diff options
Diffstat (limited to 'hw')
-rw-r--r-- | hw/milkymist-hw.h | 20 | ||||
-rw-r--r-- | hw/milkymist-minimac2.c (renamed from hw/milkymist-minimac.c) | 297 | ||||
-rw-r--r-- | hw/milkymist.c | 2 |
3 files changed, 155 insertions, 164 deletions
diff --git a/hw/milkymist-hw.h b/hw/milkymist-hw.h index 15acdbccd6..20de68ecce 100644 --- a/hw/milkymist-hw.h +++ b/hw/milkymist-hw.h @@ -1,6 +1,9 @@ #ifndef QEMU_HW_MILKYMIST_H #define QEMU_HW_MILKYMIST_H +#include "qdev.h" +#include "qdev-addr.h" + static inline DeviceState *milkymist_uart_create(target_phys_addr_t base, qemu_irq rx_irq, qemu_irq tx_irq) { @@ -183,6 +186,23 @@ static inline DeviceState *milkymist_minimac_create(target_phys_addr_t base, return dev; } +static inline DeviceState *milkymist_minimac2_create(target_phys_addr_t base, + target_phys_addr_t buffers_base, qemu_irq rx_irq, qemu_irq tx_irq) +{ + DeviceState *dev; + + qemu_check_nic_model(&nd_table[0], "minimac2"); + dev = qdev_create(NULL, "milkymist-minimac2"); + qdev_prop_set_taddr(dev, "buffers_base", buffers_base); + qdev_set_nic_properties(dev, &nd_table[0]); + qdev_init_nofail(dev); + sysbus_mmio_map(sysbus_from_qdev(dev), 0, base); + sysbus_connect_irq(sysbus_from_qdev(dev), 0, rx_irq); + sysbus_connect_irq(sysbus_from_qdev(dev), 1, tx_irq); + + return dev; +} + static inline DeviceState *milkymist_softusb_create(target_phys_addr_t base, qemu_irq irq, uint32_t pmem_base, uint32_t pmem_size, uint32_t dmem_base, uint32_t dmem_size) diff --git a/hw/milkymist-minimac.c b/hw/milkymist-minimac2.c index b07f18d8a7..c4e28187b3 100644 --- a/hw/milkymist-minimac.c +++ b/hw/milkymist-minimac2.c @@ -1,7 +1,7 @@ /* - * QEMU model of the Milkymist minimac block. + * QEMU model of the Milkymist minimac2 block. * - * Copyright (c) 2010 Michael Walle <michael@walle.cc> + * Copyright (c) 2011 Michael Walle <michael@walle.cc> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public @@ -18,7 +18,7 @@ * * * Specification available at: - * http://www.milkymist.org/socdoc/minimac.pdf + * not available yet * */ @@ -27,6 +27,7 @@ #include "trace.h" #include "net.h" #include "qemu-error.h" +#include "qdev-addr.h" #include <zlib.h> @@ -34,25 +35,15 @@ enum { R_SETUP = 0, R_MDIO, R_STATE0, - R_ADDR0, R_COUNT0, R_STATE1, - R_ADDR1, R_COUNT1, - R_STATE2, - R_ADDR2, - R_COUNT2, - R_STATE3, - R_ADDR3, - R_COUNT3, - R_TXADDR, R_TXCOUNT, R_MAX }; enum { - SETUP_RX_RST = (1<<0), - SETUP_TX_RST = (1<<2), + SETUP_PHY_RST = (1<<0), }; enum { @@ -85,9 +76,10 @@ enum { R_PHY_MAX = 32 }; -#define MINIMAC_MTU 1530 +#define MINIMAC2_MTU 1530 +#define MINIMAC2_BUFFER_SIZE 2048 -struct MilkymistMinimacMdioState { +struct MilkymistMinimac2MdioState { int last_clk; int count; uint32_t data; @@ -97,50 +89,55 @@ struct MilkymistMinimacMdioState { uint8_t phy_addr; uint8_t reg_addr; }; -typedef struct MilkymistMinimacMdioState MilkymistMinimacMdioState; +typedef struct MilkymistMinimac2MdioState MilkymistMinimac2MdioState; -struct MilkymistMinimacState { +struct MilkymistMinimac2State { SysBusDevice busdev; NICState *nic; NICConf conf; char *phy_model; + target_phys_addr_t buffers_base; qemu_irq rx_irq; qemu_irq tx_irq; uint32_t regs[R_MAX]; - MilkymistMinimacMdioState mdio; + MilkymistMinimac2MdioState mdio; uint16_t phy_regs[R_PHY_MAX]; + + uint8_t *rx0_buf; + uint8_t *rx1_buf; + uint8_t *tx_buf; }; -typedef struct MilkymistMinimacState MilkymistMinimacState; +typedef struct MilkymistMinimac2State MilkymistMinimac2State; static const uint8_t preamble_sfd[] = { 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xd5 }; -static void minimac_mdio_write_reg(MilkymistMinimacState *s, +static void minimac2_mdio_write_reg(MilkymistMinimac2State *s, uint8_t phy_addr, uint8_t reg_addr, uint16_t value) { - trace_milkymist_minimac_mdio_write(phy_addr, reg_addr, value); + trace_milkymist_minimac2_mdio_write(phy_addr, reg_addr, value); /* nop */ } -static uint16_t minimac_mdio_read_reg(MilkymistMinimacState *s, +static uint16_t minimac2_mdio_read_reg(MilkymistMinimac2State *s, uint8_t phy_addr, uint8_t reg_addr) { uint16_t r = s->phy_regs[reg_addr]; - trace_milkymist_minimac_mdio_read(phy_addr, reg_addr, r); + trace_milkymist_minimac2_mdio_read(phy_addr, reg_addr, r); return r; } -static void minimac_update_mdio(MilkymistMinimacState *s) +static void minimac2_update_mdio(MilkymistMinimac2State *s) { - MilkymistMinimacMdioState *m = &s->mdio; + MilkymistMinimac2MdioState *m = &s->mdio; /* detect rising clk edge */ if (m->last_clk == 0 && (s->regs[R_MDIO] & MDIO_CLK)) { @@ -173,7 +170,7 @@ static void minimac_update_mdio(MilkymistMinimacState *s) } if (m->state == MDIO_STATE_READING) { - m->data_out = minimac_mdio_read_reg(s, m->phy_addr, + m->data_out = minimac2_mdio_read_reg(s, m->phy_addr, m->reg_addr); } } @@ -192,7 +189,7 @@ static void minimac_update_mdio(MilkymistMinimacState *s) if (m->count == 0 && m->state) { if (m->state == MDIO_STATE_WRITING) { uint16_t data = m->data & 0xffff; - minimac_mdio_write_reg(s, m->phy_addr, m->reg_addr, data); + minimac2_mdio_write_reg(s, m->phy_addr, m->reg_addr, data); } m->state = MDIO_STATE_IDLE; } @@ -208,7 +205,7 @@ static size_t assemble_frame(uint8_t *buf, size_t size, uint32_t crc; if (size < payload_size + 12) { - error_report("milkymist_minimac: received too big ethernet frame"); + error_report("milkymist_minimac2: received too big ethernet frame"); return 0; } @@ -231,115 +228,102 @@ static size_t assemble_frame(uint8_t *buf, size_t size, return payload_size + 12; } -static void minimac_tx(MilkymistMinimacState *s) +static void minimac2_tx(MilkymistMinimac2State *s) { - uint8_t buf[MINIMAC_MTU]; uint32_t txcount = s->regs[R_TXCOUNT]; - - /* do nothing if transmission logic is in reset */ - if (s->regs[R_SETUP] & SETUP_TX_RST) { - return; - } + uint8_t *buf = s->tx_buf; if (txcount < 64) { - error_report("milkymist_minimac: ethernet frame too small (%u < %u)\n", + error_report("milkymist_minimac2: ethernet frame too small (%u < %u)\n", txcount, 64); - return; + goto err; } - if (txcount > MINIMAC_MTU) { - error_report("milkymist_minimac: MTU exceeded (%u > %u)\n", - txcount, MINIMAC_MTU); - return; + if (txcount > MINIMAC2_MTU) { + error_report("milkymist_minimac2: MTU exceeded (%u > %u)\n", + txcount, MINIMAC2_MTU); + goto err; } - /* dma */ - cpu_physical_memory_read(s->regs[R_TXADDR], buf, txcount); - if (memcmp(buf, preamble_sfd, 8) != 0) { - error_report("milkymist_minimac: frame doesn't contain the preamble " + error_report("milkymist_minimac2: frame doesn't contain the preamble " "and/or the SFD (%02x %02x %02x %02x %02x %02x %02x %02x)\n", buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7]); - return; + goto err; } - trace_milkymist_minimac_tx_frame(txcount - 12); + trace_milkymist_minimac2_tx_frame(txcount - 12); /* send packet, skipping preamble and sfd */ qemu_send_packet_raw(&s->nic->nc, buf + 8, txcount - 12); s->regs[R_TXCOUNT] = 0; - trace_milkymist_minimac_pulse_irq_tx(); +err: + trace_milkymist_minimac2_pulse_irq_tx(); qemu_irq_pulse(s->tx_irq); } -static ssize_t minimac_rx(VLANClientState *nc, const uint8_t *buf, size_t size) +static void update_rx_interrupt(MilkymistMinimac2State *s) +{ + if (s->regs[R_STATE0] == STATE_PENDING + || s->regs[R_STATE1] == STATE_PENDING) { + trace_milkymist_minimac2_raise_irq_rx(); + qemu_irq_raise(s->rx_irq); + } else { + trace_milkymist_minimac2_lower_irq_rx(); + qemu_irq_lower(s->rx_irq); + } +} + +static ssize_t minimac2_rx(VLANClientState *nc, const uint8_t *buf, size_t size) { - MilkymistMinimacState *s = DO_UPCAST(NICState, nc, nc)->opaque; + MilkymistMinimac2State *s = DO_UPCAST(NICState, nc, nc)->opaque; - uint32_t r_addr; uint32_t r_count; uint32_t r_state; + uint8_t *rx_buf; - uint8_t frame_buf[MINIMAC_MTU]; size_t frame_size; - trace_milkymist_minimac_rx_frame(buf, size); - - /* discard frames if nic is in reset */ - if (s->regs[R_SETUP] & SETUP_RX_RST) { - return size; - } + trace_milkymist_minimac2_rx_frame(buf, size); /* choose appropriate slot */ if (s->regs[R_STATE0] == STATE_LOADED) { - r_addr = R_ADDR0; r_count = R_COUNT0; r_state = R_STATE0; + rx_buf = s->rx0_buf; } else if (s->regs[R_STATE1] == STATE_LOADED) { - r_addr = R_ADDR1; r_count = R_COUNT1; r_state = R_STATE1; - } else if (s->regs[R_STATE2] == STATE_LOADED) { - r_addr = R_ADDR2; - r_count = R_COUNT2; - r_state = R_STATE2; - } else if (s->regs[R_STATE3] == STATE_LOADED) { - r_addr = R_ADDR3; - r_count = R_COUNT3; - r_state = R_STATE3; + rx_buf = s->rx1_buf; } else { - trace_milkymist_minimac_drop_rx_frame(buf); + trace_milkymist_minimac2_drop_rx_frame(buf); return size; } /* assemble frame */ - frame_size = assemble_frame(frame_buf, sizeof(frame_buf), buf, size); + frame_size = assemble_frame(rx_buf, MINIMAC2_BUFFER_SIZE, buf, size); if (frame_size == 0) { return size; } - trace_milkymist_minimac_rx_transfer(buf, frame_size); - - /* do dma */ - cpu_physical_memory_write(s->regs[r_addr], frame_buf, frame_size); + trace_milkymist_minimac2_rx_transfer(rx_buf, frame_size); /* update slot */ s->regs[r_count] = frame_size; s->regs[r_state] = STATE_PENDING; - trace_milkymist_minimac_pulse_irq_rx(); - qemu_irq_pulse(s->rx_irq); + update_rx_interrupt(s); return size; } static uint32_t -minimac_read(void *opaque, target_phys_addr_t addr) +minimac2_read(void *opaque, target_phys_addr_t addr) { - MilkymistMinimacState *s = opaque; + MilkymistMinimac2State *s = opaque; uint32_t r = 0; addr >>= 2; @@ -347,39 +331,30 @@ minimac_read(void *opaque, target_phys_addr_t addr) case R_SETUP: case R_MDIO: case R_STATE0: - case R_ADDR0: case R_COUNT0: case R_STATE1: - case R_ADDR1: case R_COUNT1: - case R_STATE2: - case R_ADDR2: - case R_COUNT2: - case R_STATE3: - case R_ADDR3: - case R_COUNT3: - case R_TXADDR: case R_TXCOUNT: r = s->regs[addr]; break; default: - error_report("milkymist_minimac: read access to unknown register 0x" + error_report("milkymist_minimac2: read access to unknown register 0x" TARGET_FMT_plx, addr << 2); break; } - trace_milkymist_minimac_memory_read(addr << 2, r); + trace_milkymist_minimac2_memory_read(addr << 2, r); return r; } static void -minimac_write(void *opaque, target_phys_addr_t addr, uint32_t value) +minimac2_write(void *opaque, target_phys_addr_t addr, uint32_t value) { - MilkymistMinimacState *s = opaque; + MilkymistMinimac2State *s = opaque; - trace_milkymist_minimac_memory_read(addr, value); + trace_milkymist_minimac2_memory_read(addr, value); addr >>= 2; switch (addr) { @@ -394,58 +369,47 @@ minimac_write(void *opaque, target_phys_addr_t addr, uint32_t value) s->regs[R_MDIO] &= ~mdio_di; } - minimac_update_mdio(s); + minimac2_update_mdio(s); } break; case R_TXCOUNT: s->regs[addr] = value; if (value > 0) { - minimac_tx(s); + minimac2_tx(s); } break; - case R_SETUP: case R_STATE0: - case R_ADDR0: - case R_COUNT0: case R_STATE1: - case R_ADDR1: + s->regs[addr] = value; + update_rx_interrupt(s); + break; + case R_SETUP: + case R_COUNT0: case R_COUNT1: - case R_STATE2: - case R_ADDR2: - case R_COUNT2: - case R_STATE3: - case R_ADDR3: - case R_COUNT3: - case R_TXADDR: s->regs[addr] = value; break; default: - error_report("milkymist_minimac: write access to unknown register 0x" + error_report("milkymist_minimac2: write access to unknown register 0x" TARGET_FMT_plx, addr << 2); break; } } -static CPUReadMemoryFunc * const minimac_read_fn[] = { +static CPUReadMemoryFunc * const minimac2_read_fn[] = { NULL, NULL, - &minimac_read, + &minimac2_read, }; -static CPUWriteMemoryFunc * const minimac_write_fn[] = { +static CPUWriteMemoryFunc * const minimac2_write_fn[] = { NULL, NULL, - &minimac_write, + &minimac2_write, }; -static int minimac_can_rx(VLANClientState *nc) +static int minimac2_can_rx(VLANClientState *nc) { - MilkymistMinimacState *s = DO_UPCAST(NICState, nc, nc)->opaque; - - /* discard frames if nic is in reset */ - if (s->regs[R_SETUP] & SETUP_RX_RST) { - return 1; - } + MilkymistMinimac2State *s = DO_UPCAST(NICState, nc, nc)->opaque; if (s->regs[R_STATE0] == STATE_LOADED) { return 1; @@ -453,27 +417,21 @@ static int minimac_can_rx(VLANClientState *nc) if (s->regs[R_STATE1] == STATE_LOADED) { return 1; } - if (s->regs[R_STATE2] == STATE_LOADED) { - return 1; - } - if (s->regs[R_STATE3] == STATE_LOADED) { - return 1; - } return 0; } -static void minimac_cleanup(VLANClientState *nc) +static void minimac2_cleanup(VLANClientState *nc) { - MilkymistMinimacState *s = DO_UPCAST(NICState, nc, nc)->opaque; + MilkymistMinimac2State *s = DO_UPCAST(NICState, nc, nc)->opaque; s->nic = NULL; } -static void milkymist_minimac_reset(DeviceState *d) +static void milkymist_minimac2_reset(DeviceState *d) { - MilkymistMinimacState *s = - container_of(d, MilkymistMinimacState, busdev.qdev); + MilkymistMinimac2State *s = + container_of(d, MilkymistMinimac2State, busdev.qdev); int i; for (i = 0; i < R_MAX; i++) { @@ -488,81 +446,94 @@ static void milkymist_minimac_reset(DeviceState *d) s->phy_regs[R_PHY_ID2] = 0x161a; } -static NetClientInfo net_milkymist_minimac_info = { +static NetClientInfo net_milkymist_minimac2_info = { .type = NET_CLIENT_TYPE_NIC, .size = sizeof(NICState), - .can_receive = minimac_can_rx, - .receive = minimac_rx, - .cleanup = minimac_cleanup, + .can_receive = minimac2_can_rx, + .receive = minimac2_rx, + .cleanup = minimac2_cleanup, }; -static int milkymist_minimac_init(SysBusDevice *dev) +static int milkymist_minimac2_init(SysBusDevice *dev) { - MilkymistMinimacState *s = FROM_SYSBUS(typeof(*s), dev); + MilkymistMinimac2State *s = FROM_SYSBUS(typeof(*s), dev); int regs; + ram_addr_t buffers; + size_t buffers_size = TARGET_PAGE_ALIGN(3 * MINIMAC2_BUFFER_SIZE); sysbus_init_irq(dev, &s->rx_irq); sysbus_init_irq(dev, &s->tx_irq); - regs = cpu_register_io_memory(minimac_read_fn, minimac_write_fn, s, + regs = cpu_register_io_memory(minimac2_read_fn, minimac2_write_fn, s, DEVICE_NATIVE_ENDIAN); sysbus_init_mmio(dev, R_MAX * 4, regs); + /* register buffers memory */ + buffers = qemu_ram_alloc(NULL, "milkymist_minimac2.buffers", buffers_size); + s->rx0_buf = qemu_get_ram_ptr(buffers); + s->rx1_buf = s->rx0_buf + MINIMAC2_BUFFER_SIZE; + s->tx_buf = s->rx1_buf + MINIMAC2_BUFFER_SIZE; + + cpu_register_physical_memory(s->buffers_base, buffers_size, + buffers | IO_MEM_RAM); + qemu_macaddr_default_if_unset(&s->conf.macaddr); - s->nic = qemu_new_nic(&net_milkymist_minimac_info, &s->conf, + s->nic = qemu_new_nic(&net_milkymist_minimac2_info, &s->conf, dev->qdev.info->name, dev->qdev.id, s); qemu_format_nic_info_str(&s->nic->nc, s->conf.macaddr.a); return 0; } -static const VMStateDescription vmstate_milkymist_minimac_mdio = { - .name = "milkymist_minimac_mdio", +static const VMStateDescription vmstate_milkymist_minimac2_mdio = { + .name = "milkymist-minimac2-mdio", .version_id = 1, .minimum_version_id = 1, .minimum_version_id_old = 1, .fields = (VMStateField[]) { - VMSTATE_INT32(last_clk, MilkymistMinimacMdioState), - VMSTATE_INT32(count, MilkymistMinimacMdioState), - VMSTATE_UINT32(data, MilkymistMinimacMdioState), - VMSTATE_UINT16(data_out, MilkymistMinimacMdioState), - VMSTATE_INT32(state, MilkymistMinimacMdioState), - VMSTATE_UINT8(phy_addr, MilkymistMinimacMdioState), - VMSTATE_UINT8(reg_addr, MilkymistMinimacMdioState), + VMSTATE_INT32(last_clk, MilkymistMinimac2MdioState), + VMSTATE_INT32(count, MilkymistMinimac2MdioState), + VMSTATE_UINT32(data, MilkymistMinimac2MdioState), + VMSTATE_UINT16(data_out, MilkymistMinimac2MdioState), + VMSTATE_INT32(state, MilkymistMinimac2MdioState), + VMSTATE_UINT8(phy_addr, MilkymistMinimac2MdioState), + VMSTATE_UINT8(reg_addr, MilkymistMinimac2MdioState), VMSTATE_END_OF_LIST() } }; -static const VMStateDescription vmstate_milkymist_minimac = { - .name = "milkymist-minimac", +static const VMStateDescription vmstate_milkymist_minimac2 = { + .name = "milkymist-minimac2", .version_id = 1, .minimum_version_id = 1, .minimum_version_id_old = 1, .fields = (VMStateField[]) { - VMSTATE_UINT32_ARRAY(regs, MilkymistMinimacState, R_MAX), - VMSTATE_UINT16_ARRAY(phy_regs, MilkymistMinimacState, R_PHY_MAX), - VMSTATE_STRUCT(mdio, MilkymistMinimacState, 0, - vmstate_milkymist_minimac_mdio, MilkymistMinimacMdioState), + VMSTATE_UINT32_ARRAY(regs, MilkymistMinimac2State, R_MAX), + VMSTATE_UINT16_ARRAY(phy_regs, MilkymistMinimac2State, R_PHY_MAX), + VMSTATE_STRUCT(mdio, MilkymistMinimac2State, 0, + vmstate_milkymist_minimac2_mdio, MilkymistMinimac2MdioState), VMSTATE_END_OF_LIST() } }; -static SysBusDeviceInfo milkymist_minimac_info = { - .init = milkymist_minimac_init, - .qdev.name = "milkymist-minimac", - .qdev.size = sizeof(MilkymistMinimacState), - .qdev.vmsd = &vmstate_milkymist_minimac, - .qdev.reset = milkymist_minimac_reset, +static SysBusDeviceInfo milkymist_minimac2_info = { + .init = milkymist_minimac2_init, + .qdev.name = "milkymist-minimac2", + .qdev.size = sizeof(MilkymistMinimac2State), + .qdev.vmsd = &vmstate_milkymist_minimac2, + .qdev.reset = milkymist_minimac2_reset, .qdev.props = (Property[]) { - DEFINE_NIC_PROPERTIES(MilkymistMinimacState, conf), - DEFINE_PROP_STRING("phy_model", MilkymistMinimacState, phy_model), + DEFINE_PROP_TADDR("buffers_base", MilkymistMinimac2State, + buffers_base, 0), + DEFINE_NIC_PROPERTIES(MilkymistMinimac2State, conf), + DEFINE_PROP_STRING("phy_model", MilkymistMinimac2State, phy_model), DEFINE_PROP_END_OF_LIST(), } }; -static void milkymist_minimac_register(void) +static void milkymist_minimac2_register(void) { - sysbus_register_withprop(&milkymist_minimac_info); + sysbus_register_withprop(&milkymist_minimac2_info); } -device_init(milkymist_minimac_register) +device_init(milkymist_minimac2_register) diff --git a/hw/milkymist.c b/hw/milkymist.c index 8defad8024..787984040f 100644 --- a/hw/milkymist.c +++ b/hw/milkymist.c @@ -156,7 +156,7 @@ milkymist_init(ram_addr_t ram_size_not_used, milkymist_ac97_create(0x60005000, irq[5], irq[6], irq[7], irq[8]); milkymist_pfpu_create(0x60006000, irq[9]); milkymist_tmu2_create(0x60007000, irq[10]); - milkymist_minimac_create(0x60008000, irq[11], irq[12]); + milkymist_minimac2_create(0x60008000, 0x30000000, irq[11], irq[12]); milkymist_softusb_create(0x6000f000, irq[17], 0x20000000, 0x1000, 0x20020000, 0x2000); |