diff options
Diffstat (limited to 'hw/eepro100.c')
| -rw-r--r-- | hw/eepro100.c | 52 |
1 files changed, 33 insertions, 19 deletions
diff --git a/hw/eepro100.c b/hw/eepro100.c index d5d3abc93c..a58c640573 100644 --- a/hw/eepro100.c +++ b/hw/eepro100.c @@ -172,6 +172,20 @@ typedef struct { char packet[MAX_ETH_FRAME_SIZE + 4]; } eepro100_rx_t; +typedef enum { + COMMAND_EL = BIT(15), + COMMAND_S = BIT(14), + COMMAND_I = BIT(13), + COMMAND_NC = BIT(4), + COMMAND_SF = BIT(3), + COMMAND_CMD = BITS(2, 0), +} scb_command_bit; + +typedef enum { + STATUS_C = BIT(15), + STATUS_OK = BIT(13), +} scb_status_bit; + typedef struct { uint32_t tx_good_frames, tx_max_collisions, tx_late_collisions, tx_underruns, tx_lost_crs, tx_deferred, tx_single_collisions, @@ -753,22 +767,22 @@ enum commands { static cu_state_t get_cu_state(EEPRO100State * s) { - return ((s->mem[SCBStatus] >> 6) & 0x03); + return ((s->mem[SCBStatus] & BITS(7, 6)) >> 6); } static void set_cu_state(EEPRO100State * s, cu_state_t state) { - s->mem[SCBStatus] = (s->mem[SCBStatus] & 0x3f) + (state << 6); + s->mem[SCBStatus] = (s->mem[SCBStatus] & ~BITS(7, 6)) + (state << 6); } static ru_state_t get_ru_state(EEPRO100State * s) { - return ((s->mem[SCBStatus] >> 2) & 0x0f); + return ((s->mem[SCBStatus] & BITS(5, 2)) >> 2); } static void set_ru_state(EEPRO100State * s, ru_state_t state) { - s->mem[SCBStatus] = (s->mem[SCBStatus] & 0xc3) + (state << 2); + s->mem[SCBStatus] = (s->mem[SCBStatus] & ~BITS(5, 2)) + (state << 2); } static void dump_statistics(EEPRO100State * s) @@ -898,13 +912,13 @@ static void action_command(EEPRO100State *s) uint16_t command = le16_to_cpu(s->tx.command); logout("val=(cu start), status=0x%04x, command=0x%04x, link=0x%08x\n", status, command, s->tx.link); - bool bit_el = ((command & 0x8000) != 0); - bool bit_s = ((command & 0x4000) != 0); - bool bit_i = ((command & 0x2000) != 0); - bool bit_nc = ((command & 0x0010) != 0); + bool bit_el = ((command & COMMAND_EL) != 0); + bool bit_s = ((command & COMMAND_S) != 0); + bool bit_i = ((command & COMMAND_I) != 0); + bool bit_nc = ((command & COMMAND_NC) != 0); bool success = true; - //~ bool bit_sf = ((command & 0x0008) != 0); - uint16_t cmd = command & 0x0007; + //~ bool bit_sf = ((command & COMMAND_SF) != 0); + uint16_t cmd = command & COMMAND_CMD; s->cu_offset = le32_to_cpu(s->tx.link); switch (cmd) { case CmdNOp: @@ -941,7 +955,7 @@ static void action_command(EEPRO100State *s) break; } /* Write new status. */ - stw_phys(s->cb_address, status | 0x8000 | (success ? 0x2000 : 0)); + stw_phys(s->cb_address, status | STATUS_C | (success ? STATUS_OK : 0)); if (bit_i) { /* CU completed action. */ eepro100_cx_interrupt(s); @@ -1684,13 +1698,13 @@ static ssize_t nic_receive(VLANClientState *nc, const uint8_t * buf, size_t size /* CSMA is disabled. */ logout("%p received while CSMA is disabled\n", s); return -1; - } else if (size < 64 && (s->configuration[7] & 1)) { + } else if (size < 64 && (s->configuration[7] & BIT(0))) { /* Short frame and configuration byte 7/0 (discard short receive) set: * Short frame is discarded */ logout("%p received short frame (%zu byte)\n", s, size); s->statistics.rx_short_frame_errors++; //~ return -1; - } else if ((size > MAX_ETH_FRAME_SIZE + 4) && !(s->configuration[18] & 8)) { + } else if ((size > MAX_ETH_FRAME_SIZE + 4) && !(s->configuration[18] & BIT(3))) { /* Long frame and configuration byte 18/3 (long receive ok) not set: * Long frames are discarded. */ logout("%p received long frame (%zu byte), ignored\n", s, size); @@ -1713,7 +1727,7 @@ static ssize_t nic_receive(VLANClientState *nc, const uint8_t * buf, size_t size assert(mcast_idx < 64); if (s->mult[mcast_idx >> 3] & (1 << (mcast_idx & 7))) { /* Multicast frame is allowed in hash table. */ - } else if (s->configuration[15] & 1) { + } else if (s->configuration[15] & BIT(0)) { /* Promiscuous: receive all. */ rfd_status |= 0x0004; } else { @@ -1723,7 +1737,7 @@ static ssize_t nic_receive(VLANClientState *nc, const uint8_t * buf, size_t size } /* TODO: Next not for promiscuous mode? */ rfd_status |= 0x0002; - } else if (s->configuration[15] & 1) { + } else if (s->configuration[15] & BIT(0)) { /* Promiscuous: receive all. */ TRACE(RXTX, logout("%p received frame in promiscuous mode, len=%zu\n", s, size)); rfd_status |= 0x0004; @@ -1764,23 +1778,23 @@ static ssize_t nic_receive(VLANClientState *nc, const uint8_t * buf, size_t size /* Early receive interrupt not supported. */ //~ eepro100_er_interrupt(s); /* Receive CRC Transfer not supported. */ - if (s->configuration[18] & 4) { + if (s->configuration[18] & BIT(2)) { missing("Receive CRC Transfer"); return -1; } /* TODO: check stripping enable bit. */ - //~ assert(!(s->configuration[17] & 1)); + //~ assert(!(s->configuration[17] & BIT(0))); cpu_physical_memory_write(s->ru_base + s->ru_offset + offsetof(eepro100_rx_t, packet), buf, size); s->statistics.rx_good_frames++; eepro100_fr_interrupt(s); s->ru_offset = le32_to_cpu(rx.link); - if (rfd_command & 0x8000) { + if (rfd_command & COMMAND_EL) { /* EL bit is set, so this was the last frame. */ logout("receive: Running out of frames\n"); set_ru_state(s, ru_suspended); } - if (rfd_command & 0x4000) { + if (rfd_command & COMMAND_S) { /* S bit is set. */ set_ru_state(s, ru_suspended); } |