini bd.ctl_stat = (size << 16) | 0x300; 35649ab747fSPaolo Bonzini xgmac_write_desc(s, &bd, 1); 35749ab747fSPaolo Bonzini 35849ab747fSPaolo Bonzini s->stats.rx_bytes += size; 35949ab747fSPaolo Bonzini s->stats.rx++; 36049ab747fSPaolo Bonzini if (multicast) { 36149ab747fSPaolo Bonzini s->stats.rx_mcast++; 36249ab747fSPaolo Bonzini } else if (broadcast) { 36349ab747fSPaolo Bonzini s->stats.rx_bcast++; 36449ab747fSPaolo Bonzini } 36549ab747fSPaolo Bonzini 36649ab747fSPaolo Bonzini s->regs[DMA_STATUS] |= DMA_STATUS_RI | DMA_STATUS_NIS; 36749ab747fSPaolo Bonzini ret = size; 36849ab747fSPaolo Bonzini 36949ab747fSPaolo Bonzini out: 37049ab747fSPaolo Bonzini enet_update_irq(s); 37149ab747fSPaolo Bonzini return ret; 37249ab747fSPaolo Bonzini } 37349ab747fSPaolo Bonzini 37449ab747fSPaolo Bonzini static NetClientInfo net_xgmac_enet_info = { 375f394b2e2SEric Blake .type = NET_CLIENT_DRIVER_NIC, 37649ab747fSPaolo Bonzini .size = sizeof(NICState), 37749ab747fSPaolo Bonzini .receive = eth_rx, 37849ab747fSPaolo Bonzini }; 37949ab747fSPaolo Bonzini 3808fa922c2SCédric Le Goater static void xgmac_enet_realize(DeviceState *dev, Error **errp) 38149ab747fSPaolo Bonzini { 3828fa922c2SCédric Le Goater SysBusDevice *sbd = SYS_BUS_DEVICE(dev); 383546921eaSAndreas Färber XgmacState *s = XGMAC(dev); 38449ab747fSPaolo Bonzini 385eedfac6fSPaolo Bonzini memory_region_init_io(&s->iomem, OBJECT(s), &enet_mem_ops, s, 386eedfac6fSPaolo Bonzini "xgmac", 0x1000); 387546921eaSAndreas Färber sysbus_init_mmio(sbd, &s->iomem); 388546921eaSAndreas Färber sysbus_init_irq(sbd, &s->sbd_irq); 389546921eaSAndreas Färber sysbus_init_irq(sbd, &s->pmt_irq); 390546921eaSAndreas Färber sysbus_init_irq(sbd, &s->mci_irq); 39149ab747fSPaolo Bonzini 39249ab747fSPaolo Bonzini qemu_macaddr_default_if_unset(&s->conf.macaddr); 39349ab747fSPaolo Bonzini s->nic = qemu_new_nic(&net_xgmac_enet_info, &s->conf, 394546921eaSAndreas Färber object_get_typename(OBJECT(dev)), dev->id, s); 39549ab747fSPaolo Bonzini qemu_format_nic_info_str(qemu_get_queue(s->nic), s->conf.macaddr.a); 39649ab747fSPaolo Bonzini 39749ab747fSPaolo Bonzini s->regs[XGMAC_ADDR_HIGH(0)] = (s->conf.macaddr.a[5] << 8) | 39849ab747fSPaolo Bonzini s->conf.macaddr.a[4]; 39949ab747fSPaolo Bonzini s->regs[XGMAC_ADDR_LOW(0)] = (s->conf.macaddr.a[3] << 24) | 40049ab747fSPaolo Bonzini (s->conf.macaddr.a[2] << 16) | 40149ab747fSPaolo Bonzini (s->conf.macaddr.a[1] << 8) | 40249ab747fSPaolo Bonzini s->conf.macaddr.a[0]; 40349ab747fSPaolo Bonzini } 40449ab747fSPaolo Bonzini 40549ab747fSPaolo Bonzini static Property xgmac_properties[] = { 406546921eaSAndreas Färber DEFINE_NIC_PROPERTIES(XgmacState, conf), 40749ab747fSPaolo Bonzini DEFINE_PROP_END_OF_LIST(), 40849ab747fSPaolo Bonzini }; 40949ab747fSPaolo Bonzini 41049ab747fSPaolo Bonzini static void xgmac_enet_class_init(ObjectClass *klass, void *data) 41149ab747fSPaolo Bonzini { 41249ab747fSPaolo Bonzini DeviceClass *dc = DEVICE_CLASS(klass); 41349ab747fSPaolo Bonzini 4148fa922c2SCédric Le Goater dc->realize = xgmac_enet_realize; 41549ab747fSPaolo Bonzini dc->vmsd = &vmstate_xgmac; 41649ab747fSPaolo Bonzini dc->props = xgmac_properties; 41749ab747fSPaolo Bonzini } 41849ab747fSPaolo Bonzini 41949ab747fSPaolo Bonzini static const TypeInfo xgmac_enet_info = { 420546921eaSAndreas Färber .name = TYPE_XGMAC, 42149ab747fSPaolo Bonzini .parent = TYPE_SYS_BUS_DEVICE, 422546921eaSAndreas Färber .instance_size = sizeof(XgmacState), 42349ab747fSPaolo Bonzini .class_init = xgmac_enet_class_init, 42449ab747fSPaolo Bonzini }; 42549ab747fSPaolo Bonzini 42649ab747fSPaolo Bonzini static void xgmac_enet_register_types(void) 42749ab747fSPaolo Bonzini { 42849ab747fSPaolo Bonzini type_register_static(&xgmac_enet_info); 42949ab747fSPaolo Bonzini } 43049ab747fSPaolo Bonzini 43149ab747fSPaolo Bonzini type_init(xgmac_enet_register_types) 432