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e1000: add polling mode support for tx/rx 

In scenarios that require high time accuracy, we do not want an
interrupt from the NIC to interrupt the current task, so add support
for polling mode.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
This commit is contained in:
zhanghongyu 2024-07-09 15:12:50 +08:00 committed by Mateusz Szafoni
parent 064eb5fd35
commit 948d51cd67
1 changed files with 33 additions and 21 deletions
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54
drivers/net/e1000.c
View File

@ -45,13 +45,13 @@
/* Packet buffer size */
#define E1000_PKTBUF_SIZE 2048
#define E1000_RCTL_BSIZE E1000_RCTL_BSIZE_2048
#define E1000_PKTBUF_SIZE 2048
#define E1000_RCTL_BSIZE E1000_RCTL_BSIZE_2048
/* TX and RX descriptors */
#define E1000_TX_DESC 256
#define E1000_RX_DESC 256
#define E1000_TX_DESC 256
#define E1000_RX_DESC 256
/* After RX packet is done, we provide free netpkt to the RX descriptor ring.
* The upper-half network logic is responsible for freeing the RX packets
@ -60,8 +60,8 @@
* It's hard to tell how many spare buffers is needed, for now it's set to 8.
*/
#define E1000_TX_QUOTA E1000_TX_DESC
#define E1000_RX_QUOTA (E1000_RX_DESC + CONFIG_NET_E1000_RXSPARE)
#define E1000_TX_QUOTA (E1000_TX_DESC - 1)
#define E1000_RX_QUOTA (E1000_RX_DESC + CONFIG_NET_E1000_RXSPARE)
/* NOTE: CONFIG_IOB_ALIGNMENT must match system D-CACHE line size */
@ -75,30 +75,39 @@
/* PCI BARs */
#define E1000_MMIO_BAR 0
#define E1000_FLASH_BAR 1
#define E1000_IO_BAR 2
#define E1000_MSIX_BAR 3
#define E1000_MMIO_BAR 0
#define E1000_FLASH_BAR 1
#define E1000_IO_BAR 2
#define E1000_MSIX_BAR 3
/* E1000 interrupts */
#define E1000_INTERRUPTS (E1000_IC_RXO | E1000_IC_RXT0 | \
E1000_IC_RXDMT0 | E1000_IC_LSC | \
E1000_IC_TXDW)
#if CONFIG_NETDEV_WORK_THREAD_POLLING_PERIOD > 0
# define E1000_INTERRUPTS (E1000_IC_LSC)
#else
# define E1000_INTERRUPTS (E1000_IC_RXO | E1000_IC_RXT0 | \
E1000_IC_RXDMT0 | E1000_IC_LSC | \
E1000_IC_TXDW)
#endif
/* For MSI-X we allocate all interrupts to MSI-X vector 0 */
#define E1000_MSIX_INTERRUPTS (E1000_IC_RXQ0 | \
E1000_IC_TXQ0 | \
E1000_IC_OTHER)
#define E1000_MSIX_IVAR (E1000_IVAR_RXQ0_EN | \
E1000_IVAR_TXQ0_EN | \
E1000_IVAR_OTHER_EN)
#if CONFIG_NETDEV_WORK_THREAD_POLLING_PERIOD > 0
# define E1000_MSIX_INTERRUPTS (E1000_IC_OTHER)
# define E1000_MSIX_IVAR (E1000_IVAR_OTHER_EN)
#else
# define E1000_MSIX_INTERRUPTS (E1000_IC_RXQ0 | \
E1000_IC_TXQ0 | \
E1000_IC_OTHER)
# define E1000_MSIX_IVAR (E1000_IVAR_RXQ0_EN | \
E1000_IVAR_TXQ0_EN | \
E1000_IVAR_OTHER_EN)
#endif
/* NIC specific Flags */
#define E1000_RESET_BROKEN (1 << 0)
#define E1000_HAS_MSIX (1 << 1)
#define E1000_RESET_BROKEN (1 << 0)
#define E1000_HAS_MSIX (1 << 1)
/*****************************************************************************
* Private Types
@ -285,6 +294,9 @@ static const struct netdev_ops_s g_e1000_ops =
.addmac = e1000_addmac,
.rmmac = e1000_rmmac,
#endif
#if CONFIG_NETDEV_WORK_THREAD_POLLING_PERIOD > 0
.reclaim = e1000_txdone,
#endif
};
/*****************************************************************************