diff options
| -rw-r--r-- | drivers/net/s2io.c | 54 | ||||
| -rw-r--r-- | drivers/net/s2io.h | 5 |
2 files changed, 40 insertions, 19 deletions
diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c index abf910e4033..e083351e3f4 100644 --- a/drivers/net/s2io.c +++ b/drivers/net/s2io.c @@ -67,7 +67,7 @@ /* S2io Driver name & version. */ static char s2io_driver_name[] = "Neterion"; -static char s2io_driver_version[] = "Version 2.0.2.0"; +static char s2io_driver_version[] = "Version 2.0.2.1"; static inline int RXD_IS_UP2DT(RxD_t *rxdp) { @@ -301,6 +301,8 @@ static unsigned int bimodal = 0; #ifndef CONFIG_S2IO_NAPI static unsigned int indicate_max_pkts; #endif +/* Frequency of Rx desc syncs expressed as power of 2 */ +static unsigned int rxsync_frequency = 3; /* * S2IO device table. @@ -837,7 +839,7 @@ static int init_nic(struct s2io_nic *nic) */ if (nic->device_type & XFRAME_II_DEVICE) { while (herc_act_dtx_cfg[dtx_cnt] != END_SIGN) { - SPECIAL_REG_WRITE(xena_dtx_cfg[dtx_cnt], + SPECIAL_REG_WRITE(herc_act_dtx_cfg[dtx_cnt], &bar0->dtx_control, UF); if (dtx_cnt & 0x1) msleep(1); /* Necessary!! */ @@ -2083,6 +2085,7 @@ int fill_rx_buffers(struct s2io_nic *nic, int ring_no) #ifndef CONFIG_S2IO_NAPI unsigned long flags; #endif + RxD_t *first_rxdp = NULL; mac_control = &nic->mac_control; config = &nic->config; @@ -2202,6 +2205,10 @@ int fill_rx_buffers(struct s2io_nic *nic, int ring_no) if (!skb) { DBG_PRINT(ERR_DBG, "%s: Out of ", dev->name); DBG_PRINT(ERR_DBG, "memory to allocate SKBs\n"); + if (first_rxdp) { + wmb(); + first_rxdp->Control_1 |= RXD_OWN_XENA; + } return -ENOMEM; } #ifndef CONFIG_2BUFF_MODE @@ -2212,7 +2219,8 @@ int fill_rx_buffers(struct s2io_nic *nic, int ring_no) rxdp->Control_2 &= (~MASK_BUFFER0_SIZE); rxdp->Control_2 |= SET_BUFFER0_SIZE(size); rxdp->Host_Control = (unsigned long) (skb); - rxdp->Control_1 |= RXD_OWN_XENA; + if (alloc_tab & ((1 << rxsync_frequency) - 1)) + rxdp->Control_1 |= RXD_OWN_XENA; off++; off %= (MAX_RXDS_PER_BLOCK + 1); mac_control->rings[ring_no].rx_curr_put_info.offset = off; @@ -2239,17 +2247,34 @@ int fill_rx_buffers(struct s2io_nic *nic, int ring_no) rxdp->Control_2 |= SET_BUFFER1_SIZE(1); /* dummy. */ rxdp->Control_2 |= BIT(0); /* Set Buffer_Empty bit. */ rxdp->Host_Control = (u64) ((unsigned long) (skb)); - rxdp->Control_1 |= RXD_OWN_XENA; + if (alloc_tab & ((1 << rxsync_frequency) - 1)) + rxdp->Control_1 |= RXD_OWN_XENA; off++; mac_control->rings[ring_no].rx_curr_put_info.offset = off; #endif rxdp->Control_2 |= SET_RXD_MARKER; + if (!(alloc_tab & ((1 << rxsync_frequency) - 1))) { + if (first_rxdp) { + wmb(); + first_rxdp->Control_1 |= RXD_OWN_XENA; + } + first_rxdp = rxdp; + } atomic_inc(&nic->rx_bufs_left[ring_no]); alloc_tab++; } end: + /* Transfer ownership of first descriptor to adapter just before + * exiting. Before that, use memory barrier so that ownership + * and other fields are seen by adapter correctly. + */ + if (first_rxdp) { + wmb(); + first_rxdp->Control_1 |= RXD_OWN_XENA; + } + return SUCCESS; } @@ -2783,16 +2808,16 @@ void s2io_reset(nic_t * sp) s2io_set_swapper(sp); /* Clear certain PCI/PCI-X fields after reset */ - pci_read_config_word(sp->pdev, PCI_COMMAND, &pci_cmd); - pci_cmd &= 0x7FFF; /* Clear parity err detect bit */ - pci_write_config_word(sp->pdev, PCI_COMMAND, pci_cmd); + if (sp->device_type == XFRAME_II_DEVICE) { + /* Clear parity err detect bit */ + pci_write_config_word(sp->pdev, PCI_STATUS, 0x8000); - val64 = readq(&bar0->txpic_int_reg); - val64 &= ~BIT(62); /* Clearing PCI_STATUS error reflected here */ - writeq(val64, &bar0->txpic_int_reg); + /* Clearing PCIX Ecc status register */ + pci_write_config_dword(sp->pdev, 0x68, 0x7C); - /* Clearing PCIX Ecc status register */ - pci_write_config_dword(sp->pdev, 0x68, 0); + /* Clearing PCI_STATUS error reflected here */ + writeq(BIT(62), &bar0->txpic_int_reg); + } /* Reset device statistics maintained by OS */ memset(&sp->stats, 0, sizeof (struct net_device_stats)); @@ -3168,8 +3193,6 @@ int s2io_xmit(struct sk_buff *skb, struct net_device *dev) val64 = mac_control->fifos[queue].list_info[put_off].list_phy_addr; writeq(val64, &tx_fifo->TxDL_Pointer); - wmb(); - val64 = (TX_FIFO_LAST_TXD_NUM(frg_cnt) | TX_FIFO_FIRST_LIST | TX_FIFO_LAST_LIST); @@ -3179,6 +3202,8 @@ int s2io_xmit(struct sk_buff *skb, struct net_device *dev) #endif writeq(val64, &tx_fifo->List_Control); + mmiowb(); + put_off++; put_off %= mac_control->fifos[queue].tx_curr_put_info.fifo_len + 1; mac_control->fifos[queue].tx_curr_put_info.offset = put_off; @@ -5172,6 +5197,7 @@ module_param(bimodal, bool, 0); #ifndef CONFIG_S2IO_NAPI module_param(indicate_max_pkts, int, 0); #endif +module_param(rxsync_frequency, int, 0); /** * s2io_init_nic - Initialization of the adapter . diff --git a/drivers/net/s2io.h b/drivers/net/s2io.h index 946314503da..5d9270730ca 100644 --- a/drivers/net/s2io.h +++ b/drivers/net/s2io.h @@ -13,11 +13,6 @@ #ifndef _S2IO_H #define _S2IO_H -/* Enable 2 buffer mode by default for SGI system */ -#ifdef CONFIG_IA64_SGI_SN2 -#define CONFIG_2BUFF_MODE -#endif - #define TBD 0 #define BIT(loc) (0x8000000000000000ULL >> (loc)) #define vBIT(val, loc, sz) (((u64)val) << (64-loc-sz)) |