X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/ca2070ed58c9084f30b57b8fda69329b2136c019..41f0999b88dbb00aa7193b23088c90fbef79e1b6:/target/linux/adm5120/files/drivers/net/adm5120sw.c diff --git a/target/linux/adm5120/files/drivers/net/adm5120sw.c b/target/linux/adm5120/files/drivers/net/adm5120sw.c index 987e1de31..a92695485 100644 --- a/target/linux/adm5120/files/drivers/net/adm5120sw.c +++ b/target/linux/adm5120/files/drivers/net/adm5120sw.c @@ -1,52 +1,55 @@ /* - * ADM5120 built in ethernet switch driver + * ADM5120 built-in ethernet switch driver * - * Copyright Jeroen Vreeken (pe1rxq@amsat.org), 2005 + * Copyright (C) 2007-2008 Gabor Juhos * - * Inspiration for this driver came from the original ADMtek 2.4 - * driver, Copyright ADMtek Inc. + * This code was based on a driver for Linux 2.6.xx by Jeroen Vreeken. + * Copyright Jeroen Vreeken (pe1rxq@amsat.org), 2005 + * NAPI extension for the Jeroen's driver + * Copyright Thomas Langer (Thomas.Langer@infineon.com), 2007 + * Copyright Friedrich Beckmann (Friedrich.Beckmann@infineon.com), 2007 + * Inspiration for the Jeroen's driver came from the ADMtek 2.4 driver. + * Copyright ADMtek Inc. * - * NAPI extensions by Thomas Langer (Thomas.Langer@infineon.com) - * and Friedrich Beckmann (Friedrich.Beckmann@infineon.com), 2007 - * - * TODO: Add support of high prio queues (currently disabled) + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. * */ + #include #include #include #include #include #include +#include +#include +#include #include #include #include -#include -#include - #include -#include -#include -#include -#include +#include +#include +#include #include "adm5120sw.h" #define DRV_NAME "adm5120-switch" #define DRV_DESC "ADM5120 built-in ethernet switch driver" -#define DRV_VERSION "0.1.0" +#define DRV_VERSION "0.1.1" -MODULE_AUTHOR("Jeroen Vreeken (pe1rxq@amsat.org)"); -MODULE_DESCRIPTION("ADM5120 ethernet switch driver"); -MODULE_LICENSE("GPL"); +#define CONFIG_ADM5120_SWITCH_NAPI 1 +#undef CONFIG_ADM5120_SWITCH_DEBUG /* ------------------------------------------------------------------------ */ -#if 0 /*def ADM5120_SWITCH_DEBUG*/ -#define SW_DBG(f, a...) printk(KERN_DEBUG "%s: " f, DRV_NAME , ## a) +#ifdef CONFIG_ADM5120_SWITCH_DEBUG +#define SW_DBG(f, a...) printk(KERN_DBG "%s: " f, DRV_NAME , ## a) #else #define SW_DBG(f, a...) do {} while (0) #endif @@ -61,7 +64,7 @@ MODULE_LICENSE("GPL"); #define TX_RING_SIZE 32 #define TX_QUEUE_LEN 28 /* Limit ring entries actually used. */ -#define TX_TIMEOUT HZ*400 +#define TX_TIMEOUT (HZ * 400) #define RX_DESCS_SIZE (RX_RING_SIZE * sizeof(struct dma_desc *)) #define RX_SKBS_SIZE (RX_RING_SIZE * sizeof(struct sk_buff *)) @@ -83,10 +86,21 @@ MODULE_LICENSE("GPL"); SWITCH_INT_MD | SWITCH_INT_PSC) #define SWITCH_INTS_USED (SWITCH_INTS_LOW | SWITCH_INT_PSC) -#define SWITCH_INTS_POLL (SWITCH_INT_RLD | SWITCH_INT_LDF) +#define SWITCH_INTS_POLL (SWITCH_INT_RLD | SWITCH_INT_LDF | SWITCH_INT_SLD) /* ------------------------------------------------------------------------ */ +struct adm5120_if_priv { + struct net_device *dev; + + unsigned int vlan_no; + unsigned int port_mask; + +#ifdef CONFIG_ADM5120_SWITCH_NAPI + struct napi_struct napi; +#endif +}; + struct dma_desc { __u32 buf1; #define DESC_OWN (1UL << 31) /* Owned by the switch */ @@ -117,28 +131,8 @@ struct dma_desc { #define DESC_TYPE_PPPoE 0x1 /* PPPoE packet */ } __attribute__ ((aligned(16))); -static inline u32 desc_get_srcport(struct dma_desc *desc) -{ - return (desc->misc >> DESC_SRCPORT_SHIFT) & DESC_SRCPORT_MASK; -} - -static inline u32 desc_get_pktlen(struct dma_desc *desc) -{ - return (desc->misc >> DESC_PKTLEN_SHIFT) & DESC_PKTLEN_MASK; -} - -static inline int desc_ipcsum_fail(struct dma_desc *desc) -{ - return ((desc->misc & DESC_IPCSUM_FAIL) != 0); -} - /* ------------------------------------------------------------------------ */ -/* default settings - unlimited TX and RX on all ports, default shaper mode */ -static unsigned char bw_matrix[SWITCH_NUM_PORTS] = { - 0, 0, 0, 0, 0, 0 -}; - static int adm5120_nrdevs; static struct net_device *adm5120_devs[SWITCH_NUM_PORTS]; @@ -159,11 +153,7 @@ static unsigned int cur_txl, dirty_txl; static unsigned int sw_used; -static spinlock_t sw_lock = SPIN_LOCK_UNLOCKED; -static spinlock_t poll_lock = SPIN_LOCK_UNLOCKED; - -static struct net_device sw_dev; -static struct net_device *poll_dev; +static spinlock_t tx_lock = SPIN_LOCK_UNLOCKED; /* ------------------------------------------------------------------------ */ @@ -209,6 +199,21 @@ static inline u32 sw_int_status(void) return t; } +static inline u32 desc_get_srcport(struct dma_desc *desc) +{ + return (desc->misc >> DESC_SRCPORT_SHIFT) & DESC_SRCPORT_MASK; +} + +static inline u32 desc_get_pktlen(struct dma_desc *desc) +{ + return (desc->misc >> DESC_PKTLEN_SHIFT) & DESC_PKTLEN_MASK; +} + +static inline int desc_ipcsum_fail(struct dma_desc *desc) +{ + return ((desc->misc & DESC_IPCSUM_FAIL) != 0); +} + /* ------------------------------------------------------------------------ */ static void sw_dump_desc(char *label, struct dma_desc *desc, int tx) @@ -227,7 +232,7 @@ static void sw_dump_desc(char *label, struct dma_desc *desc, int tx) t = desc->buf2; SW_DBG(" buf2 %08X addr=%08X%s\n", desc->buf2, t & DESC_ADDR_MASK, - (t & DESC_BUF2_EN) ? " EN" : "" ); + (t & DESC_BUF2_EN) ? " EN" : ""); t = desc->misc; if (tx) @@ -279,60 +284,59 @@ static void sw_dump_regs(void) { u32 t; - t = SW_READ_REG(PHY_STATUS); + t = sw_read_reg(SWITCH_REG_PHY_STATUS); SW_DBG("phy_status: %08X\n", t); - t = SW_READ_REG(CPUP_CONF); + t = sw_read_reg(SWITCH_REG_CPUP_CONF); SW_DBG("cpup_conf: %08X%s%s%s\n", t, (t & CPUP_CONF_DCPUP) ? " DCPUP" : "", (t & CPUP_CONF_CRCP) ? " CRCP" : "", (t & CPUP_CONF_BTM) ? " BTM" : ""); - t = SW_READ_REG(PORT_CONF0); + t = sw_read_reg(SWITCH_REG_PORT_CONF0); SW_DBG("port_conf0: %08X\n", t); - t = SW_READ_REG(PORT_CONF1); + t = sw_read_reg(SWITCH_REG_PORT_CONF1); SW_DBG("port_conf1: %08X\n", t); - t = SW_READ_REG(PORT_CONF2); + t = sw_read_reg(SWITCH_REG_PORT_CONF2); SW_DBG("port_conf2: %08X\n", t); - t = SW_READ_REG(VLAN_G1); + t = sw_read_reg(SWITCH_REG_VLAN_G1); SW_DBG("vlan g1: %08X\n", t); - t = SW_READ_REG(VLAN_G2); + t = sw_read_reg(SWITCH_REG_VLAN_G2); SW_DBG("vlan g2: %08X\n", t); - t = SW_READ_REG(BW_CNTL0); + t = sw_read_reg(SWITCH_REG_BW_CNTL0); SW_DBG("bw_cntl0: %08X\n", t); - t = SW_READ_REG(BW_CNTL1); + t = sw_read_reg(SWITCH_REG_BW_CNTL1); SW_DBG("bw_cntl1: %08X\n", t); - t = SW_READ_REG(PHY_CNTL0); + t = sw_read_reg(SWITCH_REG_PHY_CNTL0); SW_DBG("phy_cntl0: %08X\n", t); - t = SW_READ_REG(PHY_CNTL1); + t = sw_read_reg(SWITCH_REG_PHY_CNTL1); SW_DBG("phy_cntl1: %08X\n", t); - t = SW_READ_REG(PHY_CNTL2); + t = sw_read_reg(SWITCH_REG_PHY_CNTL2); SW_DBG("phy_cntl2: %08X\n", t); - t = SW_READ_REG(PHY_CNTL3); + t = sw_read_reg(SWITCH_REG_PHY_CNTL3); SW_DBG("phy_cntl3: %08X\n", t); - t = SW_READ_REG(PHY_CNTL4); + t = sw_read_reg(SWITCH_REG_PHY_CNTL4); SW_DBG("phy_cntl4: %08X\n", t); - t = SW_READ_REG(INT_STATUS); + t = sw_read_reg(SWITCH_REG_INT_STATUS); sw_dump_intr_mask("int_status: ", t); - t = SW_READ_REG(INT_MASK); + t = sw_read_reg(SWITCH_REG_INT_MASK); sw_dump_intr_mask("int_mask: ", t); - t = SW_READ_REG(SHDA); + t = sw_read_reg(SWITCH_REG_SHDA); SW_DBG("shda: %08X\n", t); - t = SW_READ_REG(SLDA); + t = sw_read_reg(SWITCH_REG_SLDA); SW_DBG("slda: %08X\n", t); - t = SW_READ_REG(RHDA); + t = sw_read_reg(SWITCH_REG_RHDA); SW_DBG("rhda: %08X\n", t); - t = SW_READ_REG(RLDA); + t = sw_read_reg(SWITCH_REG_RLDA); SW_DBG("rlda: %08X\n", t); } - /* ------------------------------------------------------------------------ */ static inline void adm5120_rx_dma_update(struct dma_desc *desc, @@ -387,8 +391,6 @@ static int adm5120_switch_rx(int limit) SW_DBG("rx start, limit=%d, cur_rxl=%u, dirty_rxl=%u\n", limit, cur_rxl, dirty_rxl); - sw_int_ack(SWITCH_INTS_POLL); - while (done < limit) { int entry = cur_rxl % RX_RING_SIZE; struct dma_desc *desc = &rxl_descs[entry]; @@ -431,7 +433,11 @@ static int adm5120_switch_rx(int limit) dma_cache_wback_inv((unsigned long)skb->data, skb->len); +#ifdef CONFIG_ADM5120_SWITCH_NAPI netif_receive_skb(skb); +#else + netif_rx(skb); +#endif rdev->last_rx = jiffies; rdev->stats.rx_packets++; @@ -457,37 +463,11 @@ static int adm5120_switch_rx(int limit) return done; } - -static int adm5120_switch_poll(struct net_device *dev, int *budget) -{ - int limit = min(dev->quota, *budget); - int done; - u32 status; - - done = adm5120_switch_rx(limit); - - *budget -= done; - dev->quota -= done; - - status = sw_int_status() & SWITCH_INTS_POLL; - if ((done < limit) && (!status)) { - spin_lock_irq(&poll_lock); - SW_DBG("disable polling mode for %s\n", poll_dev->name); - netif_rx_complete(poll_dev); - sw_int_unmask(SWITCH_INTS_POLL); - poll_dev = NULL; - spin_unlock_irq(&poll_lock); - return 0; - } - - return 1; -} - static void adm5120_switch_tx(void) { unsigned int entry; - /* find and cleanup dirty tx descriptors */ + spin_lock(&tx_lock); entry = dirty_txl % TX_RING_SIZE; while (dirty_txl != cur_txl) { struct dma_desc *desc = &txl_descs[entry]; @@ -507,7 +487,6 @@ static void adm5120_switch_tx(void) } if ((cur_txl - dirty_txl) < TX_QUEUE_LEN - 4) { - /* wake up queue of all devices */ int i; for (i = 0; i < SWITCH_NUM_PORTS; i++) { if (!adm5120_devs[i]) @@ -515,57 +494,235 @@ static void adm5120_switch_tx(void) netif_wake_queue(adm5120_devs[i]); } } + spin_unlock(&tx_lock); } -static irqreturn_t adm5120_poll_irq(int irq, void *dev_id) +#ifdef CONFIG_ADM5120_SWITCH_NAPI +static int adm5120_if_poll(struct napi_struct *napi, int limit) { - struct net_device *dev = dev_id; + struct adm5120_if_priv *priv = container_of(napi, + struct adm5120_if_priv, napi); + struct net_device *dev = priv->dev; + int done; u32 status; - status = sw_int_status(); - status &= SWITCH_INTS_POLL; - if (!status) - return IRQ_NONE; + sw_int_ack(SWITCH_INTS_POLL); - sw_dump_intr_mask("poll ints", status); + SW_DBG("%s: processing TX ring\n", dev->name); + adm5120_switch_tx(); - if (!netif_running(dev)) { - SW_DBG("device %s is not running\n", dev->name); - return IRQ_NONE; - } + SW_DBG("%s: processing RX ring\n", dev->name); + done = adm5120_switch_rx(limit); - spin_lock(&poll_lock); - if (!poll_dev) { - SW_DBG("enable polling mode for %s\n", dev->name); - poll_dev = dev; - sw_int_mask(SWITCH_INTS_POLL); - netif_rx_schedule(poll_dev); + status = sw_int_status() & SWITCH_INTS_POLL; + if ((done < limit) && (!status)) { + SW_DBG("disable polling mode for %s\n", dev->name); + napi_complete(napi); + sw_int_unmask(SWITCH_INTS_POLL); + return 0; } - spin_unlock(&poll_lock); - return IRQ_HANDLED; + SW_DBG("%s still in polling mode, done=%d, status=%x\n", + dev->name, done, status); + return 1; } +#endif /* CONFIG_ADM5120_SWITCH_NAPI */ + static irqreturn_t adm5120_switch_irq(int irq, void *dev_id) { u32 status; status = sw_int_status(); - status &= SWITCH_INTS_ALL & ~SWITCH_INTS_POLL; + status &= SWITCH_INTS_ALL; if (!status) return IRQ_NONE; +#ifdef CONFIG_ADM5120_SWITCH_NAPI + sw_int_ack(status & ~SWITCH_INTS_POLL); + + if (status & SWITCH_INTS_POLL) { + struct net_device *dev = dev_id; + struct adm5120_if_priv *priv = netdev_priv(dev); + + sw_dump_intr_mask("poll ints", status); + SW_DBG("enable polling mode for %s\n", dev->name); + sw_int_mask(SWITCH_INTS_POLL); + napi_schedule(&priv->napi); + } +#else sw_int_ack(status); - if (status & SWITCH_INT_SLD) { - spin_lock(&sw_lock); + if (status & (SWITCH_INT_RLD | SWITCH_INT_LDF)) + adm5120_switch_rx(RX_RING_SIZE); + + if (status & SWITCH_INT_SLD) adm5120_switch_tx(); - spin_unlock(&sw_lock); - } +#endif return IRQ_HANDLED; } +static void adm5120_set_bw(char *matrix) +{ + unsigned long val; + + /* Port 0 to 3 are set using the bandwidth control 0 register */ + val = matrix[0] + (matrix[1]<<8) + (matrix[2]<<16) + (matrix[3]<<24); + sw_write_reg(SWITCH_REG_BW_CNTL0, val); + + /* Port 4 and 5 are set using the bandwidth control 1 register */ + val = matrix[4]; + if (matrix[5] == 1) + sw_write_reg(SWITCH_REG_BW_CNTL1, val | 0x80000000); + else + sw_write_reg(SWITCH_REG_BW_CNTL1, val & ~0x8000000); + + SW_DBG("D: ctl0 0x%ux, ctl1 0x%ux\n", sw_read_reg(SWITCH_REG_BW_CNTL0), + sw_read_reg(SWITCH_REG_BW_CNTL1)); +} + +static void adm5120_switch_tx_ring_reset(struct dma_desc *desc, + struct sk_buff **skbl, int num) +{ + memset(desc, 0, num * sizeof(*desc)); + desc[num-1].buf1 |= DESC_EOR; + memset(skbl, 0, sizeof(struct skb *) * num); + + cur_txl = 0; + dirty_txl = 0; +} + +static void adm5120_switch_rx_ring_reset(struct dma_desc *desc, + struct sk_buff **skbl, int num) +{ + int i; + + memset(desc, 0, num * sizeof(*desc)); + for (i = 0; i < num; i++) { + skbl[i] = dev_alloc_skb(SKB_ALLOC_LEN); + if (!skbl[i]) { + i = num; + break; + } + skb_reserve(skbl[i], SKB_RESERVE_LEN); + adm5120_rx_dma_update(&desc[i], skbl[i], (num - 1 == i)); + } + + cur_rxl = 0; + dirty_rxl = 0; +} + +static int adm5120_switch_tx_ring_alloc(void) +{ + int err; + + txl_descs = dma_alloc_coherent(NULL, TX_DESCS_SIZE, &txl_descs_dma, + GFP_ATOMIC); + if (!txl_descs) { + err = -ENOMEM; + goto err; + } + + txl_skbuff = kzalloc(TX_SKBS_SIZE, GFP_KERNEL); + if (!txl_skbuff) { + err = -ENOMEM; + goto err; + } + + return 0; + +err: + return err; +} + +static void adm5120_switch_tx_ring_free(void) +{ + int i; + + if (txl_skbuff) { + for (i = 0; i < TX_RING_SIZE; i++) + if (txl_skbuff[i]) + kfree_skb(txl_skbuff[i]); + kfree(txl_skbuff); + } + + if (txl_descs) + dma_free_coherent(NULL, TX_DESCS_SIZE, txl_descs, + txl_descs_dma); +} + +static int adm5120_switch_rx_ring_alloc(void) +{ + int err; + int i; + + /* init RX ring */ + rxl_descs = dma_alloc_coherent(NULL, RX_DESCS_SIZE, &rxl_descs_dma, + GFP_ATOMIC); + if (!rxl_descs) { + err = -ENOMEM; + goto err; + } + + rxl_skbuff = kzalloc(RX_SKBS_SIZE, GFP_KERNEL); + if (!rxl_skbuff) { + err = -ENOMEM; + goto err; + } + + for (i = 0; i < RX_RING_SIZE; i++) { + struct sk_buff *skb; + skb = alloc_skb(SKB_ALLOC_LEN, GFP_ATOMIC); + if (!skb) { + err = -ENOMEM; + goto err; + } + rxl_skbuff[i] = skb; + skb_reserve(skb, SKB_RESERVE_LEN); + } + + return 0; + +err: + return err; +} + +static void adm5120_switch_rx_ring_free(void) +{ + int i; + + if (rxl_skbuff) { + for (i = 0; i < RX_RING_SIZE; i++) + if (rxl_skbuff[i]) + kfree_skb(rxl_skbuff[i]); + kfree(rxl_skbuff); + } + + if (rxl_descs) + dma_free_coherent(NULL, RX_DESCS_SIZE, rxl_descs, + rxl_descs_dma); +} + +static void adm5120_write_mac(struct net_device *dev) +{ + struct adm5120_if_priv *priv = netdev_priv(dev); + unsigned char *mac = dev->dev_addr; + u32 t; + + t = mac[2] | (mac[3] << MAC_WT1_MAC3_SHIFT) | + (mac[4] << MAC_WT1_MAC4_SHIFT) | (mac[5] << MAC_WT1_MAC5_SHIFT); + sw_write_reg(SWITCH_REG_MAC_WT1, t); + + t = (mac[0] << MAC_WT0_MAC0_SHIFT) | (mac[1] << MAC_WT0_MAC1_SHIFT) | + MAC_WT0_MAWC | MAC_WT0_WVE | (priv->vlan_no<<3); + + sw_write_reg(SWITCH_REG_MAC_WT0, t); + + while (!(sw_read_reg(SWITCH_REG_MAC_WT0) & MAC_WT0_MWD)) + ; +} + static void adm5120_set_vlan(char *matrix) { unsigned long val; @@ -577,40 +734,87 @@ static void adm5120_set_vlan(char *matrix) sw_write_reg(SWITCH_REG_VLAN_G2, val); /* Now set/update the port vs. device lookup table */ - for (port=0; portnapi); } -static int adm5120_switch_open(struct net_device *dev) +static inline void adm5120_if_napi_disable(struct net_device *dev) +{ + struct adm5120_if_priv *priv = netdev_priv(dev); + napi_disable(&priv->napi); +} +#else +static inline void adm5120_if_napi_enable(struct net_device *dev) {} +static inline void adm5120_if_napi_disable(struct net_device *dev) {} +#endif /* CONFIG_ADM5120_SWITCH_NAPI */ + +static int adm5120_if_open(struct net_device *dev) { u32 t; + int err; int i; - netif_start_queue(dev); + adm5120_if_napi_enable(dev); + + err = request_irq(dev->irq, adm5120_switch_irq, IRQF_SHARED, + dev->name, dev); + if (err) { + SW_ERR("unable to get irq for %s\n", dev->name); + goto err; + } + if (!sw_used++) /* enable interrupts on first open */ sw_int_unmask(SWITCH_INTS_USED); @@ -623,16 +827,22 @@ static int adm5120_switch_open(struct net_device *dev) } sw_write_reg(SWITCH_REG_PORT_CONF0, t); + netif_start_queue(dev); + return 0; + +err: + adm5120_if_napi_disable(dev); + return err; } -static int adm5120_switch_stop(struct net_device *dev) +static int adm5120_if_stop(struct net_device *dev) { u32 t; int i; - if (!--sw_used) - sw_int_mask(SWITCH_INTS_USED); + netif_stop_queue(dev); + adm5120_if_napi_disable(dev); /* disable port if not assigned to other devices */ t = sw_read_reg(SWITCH_REG_PORT_CONF0); @@ -643,19 +853,25 @@ static int adm5120_switch_stop(struct net_device *dev) } sw_write_reg(SWITCH_REG_PORT_CONF0, t); - netif_stop_queue(dev); + if (!--sw_used) + sw_int_mask(SWITCH_INTS_USED); + + free_irq(dev->irq, dev); + return 0; } -static int adm5120_sw_start_xmit(struct sk_buff *skb, struct net_device *dev) +static int adm5120_if_hard_start_xmit(struct sk_buff *skb, + struct net_device *dev) { struct dma_desc *desc; - struct adm5120_sw *priv = netdev_priv(dev); + struct adm5120_if_priv *priv = netdev_priv(dev); unsigned int entry; unsigned long data; + int i; /* lock switch irq */ - spin_lock_irq(&sw_lock); + spin_lock_irq(&tx_lock); /* calculate the next TX descriptor entry. */ entry = cur_txl % TX_RING_SIZE; @@ -664,6 +880,7 @@ static int adm5120_sw_start_xmit(struct sk_buff *skb, struct net_device *dev) if (desc->buf1 & DESC_OWN) { /* We want to write a packet but the TX queue is still * occupied by the DMA. We are faster than the DMA... */ + SW_DBG("%s unable to transmit, packet dopped\n", dev->name); dev_kfree_skb(skb); dev->stats.tx_dropped++; return 0; @@ -674,8 +891,8 @@ static int adm5120_sw_start_xmit(struct sk_buff *skb, struct net_device *dev) data |= DESC_ADDR(skb->data); desc->misc = - ((skb->lenlen) << DESC_PKTLEN_SHIFT) | - (0x1 << priv->port); + ((skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len) << DESC_PKTLEN_SHIFT) | + (0x1 << priv->vlan_no); desc->buflen = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len; @@ -684,29 +901,32 @@ static int adm5120_sw_start_xmit(struct sk_buff *skb, struct net_device *dev) cur_txl++; if (cur_txl == dirty_txl + TX_QUEUE_LEN) { - /* FIXME: stop queue for all devices */ - netif_stop_queue(dev); + for (i = 0; i < SWITCH_NUM_PORTS; i++) { + if (!adm5120_devs[i]) + continue; + netif_stop_queue(adm5120_devs[i]); + } } dev->trans_start = jiffies; - spin_unlock_irq(&sw_lock); + spin_unlock_irq(&tx_lock); return 0; } -static void adm5120_tx_timeout(struct net_device *dev) +static void adm5120_if_tx_timeout(struct net_device *dev) { - SW_INFO("TX timeout on %s\n",dev->name); + SW_INFO("TX timeout on %s\n", dev->name); } -static void adm5120_set_multicast_list(struct net_device *dev) +static void adm5120_if_set_multicast_list(struct net_device *dev) { - struct adm5120_sw *priv = netdev_priv(dev); + struct adm5120_if_priv *priv = netdev_priv(dev); u32 ports; u32 t; - ports = adm5120_eth_vlans[priv->port] & SWITCH_PORTS_NOCPU; + ports = adm5120_eth_vlans[priv->vlan_no] & SWITCH_PORTS_NOCPU; t = sw_read_reg(SWITCH_REG_CPUP_CONF); if (dev->flags & IFF_PROMISC) @@ -742,53 +962,39 @@ static void adm5120_set_multicast_list(struct net_device *dev) /* to the CPU, the Bridge Test Mode has to be activated. */ /* Check if there is any vlan in promisc mode. */ - if (t & (SWITCH_PORTS_NOCPU << CPUP_CONF_DUNP_SHIFT)) - t &= ~CPUP_CONF_BTM; /* Disable Bridge Testing Mode */ - else + if (~t & (SWITCH_PORTS_NOCPU << CPUP_CONF_DUNP_SHIFT)) t |= CPUP_CONF_BTM; /* Enable Bridge Testing Mode */ + else + t &= ~CPUP_CONF_BTM; /* Disable Bridge Testing Mode */ sw_write_reg(SWITCH_REG_CPUP_CONF, t); } -static void adm5120_write_mac(struct net_device *dev) +static int adm5120_if_set_mac_address(struct net_device *dev, void *p) { - struct adm5120_sw *priv = netdev_priv(dev); - unsigned char *mac = dev->dev_addr; - u32 t; - - t = mac[2] | (mac[3] << MAC_WT1_MAC3_SHIFT) | - (mac[4] << MAC_WT1_MAC4_SHIFT) | (mac[5] << MAC_WT1_MAC4_SHIFT); - sw_write_reg(SWITCH_REG_MAC_WT1, t); - - t = (mac[0] << MAC_WT0_MAC0_SHIFT) | (mac[1] << MAC_WT0_MAC1_SHIFT) | - MAC_WT0_MAWC | MAC_WT0_WVE | (priv->port<<3); + int ret; - sw_write_reg(SWITCH_REG_MAC_WT0, t); - - while (!(sw_read_reg(SWITCH_REG_MAC_WT0) & MAC_WT0_MWD)); -} + ret = eth_mac_addr(dev, p); + if (ret) + return ret; -static int adm5120_sw_set_mac_address(struct net_device *dev, void *p) -{ - struct sockaddr *addr = p; - - memcpy(dev->dev_addr, addr->sa_data, dev->addr_len); adm5120_write_mac(dev); return 0; } -static int adm5120_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) +static int adm5120_if_do_ioctl(struct net_device *dev, struct ifreq *rq, + int cmd) { int err; struct adm5120_sw_info info; - struct adm5120_sw *priv = netdev_priv(dev); + struct adm5120_if_priv *priv = netdev_priv(dev); - switch(cmd) { + switch (cmd) { case SIOCGADMINFO: info.magic = 0x5120; info.ports = adm5120_nrdevs; - info.vlan = priv->port; + info.vlan = priv->vlan_no; err = copy_to_user(rq->ifr_data, &info, sizeof(info)); if (err) return -EFAULT; @@ -808,50 +1014,49 @@ static int adm5120_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) if (err) return -EFAULT; break; - case SIOCGETBW: - err = copy_to_user(rq->ifr_data, bw_matrix, sizeof(bw_matrix)); - if (err) - return -EFAULT; - break; - case SIOCSETBW: - if (!capable(CAP_NET_ADMIN)) - return -EPERM; - err = copy_from_user(bw_matrix, rq->ifr_data, sizeof(bw_matrix)); - if (err) - return -EFAULT; - adm5120_set_bw(bw_matrix); - break; default: return -EOPNOTSUPP; } return 0; } -static void adm5120_dma_tx_init(struct dma_desc *desc, struct sk_buff **skbl, - int num) -{ - memset(desc, 0, num * sizeof(*desc)); - desc[num-1].buf1 |= DESC_EOR; - memset(skbl, 0, sizeof(struct skb*)*num); -} +static const struct net_device_ops adm5120sw_netdev_ops = { + .ndo_open = adm5120_if_open, + .ndo_stop = adm5120_if_stop, + .ndo_start_xmit = adm5120_if_hard_start_xmit, + .ndo_set_multicast_list = adm5120_if_set_multicast_list, + .ndo_do_ioctl = adm5120_if_do_ioctl, + .ndo_tx_timeout = adm5120_if_tx_timeout, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = adm5120_if_set_mac_address, +}; -static void adm5120_dma_rx_init(struct dma_desc *desc, struct sk_buff **skbl, - int num) +static struct net_device *adm5120_if_alloc(void) { - int i; + struct net_device *dev; + struct adm5120_if_priv *priv; - memset(desc, 0, num * sizeof(*desc)); - for (i=0; idev = dev; + + dev->irq = ADM5120_IRQ_SWITCH; + dev->netdev_ops = &adm5120sw_netdev_ops; + dev->watchdog_timeo = TX_TIMEOUT; + +#ifdef CONFIG_ADM5120_SWITCH_NAPI + netif_napi_add(dev, &priv->napi, adm5120_if_poll, 64); +#endif + + return dev; } +/* ------------------------------------------------------------------------ */ + static void adm5120_switch_cleanup(void) { int i; @@ -863,51 +1068,19 @@ static void adm5120_switch_cleanup(void) struct net_device *dev = adm5120_devs[i]; if (dev) { unregister_netdev(dev); - free_irq(ADM5120_IRQ_SWITCH, dev); free_netdev(dev); } } - /* cleanup TX ring */ - if (txl_skbuff) { - for (i = 0; i < TX_RING_SIZE; i++) - if (txl_skbuff[i]) - kfree_skb(txl_skbuff[i]); - kfree(txl_skbuff); - } - - if (txl_descs) - dma_free_coherent(NULL, TX_DESCS_SIZE, txl_descs, - txl_descs_dma); - - /* cleanup RX ring */ - if (rxl_skbuff) { - for (i = 0; i < RX_RING_SIZE; i++) - if (rxl_skbuff[i]) - kfree_skb(rxl_skbuff[i]); - kfree(rxl_skbuff); - } - - if (rxl_descs) - dma_free_coherent(NULL, RX_DESCS_SIZE, rxl_descs, - rxl_descs_dma); - - free_irq(ADM5120_IRQ_SWITCH, &sw_dev); + adm5120_switch_tx_ring_free(); + adm5120_switch_rx_ring_free(); } -static int __init adm5120_switch_init(void) +static int __init adm5120_switch_probe(struct platform_device *pdev) { - struct net_device *dev; u32 t; int i, err; - err = request_irq(ADM5120_IRQ_SWITCH, adm5120_switch_irq, - (IRQF_SHARED | IRQF_DISABLED), "switch", &sw_dev); - if (err) { - SW_ERR("request_irq failed with error %d\n", err); - goto err; - } - adm5120_nrdevs = adm5120_eth_num_ports; t = CPUP_CONF_DCPUP | CPUP_CONF_CRCP | @@ -927,7 +1100,7 @@ static int __init adm5120_switch_init(void) (SWITCH_PORTS_PHY << PHY_CNTL2_PHYR_SHIFT) | (SWITCH_PORTS_PHY << PHY_CNTL2_AMDIX_SHIFT) | PHY_CNTL2_RMAE; - SW_WRITE_REG(PHY_CNTL2, t); + sw_write_reg(SWITCH_REG_PHY_CNTL2, t); t = sw_read_reg(SWITCH_REG_PHY_CNTL3); t |= PHY_CNTL3_RNT; @@ -939,49 +1112,16 @@ static int __init adm5120_switch_init(void) sw_int_mask(SWITCH_INTS_ALL); sw_int_ack(SWITCH_INTS_ALL); - /* init RX ring */ - cur_rxl = dirty_rxl = 0; - rxl_descs = dma_alloc_coherent(NULL, RX_DESCS_SIZE, &rxl_descs_dma, - GFP_ATOMIC); - if (!rxl_descs) { - err = -ENOMEM; - goto err; - } - - rxl_skbuff = kzalloc(RX_SKBS_SIZE, GFP_KERNEL); - if (!rxl_skbuff) { - err = -ENOMEM; - goto err; - } - - for (i = 0; i < RX_RING_SIZE; i++) { - struct sk_buff *skb; - skb = alloc_skb(SKB_ALLOC_LEN, GFP_ATOMIC); - if (!skb) { - err = -ENOMEM; - goto err; - } - rxl_skbuff[i] = skb; - skb_reserve(skb, SKB_RESERVE_LEN); - } - - /* init TX ring */ - cur_txl = dirty_txl = 0; - txl_descs = dma_alloc_coherent(NULL, TX_DESCS_SIZE, &txl_descs_dma, - GFP_ATOMIC); - if (!txl_descs) { - err = -ENOMEM; + err = adm5120_switch_rx_ring_alloc(); + if (err) goto err; - } - txl_skbuff = kzalloc(TX_SKBS_SIZE, GFP_KERNEL); - if (!txl_skbuff) { - err = -ENOMEM; + err = adm5120_switch_tx_ring_alloc(); + if (err) goto err; - } - adm5120_dma_tx_init(txl_descs, txl_skbuff, TX_RING_SIZE); - adm5120_dma_rx_init(rxl_descs, rxl_skbuff, RX_RING_SIZE); + adm5120_switch_tx_ring_reset(txl_descs, txl_skbuff, TX_RING_SIZE); + adm5120_switch_rx_ring_reset(rxl_descs, rxl_skbuff, RX_RING_SIZE); sw_write_reg(SWITCH_REG_SHDA, 0); sw_write_reg(SWITCH_REG_SLDA, KSEG1ADDR(txl_descs)); @@ -989,35 +1129,20 @@ static int __init adm5120_switch_init(void) sw_write_reg(SWITCH_REG_RLDA, KSEG1ADDR(rxl_descs)); for (i = 0; i < SWITCH_NUM_PORTS; i++) { - adm5120_devs[i] = alloc_etherdev(sizeof(struct adm5120_sw)); - if (!adm5120_devs[i]) { + struct net_device *dev; + struct adm5120_if_priv *priv; + + dev = adm5120_if_alloc(); + if (!dev) { err = -ENOMEM; goto err; } - dev = adm5120_devs[i]; - err = request_irq(ADM5120_IRQ_SWITCH, adm5120_poll_irq, - (IRQF_SHARED | IRQF_DISABLED), dev->name, dev); - if (err) { - SW_ERR("unable to get irq for %s\n", dev->name); - goto err; - } + adm5120_devs[i] = dev; + priv = netdev_priv(dev); - SET_MODULE_OWNER(dev); - memset(netdev_priv(dev), 0, sizeof(struct adm5120_sw)); - ((struct adm5120_sw*)netdev_priv(dev))->port = i; - dev->base_addr = ADM5120_SWITCH_BASE; - dev->irq = ADM5120_IRQ_SWITCH; - dev->open = adm5120_switch_open; - dev->hard_start_xmit = adm5120_sw_start_xmit; - dev->stop = adm5120_switch_stop; - dev->set_multicast_list = adm5120_set_multicast_list; - dev->do_ioctl = adm5120_do_ioctl; - dev->tx_timeout = adm5120_tx_timeout; - dev->watchdog_timeo = TX_TIMEOUT; - dev->set_mac_address = adm5120_sw_set_mac_address; - dev->poll = adm5120_switch_poll; - dev->weight = 64; + priv->vlan_no = i; + priv->port_mask = adm5120_eth_vlans[i]; memcpy(dev->dev_addr, adm5120_eth_macs[i], 6); adm5120_write_mac(dev); @@ -1028,7 +1153,6 @@ static int __init adm5120_switch_init(void) dev->name, err); goto err; } - SW_INFO("%s created for switch port%d\n", dev->name, i); } /* setup vlan/port mapping after devs are filled up */ @@ -1048,10 +1172,41 @@ err: return err; } -static void __exit adm5120_switch_exit(void) +static int adm5120_switch_remove(struct platform_device *dev) { adm5120_switch_cleanup(); + return 0; +} + +static struct platform_driver adm5120_switch_driver = { + .probe = adm5120_switch_probe, + .remove = adm5120_switch_remove, + .driver = { + .name = DRV_NAME, + }, +}; + +/* -------------------------------------------------------------------------- */ + +static int __init adm5120_switch_mod_init(void) +{ + int err; + + pr_info(DRV_DESC " version " DRV_VERSION "\n"); + err = platform_driver_register(&adm5120_switch_driver); + + return err; +} + +static void __exit adm5120_switch_mod_exit(void) +{ + platform_driver_unregister(&adm5120_switch_driver); } -module_init(adm5120_switch_init); -module_exit(adm5120_switch_exit); +module_init(adm5120_switch_mod_init); +module_exit(adm5120_switch_mod_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Gabor Juhos "); +MODULE_DESCRIPTION(DRV_DESC); +MODULE_VERSION(DRV_VERSION);