diff options
Diffstat (limited to 'hw/net')
| -rw-r--r-- | hw/net/cadence_gem.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/hw/net/cadence_gem.c b/hw/net/cadence_gem.c index 2e273dca18..fd3e4a8cd6 100644 --- a/hw/net/cadence_gem.c +++ b/hw/net/cadence_gem.c @@ -845,6 +845,35 @@ static int get_queue_from_screen(CadenceGEMState *s, uint8_t *rxbuf_ptr, return 0; } +static uint32_t gem_get_queue_base_addr(CadenceGEMState *s, bool tx, int q) +{ + uint32_t base_addr = 0; + + switch (q) { + case 0: + base_addr = s->regs[tx ? GEM_TXQBASE : GEM_RXQBASE]; + break; + case 1 ... (MAX_PRIORITY_QUEUES - 1): + base_addr = s->regs[(tx ? GEM_TRANSMIT_Q1_PTR : + GEM_RECEIVE_Q1_PTR) + q - 1]; + break; + default: + g_assert_not_reached(); + }; + + return base_addr; +} + +static inline uint32_t gem_get_tx_queue_base_addr(CadenceGEMState *s, int q) +{ + return gem_get_queue_base_addr(s, true, q); +} + +static inline uint32_t gem_get_rx_queue_base_addr(CadenceGEMState *s, int q) +{ + return gem_get_queue_base_addr(s, false, q); +} + static hwaddr gem_get_desc_addr(CadenceGEMState *s, bool tx, int q) { hwaddr desc_addr = 0; @@ -1043,7 +1072,7 @@ static ssize_t gem_receive(NetClientState *nc, const uint8_t *buf, size_t size) /* Next descriptor */ if (rx_desc_get_wrap(s->rx_desc[q])) { DB_PRINT("wrapping RX descriptor list\n"); - s->rx_desc_addr[q] = s->regs[GEM_RXQBASE]; + s->rx_desc_addr[q] = gem_get_rx_queue_base_addr(s, q); } else { DB_PRINT("incrementing RX descriptor list\n"); s->rx_desc_addr[q] += 4 * gem_get_desc_len(s, true); @@ -1199,7 +1228,7 @@ static void gem_transmit(CadenceGEMState *s) sizeof(desc_first)); /* Advance the hardware current descriptor past this packet */ if (tx_desc_get_wrap(desc)) { - s->tx_desc_addr[q] = s->regs[GEM_TXQBASE]; + s->tx_desc_addr[q] = gem_get_tx_queue_base_addr(s, q); } else { s->tx_desc_addr[q] = packet_desc_addr + 4 * gem_get_desc_len(s, false); @@ -1251,7 +1280,7 @@ static void gem_transmit(CadenceGEMState *s) } else { packet_desc_addr = 0; } - packet_desc_addr |= s->regs[GEM_TXQBASE]; + packet_desc_addr |= gem_get_tx_queue_base_addr(s, q); } else { packet_desc_addr += 4 * gem_get_desc_len(s, false); } @@ -1457,7 +1486,7 @@ static void gem_write(void *opaque, hwaddr offset, uint64_t val, if (!(val & GEM_NWCTRL_TXENA)) { /* Reset to start of Q when transmit disabled. */ for (i = 0; i < s->num_priority_queues; i++) { - s->tx_desc_addr[i] = s->regs[GEM_TXQBASE]; + s->tx_desc_addr[i] = gem_get_tx_queue_base_addr(s, i); } } if (gem_can_receive(qemu_get_queue(s->nic))) { |