ShuriZma
/
xemu
mirror of https://github.com/xemu-project/xemu.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

nvnet: don't trigger interrupt if no packets are sent

This commit is contained in:
Matt Borgerson 2018-09-02 15:43:36 -07:00 committed by Jannik Vogel
parent c01c27d968
commit 5246cad0c1
1 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
hw/xbox/nvnet.c
View File

@ -28,6 +28,7 @@
#define IOPORT_SIZE 0x8
#define MMIO_SIZE 0x400
// #define DEBUG
#ifdef DEBUG
# define NVNET_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
# define NVNET_DUMP_PACKETS_TO_SCREEN
@ -692,6 +693,7 @@ static ssize_t nvnet_dma_packet_from_guest(NvNetState *s)
struct RingDesc desc;
bool is_last_packet;
int i;
bool packet_sent = false;
for (i = 0; i < s->tx_ring_size; i++) {
/* Read ring descriptor */
@ -716,6 +718,7 @@ static ssize_t nvnet_dma_packet_from_guest(NvNetState *s)
pci_dma_read(&s->dev, desc.packet_buffer,
s->txrx_dma_buf, desc.length + 1);
nvnet_send_packet(s, s->txrx_dma_buf, desc.length + 1);
packet_sent = true;
/* Update descriptor */
is_last_packet = desc.flags & NV_TX_LASTPACKET;
@ -732,9 +735,11 @@ static ssize_t nvnet_dma_packet_from_guest(NvNetState *s)
}
/* Trigger interrupt */
NVNET_DPRINTF("Triggering interrupt\n");
nvnet_set_reg(s, NvRegIrqStatus, NVREG_IRQSTAT_BIT4, 4);
nvnet_update_irq(s);
if (packet_sent) {
NVNET_DPRINTF("Triggering interrupt\n");
nvnet_set_reg(s, NvRegIrqStatus, NVREG_IRQSTAT_BIT4, 4);
nvnet_update_irq(s);
}
return 0;
}