diff --git a/target/linux/adm5120/files/arch/mips/adm5120/board.c b/target/linux/adm5120/files/arch/mips/adm5120/board.c index 1d0cc6618..5f809a16e 100644 --- a/target/linux/adm5120/files/arch/mips/adm5120/board.c +++ b/target/linux/adm5120/files/arch/mips/adm5120/board.c @@ -98,6 +98,9 @@ static int __init adm5120_board_setup(void) amba_device_register(&adm5120_uart0_device, &iomem_resource); amba_device_register(&adm5120_uart1_device, &iomem_resource); + /* register built-in ethernet switch */ + platform_device_register(&adm5120_switch_device); + /* setup PCI irq map */ adm5120_pci_set_irq_map(board->pci_nr_irqs, board->pci_irq_map); diff --git a/target/linux/adm5120/files/arch/mips/adm5120/platform.c b/target/linux/adm5120/files/arch/mips/adm5120/platform.c index 175e1a5d8..6250ab603 100644 --- a/target/linux/adm5120/files/arch/mips/adm5120/platform.c +++ b/target/linux/adm5120/files/arch/mips/adm5120/platform.c @@ -61,16 +61,30 @@ unsigned char adm5120_eth_vlans[6] = { 0x41, 0x42, 0x44, 0x48, 0x50, 0x60 }; EXPORT_SYMBOL_GPL(adm5120_eth_vlans); +#endif -#else /* Built-in ethernet switch */ +struct resource adm5120_switch_resources[] = { + [0] = { + .start = ADM5120_SWITCH_BASE, + .end = ADM5120_SWITCH_BASE+ADM5120_SWITCH_SIZE-1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = ADM5120_IRQ_SWITCH, + .end = ADM5120_IRQ_SWITCH, + .flags = IORESOURCE_IRQ, + }, +}; + struct adm5120_switch_platform_data adm5120_switch_data; struct platform_device adm5120_switch_device = { .name = "adm5120-switch", .id = -1, + .num_resources = ARRAY_SIZE(adm5120_switch_resources), + .resource = adm5120_switch_resources, .dev.platform_data = &adm5120_switch_data, }; -#endif /* USB Host Controller */ struct resource adm5120_hcd_resources[] = { diff --git a/target/linux/adm5120/files/drivers/net/adm5120sw.c b/target/linux/adm5120/files/drivers/net/adm5120sw.c index e354a35a6..877542699 100644 --- a/target/linux/adm5120/files/drivers/net/adm5120sw.c +++ b/target/linux/adm5120/files/drivers/net/adm5120sw.c @@ -1,23 +1,29 @@ /* - * ADM5120 built in ethernet switch driver + * ADM5120 built-in ethernet switch driver * - * Copyright Jeroen Vreeken (pe1rxq@amsat.org), 2005 + * Copyright (C) 2007 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 @@ -39,14 +45,13 @@ #define DRV_DESC "ADM5120 built-in ethernet switch driver" #define DRV_VERSION "0.1.0" -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 @@ -83,10 +88,15 @@ 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 { + unsigned int vlan_no; + unsigned int port_mask; +}; + struct dma_desc { __u32 buf1; #define DESC_OWN (1UL << 31) /* Owned by the switch */ @@ -117,28 +127,8 @@ 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]; @@ -159,10 +149,7 @@ 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 spinlock_t tx_lock = SPIN_LOCK_UNLOCKED; /* ------------------------------------------------------------------------ */ @@ -208,6 +195,21 @@ 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) @@ -386,8 +388,6 @@ 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]; @@ -430,7 +430,11 @@ static int adm5120_switch_rx(int limit) dma_cache_wback_inv((unsigned long)skb->data, skb->len); +#ifdef CONFIG_ADM5120_SWITCH_USE_NAPI netif_receive_skb(skb); +#else + netif_rx(skb); +#endif rdev->last_rx = jiffies; rdev->stats.rx_packets++; @@ -456,12 +460,11 @@ static int adm5120_switch_rx(int limit) return done; } - 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]; @@ -481,7 +484,6 @@ 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]) @@ -489,14 +491,22 @@ static void adm5120_switch_tx(void) netif_wake_queue(adm5120_devs[i]); } } + spin_unlock(&tx_lock); } +#ifdef CONFIG_ADM5120_SWITCH_NAPI static int adm5120_if_poll(struct net_device *dev, int *budget) { int limit = min(dev->quota, *budget); int done; u32 status; + sw_int_ack(SWITCH_INTS_POLL); + + SW_DBG("%s: processing TX ring\n", dev->name); + adm5120_switch_tx(); + + SW_DBG("%s: processing RX ring\n", dev->name); done = adm5120_switch_rx(limit); *budget -= done; @@ -504,74 +514,53 @@ static int adm5120_if_poll(struct net_device *dev, int *budget) status = sw_int_status() & SWITCH_INTS_POLL; if ((done < limit) && (!status)) { - SW_DBG("disable polling mode for %s\n", poll_dev->name); + SW_DBG("disable polling mode for %s\n", dev->name); netif_rx_complete(dev); sw_int_unmask(SWITCH_INTS_POLL); return 0; } + SW_DBG("%s still in polling mode, done=%d, status=%x\n", + dev->name, done, status); return 1; } +#endif /* CONFIG_ADM5120_SWITCH_USE_NAPI */ -static irqreturn_t adm5120_poll_irq(int irq, void *dev_id) -{ - struct net_device *dev = dev_id; - u32 status; - - status = sw_int_status(); - status &= SWITCH_INTS_POLL; - if (!status) - return IRQ_NONE; - - sw_dump_intr_mask("poll ints", status); - - SW_DBG("enable polling mode for %s\n", dev->name); - sw_int_mask(SWITCH_INTS_POLL); - netif_rx_schedule(dev); - - return IRQ_HANDLED; -} 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; + sw_dump_intr_mask("poll ints", status); + SW_DBG("enable polling mode for %s\n", dev->name); + sw_int_mask(SWITCH_INTS_POLL); + netif_rx_schedule(dev); + } +#else sw_int_ack(status); - if (status & SWITCH_INT_SLD) { - spin_lock(&sw_lock); - adm5120_switch_tx(); - spin_unlock(&sw_lock); + if (status & (SWITCH_INT_RLD | SWITCH_INT_LDF)) { + adm5120_switch_rx(RX_RING_SIZE); } + if (status & SWITCH_INT_SLD) { + adm5120_switch_tx(); + } +#endif + return IRQ_HANDLED; } -static void adm5120_set_vlan(char *matrix) -{ - unsigned long val; - int vlan_port, port; - - val = matrix[0] + (matrix[1]<<8) + (matrix[2]<<16) + (matrix[3]<<24); - sw_write_reg(SWITCH_REG_VLAN_G1, val); - val = matrix[4] + (matrix[5]<<8); - sw_write_reg(SWITCH_REG_VLAN_G2, val); - - /* Now set/update the port vs. device lookup table */ - for (port=0; portdev_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->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; + int vlan_port, port; + + val = matrix[0] + (matrix[1]<<8) + (matrix[2]<<16) + (matrix[3]<<24); + sw_write_reg(SWITCH_REG_VLAN_G1, val); + val = matrix[4] + (matrix[5]<<8); + sw_write_reg(SWITCH_REG_VLAN_G2, val); + + /* Now set/update the port vs. device lookup table */ + for (port=0; portirq, adm5120_poll_irq, + err = request_irq(dev->irq, adm5120_switch_irq, (IRQF_SHARED | IRQF_DISABLED), dev->name, dev); if (err) { SW_ERR("unable to get irq for %s\n", dev->name); @@ -776,12 +840,12 @@ 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; /* 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; @@ -790,6 +854,7 @@ static int adm5120_if_hard_start_xmit(struct sk_buff *skb, 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; @@ -801,7 +866,7 @@ static int adm5120_if_hard_start_xmit(struct sk_buff *skb, desc->misc = ((skb->lenlen) << DESC_PKTLEN_SHIFT) | - (0x1 << priv->port); + (0x1 << priv->vlan_no); desc->buflen = skb->len < ETH_ZLEN ? ETH_ZLEN : skb->len; @@ -816,7 +881,7 @@ static int adm5120_if_hard_start_xmit(struct sk_buff *skb, dev->trans_start = jiffies; - spin_unlock_irq(&sw_lock); + spin_unlock_irq(&tx_lock); return 0; } @@ -826,13 +891,13 @@ static void adm5120_if_tx_timeout(struct net_device *dev) 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) @@ -877,24 +942,6 @@ static void adm5120_set_multicast_list(struct net_device *dev) } -static void adm5120_write_mac(struct net_device *dev) -{ - 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); - - sw_write_reg(SWITCH_REG_MAC_WT0, t); - - while (!(sw_read_reg(SWITCH_REG_MAC_WT0) & MAC_WT0_MWD)); -} - static int adm5120_if_set_mac_address(struct net_device *dev, void *p) { struct sockaddr *addr = p; @@ -904,17 +951,18 @@ static int adm5120_if_set_mac_address(struct net_device *dev, void *p) return 0; } -static int adm5120_if_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) { 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; @@ -934,19 +982,6 @@ static int adm5120_if_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; } @@ -956,7 +991,7 @@ static int adm5120_if_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd static struct net_device *adm5120_if_alloc(void) { struct net_device *dev; - struct adm5120_sw *priv; + struct adm5120_if_priv *priv; dev = alloc_etherdev(sizeof(*priv)); if (!dev) @@ -966,19 +1001,23 @@ static struct net_device *adm5120_if_alloc(void) dev->open = adm5120_if_open; dev->hard_start_xmit = adm5120_if_hard_start_xmit; dev->stop = adm5120_if_stop; - dev->set_multicast_list = adm5120_set_multicast_list; + dev->set_multicast_list = adm5120_if_set_multicast_list; dev->do_ioctl = adm5120_if_do_ioctl; dev->tx_timeout = adm5120_if_tx_timeout; dev->watchdog_timeo = TX_TIMEOUT; dev->set_mac_address = adm5120_if_set_mac_address; +#ifdef CONFIG_ADM5120_SWITCH_NAPI dev->poll = adm5120_if_poll; dev->weight = 64; +#endif SET_MODULE_OWNER(dev); return dev; } +/* ------------------------------------------------------------------------ */ + static void adm5120_switch_cleanup(void) { int i; @@ -996,22 +1035,13 @@ static void adm5120_switch_cleanup(void) adm5120_switch_tx_ring_free(); adm5120_switch_rx_ring_free(); - - free_irq(ADM5120_IRQ_SWITCH, &sw_dev); } -static int __init adm5120_switch_init(void) +static int __init adm5120_switch_probe(struct platform_device *pdev) { 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 | @@ -1061,7 +1091,7 @@ static int __init adm5120_switch_init(void) for (i = 0; i < SWITCH_NUM_PORTS; i++) { struct net_device *dev; - struct adm5120_sw *priv; + struct adm5120_if_priv *priv; dev = adm5120_if_alloc(); if (!dev) { @@ -1072,7 +1102,8 @@ static int __init adm5120_switch_init(void) adm5120_devs[i] = dev; priv = netdev_priv(dev); - priv->port = i; + priv->vlan_no = i; + priv->port_mask = adm5120_eth_vlans[i]; memcpy(dev->dev_addr, adm5120_eth_macs[i], 6); adm5120_write_mac(dev); @@ -1102,10 +1133,41 @@ err: return err; } -static void __exit adm5120_switch_exit(void) +static int adm5120_switch_remove(struct platform_device *dev) { adm5120_switch_cleanup(); + return 0; } -module_init(adm5120_switch_init); -module_exit(adm5120_switch_exit); +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_mod_init); +module_exit(adm5120_switch_mod_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_AUTHOR("Gabor Juhos "); +MODULE_DESCRIPTION(DRV_DESC); +MODULE_VERSION(DRV_VERSION); diff --git a/target/linux/adm5120/files/drivers/net/adm5120sw.h b/target/linux/adm5120/files/drivers/net/adm5120sw.h index 34f121374..c7c5ceddc 100644 --- a/target/linux/adm5120/files/drivers/net/adm5120sw.h +++ b/target/linux/adm5120/files/drivers/net/adm5120sw.h @@ -10,15 +10,9 @@ #ifndef _INCLUDE_ADM5120SW_H_ #define _INCLUDE_ADM5120SW_H_ -struct adm5120_sw { - int port; -}; - #define SIOCSMATRIX SIOCDEVPRIVATE #define SIOCGMATRIX SIOCDEVPRIVATE+1 #define SIOCGADMINFO SIOCDEVPRIVATE+2 -#define SIOCGETBW SIOCDEVPRIVATE+3 -#define SIOCSETBW SIOCDEVPRIVATE+4 struct adm5120_sw_info { u16 magic; diff --git a/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_switch.h b/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_switch.h index d185ce531..a40175b03 100644 --- a/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_switch.h +++ b/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_switch.h @@ -164,12 +164,12 @@ #define MAC_WT0_MWD_SHIFT 1 #define MAC_WT0_MWD BIT(1) /* MAC write done */ #define MAC_WT0_WFB BIT(2) /* Write Filter Bit */ -#define MAC_WT0_WVN_SHIFT 3 +#define MAC_WT0_WVN_SHIFT 3 /* Write Vlan Number shift */ #define MAC_WT0_WVE BIT(6) /* Write VLAN enable */ #define MAC_WT0_WPMN_SHIFT 7 #define MAC_WT0_WAF_SHIFT 13 /* Write Age Field shift */ #define MAC_WT0_WAF_EMPTY 0 -#define MAC_WT0_WAF_STATIC 7 +#define MAC_WT0_WAF_STATIC 7 /* age: static */ #define MAC_WT0_MAC0_SHIFT 16 #define MAC_WT0_MAC1_SHIFT 24