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@@ -155,9 +155,9 @@
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#define DRV_NAME "e100"
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#define DRV_EXT "-NAPI"
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-#define DRV_VERSION "3.3.6-k2"DRV_EXT
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+#define DRV_VERSION "3.4.8-k2"DRV_EXT
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#define DRV_DESCRIPTION "Intel(R) PRO/100 Network Driver"
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-#define DRV_COPYRIGHT "Copyright(c) 1999-2004 Intel Corporation"
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+#define DRV_COPYRIGHT "Copyright(c) 1999-2005 Intel Corporation"
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#define PFX DRV_NAME ": "
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#define E100_WATCHDOG_PERIOD (2 * HZ)
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@@ -210,11 +210,17 @@ static struct pci_device_id e100_id_table[] = {
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INTEL_8255X_ETHERNET_DEVICE(0x1069, 6),
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INTEL_8255X_ETHERNET_DEVICE(0x106A, 6),
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INTEL_8255X_ETHERNET_DEVICE(0x106B, 6),
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+ INTEL_8255X_ETHERNET_DEVICE(0x1091, 7),
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+ INTEL_8255X_ETHERNET_DEVICE(0x1092, 7),
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+ INTEL_8255X_ETHERNET_DEVICE(0x1093, 7),
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+ INTEL_8255X_ETHERNET_DEVICE(0x1094, 7),
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+ INTEL_8255X_ETHERNET_DEVICE(0x1095, 7),
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INTEL_8255X_ETHERNET_DEVICE(0x1209, 0),
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INTEL_8255X_ETHERNET_DEVICE(0x1229, 0),
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INTEL_8255X_ETHERNET_DEVICE(0x2449, 2),
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INTEL_8255X_ETHERNET_DEVICE(0x2459, 2),
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INTEL_8255X_ETHERNET_DEVICE(0x245D, 2),
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+ INTEL_8255X_ETHERNET_DEVICE(0x27DC, 7),
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{ 0, }
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};
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MODULE_DEVICE_TABLE(pci, e100_id_table);
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@@ -269,6 +275,12 @@ enum scb_status {
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rus_mask = 0x3C,
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};
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+enum ru_state {
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+ RU_SUSPENDED = 0,
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+ RU_RUNNING = 1,
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+ RU_UNINITIALIZED = -1,
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+};
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+
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enum scb_stat_ack {
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stat_ack_not_ours = 0x00,
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stat_ack_sw_gen = 0x04,
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@@ -510,7 +522,7 @@ struct nic {
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struct rx *rx_to_use;
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struct rx *rx_to_clean;
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struct rfd blank_rfd;
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- int ru_running;
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+ enum ru_state ru_running;
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spinlock_t cb_lock ____cacheline_aligned;
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spinlock_t cmd_lock;
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@@ -539,6 +551,7 @@ struct nic {
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struct timer_list watchdog;
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struct timer_list blink_timer;
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struct mii_if_info mii;
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+ struct work_struct tx_timeout_task;
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enum loopback loopback;
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struct mem *mem;
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@@ -770,7 +783,7 @@ static int e100_eeprom_save(struct nic *nic, u16 start, u16 count)
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return 0;
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}
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-#define E100_WAIT_SCB_TIMEOUT 40
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+#define E100_WAIT_SCB_TIMEOUT 20000 /* we might have to wait 100ms!!! */
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static inline int e100_exec_cmd(struct nic *nic, u8 cmd, dma_addr_t dma_addr)
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{
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unsigned long flags;
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@@ -840,6 +853,10 @@ static inline int e100_exec_cb(struct nic *nic, struct sk_buff *skb,
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* because the controller is too busy, so
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* let's just queue the command and try again
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* when another command is scheduled. */
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+ if(err == -ENOSPC) {
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+ //request a reset
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+ schedule_work(&nic->tx_timeout_task);
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+ }
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break;
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} else {
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nic->cuc_cmd = cuc_resume;
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@@ -884,7 +901,7 @@ static void mdio_write(struct net_device *netdev, int addr, int reg, int data)
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static void e100_get_defaults(struct nic *nic)
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{
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- struct param_range rfds = { .min = 64, .max = 256, .count = 64 };
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+ struct param_range rfds = { .min = 16, .max = 256, .count = 64 };
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struct param_range cbs = { .min = 64, .max = 256, .count = 64 };
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pci_read_config_byte(nic->pdev, PCI_REVISION_ID, &nic->rev_id);
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@@ -899,8 +916,9 @@ static void e100_get_defaults(struct nic *nic)
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/* Quadwords to DMA into FIFO before starting frame transmit */
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nic->tx_threshold = 0xE0;
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- nic->tx_command = cpu_to_le16(cb_tx | cb_i | cb_tx_sf |
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- ((nic->mac >= mac_82558_D101_A4) ? cb_cid : 0));
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+ /* no interrupt for every tx completion, delay = 256us if not 557*/
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+ nic->tx_command = cpu_to_le16(cb_tx | cb_tx_sf |
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+ ((nic->mac >= mac_82558_D101_A4) ? cb_cid : cb_i));
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/* Template for a freshly allocated RFD */
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nic->blank_rfd.command = cpu_to_le16(cb_el);
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@@ -964,7 +982,8 @@ static void e100_configure(struct nic *nic, struct cb *cb, struct sk_buff *skb)
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if(nic->flags & multicast_all)
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config->multicast_all = 0x1; /* 1=accept, 0=no */
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- if(!(nic->flags & wol_magic))
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+ /* disable WoL when up */
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+ if(netif_running(nic->netdev) || !(nic->flags & wol_magic))
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config->magic_packet_disable = 0x1; /* 1=off, 0=on */
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if(nic->mac >= mac_82558_D101_A4) {
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@@ -1203,7 +1222,9 @@ static void e100_update_stats(struct nic *nic)
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}
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}
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- e100_exec_cmd(nic, cuc_dump_reset, 0);
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+
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+ if(e100_exec_cmd(nic, cuc_dump_reset, 0))
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+ DPRINTK(TX_ERR, DEBUG, "exec cuc_dump_reset failed\n");
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}
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static void e100_adjust_adaptive_ifs(struct nic *nic, int speed, int duplex)
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@@ -1279,12 +1300,15 @@ static inline void e100_xmit_prepare(struct nic *nic, struct cb *cb,
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struct sk_buff *skb)
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{
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cb->command = nic->tx_command;
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+ /* interrupt every 16 packets regardless of delay */
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+ if((nic->cbs_avail & ~15) == nic->cbs_avail) cb->command |= cb_i;
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cb->u.tcb.tbd_array = cb->dma_addr + offsetof(struct cb, u.tcb.tbd);
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cb->u.tcb.tcb_byte_count = 0;
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cb->u.tcb.threshold = nic->tx_threshold;
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cb->u.tcb.tbd_count = 1;
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cb->u.tcb.tbd.buf_addr = cpu_to_le32(pci_map_single(nic->pdev,
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skb->data, skb->len, PCI_DMA_TODEVICE));
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+ // check for mapping failure?
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cb->u.tcb.tbd.size = cpu_to_le16(skb->len);
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}
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@@ -1297,7 +1321,8 @@ static int e100_xmit_frame(struct sk_buff *skb, struct net_device *netdev)
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/* SW workaround for ICH[x] 10Mbps/half duplex Tx hang.
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Issue a NOP command followed by a 1us delay before
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issuing the Tx command. */
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- e100_exec_cmd(nic, cuc_nop, 0);
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+ if(e100_exec_cmd(nic, cuc_nop, 0))
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+ DPRINTK(TX_ERR, DEBUG, "exec cuc_nop failed\n");
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udelay(1);
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}
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@@ -1415,12 +1440,18 @@ static int e100_alloc_cbs(struct nic *nic)
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return 0;
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}
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-static inline void e100_start_receiver(struct nic *nic)
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+static inline void e100_start_receiver(struct nic *nic, struct rx *rx)
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{
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+ if(!nic->rxs) return;
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+ if(RU_SUSPENDED != nic->ru_running) return;
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+
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+ /* handle init time starts */
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+ if(!rx) rx = nic->rxs;
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+
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/* (Re)start RU if suspended or idle and RFA is non-NULL */
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- if(!nic->ru_running && nic->rx_to_clean->skb) {
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- e100_exec_cmd(nic, ruc_start, nic->rx_to_clean->dma_addr);
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- nic->ru_running = 1;
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+ if(rx->skb) {
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+ e100_exec_cmd(nic, ruc_start, rx->dma_addr);
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+ nic->ru_running = RU_RUNNING;
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}
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}
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@@ -1437,6 +1468,13 @@ static inline int e100_rx_alloc_skb(struct nic *nic, struct rx *rx)
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rx->dma_addr = pci_map_single(nic->pdev, rx->skb->data,
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RFD_BUF_LEN, PCI_DMA_BIDIRECTIONAL);
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+ if(pci_dma_mapping_error(rx->dma_addr)) {
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+ dev_kfree_skb_any(rx->skb);
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+ rx->skb = 0;
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+ rx->dma_addr = 0;
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+ return -ENOMEM;
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+ }
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+
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/* Link the RFD to end of RFA by linking previous RFD to
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* this one, and clearing EL bit of previous. */
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if(rx->prev->skb) {
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@@ -1471,7 +1509,7 @@ static inline int e100_rx_indicate(struct nic *nic, struct rx *rx,
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/* If data isn't ready, nothing to indicate */
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if(unlikely(!(rfd_status & cb_complete)))
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- return -EAGAIN;
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+ return -ENODATA;
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/* Get actual data size */
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actual_size = le16_to_cpu(rfd->actual_size) & 0x3FFF;
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@@ -1482,6 +1520,10 @@ static inline int e100_rx_indicate(struct nic *nic, struct rx *rx,
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pci_unmap_single(nic->pdev, rx->dma_addr,
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RFD_BUF_LEN, PCI_DMA_FROMDEVICE);
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+ /* this allows for a fast restart without re-enabling interrupts */
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+ if(le16_to_cpu(rfd->command) & cb_el)
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+ nic->ru_running = RU_SUSPENDED;
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+
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/* Pull off the RFD and put the actual data (minus eth hdr) */
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skb_reserve(skb, sizeof(struct rfd));
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skb_put(skb, actual_size);
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@@ -1514,20 +1556,45 @@ static inline void e100_rx_clean(struct nic *nic, unsigned int *work_done,
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unsigned int work_to_do)
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{
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struct rx *rx;
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+ int restart_required = 0;
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+ struct rx *rx_to_start = NULL;
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+
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+ /* are we already rnr? then pay attention!!! this ensures that
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+ * the state machine progression never allows a start with a
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+ * partially cleaned list, avoiding a race between hardware
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+ * and rx_to_clean when in NAPI mode */
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+ if(RU_SUSPENDED == nic->ru_running)
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+ restart_required = 1;
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/* Indicate newly arrived packets */
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for(rx = nic->rx_to_clean; rx->skb; rx = nic->rx_to_clean = rx->next) {
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- if(e100_rx_indicate(nic, rx, work_done, work_to_do))
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+ int err = e100_rx_indicate(nic, rx, work_done, work_to_do);
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+ if(-EAGAIN == err) {
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+ /* hit quota so have more work to do, restart once
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+ * cleanup is complete */
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+ restart_required = 0;
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+ break;
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+ } else if(-ENODATA == err)
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break; /* No more to clean */
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}
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+ /* save our starting point as the place we'll restart the receiver */
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+ if(restart_required)
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+ rx_to_start = nic->rx_to_clean;
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+
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/* Alloc new skbs to refill list */
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for(rx = nic->rx_to_use; !rx->skb; rx = nic->rx_to_use = rx->next) {
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if(unlikely(e100_rx_alloc_skb(nic, rx)))
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break; /* Better luck next time (see watchdog) */
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}
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- e100_start_receiver(nic);
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+ if(restart_required) {
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+ // ack the rnr?
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+ writeb(stat_ack_rnr, &nic->csr->scb.stat_ack);
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+ e100_start_receiver(nic, rx_to_start);
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+ if(work_done)
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+ (*work_done)++;
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+ }
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}
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static void e100_rx_clean_list(struct nic *nic)
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@@ -1535,6 +1602,8 @@ static void e100_rx_clean_list(struct nic *nic)
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struct rx *rx;
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unsigned int i, count = nic->params.rfds.count;
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+ nic->ru_running = RU_UNINITIALIZED;
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+
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if(nic->rxs) {
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for(rx = nic->rxs, i = 0; i < count; rx++, i++) {
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if(rx->skb) {
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@@ -1548,7 +1617,6 @@ static void e100_rx_clean_list(struct nic *nic)
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}
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nic->rx_to_use = nic->rx_to_clean = NULL;
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- nic->ru_running = 0;
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}
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static int e100_rx_alloc_list(struct nic *nic)
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@@ -1557,6 +1625,7 @@ static int e100_rx_alloc_list(struct nic *nic)
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unsigned int i, count = nic->params.rfds.count;
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nic->rx_to_use = nic->rx_to_clean = NULL;
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+ nic->ru_running = RU_UNINITIALIZED;
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if(!(nic->rxs = kmalloc(sizeof(struct rx) * count, GFP_ATOMIC)))
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return -ENOMEM;
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@@ -1572,6 +1641,7 @@ static int e100_rx_alloc_list(struct nic *nic)
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}
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nic->rx_to_use = nic->rx_to_clean = nic->rxs;
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+ nic->ru_running = RU_SUSPENDED;
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return 0;
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}
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@@ -1593,7 +1663,7 @@ static irqreturn_t e100_intr(int irq, void *dev_id, struct pt_regs *regs)
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/* We hit Receive No Resource (RNR); restart RU after cleaning */
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if(stat_ack & stat_ack_rnr)
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- nic->ru_running = 0;
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+ nic->ru_running = RU_SUSPENDED;
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e100_disable_irq(nic);
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netif_rx_schedule(netdev);
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@@ -1663,6 +1733,7 @@ static int e100_change_mtu(struct net_device *netdev, int new_mtu)
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return 0;
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}
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+#ifdef CONFIG_PM
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static int e100_asf(struct nic *nic)
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{
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/* ASF can be enabled from eeprom */
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@@ -1671,6 +1742,7 @@ static int e100_asf(struct nic *nic)
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!(nic->eeprom[eeprom_config_asf] & eeprom_gcl) &&
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((nic->eeprom[eeprom_smbus_addr] & 0xFF) != 0xFE));
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}
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+#endif
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static int e100_up(struct nic *nic)
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{
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@@ -1683,13 +1755,16 @@ static int e100_up(struct nic *nic)
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if((err = e100_hw_init(nic)))
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goto err_clean_cbs;
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e100_set_multicast_list(nic->netdev);
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- e100_start_receiver(nic);
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+ e100_start_receiver(nic, 0);
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mod_timer(&nic->watchdog, jiffies);
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if((err = request_irq(nic->pdev->irq, e100_intr, SA_SHIRQ,
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nic->netdev->name, nic->netdev)))
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goto err_no_irq;
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- e100_enable_irq(nic);
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netif_wake_queue(nic->netdev);
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+ netif_poll_enable(nic->netdev);
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+ /* enable ints _after_ enabling poll, preventing a race between
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+ * disable ints+schedule */
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+ e100_enable_irq(nic);
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return 0;
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err_no_irq:
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@@ -1703,11 +1778,13 @@ err_rx_clean_list:
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static void e100_down(struct nic *nic)
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{
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+ /* wait here for poll to complete */
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+ netif_poll_disable(nic->netdev);
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+ netif_stop_queue(nic->netdev);
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e100_hw_reset(nic);
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free_irq(nic->pdev->irq, nic->netdev);
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del_timer_sync(&nic->watchdog);
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netif_carrier_off(nic->netdev);
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- netif_stop_queue(nic->netdev);
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e100_clean_cbs(nic);
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e100_rx_clean_list(nic);
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}
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@@ -1716,6 +1793,15 @@ static void e100_tx_timeout(struct net_device *netdev)
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{
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struct nic *nic = netdev_priv(netdev);
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+ /* Reset outside of interrupt context, to avoid request_irq
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+ * in interrupt context */
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+ schedule_work(&nic->tx_timeout_task);
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+}
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+
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+static void e100_tx_timeout_task(struct net_device *netdev)
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+{
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+ struct nic *nic = netdev_priv(netdev);
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+
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DPRINTK(TX_ERR, DEBUG, "scb.status=0x%02X\n",
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readb(&nic->csr->scb.status));
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e100_down(netdev_priv(netdev));
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@@ -1749,7 +1835,7 @@ static int e100_loopback_test(struct nic *nic, enum loopback loopback_mode)
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mdio_write(nic->netdev, nic->mii.phy_id, MII_BMCR,
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BMCR_LOOPBACK);
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- e100_start_receiver(nic);
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+ e100_start_receiver(nic, 0);
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if(!(skb = dev_alloc_skb(ETH_DATA_LEN))) {
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err = -ENOMEM;
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@@ -1869,7 +1955,6 @@ static int e100_set_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
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else
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nic->flags &= ~wol_magic;
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- pci_enable_wake(nic->pdev, 0, nic->flags & (wol_magic | e100_asf(nic)));
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e100_exec_cb(nic, NULL, e100_configure);
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return 0;
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@@ -2223,6 +2308,7 @@ static int __devinit e100_probe(struct pci_dev *pdev,
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e100_get_defaults(nic);
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+ /* locks must be initialized before calling hw_reset */
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spin_lock_init(&nic->cb_lock);
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spin_lock_init(&nic->cmd_lock);
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@@ -2240,6 +2326,9 @@ static int __devinit e100_probe(struct pci_dev *pdev,
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nic->blink_timer.function = e100_blink_led;
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nic->blink_timer.data = (unsigned long)nic;
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+ INIT_WORK(&nic->tx_timeout_task,
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+ (void (*)(void *))e100_tx_timeout_task, netdev);
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+
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if((err = e100_alloc(nic))) {
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DPRINTK(PROBE, ERR, "Cannot alloc driver memory, aborting.\n");
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goto err_out_iounmap;
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@@ -2263,7 +2352,8 @@ static int __devinit e100_probe(struct pci_dev *pdev,
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(nic->eeprom[eeprom_id] & eeprom_id_wol))
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nic->flags |= wol_magic;
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- pci_enable_wake(pdev, 0, nic->flags & (wol_magic | e100_asf(nic)));
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+ /* ack any pending wake events, disable PME */
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+ pci_enable_wake(pdev, 0, 0);
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strcpy(netdev->name, "eth%d");
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if((err = register_netdev(netdev))) {
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@@ -2335,7 +2425,10 @@ static int e100_resume(struct pci_dev *pdev)
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pci_set_power_state(pdev, PCI_D0);
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pci_restore_state(pdev);
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- e100_hw_init(nic);
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+ /* ack any pending wake events, disable PME */
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+ pci_enable_wake(pdev, 0, 0);
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+ if(e100_hw_init(nic))
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+ DPRINTK(HW, ERR, "e100_hw_init failed\n");
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netif_device_attach(netdev);
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if(netif_running(netdev))
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@@ -2345,6 +2438,21 @@ static int e100_resume(struct pci_dev *pdev)
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}
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#endif
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+
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+static void e100_shutdown(struct device *dev)
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+{
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+ struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
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+ struct net_device *netdev = pci_get_drvdata(pdev);
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+ struct nic *nic = netdev_priv(netdev);
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+
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+#ifdef CONFIG_PM
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+ pci_enable_wake(pdev, 0, nic->flags & (wol_magic | e100_asf(nic)));
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+#else
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+ pci_enable_wake(pdev, 0, nic->flags & (wol_magic));
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+#endif
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+}
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+
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+
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static struct pci_driver e100_driver = {
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.name = DRV_NAME,
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.id_table = e100_id_table,
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@@ -2354,6 +2462,11 @@ static struct pci_driver e100_driver = {
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.suspend = e100_suspend,
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.resume = e100_resume,
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#endif
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+
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+ .driver = {
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+ .shutdown = e100_shutdown,
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+ }
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+
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};
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static int __init e100_init_module(void)
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Linus Torvalds