1098fde11Schas williams - CONTRACTOR /* 21da177e4SLinus Torvalds * nicstar.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Device driver supporting CBR for IDT 77201/77211 "NICStAR" based cards. 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * IMPORTANT: The included file nicstarmac.c was NOT WRITTEN BY ME. 71da177e4SLinus Torvalds * It was taken from the frle-0.22 device driver. 81da177e4SLinus Torvalds * As the file doesn't have a copyright notice, in the file 91da177e4SLinus Torvalds * nicstarmac.copyright I put the copyright notice from the 101da177e4SLinus Torvalds * frle-0.22 device driver. 111da177e4SLinus Torvalds * Some code is based on the nicstar driver by M. Welsh. 121da177e4SLinus Torvalds * 131da177e4SLinus Torvalds * Author: Rui Prior (rprior@inescn.pt) 141da177e4SLinus Torvalds * PowerPC support by Jay Talbott (jay_talbott@mcg.mot.com) April 1999 151da177e4SLinus Torvalds * 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * (C) INESC 1999 18098fde11Schas williams - CONTRACTOR */ 191da177e4SLinus Torvalds 20098fde11Schas williams - CONTRACTOR /* 21098fde11Schas williams - CONTRACTOR * IMPORTANT INFORMATION 221da177e4SLinus Torvalds * 231da177e4SLinus Torvalds * There are currently three types of spinlocks: 241da177e4SLinus Torvalds * 251da177e4SLinus Torvalds * 1 - Per card interrupt spinlock (to protect structures and such) 261da177e4SLinus Torvalds * 2 - Per SCQ scq spinlock 271da177e4SLinus Torvalds * 3 - Per card resource spinlock (to access registers, etc.) 281da177e4SLinus Torvalds * 291da177e4SLinus Torvalds * These must NEVER be grabbed in reverse order. 301da177e4SLinus Torvalds * 31098fde11Schas williams - CONTRACTOR */ 321da177e4SLinus Torvalds 33098fde11Schas williams - CONTRACTOR /* Header files */ 341da177e4SLinus Torvalds 351da177e4SLinus Torvalds #include <linux/module.h> 361da177e4SLinus Torvalds #include <linux/kernel.h> 371da177e4SLinus Torvalds #include <linux/skbuff.h> 381da177e4SLinus Torvalds #include <linux/atmdev.h> 391da177e4SLinus Torvalds #include <linux/atm.h> 401da177e4SLinus Torvalds #include <linux/pci.h> 41864a3ff6Schas williams - CONTRACTOR #include <linux/dma-mapping.h> 421da177e4SLinus Torvalds #include <linux/types.h> 431da177e4SLinus Torvalds #include <linux/string.h> 441da177e4SLinus Torvalds #include <linux/delay.h> 451da177e4SLinus Torvalds #include <linux/init.h> 461da177e4SLinus Torvalds #include <linux/sched.h> 471da177e4SLinus Torvalds #include <linux/timer.h> 481da177e4SLinus Torvalds #include <linux/interrupt.h> 491da177e4SLinus Torvalds #include <linux/bitops.h> 505a0e3ad6STejun Heo #include <linux/slab.h> 51864a3ff6Schas williams - CONTRACTOR #include <linux/idr.h> 521da177e4SLinus Torvalds #include <asm/io.h> 537c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 5460063497SArun Sharma #include <linux/atomic.h> 554c55a462Sdingtianhong #include <linux/etherdevice.h> 561da177e4SLinus Torvalds #include "nicstar.h" 571da177e4SLinus Torvalds #ifdef CONFIG_ATM_NICSTAR_USE_SUNI 581da177e4SLinus Torvalds #include "suni.h" 591da177e4SLinus Torvalds #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ 601da177e4SLinus Torvalds #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 611da177e4SLinus Torvalds #include "idt77105.h" 621da177e4SLinus Torvalds #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ 631da177e4SLinus Torvalds 64098fde11Schas williams - CONTRACTOR /* Additional code */ 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds #include "nicstarmac.c" 671da177e4SLinus Torvalds 68098fde11Schas williams - CONTRACTOR /* Configurable parameters */ 691da177e4SLinus Torvalds 701da177e4SLinus Torvalds #undef PHY_LOOPBACK 711da177e4SLinus Torvalds #undef TX_DEBUG 721da177e4SLinus Torvalds #undef RX_DEBUG 731da177e4SLinus Torvalds #undef GENERAL_DEBUG 741da177e4SLinus Torvalds #undef EXTRA_DEBUG 751da177e4SLinus Torvalds 76098fde11Schas williams - CONTRACTOR /* Do not touch these */ 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds #ifdef TX_DEBUG 791da177e4SLinus Torvalds #define TXPRINTK(args...) printk(args) 801da177e4SLinus Torvalds #else 811da177e4SLinus Torvalds #define TXPRINTK(args...) 821da177e4SLinus Torvalds #endif /* TX_DEBUG */ 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds #ifdef RX_DEBUG 851da177e4SLinus Torvalds #define RXPRINTK(args...) printk(args) 861da177e4SLinus Torvalds #else 871da177e4SLinus Torvalds #define RXPRINTK(args...) 881da177e4SLinus Torvalds #endif /* RX_DEBUG */ 891da177e4SLinus Torvalds 901da177e4SLinus Torvalds #ifdef GENERAL_DEBUG 911da177e4SLinus Torvalds #define PRINTK(args...) printk(args) 921da177e4SLinus Torvalds #else 931da177e4SLinus Torvalds #define PRINTK(args...) 941da177e4SLinus Torvalds #endif /* GENERAL_DEBUG */ 951da177e4SLinus Torvalds 961da177e4SLinus Torvalds #ifdef EXTRA_DEBUG 971da177e4SLinus Torvalds #define XPRINTK(args...) printk(args) 981da177e4SLinus Torvalds #else 991da177e4SLinus Torvalds #define XPRINTK(args...) 1001da177e4SLinus Torvalds #endif /* EXTRA_DEBUG */ 1011da177e4SLinus Torvalds 102098fde11Schas williams - CONTRACTOR /* Macros */ 1031da177e4SLinus Torvalds 1041da177e4SLinus Torvalds #define CMD_BUSY(card) (readl((card)->membase + STAT) & NS_STAT_CMDBZ) 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds #define NS_DELAY mdelay(1) 1071da177e4SLinus Torvalds 108864a3ff6Schas williams - CONTRACTOR #define PTR_DIFF(a, b) ((u32)((unsigned long)(a) - (unsigned long)(b))) 1091da177e4SLinus Torvalds 1101da177e4SLinus Torvalds #ifndef ATM_SKB 1111da177e4SLinus Torvalds #define ATM_SKB(s) (&(s)->atm) 1121da177e4SLinus Torvalds #endif 1131da177e4SLinus Torvalds 114864a3ff6Schas williams - CONTRACTOR #define scq_virt_to_bus(scq, p) \ 115864a3ff6Schas williams - CONTRACTOR (scq->dma + ((unsigned long)(p) - (unsigned long)(scq)->org)) 116864a3ff6Schas williams - CONTRACTOR 117098fde11Schas williams - CONTRACTOR /* Function declarations */ 1181da177e4SLinus Torvalds 1191da177e4SLinus Torvalds static u32 ns_read_sram(ns_dev * card, u32 sram_address); 120098fde11Schas williams - CONTRACTOR static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value, 121098fde11Schas williams - CONTRACTOR int count); 1226c44512dSGreg Kroah-Hartman static int ns_init_card(int i, struct pci_dev *pcidev); 1236c44512dSGreg Kroah-Hartman static void ns_init_card_error(ns_dev * card, int error); 124864a3ff6Schas williams - CONTRACTOR static scq_info *get_scq(ns_dev *card, int size, u32 scd); 125864a3ff6Schas williams - CONTRACTOR static void free_scq(ns_dev *card, scq_info * scq, struct atm_vcc *vcc); 1268728b834SDavid S. Miller static void push_rxbufs(ns_dev *, struct sk_buff *); 1277d12e780SDavid Howells static irqreturn_t ns_irq_handler(int irq, void *dev_id); 1281da177e4SLinus Torvalds static int ns_open(struct atm_vcc *vcc); 1291da177e4SLinus Torvalds static void ns_close(struct atm_vcc *vcc); 1301da177e4SLinus Torvalds static void fill_tst(ns_dev * card, int n, vc_map * vc); 1311da177e4SLinus Torvalds static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb); 1321da177e4SLinus Torvalds static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd, 1331da177e4SLinus Torvalds struct sk_buff *skb); 1341da177e4SLinus Torvalds static void process_tsq(ns_dev * card); 1351da177e4SLinus Torvalds static void drain_scq(ns_dev * card, scq_info * scq, int pos); 1361da177e4SLinus Torvalds static void process_rsq(ns_dev * card); 1371da177e4SLinus Torvalds static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe); 1381da177e4SLinus Torvalds static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb); 1391da177e4SLinus Torvalds static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count); 1401da177e4SLinus Torvalds static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb); 1411da177e4SLinus Torvalds static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb); 1421da177e4SLinus Torvalds static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb); 1431da177e4SLinus Torvalds static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page); 1441da177e4SLinus Torvalds static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg); 145864a3ff6Schas williams - CONTRACTOR #ifdef EXTRA_DEBUG 1461da177e4SLinus Torvalds static void which_list(ns_dev * card, struct sk_buff *skb); 147864a3ff6Schas williams - CONTRACTOR #endif 148e99e88a9SKees Cook static void ns_poll(struct timer_list *unused); 1491da177e4SLinus Torvalds static void ns_phy_put(struct atm_dev *dev, unsigned char value, 1501da177e4SLinus Torvalds unsigned long addr); 1511da177e4SLinus Torvalds static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr); 1521da177e4SLinus Torvalds 153098fde11Schas williams - CONTRACTOR /* Global variables */ 1541da177e4SLinus Torvalds 1551da177e4SLinus Torvalds static struct ns_dev *cards[NS_MAX_CARDS]; 1561da177e4SLinus Torvalds static unsigned num_cards; 15746c4b7a5SBhumika Goyal static const struct atmdev_ops atm_ops = { 1581da177e4SLinus Torvalds .open = ns_open, 1591da177e4SLinus Torvalds .close = ns_close, 1601da177e4SLinus Torvalds .ioctl = ns_ioctl, 1611da177e4SLinus Torvalds .send = ns_send, 1621da177e4SLinus Torvalds .phy_put = ns_phy_put, 1631da177e4SLinus Torvalds .phy_get = ns_phy_get, 1641da177e4SLinus Torvalds .proc_read = ns_proc_read, 1651da177e4SLinus Torvalds .owner = THIS_MODULE, 1661da177e4SLinus Torvalds }; 167098fde11Schas williams - CONTRACTOR 1681da177e4SLinus Torvalds static struct timer_list ns_timer; 1691da177e4SLinus Torvalds static char *mac[NS_MAX_CARDS]; 1701da177e4SLinus Torvalds module_param_array(mac, charp, NULL, 0); 1711da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 1721da177e4SLinus Torvalds 173098fde11Schas williams - CONTRACTOR /* Functions */ 1741da177e4SLinus Torvalds 1756c44512dSGreg Kroah-Hartman static int nicstar_init_one(struct pci_dev *pcidev, 1761da177e4SLinus Torvalds const struct pci_device_id *ent) 1771da177e4SLinus Torvalds { 1781da177e4SLinus Torvalds static int index = -1; 1791da177e4SLinus Torvalds unsigned int error; 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds index++; 1821da177e4SLinus Torvalds cards[index] = NULL; 1831da177e4SLinus Torvalds 1841da177e4SLinus Torvalds error = ns_init_card(index, pcidev); 1851da177e4SLinus Torvalds if (error) { 1861da177e4SLinus Torvalds cards[index--] = NULL; /* don't increment index */ 1871da177e4SLinus Torvalds goto err_out; 1881da177e4SLinus Torvalds } 1891da177e4SLinus Torvalds 1901da177e4SLinus Torvalds return 0; 1911da177e4SLinus Torvalds err_out: 1921da177e4SLinus Torvalds return -ENODEV; 1931da177e4SLinus Torvalds } 1941da177e4SLinus Torvalds 1956c44512dSGreg Kroah-Hartman static void nicstar_remove_one(struct pci_dev *pcidev) 1961da177e4SLinus Torvalds { 1971da177e4SLinus Torvalds int i, j; 1981da177e4SLinus Torvalds ns_dev *card = pci_get_drvdata(pcidev); 1991da177e4SLinus Torvalds struct sk_buff *hb; 2001da177e4SLinus Torvalds struct sk_buff *iovb; 2011da177e4SLinus Torvalds struct sk_buff *lb; 2021da177e4SLinus Torvalds struct sk_buff *sb; 2031da177e4SLinus Torvalds 2041da177e4SLinus Torvalds i = card->index; 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds if (cards[i] == NULL) 2071da177e4SLinus Torvalds return; 2081da177e4SLinus Torvalds 2091da177e4SLinus Torvalds if (card->atmdev->phy && card->atmdev->phy->stop) 2101da177e4SLinus Torvalds card->atmdev->phy->stop(card->atmdev); 2111da177e4SLinus Torvalds 2121da177e4SLinus Torvalds /* Stop everything */ 2131da177e4SLinus Torvalds writel(0x00000000, card->membase + CFG); 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds /* De-register device */ 2161da177e4SLinus Torvalds atm_dev_deregister(card->atmdev); 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds /* Disable PCI device */ 2191da177e4SLinus Torvalds pci_disable_device(pcidev); 2201da177e4SLinus Torvalds 2211da177e4SLinus Torvalds /* Free up resources */ 2221da177e4SLinus Torvalds j = 0; 2231da177e4SLinus Torvalds PRINTK("nicstar%d: freeing %d huge buffers.\n", i, card->hbpool.count); 224098fde11Schas williams - CONTRACTOR while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) { 2251da177e4SLinus Torvalds dev_kfree_skb_any(hb); 2261da177e4SLinus Torvalds j++; 2271da177e4SLinus Torvalds } 2281da177e4SLinus Torvalds PRINTK("nicstar%d: %d huge buffers freed.\n", i, j); 2291da177e4SLinus Torvalds j = 0; 230098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: freeing %d iovec buffers.\n", i, 231098fde11Schas williams - CONTRACTOR card->iovpool.count); 232098fde11Schas williams - CONTRACTOR while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) { 2331da177e4SLinus Torvalds dev_kfree_skb_any(iovb); 2341da177e4SLinus Torvalds j++; 2351da177e4SLinus Torvalds } 2361da177e4SLinus Torvalds PRINTK("nicstar%d: %d iovec buffers freed.\n", i, j); 2371da177e4SLinus Torvalds while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL) 2381da177e4SLinus Torvalds dev_kfree_skb_any(lb); 2391da177e4SLinus Torvalds while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL) 2401da177e4SLinus Torvalds dev_kfree_skb_any(sb); 241864a3ff6Schas williams - CONTRACTOR free_scq(card, card->scq0, NULL); 242098fde11Schas williams - CONTRACTOR for (j = 0; j < NS_FRSCD_NUM; j++) { 2431da177e4SLinus Torvalds if (card->scd2vc[j] != NULL) 244864a3ff6Schas williams - CONTRACTOR free_scq(card, card->scd2vc[j]->scq, card->scd2vc[j]->tx_vcc); 2451da177e4SLinus Torvalds } 246864a3ff6Schas williams - CONTRACTOR idr_destroy(&card->idr); 247ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&card->pcidev->dev, NS_RSQSIZE + NS_RSQ_ALIGNMENT, 248864a3ff6Schas williams - CONTRACTOR card->rsq.org, card->rsq.dma); 249ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&card->pcidev->dev, NS_TSQSIZE + NS_TSQ_ALIGNMENT, 250864a3ff6Schas williams - CONTRACTOR card->tsq.org, card->tsq.dma); 2511da177e4SLinus Torvalds free_irq(card->pcidev->irq, card); 2521da177e4SLinus Torvalds iounmap(card->membase); 2531da177e4SLinus Torvalds kfree(card); 2541da177e4SLinus Torvalds } 2551da177e4SLinus Torvalds 2562f3e2604SArvind Yadav static const struct pci_device_id nicstar_pci_tbl[] = { 2576df7b80cSPeter Huewe { PCI_VDEVICE(IDT, PCI_DEVICE_ID_IDT_IDT77201), 0 }, 2581da177e4SLinus Torvalds {0,} /* terminate list */ 2591da177e4SLinus Torvalds }; 260098fde11Schas williams - CONTRACTOR 2611da177e4SLinus Torvalds MODULE_DEVICE_TABLE(pci, nicstar_pci_tbl); 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds static struct pci_driver nicstar_driver = { 2641da177e4SLinus Torvalds .name = "nicstar", 2651da177e4SLinus Torvalds .id_table = nicstar_pci_tbl, 2661da177e4SLinus Torvalds .probe = nicstar_init_one, 2676c44512dSGreg Kroah-Hartman .remove = nicstar_remove_one, 2681da177e4SLinus Torvalds }; 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds static int __init nicstar_init(void) 2711da177e4SLinus Torvalds { 2721da177e4SLinus Torvalds unsigned error = 0; /* Initialized to remove compile warning */ 2731da177e4SLinus Torvalds 2741da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_init() called.\n"); 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds error = pci_register_driver(&nicstar_driver); 2771da177e4SLinus Torvalds 2781da177e4SLinus Torvalds TXPRINTK("nicstar: TX debug enabled.\n"); 2791da177e4SLinus Torvalds RXPRINTK("nicstar: RX debug enabled.\n"); 2801da177e4SLinus Torvalds PRINTK("nicstar: General debug enabled.\n"); 2811da177e4SLinus Torvalds #ifdef PHY_LOOPBACK 2821da177e4SLinus Torvalds printk("nicstar: using PHY loopback.\n"); 2831da177e4SLinus Torvalds #endif /* PHY_LOOPBACK */ 2841da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_init() returned.\n"); 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds if (!error) { 287e99e88a9SKees Cook timer_setup(&ns_timer, ns_poll, 0); 2881da177e4SLinus Torvalds ns_timer.expires = jiffies + NS_POLL_PERIOD; 2891da177e4SLinus Torvalds add_timer(&ns_timer); 2901da177e4SLinus Torvalds } 2911da177e4SLinus Torvalds 2921da177e4SLinus Torvalds return error; 2931da177e4SLinus Torvalds } 2941da177e4SLinus Torvalds 2951da177e4SLinus Torvalds static void __exit nicstar_cleanup(void) 2961da177e4SLinus Torvalds { 2971da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_cleanup() called.\n"); 2981da177e4SLinus Torvalds 2991da177e4SLinus Torvalds del_timer(&ns_timer); 3001da177e4SLinus Torvalds 3011da177e4SLinus Torvalds pci_unregister_driver(&nicstar_driver); 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_cleanup() returned.\n"); 3041da177e4SLinus Torvalds } 3051da177e4SLinus Torvalds 3061da177e4SLinus Torvalds static u32 ns_read_sram(ns_dev * card, u32 sram_address) 3071da177e4SLinus Torvalds { 3081da177e4SLinus Torvalds unsigned long flags; 3091da177e4SLinus Torvalds u32 data; 3101da177e4SLinus Torvalds sram_address <<= 2; 3111da177e4SLinus Torvalds sram_address &= 0x0007FFFC; /* address must be dword aligned */ 3121da177e4SLinus Torvalds sram_address |= 0x50000000; /* SRAM read command */ 31336ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags); 3141da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 3151da177e4SLinus Torvalds writel(sram_address, card->membase + CMD); 3161da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 3171da177e4SLinus Torvalds data = readl(card->membase + DR0); 3181da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags); 3191da177e4SLinus Torvalds return data; 3201da177e4SLinus Torvalds } 3211da177e4SLinus Torvalds 322098fde11Schas williams - CONTRACTOR static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value, 323098fde11Schas williams - CONTRACTOR int count) 3241da177e4SLinus Torvalds { 3251da177e4SLinus Torvalds unsigned long flags; 3261da177e4SLinus Torvalds int i, c; 3271da177e4SLinus Torvalds count--; /* count range now is 0..3 instead of 1..4 */ 3281da177e4SLinus Torvalds c = count; 3291da177e4SLinus Torvalds c <<= 2; /* to use increments of 4 */ 33036ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags); 3311da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 3321da177e4SLinus Torvalds for (i = 0; i <= c; i += 4) 3331da177e4SLinus Torvalds writel(*(value++), card->membase + i); 3341da177e4SLinus Torvalds /* Note: DR# registers are the first 4 dwords in nicstar's memspace, 3351da177e4SLinus Torvalds so card->membase + DR0 == card->membase */ 3361da177e4SLinus Torvalds sram_address <<= 2; 3371da177e4SLinus Torvalds sram_address &= 0x0007FFFC; 3381da177e4SLinus Torvalds sram_address |= (0x40000000 | count); 3391da177e4SLinus Torvalds writel(sram_address, card->membase + CMD); 3401da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags); 3411da177e4SLinus Torvalds } 3421da177e4SLinus Torvalds 3436c44512dSGreg Kroah-Hartman static int ns_init_card(int i, struct pci_dev *pcidev) 3441da177e4SLinus Torvalds { 3451da177e4SLinus Torvalds int j; 3461da177e4SLinus Torvalds struct ns_dev *card = NULL; 3471da177e4SLinus Torvalds unsigned char pci_latency; 3481da177e4SLinus Torvalds unsigned error; 3491da177e4SLinus Torvalds u32 data; 3501da177e4SLinus Torvalds u32 u32d[4]; 3511da177e4SLinus Torvalds u32 ns_cfg_rctsize; 3521da177e4SLinus Torvalds int bcount; 3531da177e4SLinus Torvalds unsigned long membase; 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds error = 0; 3561da177e4SLinus Torvalds 357098fde11Schas williams - CONTRACTOR if (pci_enable_device(pcidev)) { 3581da177e4SLinus Torvalds printk("nicstar%d: can't enable PCI device\n", i); 3591da177e4SLinus Torvalds error = 2; 3601da177e4SLinus Torvalds ns_init_card_error(card, error); 3611da177e4SLinus Torvalds return error; 3621da177e4SLinus Torvalds } 363ede58ef2Schas williams - CONTRACTOR if (dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(32)) != 0) { 364864a3ff6Schas williams - CONTRACTOR printk(KERN_WARNING 365864a3ff6Schas williams - CONTRACTOR "nicstar%d: No suitable DMA available.\n", i); 366864a3ff6Schas williams - CONTRACTOR error = 2; 367864a3ff6Schas williams - CONTRACTOR ns_init_card_error(card, error); 368864a3ff6Schas williams - CONTRACTOR return error; 369864a3ff6Schas williams - CONTRACTOR } 3701da177e4SLinus Torvalds 371304f0a4eSMarkus Elfring card = kmalloc(sizeof(*card), GFP_KERNEL); 372304f0a4eSMarkus Elfring if (!card) { 373098fde11Schas williams - CONTRACTOR printk 374098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate memory for device structure.\n", 375098fde11Schas williams - CONTRACTOR i); 3761da177e4SLinus Torvalds error = 2; 3771da177e4SLinus Torvalds ns_init_card_error(card, error); 3781da177e4SLinus Torvalds return error; 3791da177e4SLinus Torvalds } 3801da177e4SLinus Torvalds cards[i] = card; 3811da177e4SLinus Torvalds spin_lock_init(&card->int_lock); 3821da177e4SLinus Torvalds spin_lock_init(&card->res_lock); 3831da177e4SLinus Torvalds 3841da177e4SLinus Torvalds pci_set_drvdata(pcidev, card); 3851da177e4SLinus Torvalds 3861da177e4SLinus Torvalds card->index = i; 3871da177e4SLinus Torvalds card->atmdev = NULL; 3881da177e4SLinus Torvalds card->pcidev = pcidev; 3891da177e4SLinus Torvalds membase = pci_resource_start(pcidev, 1); 3901da177e4SLinus Torvalds card->membase = ioremap(membase, NS_IOREMAP_SIZE); 391098fde11Schas williams - CONTRACTOR if (!card->membase) { 3921da177e4SLinus Torvalds printk("nicstar%d: can't ioremap() membase.\n", i); 3931da177e4SLinus Torvalds error = 3; 3941da177e4SLinus Torvalds ns_init_card_error(card, error); 3951da177e4SLinus Torvalds return error; 3961da177e4SLinus Torvalds } 397864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: membase at 0x%p.\n", i, card->membase); 3981da177e4SLinus Torvalds 3991da177e4SLinus Torvalds pci_set_master(pcidev); 4001da177e4SLinus Torvalds 401098fde11Schas williams - CONTRACTOR if (pci_read_config_byte(pcidev, PCI_LATENCY_TIMER, &pci_latency) != 0) { 4021da177e4SLinus Torvalds printk("nicstar%d: can't read PCI latency timer.\n", i); 4031da177e4SLinus Torvalds error = 6; 4041da177e4SLinus Torvalds ns_init_card_error(card, error); 4051da177e4SLinus Torvalds return error; 4061da177e4SLinus Torvalds } 4071da177e4SLinus Torvalds #ifdef NS_PCI_LATENCY 408098fde11Schas williams - CONTRACTOR if (pci_latency < NS_PCI_LATENCY) { 409098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: setting PCI latency timer to %d.\n", i, 410098fde11Schas williams - CONTRACTOR NS_PCI_LATENCY); 411098fde11Schas williams - CONTRACTOR for (j = 1; j < 4; j++) { 412098fde11Schas williams - CONTRACTOR if (pci_write_config_byte 413098fde11Schas williams - CONTRACTOR (pcidev, PCI_LATENCY_TIMER, NS_PCI_LATENCY) != 0) 4141da177e4SLinus Torvalds break; 4151da177e4SLinus Torvalds } 416098fde11Schas williams - CONTRACTOR if (j == 4) { 417098fde11Schas williams - CONTRACTOR printk 418098fde11Schas williams - CONTRACTOR ("nicstar%d: can't set PCI latency timer to %d.\n", 419098fde11Schas williams - CONTRACTOR i, NS_PCI_LATENCY); 4201da177e4SLinus Torvalds error = 7; 4211da177e4SLinus Torvalds ns_init_card_error(card, error); 4221da177e4SLinus Torvalds return error; 4231da177e4SLinus Torvalds } 4241da177e4SLinus Torvalds } 4251da177e4SLinus Torvalds #endif /* NS_PCI_LATENCY */ 4261da177e4SLinus Torvalds 4271da177e4SLinus Torvalds /* Clear timer overflow */ 4281da177e4SLinus Torvalds data = readl(card->membase + STAT); 4291da177e4SLinus Torvalds if (data & NS_STAT_TMROF) 4301da177e4SLinus Torvalds writel(NS_STAT_TMROF, card->membase + STAT); 4311da177e4SLinus Torvalds 4321da177e4SLinus Torvalds /* Software reset */ 4331da177e4SLinus Torvalds writel(NS_CFG_SWRST, card->membase + CFG); 4341da177e4SLinus Torvalds NS_DELAY; 4351da177e4SLinus Torvalds writel(0x00000000, card->membase + CFG); 4361da177e4SLinus Torvalds 4371da177e4SLinus Torvalds /* PHY reset */ 4381da177e4SLinus Torvalds writel(0x00000008, card->membase + GP); 4391da177e4SLinus Torvalds NS_DELAY; 4401da177e4SLinus Torvalds writel(0x00000001, card->membase + GP); 4411da177e4SLinus Torvalds NS_DELAY; 4421da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4431da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000100, card->membase + CMD); /* Sync UTOPIA with SAR clock */ 4441da177e4SLinus Torvalds NS_DELAY; 4451da177e4SLinus Torvalds 4461da177e4SLinus Torvalds /* Detect PHY type */ 4471da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4481da177e4SLinus Torvalds writel(NS_CMD_READ_UTILITY | 0x00000200, card->membase + CMD); 4491da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4501da177e4SLinus Torvalds data = readl(card->membase + DR0); 4511da177e4SLinus Torvalds switch (data) { 4521da177e4SLinus Torvalds case 0x00000009: 4531da177e4SLinus Torvalds printk("nicstar%d: PHY seems to be 25 Mbps.\n", i); 4541da177e4SLinus Torvalds card->max_pcr = ATM_25_PCR; 4551da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4561da177e4SLinus Torvalds writel(0x00000008, card->membase + DR0); 4571da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000200, card->membase + CMD); 4581da177e4SLinus Torvalds /* Clear an eventual pending interrupt */ 4591da177e4SLinus Torvalds writel(NS_STAT_SFBQF, card->membase + STAT); 4601da177e4SLinus Torvalds #ifdef PHY_LOOPBACK 4611da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4621da177e4SLinus Torvalds writel(0x00000022, card->membase + DR0); 4631da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000202, card->membase + CMD); 4641da177e4SLinus Torvalds #endif /* PHY_LOOPBACK */ 4651da177e4SLinus Torvalds break; 4661da177e4SLinus Torvalds case 0x00000030: 4671da177e4SLinus Torvalds case 0x00000031: 4681da177e4SLinus Torvalds printk("nicstar%d: PHY seems to be 155 Mbps.\n", i); 4691da177e4SLinus Torvalds card->max_pcr = ATM_OC3_PCR; 4701da177e4SLinus Torvalds #ifdef PHY_LOOPBACK 4711da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4721da177e4SLinus Torvalds writel(0x00000002, card->membase + DR0); 4731da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000205, card->membase + CMD); 4741da177e4SLinus Torvalds #endif /* PHY_LOOPBACK */ 4751da177e4SLinus Torvalds break; 4761da177e4SLinus Torvalds default: 4771da177e4SLinus Torvalds printk("nicstar%d: unknown PHY type (0x%08X).\n", i, data); 4781da177e4SLinus Torvalds error = 8; 4791da177e4SLinus Torvalds ns_init_card_error(card, error); 4801da177e4SLinus Torvalds return error; 4811da177e4SLinus Torvalds } 4821da177e4SLinus Torvalds writel(0x00000000, card->membase + GP); 4831da177e4SLinus Torvalds 4841da177e4SLinus Torvalds /* Determine SRAM size */ 4851da177e4SLinus Torvalds data = 0x76543210; 4861da177e4SLinus Torvalds ns_write_sram(card, 0x1C003, &data, 1); 4871da177e4SLinus Torvalds data = 0x89ABCDEF; 4881da177e4SLinus Torvalds ns_write_sram(card, 0x14003, &data, 1); 4891da177e4SLinus Torvalds if (ns_read_sram(card, 0x14003) == 0x89ABCDEF && 4901da177e4SLinus Torvalds ns_read_sram(card, 0x1C003) == 0x76543210) 4911da177e4SLinus Torvalds card->sram_size = 128; 4921da177e4SLinus Torvalds else 4931da177e4SLinus Torvalds card->sram_size = 32; 4941da177e4SLinus Torvalds PRINTK("nicstar%d: %dK x 32bit SRAM size.\n", i, card->sram_size); 4951da177e4SLinus Torvalds 4961da177e4SLinus Torvalds card->rct_size = NS_MAX_RCTSIZE; 4971da177e4SLinus Torvalds 4981da177e4SLinus Torvalds #if (NS_MAX_RCTSIZE == 4096) 4991da177e4SLinus Torvalds if (card->sram_size == 128) 500098fde11Schas williams - CONTRACTOR printk 501098fde11Schas williams - CONTRACTOR ("nicstar%d: limiting maximum VCI. See NS_MAX_RCTSIZE in nicstar.h\n", 502098fde11Schas williams - CONTRACTOR i); 5031da177e4SLinus Torvalds #elif (NS_MAX_RCTSIZE == 16384) 504098fde11Schas williams - CONTRACTOR if (card->sram_size == 32) { 505098fde11Schas williams - CONTRACTOR printk 506098fde11Schas williams - CONTRACTOR ("nicstar%d: wasting memory. See NS_MAX_RCTSIZE in nicstar.h\n", 507098fde11Schas williams - CONTRACTOR i); 5081da177e4SLinus Torvalds card->rct_size = 4096; 5091da177e4SLinus Torvalds } 5101da177e4SLinus Torvalds #else 5111da177e4SLinus Torvalds #error NS_MAX_RCTSIZE must be either 4096 or 16384 in nicstar.c 5121da177e4SLinus Torvalds #endif 5131da177e4SLinus Torvalds 5141da177e4SLinus Torvalds card->vpibits = NS_VPIBITS; 5151da177e4SLinus Torvalds if (card->rct_size == 4096) 5161da177e4SLinus Torvalds card->vcibits = 12 - NS_VPIBITS; 5171da177e4SLinus Torvalds else /* card->rct_size == 16384 */ 5181da177e4SLinus Torvalds card->vcibits = 14 - NS_VPIBITS; 5191da177e4SLinus Torvalds 5201da177e4SLinus Torvalds /* Initialize the nicstar eeprom/eprom stuff, for the MAC addr */ 5211da177e4SLinus Torvalds if (mac[i] == NULL) 5221da177e4SLinus Torvalds nicstar_init_eprom(card->membase); 5231da177e4SLinus Torvalds 5241da177e4SLinus Torvalds /* Set the VPI/VCI MSb mask to zero so we can receive OAM cells */ 5251da177e4SLinus Torvalds writel(0x00000000, card->membase + VPM); 5261da177e4SLinus Torvalds 5271da177e4SLinus Torvalds /* Initialize TSQ */ 528ede58ef2Schas williams - CONTRACTOR card->tsq.org = dma_alloc_coherent(&card->pcidev->dev, 529864a3ff6Schas williams - CONTRACTOR NS_TSQSIZE + NS_TSQ_ALIGNMENT, 530ede58ef2Schas williams - CONTRACTOR &card->tsq.dma, GFP_KERNEL); 531098fde11Schas williams - CONTRACTOR if (card->tsq.org == NULL) { 5321da177e4SLinus Torvalds printk("nicstar%d: can't allocate TSQ.\n", i); 5331da177e4SLinus Torvalds error = 10; 5341da177e4SLinus Torvalds ns_init_card_error(card, error); 5351da177e4SLinus Torvalds return error; 5361da177e4SLinus Torvalds } 537864a3ff6Schas williams - CONTRACTOR card->tsq.base = PTR_ALIGN(card->tsq.org, NS_TSQ_ALIGNMENT); 5381da177e4SLinus Torvalds card->tsq.next = card->tsq.base; 5391da177e4SLinus Torvalds card->tsq.last = card->tsq.base + (NS_TSQ_NUM_ENTRIES - 1); 5401da177e4SLinus Torvalds for (j = 0; j < NS_TSQ_NUM_ENTRIES; j++) 5411da177e4SLinus Torvalds ns_tsi_init(card->tsq.base + j); 5421da177e4SLinus Torvalds writel(0x00000000, card->membase + TSQH); 543864a3ff6Schas williams - CONTRACTOR writel(ALIGN(card->tsq.dma, NS_TSQ_ALIGNMENT), card->membase + TSQB); 544864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: TSQ base at 0x%p.\n", i, card->tsq.base); 5451da177e4SLinus Torvalds 5461da177e4SLinus Torvalds /* Initialize RSQ */ 547ede58ef2Schas williams - CONTRACTOR card->rsq.org = dma_alloc_coherent(&card->pcidev->dev, 548864a3ff6Schas williams - CONTRACTOR NS_RSQSIZE + NS_RSQ_ALIGNMENT, 549ede58ef2Schas williams - CONTRACTOR &card->rsq.dma, GFP_KERNEL); 550098fde11Schas williams - CONTRACTOR if (card->rsq.org == NULL) { 5511da177e4SLinus Torvalds printk("nicstar%d: can't allocate RSQ.\n", i); 5521da177e4SLinus Torvalds error = 11; 5531da177e4SLinus Torvalds ns_init_card_error(card, error); 5541da177e4SLinus Torvalds return error; 5551da177e4SLinus Torvalds } 556864a3ff6Schas williams - CONTRACTOR card->rsq.base = PTR_ALIGN(card->rsq.org, NS_RSQ_ALIGNMENT); 5571da177e4SLinus Torvalds card->rsq.next = card->rsq.base; 5581da177e4SLinus Torvalds card->rsq.last = card->rsq.base + (NS_RSQ_NUM_ENTRIES - 1); 5591da177e4SLinus Torvalds for (j = 0; j < NS_RSQ_NUM_ENTRIES; j++) 5601da177e4SLinus Torvalds ns_rsqe_init(card->rsq.base + j); 5611da177e4SLinus Torvalds writel(0x00000000, card->membase + RSQH); 562864a3ff6Schas williams - CONTRACTOR writel(ALIGN(card->rsq.dma, NS_RSQ_ALIGNMENT), card->membase + RSQB); 563864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: RSQ base at 0x%p.\n", i, card->rsq.base); 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvalds /* Initialize SCQ0, the only VBR SCQ used */ 566a2c1aa54SJesper Juhl card->scq1 = NULL; 567a2c1aa54SJesper Juhl card->scq2 = NULL; 568864a3ff6Schas williams - CONTRACTOR card->scq0 = get_scq(card, VBR_SCQSIZE, NS_VRSCD0); 569098fde11Schas williams - CONTRACTOR if (card->scq0 == NULL) { 5701da177e4SLinus Torvalds printk("nicstar%d: can't get SCQ0.\n", i); 5711da177e4SLinus Torvalds error = 12; 5721da177e4SLinus Torvalds ns_init_card_error(card, error); 5731da177e4SLinus Torvalds return error; 5741da177e4SLinus Torvalds } 575864a3ff6Schas williams - CONTRACTOR u32d[0] = scq_virt_to_bus(card->scq0, card->scq0->base); 5761da177e4SLinus Torvalds u32d[1] = (u32) 0x00000000; 5771da177e4SLinus Torvalds u32d[2] = (u32) 0xffffffff; 5781da177e4SLinus Torvalds u32d[3] = (u32) 0x00000000; 5791da177e4SLinus Torvalds ns_write_sram(card, NS_VRSCD0, u32d, 4); 5801da177e4SLinus Torvalds ns_write_sram(card, NS_VRSCD1, u32d, 4); /* These last two won't be used */ 5811da177e4SLinus Torvalds ns_write_sram(card, NS_VRSCD2, u32d, 4); /* but are initialized, just in case... */ 5821da177e4SLinus Torvalds card->scq0->scd = NS_VRSCD0; 583864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: VBR-SCQ0 base at 0x%p.\n", i, card->scq0->base); 5841da177e4SLinus Torvalds 5851da177e4SLinus Torvalds /* Initialize TSTs */ 5861da177e4SLinus Torvalds card->tst_addr = NS_TST0; 5871da177e4SLinus Torvalds card->tst_free_entries = NS_TST_NUM_ENTRIES; 5881da177e4SLinus Torvalds data = NS_TST_OPCODE_VARIABLE; 5891da177e4SLinus Torvalds for (j = 0; j < NS_TST_NUM_ENTRIES; j++) 5901da177e4SLinus Torvalds ns_write_sram(card, NS_TST0 + j, &data, 1); 5911da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_END, NS_TST0); 5921da177e4SLinus Torvalds ns_write_sram(card, NS_TST0 + NS_TST_NUM_ENTRIES, &data, 1); 5931da177e4SLinus Torvalds for (j = 0; j < NS_TST_NUM_ENTRIES; j++) 5941da177e4SLinus Torvalds ns_write_sram(card, NS_TST1 + j, &data, 1); 5951da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_END, NS_TST1); 5961da177e4SLinus Torvalds ns_write_sram(card, NS_TST1 + NS_TST_NUM_ENTRIES, &data, 1); 5971da177e4SLinus Torvalds for (j = 0; j < NS_TST_NUM_ENTRIES; j++) 5981da177e4SLinus Torvalds card->tste2vc[j] = NULL; 5991da177e4SLinus Torvalds writel(NS_TST0 << 2, card->membase + TSTB); 6001da177e4SLinus Torvalds 6011da177e4SLinus Torvalds /* Initialize RCT. AAL type is set on opening the VC. */ 6021da177e4SLinus Torvalds #ifdef RCQ_SUPPORT 6031da177e4SLinus Torvalds u32d[0] = NS_RCTE_RAWCELLINTEN; 6041da177e4SLinus Torvalds #else 6051da177e4SLinus Torvalds u32d[0] = 0x00000000; 6061da177e4SLinus Torvalds #endif /* RCQ_SUPPORT */ 6071da177e4SLinus Torvalds u32d[1] = 0x00000000; 6081da177e4SLinus Torvalds u32d[2] = 0x00000000; 6091da177e4SLinus Torvalds u32d[3] = 0xFFFFFFFF; 6101da177e4SLinus Torvalds for (j = 0; j < card->rct_size; j++) 6111da177e4SLinus Torvalds ns_write_sram(card, j * 4, u32d, 4); 6121da177e4SLinus Torvalds 613ee41f07cSMarkus Elfring memset(card->vcmap, 0, sizeof(card->vcmap)); 6141da177e4SLinus Torvalds 6151da177e4SLinus Torvalds for (j = 0; j < NS_FRSCD_NUM; j++) 6161da177e4SLinus Torvalds card->scd2vc[j] = NULL; 6171da177e4SLinus Torvalds 6181da177e4SLinus Torvalds /* Initialize buffer levels */ 6191da177e4SLinus Torvalds card->sbnr.min = MIN_SB; 6201da177e4SLinus Torvalds card->sbnr.init = NUM_SB; 6211da177e4SLinus Torvalds card->sbnr.max = MAX_SB; 6221da177e4SLinus Torvalds card->lbnr.min = MIN_LB; 6231da177e4SLinus Torvalds card->lbnr.init = NUM_LB; 6241da177e4SLinus Torvalds card->lbnr.max = MAX_LB; 6251da177e4SLinus Torvalds card->iovnr.min = MIN_IOVB; 6261da177e4SLinus Torvalds card->iovnr.init = NUM_IOVB; 6271da177e4SLinus Torvalds card->iovnr.max = MAX_IOVB; 6281da177e4SLinus Torvalds card->hbnr.min = MIN_HB; 6291da177e4SLinus Torvalds card->hbnr.init = NUM_HB; 6301da177e4SLinus Torvalds card->hbnr.max = MAX_HB; 6311da177e4SLinus Torvalds 632c664d638SDaeseok Youn card->sm_handle = NULL; 6331da177e4SLinus Torvalds card->sm_addr = 0x00000000; 634c664d638SDaeseok Youn card->lg_handle = NULL; 6351da177e4SLinus Torvalds card->lg_addr = 0x00000000; 6361da177e4SLinus Torvalds 6371da177e4SLinus Torvalds card->efbie = 1; /* To prevent push_rxbufs from enabling the interrupt */ 6381da177e4SLinus Torvalds 639864a3ff6Schas williams - CONTRACTOR idr_init(&card->idr); 640864a3ff6Schas williams - CONTRACTOR 6411da177e4SLinus Torvalds /* Pre-allocate some huge buffers */ 6421da177e4SLinus Torvalds skb_queue_head_init(&card->hbpool.queue); 6431da177e4SLinus Torvalds card->hbpool.count = 0; 644098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_HB; j++) { 6451da177e4SLinus Torvalds struct sk_buff *hb; 6461da177e4SLinus Torvalds hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); 647098fde11Schas williams - CONTRACTOR if (hb == NULL) { 648098fde11Schas williams - CONTRACTOR printk 649098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d huge buffers.\n", 6501da177e4SLinus Torvalds i, j, NUM_HB); 6511da177e4SLinus Torvalds error = 13; 6521da177e4SLinus Torvalds ns_init_card_error(card, error); 6531da177e4SLinus Torvalds return error; 6541da177e4SLinus Torvalds } 655864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(hb) = BUF_NONE; 6561da177e4SLinus Torvalds skb_queue_tail(&card->hbpool.queue, hb); 6571da177e4SLinus Torvalds card->hbpool.count++; 6581da177e4SLinus Torvalds } 6591da177e4SLinus Torvalds 6601da177e4SLinus Torvalds /* Allocate large buffers */ 6611da177e4SLinus Torvalds skb_queue_head_init(&card->lbpool.queue); 6621da177e4SLinus Torvalds card->lbpool.count = 0; /* Not used */ 663098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_LB; j++) { 6641da177e4SLinus Torvalds struct sk_buff *lb; 6651da177e4SLinus Torvalds lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); 666098fde11Schas williams - CONTRACTOR if (lb == NULL) { 667098fde11Schas williams - CONTRACTOR printk 668098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d large buffers.\n", 6691da177e4SLinus Torvalds i, j, NUM_LB); 6701da177e4SLinus Torvalds error = 14; 6711da177e4SLinus Torvalds ns_init_card_error(card, error); 6721da177e4SLinus Torvalds return error; 6731da177e4SLinus Torvalds } 674864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(lb) = BUF_LG; 6751da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, lb); 6761da177e4SLinus Torvalds skb_reserve(lb, NS_SMBUFSIZE); 6778728b834SDavid S. Miller push_rxbufs(card, lb); 6781da177e4SLinus Torvalds /* Due to the implementation of push_rxbufs() this is 1, not 0 */ 679098fde11Schas williams - CONTRACTOR if (j == 1) { 6801da177e4SLinus Torvalds card->rcbuf = lb; 681864a3ff6Schas williams - CONTRACTOR card->rawcell = (struct ns_rcqe *) lb->data; 682864a3ff6Schas williams - CONTRACTOR card->rawch = NS_PRV_DMA(lb); 6831da177e4SLinus Torvalds } 6841da177e4SLinus Torvalds } 6851da177e4SLinus Torvalds /* Test for strange behaviour which leads to crashes */ 686098fde11Schas williams - CONTRACTOR if ((bcount = 687098fde11Schas williams - CONTRACTOR ns_stat_lfbqc_get(readl(card->membase + STAT))) < card->lbnr.min) { 688098fde11Schas williams - CONTRACTOR printk 689098fde11Schas williams - CONTRACTOR ("nicstar%d: Strange... Just allocated %d large buffers and lfbqc = %d.\n", 6901da177e4SLinus Torvalds i, j, bcount); 6911da177e4SLinus Torvalds error = 14; 6921da177e4SLinus Torvalds ns_init_card_error(card, error); 6931da177e4SLinus Torvalds return error; 6941da177e4SLinus Torvalds } 6951da177e4SLinus Torvalds 6961da177e4SLinus Torvalds /* Allocate small buffers */ 6971da177e4SLinus Torvalds skb_queue_head_init(&card->sbpool.queue); 6981da177e4SLinus Torvalds card->sbpool.count = 0; /* Not used */ 699098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_SB; j++) { 7001da177e4SLinus Torvalds struct sk_buff *sb; 7011da177e4SLinus Torvalds sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); 702098fde11Schas williams - CONTRACTOR if (sb == NULL) { 703098fde11Schas williams - CONTRACTOR printk 704098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d small buffers.\n", 7051da177e4SLinus Torvalds i, j, NUM_SB); 7061da177e4SLinus Torvalds error = 15; 7071da177e4SLinus Torvalds ns_init_card_error(card, error); 7081da177e4SLinus Torvalds return error; 7091da177e4SLinus Torvalds } 710864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(sb) = BUF_SM; 7111da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, sb); 7121da177e4SLinus Torvalds skb_reserve(sb, NS_AAL0_HEADER); 7138728b834SDavid S. Miller push_rxbufs(card, sb); 7141da177e4SLinus Torvalds } 7151da177e4SLinus Torvalds /* Test for strange behaviour which leads to crashes */ 716098fde11Schas williams - CONTRACTOR if ((bcount = 717098fde11Schas williams - CONTRACTOR ns_stat_sfbqc_get(readl(card->membase + STAT))) < card->sbnr.min) { 718098fde11Schas williams - CONTRACTOR printk 719098fde11Schas williams - CONTRACTOR ("nicstar%d: Strange... Just allocated %d small buffers and sfbqc = %d.\n", 7201da177e4SLinus Torvalds i, j, bcount); 7211da177e4SLinus Torvalds error = 15; 7221da177e4SLinus Torvalds ns_init_card_error(card, error); 7231da177e4SLinus Torvalds return error; 7241da177e4SLinus Torvalds } 7251da177e4SLinus Torvalds 7261da177e4SLinus Torvalds /* Allocate iovec buffers */ 7271da177e4SLinus Torvalds skb_queue_head_init(&card->iovpool.queue); 7281da177e4SLinus Torvalds card->iovpool.count = 0; 729098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_IOVB; j++) { 7301da177e4SLinus Torvalds struct sk_buff *iovb; 7311da177e4SLinus Torvalds iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); 732098fde11Schas williams - CONTRACTOR if (iovb == NULL) { 733098fde11Schas williams - CONTRACTOR printk 734098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d iovec buffers.\n", 7351da177e4SLinus Torvalds i, j, NUM_IOVB); 7361da177e4SLinus Torvalds error = 16; 7371da177e4SLinus Torvalds ns_init_card_error(card, error); 7381da177e4SLinus Torvalds return error; 7391da177e4SLinus Torvalds } 740864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE; 7411da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, iovb); 7421da177e4SLinus Torvalds card->iovpool.count++; 7431da177e4SLinus Torvalds } 7441da177e4SLinus Torvalds 7451da177e4SLinus Torvalds /* Configure NICStAR */ 7461da177e4SLinus Torvalds if (card->rct_size == 4096) 7471da177e4SLinus Torvalds ns_cfg_rctsize = NS_CFG_RCTSIZE_4096_ENTRIES; 7481da177e4SLinus Torvalds else /* (card->rct_size == 16384) */ 7491da177e4SLinus Torvalds ns_cfg_rctsize = NS_CFG_RCTSIZE_16384_ENTRIES; 7501da177e4SLinus Torvalds 7511da177e4SLinus Torvalds card->efbie = 1; 7521da177e4SLinus Torvalds 75352961955SChas Williams card->intcnt = 0; 754098fde11Schas williams - CONTRACTOR if (request_irq 75506df277aSchas williams - CONTRACTOR (pcidev->irq, &ns_irq_handler, IRQF_SHARED, "nicstar", card) != 0) { 75652961955SChas Williams printk("nicstar%d: can't allocate IRQ %d.\n", i, pcidev->irq); 75752961955SChas Williams error = 9; 75852961955SChas Williams ns_init_card_error(card, error); 75952961955SChas Williams return error; 76052961955SChas Williams } 76152961955SChas Williams 7621da177e4SLinus Torvalds /* Register device */ 763d9ca676bSDan Williams card->atmdev = atm_dev_register("nicstar", &card->pcidev->dev, &atm_ops, 764d9ca676bSDan Williams -1, NULL); 765098fde11Schas williams - CONTRACTOR if (card->atmdev == NULL) { 7661da177e4SLinus Torvalds printk("nicstar%d: can't register device.\n", i); 7671da177e4SLinus Torvalds error = 17; 7681da177e4SLinus Torvalds ns_init_card_error(card, error); 7691da177e4SLinus Torvalds return error; 7701da177e4SLinus Torvalds } 7711da177e4SLinus Torvalds 772d2bb3905SAndy Shevchenko if (mac[i] == NULL || !mac_pton(mac[i], card->atmdev->esi)) { 7731da177e4SLinus Torvalds nicstar_read_eprom(card->membase, NICSTAR_EPROM_MAC_ADDR_OFFSET, 7741da177e4SLinus Torvalds card->atmdev->esi, 6); 7754c55a462Sdingtianhong if (ether_addr_equal(card->atmdev->esi, "\x00\x00\x00\x00\x00\x00")) { 776098fde11Schas williams - CONTRACTOR nicstar_read_eprom(card->membase, 777098fde11Schas williams - CONTRACTOR NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT, 7781da177e4SLinus Torvalds card->atmdev->esi, 6); 7791da177e4SLinus Torvalds } 7801da177e4SLinus Torvalds } 7811da177e4SLinus Torvalds 7821154b299Shartleys printk("nicstar%d: MAC address %pM\n", i, card->atmdev->esi); 7831da177e4SLinus Torvalds 7841da177e4SLinus Torvalds card->atmdev->dev_data = card; 7851da177e4SLinus Torvalds card->atmdev->ci_range.vpi_bits = card->vpibits; 7861da177e4SLinus Torvalds card->atmdev->ci_range.vci_bits = card->vcibits; 7871da177e4SLinus Torvalds card->atmdev->link_rate = card->max_pcr; 7881da177e4SLinus Torvalds card->atmdev->phy = NULL; 7891da177e4SLinus Torvalds 7901da177e4SLinus Torvalds #ifdef CONFIG_ATM_NICSTAR_USE_SUNI 7911da177e4SLinus Torvalds if (card->max_pcr == ATM_OC3_PCR) 7921da177e4SLinus Torvalds suni_init(card->atmdev); 7931da177e4SLinus Torvalds #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ 7941da177e4SLinus Torvalds 7951da177e4SLinus Torvalds #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 7961da177e4SLinus Torvalds if (card->max_pcr == ATM_25_PCR) 7971da177e4SLinus Torvalds idt77105_init(card->atmdev); 7981da177e4SLinus Torvalds #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ 7991da177e4SLinus Torvalds 8001da177e4SLinus Torvalds if (card->atmdev->phy && card->atmdev->phy->start) 8011da177e4SLinus Torvalds card->atmdev->phy->start(card->atmdev); 8021da177e4SLinus Torvalds 803098fde11Schas williams - CONTRACTOR writel(NS_CFG_RXPATH | NS_CFG_SMBUFSIZE | NS_CFG_LGBUFSIZE | NS_CFG_EFBIE | NS_CFG_RSQSIZE | NS_CFG_VPIBITS | ns_cfg_rctsize | NS_CFG_RXINT_NODELAY | NS_CFG_RAWIE | /* Only enabled if RCQ_SUPPORT */ 804098fde11Schas williams - CONTRACTOR NS_CFG_RSQAFIE | NS_CFG_TXEN | NS_CFG_TXIE | NS_CFG_TSQFIE_OPT | /* Only enabled if ENABLE_TSQFIE */ 805098fde11Schas williams - CONTRACTOR NS_CFG_PHYIE, card->membase + CFG); 8061da177e4SLinus Torvalds 8071da177e4SLinus Torvalds num_cards++; 8081da177e4SLinus Torvalds 8091da177e4SLinus Torvalds return error; 8101da177e4SLinus Torvalds } 8111da177e4SLinus Torvalds 8126c44512dSGreg Kroah-Hartman static void ns_init_card_error(ns_dev *card, int error) 8131da177e4SLinus Torvalds { 814098fde11Schas williams - CONTRACTOR if (error >= 17) { 8151da177e4SLinus Torvalds writel(0x00000000, card->membase + CFG); 8161da177e4SLinus Torvalds } 817098fde11Schas williams - CONTRACTOR if (error >= 16) { 8181da177e4SLinus Torvalds struct sk_buff *iovb; 8191da177e4SLinus Torvalds while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) 8201da177e4SLinus Torvalds dev_kfree_skb_any(iovb); 8211da177e4SLinus Torvalds } 822098fde11Schas williams - CONTRACTOR if (error >= 15) { 8231da177e4SLinus Torvalds struct sk_buff *sb; 8241da177e4SLinus Torvalds while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL) 8251da177e4SLinus Torvalds dev_kfree_skb_any(sb); 826864a3ff6Schas williams - CONTRACTOR free_scq(card, card->scq0, NULL); 8271da177e4SLinus Torvalds } 828098fde11Schas williams - CONTRACTOR if (error >= 14) { 8291da177e4SLinus Torvalds struct sk_buff *lb; 8301da177e4SLinus Torvalds while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL) 8311da177e4SLinus Torvalds dev_kfree_skb_any(lb); 8321da177e4SLinus Torvalds } 833098fde11Schas williams - CONTRACTOR if (error >= 13) { 8341da177e4SLinus Torvalds struct sk_buff *hb; 8351da177e4SLinus Torvalds while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) 8361da177e4SLinus Torvalds dev_kfree_skb_any(hb); 8371da177e4SLinus Torvalds } 838098fde11Schas williams - CONTRACTOR if (error >= 12) { 8391da177e4SLinus Torvalds kfree(card->rsq.org); 8401da177e4SLinus Torvalds } 841098fde11Schas williams - CONTRACTOR if (error >= 11) { 8421da177e4SLinus Torvalds kfree(card->tsq.org); 8431da177e4SLinus Torvalds } 844098fde11Schas williams - CONTRACTOR if (error >= 10) { 8451da177e4SLinus Torvalds free_irq(card->pcidev->irq, card); 8461da177e4SLinus Torvalds } 847098fde11Schas williams - CONTRACTOR if (error >= 4) { 8481da177e4SLinus Torvalds iounmap(card->membase); 8491da177e4SLinus Torvalds } 850098fde11Schas williams - CONTRACTOR if (error >= 3) { 8511da177e4SLinus Torvalds pci_disable_device(card->pcidev); 8521da177e4SLinus Torvalds kfree(card); 8531da177e4SLinus Torvalds } 8541da177e4SLinus Torvalds } 8551da177e4SLinus Torvalds 856864a3ff6Schas williams - CONTRACTOR static scq_info *get_scq(ns_dev *card, int size, u32 scd) 8571da177e4SLinus Torvalds { 8581da177e4SLinus Torvalds scq_info *scq; 8591da177e4SLinus Torvalds int i; 8601da177e4SLinus Torvalds 8611da177e4SLinus Torvalds if (size != VBR_SCQSIZE && size != CBR_SCQSIZE) 862a2c1aa54SJesper Juhl return NULL; 8631da177e4SLinus Torvalds 86424310fd5SMarkus Elfring scq = kmalloc(sizeof(*scq), GFP_KERNEL); 865864a3ff6Schas williams - CONTRACTOR if (!scq) 866a2c1aa54SJesper Juhl return NULL; 867ede58ef2Schas williams - CONTRACTOR scq->org = dma_alloc_coherent(&card->pcidev->dev, 868ede58ef2Schas williams - CONTRACTOR 2 * size, &scq->dma, GFP_KERNEL); 869864a3ff6Schas williams - CONTRACTOR if (!scq->org) { 8701da177e4SLinus Torvalds kfree(scq); 871a2c1aa54SJesper Juhl return NULL; 8721da177e4SLinus Torvalds } 87378706121SMarkus Elfring scq->skb = kmalloc_array(size / NS_SCQE_SIZE, 87478706121SMarkus Elfring sizeof(*scq->skb), 87578706121SMarkus Elfring GFP_KERNEL); 876864a3ff6Schas williams - CONTRACTOR if (!scq->skb) { 877eab81466SChristophe Jaillet dma_free_coherent(&card->pcidev->dev, 878eab81466SChristophe Jaillet 2 * size, scq->org, scq->dma); 8791da177e4SLinus Torvalds kfree(scq); 880a2c1aa54SJesper Juhl return NULL; 8811da177e4SLinus Torvalds } 8821da177e4SLinus Torvalds scq->num_entries = size / NS_SCQE_SIZE; 883864a3ff6Schas williams - CONTRACTOR scq->base = PTR_ALIGN(scq->org, size); 8841da177e4SLinus Torvalds scq->next = scq->base; 8851da177e4SLinus Torvalds scq->last = scq->base + (scq->num_entries - 1); 8861da177e4SLinus Torvalds scq->tail = scq->last; 8871da177e4SLinus Torvalds scq->scd = scd; 8881da177e4SLinus Torvalds scq->num_entries = size / NS_SCQE_SIZE; 8891da177e4SLinus Torvalds scq->tbd_count = 0; 8901da177e4SLinus Torvalds init_waitqueue_head(&scq->scqfull_waitq); 8911da177e4SLinus Torvalds scq->full = 0; 8921da177e4SLinus Torvalds spin_lock_init(&scq->lock); 8931da177e4SLinus Torvalds 8941da177e4SLinus Torvalds for (i = 0; i < scq->num_entries; i++) 8951da177e4SLinus Torvalds scq->skb[i] = NULL; 8961da177e4SLinus Torvalds 8971da177e4SLinus Torvalds return scq; 8981da177e4SLinus Torvalds } 8991da177e4SLinus Torvalds 9001da177e4SLinus Torvalds /* For variable rate SCQ vcc must be NULL */ 901864a3ff6Schas williams - CONTRACTOR static void free_scq(ns_dev *card, scq_info *scq, struct atm_vcc *vcc) 9021da177e4SLinus Torvalds { 9031da177e4SLinus Torvalds int i; 9041da177e4SLinus Torvalds 9051da177e4SLinus Torvalds if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) 906098fde11Schas williams - CONTRACTOR for (i = 0; i < scq->num_entries; i++) { 907098fde11Schas williams - CONTRACTOR if (scq->skb[i] != NULL) { 9081da177e4SLinus Torvalds vcc = ATM_SKB(scq->skb[i])->vcc; 9091da177e4SLinus Torvalds if (vcc->pop != NULL) 9101da177e4SLinus Torvalds vcc->pop(vcc, scq->skb[i]); 9111da177e4SLinus Torvalds else 9121da177e4SLinus Torvalds dev_kfree_skb_any(scq->skb[i]); 9131da177e4SLinus Torvalds } 914098fde11Schas williams - CONTRACTOR } else { /* vcc must be != NULL */ 915098fde11Schas williams - CONTRACTOR 916098fde11Schas williams - CONTRACTOR if (vcc == NULL) { 917098fde11Schas williams - CONTRACTOR printk 918098fde11Schas williams - CONTRACTOR ("nicstar: free_scq() called with vcc == NULL for fixed rate scq."); 9191da177e4SLinus Torvalds for (i = 0; i < scq->num_entries; i++) 9201da177e4SLinus Torvalds dev_kfree_skb_any(scq->skb[i]); 921098fde11Schas williams - CONTRACTOR } else 922098fde11Schas williams - CONTRACTOR for (i = 0; i < scq->num_entries; i++) { 923098fde11Schas williams - CONTRACTOR if (scq->skb[i] != NULL) { 9241da177e4SLinus Torvalds if (vcc->pop != NULL) 9251da177e4SLinus Torvalds vcc->pop(vcc, scq->skb[i]); 9261da177e4SLinus Torvalds else 9271da177e4SLinus Torvalds dev_kfree_skb_any(scq->skb[i]); 9281da177e4SLinus Torvalds } 9291da177e4SLinus Torvalds } 9301da177e4SLinus Torvalds } 9311da177e4SLinus Torvalds kfree(scq->skb); 932ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&card->pcidev->dev, 933864a3ff6Schas williams - CONTRACTOR 2 * (scq->num_entries == VBR_SCQ_NUM_ENTRIES ? 934864a3ff6Schas williams - CONTRACTOR VBR_SCQSIZE : CBR_SCQSIZE), 935864a3ff6Schas williams - CONTRACTOR scq->org, scq->dma); 9361da177e4SLinus Torvalds kfree(scq); 9371da177e4SLinus Torvalds } 9381da177e4SLinus Torvalds 9391da177e4SLinus Torvalds /* The handles passed must be pointers to the sk_buff containing the small 9401da177e4SLinus Torvalds or large buffer(s) cast to u32. */ 9418728b834SDavid S. Miller static void push_rxbufs(ns_dev * card, struct sk_buff *skb) 9421da177e4SLinus Torvalds { 943864a3ff6Schas williams - CONTRACTOR struct sk_buff *handle1, *handle2; 944b051f6edSTejun Heo int id1, id2; 945864a3ff6Schas williams - CONTRACTOR u32 addr1, addr2; 9461da177e4SLinus Torvalds u32 stat; 9471da177e4SLinus Torvalds unsigned long flags; 9481da177e4SLinus Torvalds 9498728b834SDavid S. Miller /* *BARF* */ 950864a3ff6Schas williams - CONTRACTOR handle2 = NULL; 951864a3ff6Schas williams - CONTRACTOR addr2 = 0; 952864a3ff6Schas williams - CONTRACTOR handle1 = skb; 953ede58ef2Schas williams - CONTRACTOR addr1 = dma_map_single(&card->pcidev->dev, 954864a3ff6Schas williams - CONTRACTOR skb->data, 955864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM 956864a3ff6Schas williams - CONTRACTOR ? NS_SMSKBSIZE : NS_LGSKBSIZE), 957ede58ef2Schas williams - CONTRACTOR DMA_TO_DEVICE); 958864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb) = addr1; /* save so we can unmap later */ 9591da177e4SLinus Torvalds 9601da177e4SLinus Torvalds #ifdef GENERAL_DEBUG 9611da177e4SLinus Torvalds if (!addr1) 962098fde11Schas williams - CONTRACTOR printk("nicstar%d: push_rxbufs called with addr1 = 0.\n", 963098fde11Schas williams - CONTRACTOR card->index); 9641da177e4SLinus Torvalds #endif /* GENERAL_DEBUG */ 9651da177e4SLinus Torvalds 9661da177e4SLinus Torvalds stat = readl(card->membase + STAT); 9671da177e4SLinus Torvalds card->sbfqc = ns_stat_sfbqc_get(stat); 9681da177e4SLinus Torvalds card->lbfqc = ns_stat_lfbqc_get(stat); 969864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) == BUF_SM) { 970098fde11Schas williams - CONTRACTOR if (!addr2) { 971098fde11Schas williams - CONTRACTOR if (card->sm_addr) { 9721da177e4SLinus Torvalds addr2 = card->sm_addr; 9731da177e4SLinus Torvalds handle2 = card->sm_handle; 9741da177e4SLinus Torvalds card->sm_addr = 0x00000000; 975c664d638SDaeseok Youn card->sm_handle = NULL; 976098fde11Schas williams - CONTRACTOR } else { /* (!sm_addr) */ 977098fde11Schas williams - CONTRACTOR 9781da177e4SLinus Torvalds card->sm_addr = addr1; 9791da177e4SLinus Torvalds card->sm_handle = handle1; 9801da177e4SLinus Torvalds } 9811da177e4SLinus Torvalds } 982098fde11Schas williams - CONTRACTOR } else { /* buf_type == BUF_LG */ 983098fde11Schas williams - CONTRACTOR 984098fde11Schas williams - CONTRACTOR if (!addr2) { 985098fde11Schas williams - CONTRACTOR if (card->lg_addr) { 9861da177e4SLinus Torvalds addr2 = card->lg_addr; 9871da177e4SLinus Torvalds handle2 = card->lg_handle; 9881da177e4SLinus Torvalds card->lg_addr = 0x00000000; 989c664d638SDaeseok Youn card->lg_handle = NULL; 990098fde11Schas williams - CONTRACTOR } else { /* (!lg_addr) */ 991098fde11Schas williams - CONTRACTOR 9921da177e4SLinus Torvalds card->lg_addr = addr1; 9931da177e4SLinus Torvalds card->lg_handle = handle1; 9941da177e4SLinus Torvalds } 9951da177e4SLinus Torvalds } 9961da177e4SLinus Torvalds } 9971da177e4SLinus Torvalds 998098fde11Schas williams - CONTRACTOR if (addr2) { 999864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) == BUF_SM) { 1000098fde11Schas williams - CONTRACTOR if (card->sbfqc >= card->sbnr.max) { 1001864a3ff6Schas williams - CONTRACTOR skb_unlink(handle1, &card->sbpool.queue); 1002864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle1); 1003864a3ff6Schas williams - CONTRACTOR skb_unlink(handle2, &card->sbpool.queue); 1004864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle2); 10051da177e4SLinus Torvalds return; 1006098fde11Schas williams - CONTRACTOR } else 10071da177e4SLinus Torvalds card->sbfqc += 2; 1008098fde11Schas williams - CONTRACTOR } else { /* (buf_type == BUF_LG) */ 1009098fde11Schas williams - CONTRACTOR 1010098fde11Schas williams - CONTRACTOR if (card->lbfqc >= card->lbnr.max) { 1011864a3ff6Schas williams - CONTRACTOR skb_unlink(handle1, &card->lbpool.queue); 1012864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle1); 1013864a3ff6Schas williams - CONTRACTOR skb_unlink(handle2, &card->lbpool.queue); 1014864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle2); 10151da177e4SLinus Torvalds return; 1016098fde11Schas williams - CONTRACTOR } else 10171da177e4SLinus Torvalds card->lbfqc += 2; 10181da177e4SLinus Torvalds } 10191da177e4SLinus Torvalds 1020b051f6edSTejun Heo id1 = idr_alloc(&card->idr, handle1, 0, 0, GFP_ATOMIC); 1021b051f6edSTejun Heo if (id1 < 0) 1022864a3ff6Schas williams - CONTRACTOR goto out; 10231da177e4SLinus Torvalds 1024b051f6edSTejun Heo id2 = idr_alloc(&card->idr, handle2, 0, 0, GFP_ATOMIC); 1025b051f6edSTejun Heo if (id2 < 0) 1026864a3ff6Schas williams - CONTRACTOR goto out; 1027864a3ff6Schas williams - CONTRACTOR 1028864a3ff6Schas williams - CONTRACTOR spin_lock_irqsave(&card->res_lock, flags); 10291da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 10301da177e4SLinus Torvalds writel(addr2, card->membase + DR3); 1031864a3ff6Schas williams - CONTRACTOR writel(id2, card->membase + DR2); 10321da177e4SLinus Torvalds writel(addr1, card->membase + DR1); 1033864a3ff6Schas williams - CONTRACTOR writel(id1, card->membase + DR0); 1034864a3ff6Schas williams - CONTRACTOR writel(NS_CMD_WRITE_FREEBUFQ | NS_PRV_BUFTYPE(skb), 1035098fde11Schas williams - CONTRACTOR card->membase + CMD); 10361da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags); 10371da177e4SLinus Torvalds 1038098fde11Schas williams - CONTRACTOR XPRINTK("nicstar%d: Pushing %s buffers at 0x%x and 0x%x.\n", 1039098fde11Schas williams - CONTRACTOR card->index, 1040864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM ? "small" : "large"), 1041864a3ff6Schas williams - CONTRACTOR addr1, addr2); 10421da177e4SLinus Torvalds } 10431da177e4SLinus Torvalds 10441da177e4SLinus Torvalds if (!card->efbie && card->sbfqc >= card->sbnr.min && 1045098fde11Schas williams - CONTRACTOR card->lbfqc >= card->lbnr.min) { 10461da177e4SLinus Torvalds card->efbie = 1; 1047098fde11Schas williams - CONTRACTOR writel((readl(card->membase + CFG) | NS_CFG_EFBIE), 1048098fde11Schas williams - CONTRACTOR card->membase + CFG); 10491da177e4SLinus Torvalds } 10501da177e4SLinus Torvalds 1051864a3ff6Schas williams - CONTRACTOR out: 10521da177e4SLinus Torvalds return; 10531da177e4SLinus Torvalds } 10541da177e4SLinus Torvalds 10557d12e780SDavid Howells static irqreturn_t ns_irq_handler(int irq, void *dev_id) 10561da177e4SLinus Torvalds { 10571da177e4SLinus Torvalds u32 stat_r; 10581da177e4SLinus Torvalds ns_dev *card; 10591da177e4SLinus Torvalds struct atm_dev *dev; 10601da177e4SLinus Torvalds unsigned long flags; 10611da177e4SLinus Torvalds 10621da177e4SLinus Torvalds card = (ns_dev *) dev_id; 10631da177e4SLinus Torvalds dev = card->atmdev; 10641da177e4SLinus Torvalds card->intcnt++; 10651da177e4SLinus Torvalds 10661da177e4SLinus Torvalds PRINTK("nicstar%d: NICStAR generated an interrupt\n", card->index); 10671da177e4SLinus Torvalds 106836ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 10691da177e4SLinus Torvalds 10701da177e4SLinus Torvalds stat_r = readl(card->membase + STAT); 10711da177e4SLinus Torvalds 10721da177e4SLinus Torvalds /* Transmit Status Indicator has been written to T. S. Queue */ 1073098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TSIF) { 10741da177e4SLinus Torvalds TXPRINTK("nicstar%d: TSI interrupt\n", card->index); 10751da177e4SLinus Torvalds process_tsq(card); 10761da177e4SLinus Torvalds writel(NS_STAT_TSIF, card->membase + STAT); 10771da177e4SLinus Torvalds } 10781da177e4SLinus Torvalds 10791da177e4SLinus Torvalds /* Incomplete CS-PDU has been transmitted */ 1080098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TXICP) { 10811da177e4SLinus Torvalds writel(NS_STAT_TXICP, card->membase + STAT); 10821da177e4SLinus Torvalds TXPRINTK("nicstar%d: Incomplete CS-PDU transmitted.\n", 10831da177e4SLinus Torvalds card->index); 10841da177e4SLinus Torvalds } 10851da177e4SLinus Torvalds 10861da177e4SLinus Torvalds /* Transmit Status Queue 7/8 full */ 1087098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TSQF) { 10881da177e4SLinus Torvalds writel(NS_STAT_TSQF, card->membase + STAT); 10891da177e4SLinus Torvalds PRINTK("nicstar%d: TSQ full.\n", card->index); 10901da177e4SLinus Torvalds process_tsq(card); 10911da177e4SLinus Torvalds } 10921da177e4SLinus Torvalds 10931da177e4SLinus Torvalds /* Timer overflow */ 1094098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TMROF) { 10951da177e4SLinus Torvalds writel(NS_STAT_TMROF, card->membase + STAT); 10961da177e4SLinus Torvalds PRINTK("nicstar%d: Timer overflow.\n", card->index); 10971da177e4SLinus Torvalds } 10981da177e4SLinus Torvalds 10991da177e4SLinus Torvalds /* PHY device interrupt signal active */ 1100098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_PHYI) { 11011da177e4SLinus Torvalds writel(NS_STAT_PHYI, card->membase + STAT); 11021da177e4SLinus Torvalds PRINTK("nicstar%d: PHY interrupt.\n", card->index); 11031da177e4SLinus Torvalds if (dev->phy && dev->phy->interrupt) { 11041da177e4SLinus Torvalds dev->phy->interrupt(dev); 11051da177e4SLinus Torvalds } 11061da177e4SLinus Torvalds } 11071da177e4SLinus Torvalds 11081da177e4SLinus Torvalds /* Small Buffer Queue is full */ 1109098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_SFBQF) { 11101da177e4SLinus Torvalds writel(NS_STAT_SFBQF, card->membase + STAT); 1111098fde11Schas williams - CONTRACTOR printk("nicstar%d: Small free buffer queue is full.\n", 1112098fde11Schas williams - CONTRACTOR card->index); 11131da177e4SLinus Torvalds } 11141da177e4SLinus Torvalds 11151da177e4SLinus Torvalds /* Large Buffer Queue is full */ 1116098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_LFBQF) { 11171da177e4SLinus Torvalds writel(NS_STAT_LFBQF, card->membase + STAT); 1118098fde11Schas williams - CONTRACTOR printk("nicstar%d: Large free buffer queue is full.\n", 1119098fde11Schas williams - CONTRACTOR card->index); 11201da177e4SLinus Torvalds } 11211da177e4SLinus Torvalds 11221da177e4SLinus Torvalds /* Receive Status Queue is full */ 1123098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_RSQF) { 11241da177e4SLinus Torvalds writel(NS_STAT_RSQF, card->membase + STAT); 11251da177e4SLinus Torvalds printk("nicstar%d: RSQ full.\n", card->index); 11261da177e4SLinus Torvalds process_rsq(card); 11271da177e4SLinus Torvalds } 11281da177e4SLinus Torvalds 11291da177e4SLinus Torvalds /* Complete CS-PDU received */ 1130098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_EOPDU) { 11311da177e4SLinus Torvalds RXPRINTK("nicstar%d: End of CS-PDU received.\n", card->index); 11321da177e4SLinus Torvalds process_rsq(card); 11331da177e4SLinus Torvalds writel(NS_STAT_EOPDU, card->membase + STAT); 11341da177e4SLinus Torvalds } 11351da177e4SLinus Torvalds 11361da177e4SLinus Torvalds /* Raw cell received */ 1137098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_RAWCF) { 11381da177e4SLinus Torvalds writel(NS_STAT_RAWCF, card->membase + STAT); 11391da177e4SLinus Torvalds #ifndef RCQ_SUPPORT 11401da177e4SLinus Torvalds printk("nicstar%d: Raw cell received and no support yet...\n", 11411da177e4SLinus Torvalds card->index); 11421da177e4SLinus Torvalds #endif /* RCQ_SUPPORT */ 11431da177e4SLinus Torvalds /* NOTE: the following procedure may keep a raw cell pending until the 11441da177e4SLinus Torvalds next interrupt. As this preliminary support is only meant to 11451da177e4SLinus Torvalds avoid buffer leakage, this is not an issue. */ 1146098fde11Schas williams - CONTRACTOR while (readl(card->membase + RAWCT) != card->rawch) { 11471da177e4SLinus Torvalds 1148864a3ff6Schas williams - CONTRACTOR if (ns_rcqe_islast(card->rawcell)) { 11491da177e4SLinus Torvalds struct sk_buff *oldbuf; 11501da177e4SLinus Torvalds 11511da177e4SLinus Torvalds oldbuf = card->rcbuf; 1152864a3ff6Schas williams - CONTRACTOR card->rcbuf = idr_find(&card->idr, 1153864a3ff6Schas williams - CONTRACTOR ns_rcqe_nextbufhandle(card->rawcell)); 1154864a3ff6Schas williams - CONTRACTOR card->rawch = NS_PRV_DMA(card->rcbuf); 1155864a3ff6Schas williams - CONTRACTOR card->rawcell = (struct ns_rcqe *) 1156864a3ff6Schas williams - CONTRACTOR card->rcbuf->data; 11571da177e4SLinus Torvalds recycle_rx_buf(card, oldbuf); 1158864a3ff6Schas williams - CONTRACTOR } else { 11591da177e4SLinus Torvalds card->rawch += NS_RCQE_SIZE; 1160864a3ff6Schas williams - CONTRACTOR card->rawcell++; 1161864a3ff6Schas williams - CONTRACTOR } 11621da177e4SLinus Torvalds } 11631da177e4SLinus Torvalds } 11641da177e4SLinus Torvalds 11651da177e4SLinus Torvalds /* Small buffer queue is empty */ 1166098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_SFBQE) { 11671da177e4SLinus Torvalds int i; 11681da177e4SLinus Torvalds struct sk_buff *sb; 11691da177e4SLinus Torvalds 11701da177e4SLinus Torvalds writel(NS_STAT_SFBQE, card->membase + STAT); 11711da177e4SLinus Torvalds printk("nicstar%d: Small free buffer queue empty.\n", 11721da177e4SLinus Torvalds card->index); 1173098fde11Schas williams - CONTRACTOR for (i = 0; i < card->sbnr.min; i++) { 11741da177e4SLinus Torvalds sb = dev_alloc_skb(NS_SMSKBSIZE); 1175098fde11Schas williams - CONTRACTOR if (sb == NULL) { 1176098fde11Schas williams - CONTRACTOR writel(readl(card->membase + CFG) & 1177098fde11Schas williams - CONTRACTOR ~NS_CFG_EFBIE, card->membase + CFG); 11781da177e4SLinus Torvalds card->efbie = 0; 11791da177e4SLinus Torvalds break; 11801da177e4SLinus Torvalds } 1181864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(sb) = BUF_SM; 11821da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, sb); 11831da177e4SLinus Torvalds skb_reserve(sb, NS_AAL0_HEADER); 11848728b834SDavid S. Miller push_rxbufs(card, sb); 11851da177e4SLinus Torvalds } 11861da177e4SLinus Torvalds card->sbfqc = i; 11871da177e4SLinus Torvalds process_rsq(card); 11881da177e4SLinus Torvalds } 11891da177e4SLinus Torvalds 11901da177e4SLinus Torvalds /* Large buffer queue empty */ 1191098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_LFBQE) { 11921da177e4SLinus Torvalds int i; 11931da177e4SLinus Torvalds struct sk_buff *lb; 11941da177e4SLinus Torvalds 11951da177e4SLinus Torvalds writel(NS_STAT_LFBQE, card->membase + STAT); 11961da177e4SLinus Torvalds printk("nicstar%d: Large free buffer queue empty.\n", 11971da177e4SLinus Torvalds card->index); 1198098fde11Schas williams - CONTRACTOR for (i = 0; i < card->lbnr.min; i++) { 11991da177e4SLinus Torvalds lb = dev_alloc_skb(NS_LGSKBSIZE); 1200098fde11Schas williams - CONTRACTOR if (lb == NULL) { 1201098fde11Schas williams - CONTRACTOR writel(readl(card->membase + CFG) & 1202098fde11Schas williams - CONTRACTOR ~NS_CFG_EFBIE, card->membase + CFG); 12031da177e4SLinus Torvalds card->efbie = 0; 12041da177e4SLinus Torvalds break; 12051da177e4SLinus Torvalds } 1206864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(lb) = BUF_LG; 12071da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, lb); 12081da177e4SLinus Torvalds skb_reserve(lb, NS_SMBUFSIZE); 12098728b834SDavid S. Miller push_rxbufs(card, lb); 12101da177e4SLinus Torvalds } 12111da177e4SLinus Torvalds card->lbfqc = i; 12121da177e4SLinus Torvalds process_rsq(card); 12131da177e4SLinus Torvalds } 12141da177e4SLinus Torvalds 12151da177e4SLinus Torvalds /* Receive Status Queue is 7/8 full */ 1216098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_RSQAF) { 12171da177e4SLinus Torvalds writel(NS_STAT_RSQAF, card->membase + STAT); 12181da177e4SLinus Torvalds RXPRINTK("nicstar%d: RSQ almost full.\n", card->index); 12191da177e4SLinus Torvalds process_rsq(card); 12201da177e4SLinus Torvalds } 12211da177e4SLinus Torvalds 12221da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 12231da177e4SLinus Torvalds PRINTK("nicstar%d: end of interrupt service\n", card->index); 12241da177e4SLinus Torvalds return IRQ_HANDLED; 12251da177e4SLinus Torvalds } 12261da177e4SLinus Torvalds 12271da177e4SLinus Torvalds static int ns_open(struct atm_vcc *vcc) 12281da177e4SLinus Torvalds { 12291da177e4SLinus Torvalds ns_dev *card; 12301da177e4SLinus Torvalds vc_map *vc; 12311da177e4SLinus Torvalds unsigned long tmpl, modl; 12321da177e4SLinus Torvalds int tcr, tcra; /* target cell rate, and absolute value */ 12331da177e4SLinus Torvalds int n = 0; /* Number of entries in the TST. Initialized to remove 12341da177e4SLinus Torvalds the compiler warning. */ 12351da177e4SLinus Torvalds u32 u32d[4]; 12361da177e4SLinus Torvalds int frscdi = 0; /* Index of the SCD. Initialized to remove the compiler 12371da177e4SLinus Torvalds warning. How I wish compilers were clever enough to 12381da177e4SLinus Torvalds tell which variables can truly be used 12391da177e4SLinus Torvalds uninitialized... */ 12401da177e4SLinus Torvalds int inuse; /* tx or rx vc already in use by another vcc */ 12411da177e4SLinus Torvalds short vpi = vcc->vpi; 12421da177e4SLinus Torvalds int vci = vcc->vci; 12431da177e4SLinus Torvalds 12441da177e4SLinus Torvalds card = (ns_dev *) vcc->dev->dev_data; 1245098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: opening vpi.vci %d.%d \n", card->index, (int)vpi, 1246098fde11Schas williams - CONTRACTOR vci); 1247098fde11Schas williams - CONTRACTOR if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { 12481da177e4SLinus Torvalds PRINTK("nicstar%d: unsupported AAL.\n", card->index); 12491da177e4SLinus Torvalds return -EINVAL; 12501da177e4SLinus Torvalds } 12511da177e4SLinus Torvalds 12521da177e4SLinus Torvalds vc = &(card->vcmap[vpi << card->vcibits | vci]); 12531da177e4SLinus Torvalds vcc->dev_data = vc; 12541da177e4SLinus Torvalds 12551da177e4SLinus Torvalds inuse = 0; 12561da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE && vc->tx) 12571da177e4SLinus Torvalds inuse = 1; 12581da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE && vc->rx) 12591da177e4SLinus Torvalds inuse += 2; 1260098fde11Schas williams - CONTRACTOR if (inuse) { 12611da177e4SLinus Torvalds printk("nicstar%d: %s vci already in use.\n", card->index, 12621da177e4SLinus Torvalds inuse == 1 ? "tx" : inuse == 2 ? "rx" : "tx and rx"); 12631da177e4SLinus Torvalds return -EINVAL; 12641da177e4SLinus Torvalds } 12651da177e4SLinus Torvalds 12661da177e4SLinus Torvalds set_bit(ATM_VF_ADDR, &vcc->flags); 12671da177e4SLinus Torvalds 12681da177e4SLinus Torvalds /* NOTE: You are not allowed to modify an open connection's QOS. To change 12691da177e4SLinus Torvalds that, remove the ATM_VF_PARTIAL flag checking. There may be other changes 12701da177e4SLinus Torvalds needed to do that. */ 1271098fde11Schas williams - CONTRACTOR if (!test_bit(ATM_VF_PARTIAL, &vcc->flags)) { 12721da177e4SLinus Torvalds scq_info *scq; 12731da177e4SLinus Torvalds 12741da177e4SLinus Torvalds set_bit(ATM_VF_PARTIAL, &vcc->flags); 1275098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class == ATM_CBR) { 12761da177e4SLinus Torvalds /* Check requested cell rate and availability of SCD */ 1277098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.max_pcr == 0 && vcc->qos.txtp.pcr == 0 1278098fde11Schas williams - CONTRACTOR && vcc->qos.txtp.min_pcr == 0) { 1279098fde11Schas williams - CONTRACTOR PRINTK 1280098fde11Schas williams - CONTRACTOR ("nicstar%d: trying to open a CBR vc with cell rate = 0 \n", 12811da177e4SLinus Torvalds card->index); 12821da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 12831da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 12841da177e4SLinus Torvalds return -EINVAL; 12851da177e4SLinus Torvalds } 12861da177e4SLinus Torvalds 12871da177e4SLinus Torvalds tcr = atm_pcr_goal(&(vcc->qos.txtp)); 12881da177e4SLinus Torvalds tcra = tcr >= 0 ? tcr : -tcr; 12891da177e4SLinus Torvalds 1290098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: target cell rate = %d.\n", 1291098fde11Schas williams - CONTRACTOR card->index, vcc->qos.txtp.max_pcr); 12921da177e4SLinus Torvalds 1293098fde11Schas williams - CONTRACTOR tmpl = 1294098fde11Schas williams - CONTRACTOR (unsigned long)tcra *(unsigned long) 1295098fde11Schas williams - CONTRACTOR NS_TST_NUM_ENTRIES; 12961da177e4SLinus Torvalds modl = tmpl % card->max_pcr; 12971da177e4SLinus Torvalds 12981da177e4SLinus Torvalds n = (int)(tmpl / card->max_pcr); 1299098fde11Schas williams - CONTRACTOR if (tcr > 0) { 1300098fde11Schas williams - CONTRACTOR if (modl > 0) 1301098fde11Schas williams - CONTRACTOR n++; 1302098fde11Schas williams - CONTRACTOR } else if (tcr == 0) { 1303098fde11Schas williams - CONTRACTOR if ((n = 1304098fde11Schas williams - CONTRACTOR (card->tst_free_entries - 1305098fde11Schas williams - CONTRACTOR NS_TST_RESERVED)) <= 0) { 1306098fde11Schas williams - CONTRACTOR PRINTK 1307098fde11Schas williams - CONTRACTOR ("nicstar%d: no CBR bandwidth free.\n", 1308098fde11Schas williams - CONTRACTOR card->index); 13091da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 13101da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 13111da177e4SLinus Torvalds return -EINVAL; 13121da177e4SLinus Torvalds } 13131da177e4SLinus Torvalds } 13141da177e4SLinus Torvalds 1315098fde11Schas williams - CONTRACTOR if (n == 0) { 1316098fde11Schas williams - CONTRACTOR printk 1317098fde11Schas williams - CONTRACTOR ("nicstar%d: selected bandwidth < granularity.\n", 1318098fde11Schas williams - CONTRACTOR card->index); 13191da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 13201da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 13211da177e4SLinus Torvalds return -EINVAL; 13221da177e4SLinus Torvalds } 13231da177e4SLinus Torvalds 1324098fde11Schas williams - CONTRACTOR if (n > (card->tst_free_entries - NS_TST_RESERVED)) { 1325098fde11Schas williams - CONTRACTOR PRINTK 1326098fde11Schas williams - CONTRACTOR ("nicstar%d: not enough free CBR bandwidth.\n", 1327098fde11Schas williams - CONTRACTOR card->index); 13281da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 13291da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 13301da177e4SLinus Torvalds return -EINVAL; 1331098fde11Schas williams - CONTRACTOR } else 13321da177e4SLinus Torvalds card->tst_free_entries -= n; 13331da177e4SLinus Torvalds 1334098fde11Schas williams - CONTRACTOR XPRINTK("nicstar%d: writing %d tst entries.\n", 1335098fde11Schas williams - CONTRACTOR card->index, n); 1336098fde11Schas williams - CONTRACTOR for (frscdi = 0; frscdi < NS_FRSCD_NUM; frscdi++) { 1337098fde11Schas williams - CONTRACTOR if (card->scd2vc[frscdi] == NULL) { 13381da177e4SLinus Torvalds card->scd2vc[frscdi] = vc; 13391da177e4SLinus Torvalds break; 13401da177e4SLinus Torvalds } 13411da177e4SLinus Torvalds } 1342098fde11Schas williams - CONTRACTOR if (frscdi == NS_FRSCD_NUM) { 1343098fde11Schas williams - CONTRACTOR PRINTK 1344098fde11Schas williams - CONTRACTOR ("nicstar%d: no SCD available for CBR channel.\n", 1345098fde11Schas williams - CONTRACTOR card->index); 13461da177e4SLinus Torvalds card->tst_free_entries += n; 13471da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 13481da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 13491da177e4SLinus Torvalds return -EBUSY; 13501da177e4SLinus Torvalds } 13511da177e4SLinus Torvalds 13521da177e4SLinus Torvalds vc->cbr_scd = NS_FRSCD + frscdi * NS_FRSCD_SIZE; 13531da177e4SLinus Torvalds 1354864a3ff6Schas williams - CONTRACTOR scq = get_scq(card, CBR_SCQSIZE, vc->cbr_scd); 1355098fde11Schas williams - CONTRACTOR if (scq == NULL) { 1356098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: can't get fixed rate SCQ.\n", 1357098fde11Schas williams - CONTRACTOR card->index); 13581da177e4SLinus Torvalds card->scd2vc[frscdi] = NULL; 13591da177e4SLinus Torvalds card->tst_free_entries += n; 13601da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 13611da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 13621da177e4SLinus Torvalds return -ENOMEM; 13631da177e4SLinus Torvalds } 13641da177e4SLinus Torvalds vc->scq = scq; 1365864a3ff6Schas williams - CONTRACTOR u32d[0] = scq_virt_to_bus(scq, scq->base); 13661da177e4SLinus Torvalds u32d[1] = (u32) 0x00000000; 13671da177e4SLinus Torvalds u32d[2] = (u32) 0xffffffff; 13681da177e4SLinus Torvalds u32d[3] = (u32) 0x00000000; 13691da177e4SLinus Torvalds ns_write_sram(card, vc->cbr_scd, u32d, 4); 13701da177e4SLinus Torvalds 13711da177e4SLinus Torvalds fill_tst(card, n, vc); 1372098fde11Schas williams - CONTRACTOR } else if (vcc->qos.txtp.traffic_class == ATM_UBR) { 13731da177e4SLinus Torvalds vc->cbr_scd = 0x00000000; 13741da177e4SLinus Torvalds vc->scq = card->scq0; 13751da177e4SLinus Torvalds } 13761da177e4SLinus Torvalds 1377098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class != ATM_NONE) { 13781da177e4SLinus Torvalds vc->tx = 1; 13791da177e4SLinus Torvalds vc->tx_vcc = vcc; 13801da177e4SLinus Torvalds vc->tbd_count = 0; 13811da177e4SLinus Torvalds } 1382098fde11Schas williams - CONTRACTOR if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 13831da177e4SLinus Torvalds u32 status; 13841da177e4SLinus Torvalds 13851da177e4SLinus Torvalds vc->rx = 1; 13861da177e4SLinus Torvalds vc->rx_vcc = vcc; 13871da177e4SLinus Torvalds vc->rx_iov = NULL; 13881da177e4SLinus Torvalds 13891da177e4SLinus Torvalds /* Open the connection in hardware */ 13901da177e4SLinus Torvalds if (vcc->qos.aal == ATM_AAL5) 13911da177e4SLinus Torvalds status = NS_RCTE_AAL5 | NS_RCTE_CONNECTOPEN; 13921da177e4SLinus Torvalds else /* vcc->qos.aal == ATM_AAL0 */ 13931da177e4SLinus Torvalds status = NS_RCTE_AAL0 | NS_RCTE_CONNECTOPEN; 13941da177e4SLinus Torvalds #ifdef RCQ_SUPPORT 13951da177e4SLinus Torvalds status |= NS_RCTE_RAWCELLINTEN; 13961da177e4SLinus Torvalds #endif /* RCQ_SUPPORT */ 1397098fde11Schas williams - CONTRACTOR ns_write_sram(card, 1398098fde11Schas williams - CONTRACTOR NS_RCT + 1399098fde11Schas williams - CONTRACTOR (vpi << card->vcibits | vci) * 14001da177e4SLinus Torvalds NS_RCT_ENTRY_SIZE, &status, 1); 14011da177e4SLinus Torvalds } 14021da177e4SLinus Torvalds 14031da177e4SLinus Torvalds } 14041da177e4SLinus Torvalds 14051da177e4SLinus Torvalds set_bit(ATM_VF_READY, &vcc->flags); 14061da177e4SLinus Torvalds return 0; 14071da177e4SLinus Torvalds } 14081da177e4SLinus Torvalds 14091da177e4SLinus Torvalds static void ns_close(struct atm_vcc *vcc) 14101da177e4SLinus Torvalds { 14111da177e4SLinus Torvalds vc_map *vc; 14121da177e4SLinus Torvalds ns_dev *card; 14131da177e4SLinus Torvalds u32 data; 14141da177e4SLinus Torvalds int i; 14151da177e4SLinus Torvalds 14161da177e4SLinus Torvalds vc = vcc->dev_data; 14171da177e4SLinus Torvalds card = vcc->dev->dev_data; 14181da177e4SLinus Torvalds PRINTK("nicstar%d: closing vpi.vci %d.%d \n", card->index, 14191da177e4SLinus Torvalds (int)vcc->vpi, vcc->vci); 14201da177e4SLinus Torvalds 14211da177e4SLinus Torvalds clear_bit(ATM_VF_READY, &vcc->flags); 14221da177e4SLinus Torvalds 1423098fde11Schas williams - CONTRACTOR if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 14241da177e4SLinus Torvalds u32 addr; 14251da177e4SLinus Torvalds unsigned long flags; 14261da177e4SLinus Torvalds 1427098fde11Schas williams - CONTRACTOR addr = 1428098fde11Schas williams - CONTRACTOR NS_RCT + 1429098fde11Schas williams - CONTRACTOR (vcc->vpi << card->vcibits | vcc->vci) * NS_RCT_ENTRY_SIZE; 143036ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags); 14311da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 1432098fde11Schas williams - CONTRACTOR writel(NS_CMD_CLOSE_CONNECTION | addr << 2, 1433098fde11Schas williams - CONTRACTOR card->membase + CMD); 14341da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags); 14351da177e4SLinus Torvalds 14361da177e4SLinus Torvalds vc->rx = 0; 1437098fde11Schas williams - CONTRACTOR if (vc->rx_iov != NULL) { 14381da177e4SLinus Torvalds struct sk_buff *iovb; 14391da177e4SLinus Torvalds u32 stat; 14401da177e4SLinus Torvalds 14411da177e4SLinus Torvalds stat = readl(card->membase + STAT); 14421da177e4SLinus Torvalds card->sbfqc = ns_stat_sfbqc_get(stat); 14431da177e4SLinus Torvalds card->lbfqc = ns_stat_lfbqc_get(stat); 14441da177e4SLinus Torvalds 1445098fde11Schas williams - CONTRACTOR PRINTK 1446098fde11Schas williams - CONTRACTOR ("nicstar%d: closing a VC with pending rx buffers.\n", 14471da177e4SLinus Torvalds card->index); 14481da177e4SLinus Torvalds iovb = vc->rx_iov; 14491da177e4SLinus Torvalds recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, 1450864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb)); 1451864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb) = 0; 145236ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 14531da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 14541da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 14551da177e4SLinus Torvalds vc->rx_iov = NULL; 14561da177e4SLinus Torvalds } 14571da177e4SLinus Torvalds } 14581da177e4SLinus Torvalds 1459098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class != ATM_NONE) { 14601da177e4SLinus Torvalds vc->tx = 0; 14611da177e4SLinus Torvalds } 14621da177e4SLinus Torvalds 1463098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class == ATM_CBR) { 14641da177e4SLinus Torvalds unsigned long flags; 14651da177e4SLinus Torvalds ns_scqe *scqep; 14661da177e4SLinus Torvalds scq_info *scq; 14671da177e4SLinus Torvalds 14681da177e4SLinus Torvalds scq = vc->scq; 14691da177e4SLinus Torvalds 1470098fde11Schas williams - CONTRACTOR for (;;) { 147136ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags); 14721da177e4SLinus Torvalds scqep = scq->next; 14731da177e4SLinus Torvalds if (scqep == scq->base) 14741da177e4SLinus Torvalds scqep = scq->last; 14751da177e4SLinus Torvalds else 14761da177e4SLinus Torvalds scqep--; 1477098fde11Schas williams - CONTRACTOR if (scqep == scq->tail) { 14781da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 14791da177e4SLinus Torvalds break; 14801da177e4SLinus Torvalds } 14811da177e4SLinus Torvalds /* If the last entry is not a TSR, place one in the SCQ in order to 14821da177e4SLinus Torvalds be able to completely drain it and then close. */ 1483098fde11Schas williams - CONTRACTOR if (!ns_scqe_is_tsr(scqep) && scq->tail != scq->next) { 14841da177e4SLinus Torvalds ns_scqe tsr; 14851da177e4SLinus Torvalds u32 scdi, scqi; 14861da177e4SLinus Torvalds u32 data; 14871da177e4SLinus Torvalds int index; 14881da177e4SLinus Torvalds 14891da177e4SLinus Torvalds tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE); 14901da177e4SLinus Torvalds scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE; 14911da177e4SLinus Torvalds scqi = scq->next - scq->base; 14921da177e4SLinus Torvalds tsr.word_2 = ns_tsr_mkword_2(scdi, scqi); 14931da177e4SLinus Torvalds tsr.word_3 = 0x00000000; 14941da177e4SLinus Torvalds tsr.word_4 = 0x00000000; 14951da177e4SLinus Torvalds *scq->next = tsr; 14961da177e4SLinus Torvalds index = (int)scqi; 14971da177e4SLinus Torvalds scq->skb[index] = NULL; 14981da177e4SLinus Torvalds if (scq->next == scq->last) 14991da177e4SLinus Torvalds scq->next = scq->base; 15001da177e4SLinus Torvalds else 15011da177e4SLinus Torvalds scq->next++; 1502864a3ff6Schas williams - CONTRACTOR data = scq_virt_to_bus(scq, scq->next); 15031da177e4SLinus Torvalds ns_write_sram(card, scq->scd, &data, 1); 15041da177e4SLinus Torvalds } 15051da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 15061da177e4SLinus Torvalds schedule(); 15071da177e4SLinus Torvalds } 15081da177e4SLinus Torvalds 15091da177e4SLinus Torvalds /* Free all TST entries */ 15101da177e4SLinus Torvalds data = NS_TST_OPCODE_VARIABLE; 1511098fde11Schas williams - CONTRACTOR for (i = 0; i < NS_TST_NUM_ENTRIES; i++) { 1512098fde11Schas williams - CONTRACTOR if (card->tste2vc[i] == vc) { 1513098fde11Schas williams - CONTRACTOR ns_write_sram(card, card->tst_addr + i, &data, 1514098fde11Schas williams - CONTRACTOR 1); 15151da177e4SLinus Torvalds card->tste2vc[i] = NULL; 15161da177e4SLinus Torvalds card->tst_free_entries++; 15171da177e4SLinus Torvalds } 15181da177e4SLinus Torvalds } 15191da177e4SLinus Torvalds 15201da177e4SLinus Torvalds card->scd2vc[(vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE] = NULL; 1521864a3ff6Schas williams - CONTRACTOR free_scq(card, vc->scq, vcc); 15221da177e4SLinus Torvalds } 15231da177e4SLinus Torvalds 15241da177e4SLinus Torvalds /* remove all references to vcc before deleting it */ 1525098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class != ATM_NONE) { 15261da177e4SLinus Torvalds unsigned long flags; 15271da177e4SLinus Torvalds scq_info *scq = card->scq0; 15281da177e4SLinus Torvalds 152936ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags); 15301da177e4SLinus Torvalds 15311da177e4SLinus Torvalds for (i = 0; i < scq->num_entries; i++) { 15321da177e4SLinus Torvalds if (scq->skb[i] && ATM_SKB(scq->skb[i])->vcc == vcc) { 15331da177e4SLinus Torvalds ATM_SKB(scq->skb[i])->vcc = NULL; 15341da177e4SLinus Torvalds atm_return(vcc, scq->skb[i]->truesize); 1535098fde11Schas williams - CONTRACTOR PRINTK 1536098fde11Schas williams - CONTRACTOR ("nicstar: deleted pending vcc mapping\n"); 15371da177e4SLinus Torvalds } 15381da177e4SLinus Torvalds } 15391da177e4SLinus Torvalds 15401da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 15411da177e4SLinus Torvalds } 15421da177e4SLinus Torvalds 15431da177e4SLinus Torvalds vcc->dev_data = NULL; 15441da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 15451da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 15461da177e4SLinus Torvalds 15471da177e4SLinus Torvalds #ifdef RX_DEBUG 15481da177e4SLinus Torvalds { 15491da177e4SLinus Torvalds u32 stat, cfg; 15501da177e4SLinus Torvalds stat = readl(card->membase + STAT); 15511da177e4SLinus Torvalds cfg = readl(card->membase + CFG); 15521da177e4SLinus Torvalds printk("STAT = 0x%08X CFG = 0x%08X \n", stat, cfg); 1553098fde11Schas williams - CONTRACTOR printk 1554864a3ff6Schas williams - CONTRACTOR ("TSQ: base = 0x%p next = 0x%p last = 0x%p TSQT = 0x%08X \n", 1555864a3ff6Schas williams - CONTRACTOR card->tsq.base, card->tsq.next, 1556864a3ff6Schas williams - CONTRACTOR card->tsq.last, readl(card->membase + TSQT)); 1557098fde11Schas williams - CONTRACTOR printk 1558864a3ff6Schas williams - CONTRACTOR ("RSQ: base = 0x%p next = 0x%p last = 0x%p RSQT = 0x%08X \n", 1559864a3ff6Schas williams - CONTRACTOR card->rsq.base, card->rsq.next, 1560864a3ff6Schas williams - CONTRACTOR card->rsq.last, readl(card->membase + RSQT)); 15611da177e4SLinus Torvalds printk("Empty free buffer queue interrupt %s \n", 15621da177e4SLinus Torvalds card->efbie ? "enabled" : "disabled"); 15631da177e4SLinus Torvalds printk("SBCNT = %d count = %d LBCNT = %d count = %d \n", 15641da177e4SLinus Torvalds ns_stat_sfbqc_get(stat), card->sbpool.count, 15651da177e4SLinus Torvalds ns_stat_lfbqc_get(stat), card->lbpool.count); 15661da177e4SLinus Torvalds printk("hbpool.count = %d iovpool.count = %d \n", 15671da177e4SLinus Torvalds card->hbpool.count, card->iovpool.count); 15681da177e4SLinus Torvalds } 15691da177e4SLinus Torvalds #endif /* RX_DEBUG */ 15701da177e4SLinus Torvalds } 15711da177e4SLinus Torvalds 15721da177e4SLinus Torvalds static void fill_tst(ns_dev * card, int n, vc_map * vc) 15731da177e4SLinus Torvalds { 15741da177e4SLinus Torvalds u32 new_tst; 15751da177e4SLinus Torvalds unsigned long cl; 15761da177e4SLinus Torvalds int e, r; 15771da177e4SLinus Torvalds u32 data; 15781da177e4SLinus Torvalds 15791da177e4SLinus Torvalds /* It would be very complicated to keep the two TSTs synchronized while 15801da177e4SLinus Torvalds assuring that writes are only made to the inactive TST. So, for now I 15811da177e4SLinus Torvalds will use only one TST. If problems occur, I will change this again */ 15821da177e4SLinus Torvalds 15831da177e4SLinus Torvalds new_tst = card->tst_addr; 15841da177e4SLinus Torvalds 15851da177e4SLinus Torvalds /* Fill procedure */ 15861da177e4SLinus Torvalds 1587098fde11Schas williams - CONTRACTOR for (e = 0; e < NS_TST_NUM_ENTRIES; e++) { 15881da177e4SLinus Torvalds if (card->tste2vc[e] == NULL) 15891da177e4SLinus Torvalds break; 15901da177e4SLinus Torvalds } 15911da177e4SLinus Torvalds if (e == NS_TST_NUM_ENTRIES) { 15921da177e4SLinus Torvalds printk("nicstar%d: No free TST entries found. \n", card->index); 15931da177e4SLinus Torvalds return; 15941da177e4SLinus Torvalds } 15951da177e4SLinus Torvalds 15961da177e4SLinus Torvalds r = n; 15971da177e4SLinus Torvalds cl = NS_TST_NUM_ENTRIES; 15981da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_FIXED, vc->cbr_scd); 15991da177e4SLinus Torvalds 1600098fde11Schas williams - CONTRACTOR while (r > 0) { 1601098fde11Schas williams - CONTRACTOR if (cl >= NS_TST_NUM_ENTRIES && card->tste2vc[e] == NULL) { 16021da177e4SLinus Torvalds card->tste2vc[e] = vc; 16031da177e4SLinus Torvalds ns_write_sram(card, new_tst + e, &data, 1); 16041da177e4SLinus Torvalds cl -= NS_TST_NUM_ENTRIES; 16051da177e4SLinus Torvalds r--; 16061da177e4SLinus Torvalds } 16071da177e4SLinus Torvalds 16081da177e4SLinus Torvalds if (++e == NS_TST_NUM_ENTRIES) { 16091da177e4SLinus Torvalds e = 0; 16101da177e4SLinus Torvalds } 16111da177e4SLinus Torvalds cl += n; 16121da177e4SLinus Torvalds } 16131da177e4SLinus Torvalds 16141da177e4SLinus Torvalds /* End of fill procedure */ 16151da177e4SLinus Torvalds 16161da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_END, new_tst); 16171da177e4SLinus Torvalds ns_write_sram(card, new_tst + NS_TST_NUM_ENTRIES, &data, 1); 16181da177e4SLinus Torvalds ns_write_sram(card, card->tst_addr + NS_TST_NUM_ENTRIES, &data, 1); 16191da177e4SLinus Torvalds card->tst_addr = new_tst; 16201da177e4SLinus Torvalds } 16211da177e4SLinus Torvalds 16221da177e4SLinus Torvalds static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) 16231da177e4SLinus Torvalds { 16241da177e4SLinus Torvalds ns_dev *card; 16251da177e4SLinus Torvalds vc_map *vc; 16261da177e4SLinus Torvalds scq_info *scq; 16271da177e4SLinus Torvalds unsigned long buflen; 16281da177e4SLinus Torvalds ns_scqe scqe; 16291da177e4SLinus Torvalds u32 flags; /* TBD flags, not CPU flags */ 16301da177e4SLinus Torvalds 16311da177e4SLinus Torvalds card = vcc->dev->dev_data; 16321da177e4SLinus Torvalds TXPRINTK("nicstar%d: ns_send() called.\n", card->index); 1633098fde11Schas williams - CONTRACTOR if ((vc = (vc_map *) vcc->dev_data) == NULL) { 1634098fde11Schas williams - CONTRACTOR printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n", 1635098fde11Schas williams - CONTRACTOR card->index); 16361da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 16371da177e4SLinus Torvalds dev_kfree_skb_any(skb); 16381da177e4SLinus Torvalds return -EINVAL; 16391da177e4SLinus Torvalds } 16401da177e4SLinus Torvalds 1641098fde11Schas williams - CONTRACTOR if (!vc->tx) { 1642098fde11Schas williams - CONTRACTOR printk("nicstar%d: Trying to transmit on a non-tx VC.\n", 1643098fde11Schas williams - CONTRACTOR card->index); 16441da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 16451da177e4SLinus Torvalds dev_kfree_skb_any(skb); 16461da177e4SLinus Torvalds return -EINVAL; 16471da177e4SLinus Torvalds } 16481da177e4SLinus Torvalds 1649098fde11Schas williams - CONTRACTOR if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { 1650098fde11Schas williams - CONTRACTOR printk("nicstar%d: Only AAL0 and AAL5 are supported.\n", 1651098fde11Schas williams - CONTRACTOR card->index); 16521da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 16531da177e4SLinus Torvalds dev_kfree_skb_any(skb); 16541da177e4SLinus Torvalds return -EINVAL; 16551da177e4SLinus Torvalds } 16561da177e4SLinus Torvalds 1657098fde11Schas williams - CONTRACTOR if (skb_shinfo(skb)->nr_frags != 0) { 16581da177e4SLinus Torvalds printk("nicstar%d: No scatter-gather yet.\n", card->index); 16591da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 16601da177e4SLinus Torvalds dev_kfree_skb_any(skb); 16611da177e4SLinus Torvalds return -EINVAL; 16621da177e4SLinus Torvalds } 16631da177e4SLinus Torvalds 16641da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 16651da177e4SLinus Torvalds 1666ede58ef2Schas williams - CONTRACTOR NS_PRV_DMA(skb) = dma_map_single(&card->pcidev->dev, skb->data, 1667ede58ef2Schas williams - CONTRACTOR skb->len, DMA_TO_DEVICE); 1668864a3ff6Schas williams - CONTRACTOR 1669098fde11Schas williams - CONTRACTOR if (vcc->qos.aal == ATM_AAL5) { 16701da177e4SLinus Torvalds buflen = (skb->len + 47 + 8) / 48 * 48; /* Multiple of 48 */ 16711da177e4SLinus Torvalds flags = NS_TBD_AAL5; 1672864a3ff6Schas williams - CONTRACTOR scqe.word_2 = cpu_to_le32(NS_PRV_DMA(skb)); 1673864a3ff6Schas williams - CONTRACTOR scqe.word_3 = cpu_to_le32(skb->len); 1674098fde11Schas williams - CONTRACTOR scqe.word_4 = 1675098fde11Schas williams - CONTRACTOR ns_tbd_mkword_4(0, (u32) vcc->vpi, (u32) vcc->vci, 0, 1676098fde11Schas williams - CONTRACTOR ATM_SKB(skb)-> 1677098fde11Schas williams - CONTRACTOR atm_options & ATM_ATMOPT_CLP ? 1 : 0); 16781da177e4SLinus Torvalds flags |= NS_TBD_EOPDU; 1679098fde11Schas williams - CONTRACTOR } else { /* (vcc->qos.aal == ATM_AAL0) */ 1680098fde11Schas williams - CONTRACTOR 16811da177e4SLinus Torvalds buflen = ATM_CELL_PAYLOAD; /* i.e., 48 bytes */ 16821da177e4SLinus Torvalds flags = NS_TBD_AAL0; 1683864a3ff6Schas williams - CONTRACTOR scqe.word_2 = cpu_to_le32(NS_PRV_DMA(skb) + NS_AAL0_HEADER); 16841da177e4SLinus Torvalds scqe.word_3 = cpu_to_le32(0x00000000); 16851da177e4SLinus Torvalds if (*skb->data & 0x02) /* Payload type 1 - end of pdu */ 16861da177e4SLinus Torvalds flags |= NS_TBD_EOPDU; 1687098fde11Schas williams - CONTRACTOR scqe.word_4 = 1688098fde11Schas williams - CONTRACTOR cpu_to_le32(*((u32 *) skb->data) & ~NS_TBD_VC_MASK); 16891da177e4SLinus Torvalds /* Force the VPI/VCI to be the same as in VCC struct */ 1690098fde11Schas williams - CONTRACTOR scqe.word_4 |= 1691098fde11Schas williams - CONTRACTOR cpu_to_le32((((u32) vcc-> 1692098fde11Schas williams - CONTRACTOR vpi) << NS_TBD_VPI_SHIFT | ((u32) vcc-> 1693098fde11Schas williams - CONTRACTOR vci) << 1694098fde11Schas williams - CONTRACTOR NS_TBD_VCI_SHIFT) & NS_TBD_VC_MASK); 16951da177e4SLinus Torvalds } 16961da177e4SLinus Torvalds 1697098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class == ATM_CBR) { 16981da177e4SLinus Torvalds scqe.word_1 = ns_tbd_mkword_1_novbr(flags, (u32) buflen); 16991da177e4SLinus Torvalds scq = ((vc_map *) vcc->dev_data)->scq; 1700098fde11Schas williams - CONTRACTOR } else { 1701098fde11Schas williams - CONTRACTOR scqe.word_1 = 1702098fde11Schas williams - CONTRACTOR ns_tbd_mkword_1(flags, (u32) 1, (u32) 1, (u32) buflen); 17031da177e4SLinus Torvalds scq = card->scq0; 17041da177e4SLinus Torvalds } 17051da177e4SLinus Torvalds 1706098fde11Schas williams - CONTRACTOR if (push_scqe(card, vc, scq, &scqe, skb) != 0) { 17071da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 17081da177e4SLinus Torvalds dev_kfree_skb_any(skb); 17091da177e4SLinus Torvalds return -EIO; 17101da177e4SLinus Torvalds } 17111da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx); 17121da177e4SLinus Torvalds 17131da177e4SLinus Torvalds return 0; 17141da177e4SLinus Torvalds } 17151da177e4SLinus Torvalds 17161da177e4SLinus Torvalds static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd, 17171da177e4SLinus Torvalds struct sk_buff *skb) 17181da177e4SLinus Torvalds { 17191da177e4SLinus Torvalds unsigned long flags; 17201da177e4SLinus Torvalds ns_scqe tsr; 17211da177e4SLinus Torvalds u32 scdi, scqi; 17221da177e4SLinus Torvalds int scq_is_vbr; 17231da177e4SLinus Torvalds u32 data; 17241da177e4SLinus Torvalds int index; 17251da177e4SLinus Torvalds 172636ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags); 1727098fde11Schas williams - CONTRACTOR while (scq->tail == scq->next) { 17281da177e4SLinus Torvalds if (in_interrupt()) { 17291da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 17301da177e4SLinus Torvalds printk("nicstar%d: Error pushing TBD.\n", card->index); 17311da177e4SLinus Torvalds return 1; 17321da177e4SLinus Torvalds } 17331da177e4SLinus Torvalds 17341da177e4SLinus Torvalds scq->full = 1; 1735118ce7abSArnd Bergmann wait_event_interruptible_lock_irq_timeout(scq->scqfull_waitq, 1736118ce7abSArnd Bergmann scq->tail != scq->next, 1737118ce7abSArnd Bergmann scq->lock, 1738098fde11Schas williams - CONTRACTOR SCQFULL_TIMEOUT); 17391da177e4SLinus Torvalds 17401da177e4SLinus Torvalds if (scq->full) { 17411da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 1742098fde11Schas williams - CONTRACTOR printk("nicstar%d: Timeout pushing TBD.\n", 1743098fde11Schas williams - CONTRACTOR card->index); 17441da177e4SLinus Torvalds return 1; 17451da177e4SLinus Torvalds } 17461da177e4SLinus Torvalds } 17471da177e4SLinus Torvalds *scq->next = *tbd; 17481da177e4SLinus Torvalds index = (int)(scq->next - scq->base); 17491da177e4SLinus Torvalds scq->skb[index] = skb; 1750864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: sending skb at 0x%p (pos %d).\n", 1751864a3ff6Schas williams - CONTRACTOR card->index, skb, index); 1752864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: TBD written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%p.\n", 17531da177e4SLinus Torvalds card->index, le32_to_cpu(tbd->word_1), le32_to_cpu(tbd->word_2), 17541da177e4SLinus Torvalds le32_to_cpu(tbd->word_3), le32_to_cpu(tbd->word_4), 1755864a3ff6Schas williams - CONTRACTOR scq->next); 17561da177e4SLinus Torvalds if (scq->next == scq->last) 17571da177e4SLinus Torvalds scq->next = scq->base; 17581da177e4SLinus Torvalds else 17591da177e4SLinus Torvalds scq->next++; 17601da177e4SLinus Torvalds 17611da177e4SLinus Torvalds vc->tbd_count++; 1762098fde11Schas williams - CONTRACTOR if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) { 17631da177e4SLinus Torvalds scq->tbd_count++; 17641da177e4SLinus Torvalds scq_is_vbr = 1; 1765098fde11Schas williams - CONTRACTOR } else 17661da177e4SLinus Torvalds scq_is_vbr = 0; 17671da177e4SLinus Torvalds 1768098fde11Schas williams - CONTRACTOR if (vc->tbd_count >= MAX_TBD_PER_VC 1769098fde11Schas williams - CONTRACTOR || scq->tbd_count >= MAX_TBD_PER_SCQ) { 17701da177e4SLinus Torvalds int has_run = 0; 17711da177e4SLinus Torvalds 1772098fde11Schas williams - CONTRACTOR while (scq->tail == scq->next) { 17731da177e4SLinus Torvalds if (in_interrupt()) { 1774864a3ff6Schas williams - CONTRACTOR data = scq_virt_to_bus(scq, scq->next); 17751da177e4SLinus Torvalds ns_write_sram(card, scq->scd, &data, 1); 17761da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 1777098fde11Schas williams - CONTRACTOR printk("nicstar%d: Error pushing TSR.\n", 1778098fde11Schas williams - CONTRACTOR card->index); 17791da177e4SLinus Torvalds return 0; 17801da177e4SLinus Torvalds } 17811da177e4SLinus Torvalds 17821da177e4SLinus Torvalds scq->full = 1; 1783098fde11Schas williams - CONTRACTOR if (has_run++) 1784098fde11Schas williams - CONTRACTOR break; 1785118ce7abSArnd Bergmann wait_event_interruptible_lock_irq_timeout(scq->scqfull_waitq, 1786118ce7abSArnd Bergmann scq->tail != scq->next, 1787118ce7abSArnd Bergmann scq->lock, 1788098fde11Schas williams - CONTRACTOR SCQFULL_TIMEOUT); 17891da177e4SLinus Torvalds } 17901da177e4SLinus Torvalds 1791098fde11Schas williams - CONTRACTOR if (!scq->full) { 17921da177e4SLinus Torvalds tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE); 17931da177e4SLinus Torvalds if (scq_is_vbr) 17941da177e4SLinus Torvalds scdi = NS_TSR_SCDISVBR; 17951da177e4SLinus Torvalds else 17961da177e4SLinus Torvalds scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE; 17971da177e4SLinus Torvalds scqi = scq->next - scq->base; 17981da177e4SLinus Torvalds tsr.word_2 = ns_tsr_mkword_2(scdi, scqi); 17991da177e4SLinus Torvalds tsr.word_3 = 0x00000000; 18001da177e4SLinus Torvalds tsr.word_4 = 0x00000000; 18011da177e4SLinus Torvalds 18021da177e4SLinus Torvalds *scq->next = tsr; 18031da177e4SLinus Torvalds index = (int)scqi; 18041da177e4SLinus Torvalds scq->skb[index] = NULL; 1805098fde11Schas williams - CONTRACTOR XPRINTK 1806864a3ff6Schas williams - CONTRACTOR ("nicstar%d: TSR written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%p.\n", 1807098fde11Schas williams - CONTRACTOR card->index, le32_to_cpu(tsr.word_1), 1808098fde11Schas williams - CONTRACTOR le32_to_cpu(tsr.word_2), le32_to_cpu(tsr.word_3), 1809864a3ff6Schas williams - CONTRACTOR le32_to_cpu(tsr.word_4), scq->next); 18101da177e4SLinus Torvalds if (scq->next == scq->last) 18111da177e4SLinus Torvalds scq->next = scq->base; 18121da177e4SLinus Torvalds else 18131da177e4SLinus Torvalds scq->next++; 18141da177e4SLinus Torvalds vc->tbd_count = 0; 18151da177e4SLinus Torvalds scq->tbd_count = 0; 1816098fde11Schas williams - CONTRACTOR } else 1817098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: Timeout pushing TSR.\n", 1818098fde11Schas williams - CONTRACTOR card->index); 18191da177e4SLinus Torvalds } 1820864a3ff6Schas williams - CONTRACTOR data = scq_virt_to_bus(scq, scq->next); 18211da177e4SLinus Torvalds ns_write_sram(card, scq->scd, &data, 1); 18221da177e4SLinus Torvalds 18231da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 18241da177e4SLinus Torvalds 18251da177e4SLinus Torvalds return 0; 18261da177e4SLinus Torvalds } 18271da177e4SLinus Torvalds 18281da177e4SLinus Torvalds static void process_tsq(ns_dev * card) 18291da177e4SLinus Torvalds { 18301da177e4SLinus Torvalds u32 scdi; 18311da177e4SLinus Torvalds scq_info *scq; 18321da177e4SLinus Torvalds ns_tsi *previous = NULL, *one_ahead, *two_ahead; 18331da177e4SLinus Torvalds int serviced_entries; /* flag indicating at least on entry was serviced */ 18341da177e4SLinus Torvalds 18351da177e4SLinus Torvalds serviced_entries = 0; 18361da177e4SLinus Torvalds 18371da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last) 18381da177e4SLinus Torvalds one_ahead = card->tsq.base; 18391da177e4SLinus Torvalds else 18401da177e4SLinus Torvalds one_ahead = card->tsq.next + 1; 18411da177e4SLinus Torvalds 18421da177e4SLinus Torvalds if (one_ahead == card->tsq.last) 18431da177e4SLinus Torvalds two_ahead = card->tsq.base; 18441da177e4SLinus Torvalds else 18451da177e4SLinus Torvalds two_ahead = one_ahead + 1; 18461da177e4SLinus Torvalds 18471da177e4SLinus Torvalds while (!ns_tsi_isempty(card->tsq.next) || !ns_tsi_isempty(one_ahead) || 18481da177e4SLinus Torvalds !ns_tsi_isempty(two_ahead)) 18491da177e4SLinus Torvalds /* At most two empty, as stated in the 77201 errata */ 18501da177e4SLinus Torvalds { 18511da177e4SLinus Torvalds serviced_entries = 1; 18521da177e4SLinus Torvalds 18531da177e4SLinus Torvalds /* Skip the one or two possible empty entries */ 18541da177e4SLinus Torvalds while (ns_tsi_isempty(card->tsq.next)) { 18551da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last) 18561da177e4SLinus Torvalds card->tsq.next = card->tsq.base; 18571da177e4SLinus Torvalds else 18581da177e4SLinus Torvalds card->tsq.next++; 18591da177e4SLinus Torvalds } 18601da177e4SLinus Torvalds 1861098fde11Schas williams - CONTRACTOR if (!ns_tsi_tmrof(card->tsq.next)) { 18621da177e4SLinus Torvalds scdi = ns_tsi_getscdindex(card->tsq.next); 18631da177e4SLinus Torvalds if (scdi == NS_TSI_SCDISVBR) 18641da177e4SLinus Torvalds scq = card->scq0; 1865098fde11Schas williams - CONTRACTOR else { 1866098fde11Schas williams - CONTRACTOR if (card->scd2vc[scdi] == NULL) { 1867098fde11Schas williams - CONTRACTOR printk 1868098fde11Schas williams - CONTRACTOR ("nicstar%d: could not find VC from SCD index.\n", 18691da177e4SLinus Torvalds card->index); 18701da177e4SLinus Torvalds ns_tsi_init(card->tsq.next); 18711da177e4SLinus Torvalds return; 18721da177e4SLinus Torvalds } 18731da177e4SLinus Torvalds scq = card->scd2vc[scdi]->scq; 18741da177e4SLinus Torvalds } 18751da177e4SLinus Torvalds drain_scq(card, scq, ns_tsi_getscqpos(card->tsq.next)); 18761da177e4SLinus Torvalds scq->full = 0; 18771da177e4SLinus Torvalds wake_up_interruptible(&(scq->scqfull_waitq)); 18781da177e4SLinus Torvalds } 18791da177e4SLinus Torvalds 18801da177e4SLinus Torvalds ns_tsi_init(card->tsq.next); 18811da177e4SLinus Torvalds previous = card->tsq.next; 18821da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last) 18831da177e4SLinus Torvalds card->tsq.next = card->tsq.base; 18841da177e4SLinus Torvalds else 18851da177e4SLinus Torvalds card->tsq.next++; 18861da177e4SLinus Torvalds 18871da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last) 18881da177e4SLinus Torvalds one_ahead = card->tsq.base; 18891da177e4SLinus Torvalds else 18901da177e4SLinus Torvalds one_ahead = card->tsq.next + 1; 18911da177e4SLinus Torvalds 18921da177e4SLinus Torvalds if (one_ahead == card->tsq.last) 18931da177e4SLinus Torvalds two_ahead = card->tsq.base; 18941da177e4SLinus Torvalds else 18951da177e4SLinus Torvalds two_ahead = one_ahead + 1; 18961da177e4SLinus Torvalds } 18971da177e4SLinus Torvalds 1898864a3ff6Schas williams - CONTRACTOR if (serviced_entries) 1899864a3ff6Schas williams - CONTRACTOR writel(PTR_DIFF(previous, card->tsq.base), 19001da177e4SLinus Torvalds card->membase + TSQH); 19011da177e4SLinus Torvalds } 19021da177e4SLinus Torvalds 19031da177e4SLinus Torvalds static void drain_scq(ns_dev * card, scq_info * scq, int pos) 19041da177e4SLinus Torvalds { 19051da177e4SLinus Torvalds struct atm_vcc *vcc; 19061da177e4SLinus Torvalds struct sk_buff *skb; 19071da177e4SLinus Torvalds int i; 19081da177e4SLinus Torvalds unsigned long flags; 19091da177e4SLinus Torvalds 1910864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: drain_scq() called, scq at 0x%p, pos %d.\n", 1911864a3ff6Schas williams - CONTRACTOR card->index, scq, pos); 1912098fde11Schas williams - CONTRACTOR if (pos >= scq->num_entries) { 19131da177e4SLinus Torvalds printk("nicstar%d: Bad index on drain_scq().\n", card->index); 19141da177e4SLinus Torvalds return; 19151da177e4SLinus Torvalds } 19161da177e4SLinus Torvalds 191736ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags); 19181da177e4SLinus Torvalds i = (int)(scq->tail - scq->base); 19191da177e4SLinus Torvalds if (++i == scq->num_entries) 19201da177e4SLinus Torvalds i = 0; 1921098fde11Schas williams - CONTRACTOR while (i != pos) { 19221da177e4SLinus Torvalds skb = scq->skb[i]; 1923864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: freeing skb at 0x%p (index %d).\n", 1924864a3ff6Schas williams - CONTRACTOR card->index, skb, i); 1925098fde11Schas williams - CONTRACTOR if (skb != NULL) { 1926ede58ef2Schas williams - CONTRACTOR dma_unmap_single(&card->pcidev->dev, 1927864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb), 1928864a3ff6Schas williams - CONTRACTOR skb->len, 1929ede58ef2Schas williams - CONTRACTOR DMA_TO_DEVICE); 19301da177e4SLinus Torvalds vcc = ATM_SKB(skb)->vcc; 19311da177e4SLinus Torvalds if (vcc && vcc->pop != NULL) { 19321da177e4SLinus Torvalds vcc->pop(vcc, skb); 19331da177e4SLinus Torvalds } else { 19341da177e4SLinus Torvalds dev_kfree_skb_irq(skb); 19351da177e4SLinus Torvalds } 19361da177e4SLinus Torvalds scq->skb[i] = NULL; 19371da177e4SLinus Torvalds } 19381da177e4SLinus Torvalds if (++i == scq->num_entries) 19391da177e4SLinus Torvalds i = 0; 19401da177e4SLinus Torvalds } 19411da177e4SLinus Torvalds scq->tail = scq->base + pos; 19421da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 19431da177e4SLinus Torvalds } 19441da177e4SLinus Torvalds 19451da177e4SLinus Torvalds static void process_rsq(ns_dev * card) 19461da177e4SLinus Torvalds { 19471da177e4SLinus Torvalds ns_rsqe *previous; 19481da177e4SLinus Torvalds 19491da177e4SLinus Torvalds if (!ns_rsqe_valid(card->rsq.next)) 19501da177e4SLinus Torvalds return; 19512087ff3eSDavid Howells do { 19521da177e4SLinus Torvalds dequeue_rx(card, card->rsq.next); 19531da177e4SLinus Torvalds ns_rsqe_init(card->rsq.next); 19541da177e4SLinus Torvalds previous = card->rsq.next; 19551da177e4SLinus Torvalds if (card->rsq.next == card->rsq.last) 19561da177e4SLinus Torvalds card->rsq.next = card->rsq.base; 19571da177e4SLinus Torvalds else 19581da177e4SLinus Torvalds card->rsq.next++; 19592087ff3eSDavid Howells } while (ns_rsqe_valid(card->rsq.next)); 1960864a3ff6Schas williams - CONTRACTOR writel(PTR_DIFF(previous, card->rsq.base), card->membase + RSQH); 19611da177e4SLinus Torvalds } 19621da177e4SLinus Torvalds 19631da177e4SLinus Torvalds static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) 19641da177e4SLinus Torvalds { 19651da177e4SLinus Torvalds u32 vpi, vci; 19661da177e4SLinus Torvalds vc_map *vc; 19671da177e4SLinus Torvalds struct sk_buff *iovb; 19681da177e4SLinus Torvalds struct iovec *iov; 19691da177e4SLinus Torvalds struct atm_vcc *vcc; 19701da177e4SLinus Torvalds struct sk_buff *skb; 19711da177e4SLinus Torvalds unsigned short aal5_len; 19721da177e4SLinus Torvalds int len; 19731da177e4SLinus Torvalds u32 stat; 1974864a3ff6Schas williams - CONTRACTOR u32 id; 19751da177e4SLinus Torvalds 19761da177e4SLinus Torvalds stat = readl(card->membase + STAT); 19771da177e4SLinus Torvalds card->sbfqc = ns_stat_sfbqc_get(stat); 19781da177e4SLinus Torvalds card->lbfqc = ns_stat_lfbqc_get(stat); 19791da177e4SLinus Torvalds 1980864a3ff6Schas williams - CONTRACTOR id = le32_to_cpu(rsqe->buffer_handle); 1981d3e709e6SMatthew Wilcox skb = idr_remove(&card->idr, id); 1982864a3ff6Schas williams - CONTRACTOR if (!skb) { 1983864a3ff6Schas williams - CONTRACTOR RXPRINTK(KERN_ERR 1984d3e709e6SMatthew Wilcox "nicstar%d: skb not found!\n", card->index); 1985864a3ff6Schas williams - CONTRACTOR return; 1986864a3ff6Schas williams - CONTRACTOR } 1987ede58ef2Schas williams - CONTRACTOR dma_sync_single_for_cpu(&card->pcidev->dev, 1988864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb), 1989864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM 1990864a3ff6Schas williams - CONTRACTOR ? NS_SMSKBSIZE : NS_LGSKBSIZE), 1991ede58ef2Schas williams - CONTRACTOR DMA_FROM_DEVICE); 1992ede58ef2Schas williams - CONTRACTOR dma_unmap_single(&card->pcidev->dev, 1993864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb), 1994864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM 1995864a3ff6Schas williams - CONTRACTOR ? NS_SMSKBSIZE : NS_LGSKBSIZE), 1996ede58ef2Schas williams - CONTRACTOR DMA_FROM_DEVICE); 19971da177e4SLinus Torvalds vpi = ns_rsqe_vpi(rsqe); 19981da177e4SLinus Torvalds vci = ns_rsqe_vci(rsqe); 1999098fde11Schas williams - CONTRACTOR if (vpi >= 1UL << card->vpibits || vci >= 1UL << card->vcibits) { 20001da177e4SLinus Torvalds printk("nicstar%d: SDU received for out-of-range vc %d.%d.\n", 20011da177e4SLinus Torvalds card->index, vpi, vci); 20021da177e4SLinus Torvalds recycle_rx_buf(card, skb); 20031da177e4SLinus Torvalds return; 20041da177e4SLinus Torvalds } 20051da177e4SLinus Torvalds 20061da177e4SLinus Torvalds vc = &(card->vcmap[vpi << card->vcibits | vci]); 2007098fde11Schas williams - CONTRACTOR if (!vc->rx) { 20081da177e4SLinus Torvalds RXPRINTK("nicstar%d: SDU received on non-rx vc %d.%d.\n", 20091da177e4SLinus Torvalds card->index, vpi, vci); 20101da177e4SLinus Torvalds recycle_rx_buf(card, skb); 20111da177e4SLinus Torvalds return; 20121da177e4SLinus Torvalds } 20131da177e4SLinus Torvalds 20141da177e4SLinus Torvalds vcc = vc->rx_vcc; 20151da177e4SLinus Torvalds 2016098fde11Schas williams - CONTRACTOR if (vcc->qos.aal == ATM_AAL0) { 20171da177e4SLinus Torvalds struct sk_buff *sb; 20181da177e4SLinus Torvalds unsigned char *cell; 20191da177e4SLinus Torvalds int i; 20201da177e4SLinus Torvalds 20211da177e4SLinus Torvalds cell = skb->data; 2022098fde11Schas williams - CONTRACTOR for (i = ns_rsqe_cellcount(rsqe); i; i--) { 20230ba8abb7SMarkus Elfring sb = dev_alloc_skb(NS_SMSKBSIZE); 20240ba8abb7SMarkus Elfring if (!sb) { 2025098fde11Schas williams - CONTRACTOR printk 2026098fde11Schas williams - CONTRACTOR ("nicstar%d: Can't allocate buffers for aal0.\n", 20271da177e4SLinus Torvalds card->index); 20281da177e4SLinus Torvalds atomic_add(i, &vcc->stats->rx_drop); 20291da177e4SLinus Torvalds break; 20301da177e4SLinus Torvalds } 2031098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, sb->truesize)) { 2032098fde11Schas williams - CONTRACTOR RXPRINTK 2033098fde11Schas williams - CONTRACTOR ("nicstar%d: atm_charge() dropped aal0 packets.\n", 20341da177e4SLinus Torvalds card->index); 20351da177e4SLinus Torvalds atomic_add(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */ 20361da177e4SLinus Torvalds dev_kfree_skb_any(sb); 20371da177e4SLinus Torvalds break; 20381da177e4SLinus Torvalds } 20391da177e4SLinus Torvalds /* Rebuild the header */ 20401da177e4SLinus Torvalds *((u32 *) sb->data) = le32_to_cpu(rsqe->word_1) << 4 | 20411da177e4SLinus Torvalds (ns_rsqe_clp(rsqe) ? 0x00000001 : 0x00000000); 20421da177e4SLinus Torvalds if (i == 1 && ns_rsqe_eopdu(rsqe)) 20431da177e4SLinus Torvalds *((u32 *) sb->data) |= 0x00000002; 20441da177e4SLinus Torvalds skb_put(sb, NS_AAL0_HEADER); 204527a884dcSArnaldo Carvalho de Melo memcpy(skb_tail_pointer(sb), cell, ATM_CELL_PAYLOAD); 20461da177e4SLinus Torvalds skb_put(sb, ATM_CELL_PAYLOAD); 20471da177e4SLinus Torvalds ATM_SKB(sb)->vcc = vcc; 2048a61bbcf2SPatrick McHardy __net_timestamp(sb); 20491da177e4SLinus Torvalds vcc->push(vcc, sb); 20501da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 20511da177e4SLinus Torvalds cell += ATM_CELL_PAYLOAD; 20521da177e4SLinus Torvalds } 20531da177e4SLinus Torvalds 20541da177e4SLinus Torvalds recycle_rx_buf(card, skb); 20551da177e4SLinus Torvalds return; 20561da177e4SLinus Torvalds } 20571da177e4SLinus Torvalds 20581da177e4SLinus Torvalds /* To reach this point, the AAL layer can only be AAL5 */ 20591da177e4SLinus Torvalds 2060098fde11Schas williams - CONTRACTOR if ((iovb = vc->rx_iov) == NULL) { 20611da177e4SLinus Torvalds iovb = skb_dequeue(&(card->iovpool.queue)); 2062098fde11Schas williams - CONTRACTOR if (iovb == NULL) { /* No buffers in the queue */ 20631da177e4SLinus Torvalds iovb = alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC); 2064098fde11Schas williams - CONTRACTOR if (iovb == NULL) { 2065098fde11Schas williams - CONTRACTOR printk("nicstar%d: Out of iovec buffers.\n", 2066098fde11Schas williams - CONTRACTOR card->index); 20671da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 20681da177e4SLinus Torvalds recycle_rx_buf(card, skb); 20691da177e4SLinus Torvalds return; 20701da177e4SLinus Torvalds } 2071864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE; 2072098fde11Schas williams - CONTRACTOR } else if (--card->iovpool.count < card->iovnr.min) { 20731da177e4SLinus Torvalds struct sk_buff *new_iovb; 2074098fde11Schas williams - CONTRACTOR if ((new_iovb = 2075098fde11Schas williams - CONTRACTOR alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC)) != NULL) { 2076864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE; 20771da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, new_iovb); 20781da177e4SLinus Torvalds card->iovpool.count++; 20791da177e4SLinus Torvalds } 20801da177e4SLinus Torvalds } 20811da177e4SLinus Torvalds vc->rx_iov = iovb; 2082864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb) = 0; 20831da177e4SLinus Torvalds iovb->len = 0; 208427a884dcSArnaldo Carvalho de Melo iovb->data = iovb->head; 208527a884dcSArnaldo Carvalho de Melo skb_reset_tail_pointer(iovb); 20861da177e4SLinus Torvalds /* IMPORTANT: a pointer to the sk_buff containing the small or large 20871da177e4SLinus Torvalds buffer is stored as iovec base, NOT a pointer to the 20881da177e4SLinus Torvalds small or large buffer itself. */ 2089864a3ff6Schas williams - CONTRACTOR } else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) { 20901da177e4SLinus Torvalds printk("nicstar%d: received too big AAL5 SDU.\n", card->index); 20911da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 2092098fde11Schas williams - CONTRACTOR recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, 2093098fde11Schas williams - CONTRACTOR NS_MAX_IOVECS); 2094864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb) = 0; 20951da177e4SLinus Torvalds iovb->len = 0; 209627a884dcSArnaldo Carvalho de Melo iovb->data = iovb->head; 209727a884dcSArnaldo Carvalho de Melo skb_reset_tail_pointer(iovb); 20981da177e4SLinus Torvalds } 2099864a3ff6Schas williams - CONTRACTOR iov = &((struct iovec *)iovb->data)[NS_PRV_IOVCNT(iovb)++]; 21001da177e4SLinus Torvalds iov->iov_base = (void *)skb; 21011da177e4SLinus Torvalds iov->iov_len = ns_rsqe_cellcount(rsqe) * 48; 21021da177e4SLinus Torvalds iovb->len += iov->iov_len; 21031da177e4SLinus Torvalds 2104864a3ff6Schas williams - CONTRACTOR #ifdef EXTRA_DEBUG 2105864a3ff6Schas williams - CONTRACTOR if (NS_PRV_IOVCNT(iovb) == 1) { 2106864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) != BUF_SM) { 2107098fde11Schas williams - CONTRACTOR printk 2108098fde11Schas williams - CONTRACTOR ("nicstar%d: Expected a small buffer, and this is not one.\n", 21091da177e4SLinus Torvalds card->index); 21101da177e4SLinus Torvalds which_list(card, skb); 21111da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 21121da177e4SLinus Torvalds recycle_rx_buf(card, skb); 21131da177e4SLinus Torvalds vc->rx_iov = NULL; 21141da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 21151da177e4SLinus Torvalds return; 21161da177e4SLinus Torvalds } 2117864a3ff6Schas williams - CONTRACTOR } else { /* NS_PRV_IOVCNT(iovb) >= 2 */ 2118098fde11Schas williams - CONTRACTOR 2119864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) != BUF_LG) { 2120098fde11Schas williams - CONTRACTOR printk 2121098fde11Schas williams - CONTRACTOR ("nicstar%d: Expected a large buffer, and this is not one.\n", 21221da177e4SLinus Torvalds card->index); 21231da177e4SLinus Torvalds which_list(card, skb); 21241da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 21251da177e4SLinus Torvalds recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, 2126864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb)); 21271da177e4SLinus Torvalds vc->rx_iov = NULL; 21281da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 21291da177e4SLinus Torvalds return; 21301da177e4SLinus Torvalds } 21311da177e4SLinus Torvalds } 2132864a3ff6Schas williams - CONTRACTOR #endif /* EXTRA_DEBUG */ 21331da177e4SLinus Torvalds 2134098fde11Schas williams - CONTRACTOR if (ns_rsqe_eopdu(rsqe)) { 21351da177e4SLinus Torvalds /* This works correctly regardless of the endianness of the host */ 2136864a3ff6Schas williams - CONTRACTOR unsigned char *L1L2 = (unsigned char *) 2137864a3ff6Schas williams - CONTRACTOR (skb->data + iov->iov_len - 6); 21381da177e4SLinus Torvalds aal5_len = L1L2[0] << 8 | L1L2[1]; 21391da177e4SLinus Torvalds len = (aal5_len == 0x0000) ? 0x10000 : aal5_len; 21401da177e4SLinus Torvalds if (ns_rsqe_crcerr(rsqe) || 2141098fde11Schas williams - CONTRACTOR len + 8 > iovb->len || len + (47 + 8) < iovb->len) { 21421da177e4SLinus Torvalds printk("nicstar%d: AAL5 CRC error", card->index); 21431da177e4SLinus Torvalds if (len + 8 > iovb->len || len + (47 + 8) < iovb->len) 21441da177e4SLinus Torvalds printk(" - PDU size mismatch.\n"); 21451da177e4SLinus Torvalds else 21461da177e4SLinus Torvalds printk(".\n"); 21471da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 21481da177e4SLinus Torvalds recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, 2149864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb)); 21501da177e4SLinus Torvalds vc->rx_iov = NULL; 21511da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 21521da177e4SLinus Torvalds return; 21531da177e4SLinus Torvalds } 21541da177e4SLinus Torvalds 21551da177e4SLinus Torvalds /* By this point we (hopefully) have a complete SDU without errors. */ 21561da177e4SLinus Torvalds 2157864a3ff6Schas williams - CONTRACTOR if (NS_PRV_IOVCNT(iovb) == 1) { /* Just a small buffer */ 21581da177e4SLinus Torvalds /* skb points to a small buffer */ 2159098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, skb->truesize)) { 21608728b834SDavid S. Miller push_rxbufs(card, skb); 21611da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 2162098fde11Schas williams - CONTRACTOR } else { 21631da177e4SLinus Torvalds skb_put(skb, len); 21641da177e4SLinus Torvalds dequeue_sm_buf(card, skb); 21651da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 2166a61bbcf2SPatrick McHardy __net_timestamp(skb); 21671da177e4SLinus Torvalds vcc->push(vcc, skb); 21681da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 21691da177e4SLinus Torvalds } 2170864a3ff6Schas williams - CONTRACTOR } else if (NS_PRV_IOVCNT(iovb) == 2) { /* One small plus one large buffer */ 21711da177e4SLinus Torvalds struct sk_buff *sb; 21721da177e4SLinus Torvalds 21731da177e4SLinus Torvalds sb = (struct sk_buff *)(iov - 1)->iov_base; 21741da177e4SLinus Torvalds /* skb points to a large buffer */ 21751da177e4SLinus Torvalds 2176098fde11Schas williams - CONTRACTOR if (len <= NS_SMBUFSIZE) { 2177098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, sb->truesize)) { 21788728b834SDavid S. Miller push_rxbufs(card, sb); 21791da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 2180098fde11Schas williams - CONTRACTOR } else { 21811da177e4SLinus Torvalds skb_put(sb, len); 21821da177e4SLinus Torvalds dequeue_sm_buf(card, sb); 21831da177e4SLinus Torvalds ATM_SKB(sb)->vcc = vcc; 2184a61bbcf2SPatrick McHardy __net_timestamp(sb); 21851da177e4SLinus Torvalds vcc->push(vcc, sb); 21861da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 21871da177e4SLinus Torvalds } 21881da177e4SLinus Torvalds 21898728b834SDavid S. Miller push_rxbufs(card, skb); 21901da177e4SLinus Torvalds 2191098fde11Schas williams - CONTRACTOR } else { /* len > NS_SMBUFSIZE, the usual case */ 2192098fde11Schas williams - CONTRACTOR 2193098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, skb->truesize)) { 21948728b834SDavid S. Miller push_rxbufs(card, skb); 21951da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 2196098fde11Schas williams - CONTRACTOR } else { 21971da177e4SLinus Torvalds dequeue_lg_buf(card, skb); 21981da177e4SLinus Torvalds skb_push(skb, NS_SMBUFSIZE); 2199098fde11Schas williams - CONTRACTOR skb_copy_from_linear_data(sb, skb->data, 2200098fde11Schas williams - CONTRACTOR NS_SMBUFSIZE); 22011da177e4SLinus Torvalds skb_put(skb, len - NS_SMBUFSIZE); 22021da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 2203a61bbcf2SPatrick McHardy __net_timestamp(skb); 22041da177e4SLinus Torvalds vcc->push(vcc, skb); 22051da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 22061da177e4SLinus Torvalds } 22071da177e4SLinus Torvalds 22088728b834SDavid S. Miller push_rxbufs(card, sb); 22091da177e4SLinus Torvalds 22101da177e4SLinus Torvalds } 22111da177e4SLinus Torvalds 2212098fde11Schas williams - CONTRACTOR } else { /* Must push a huge buffer */ 2213098fde11Schas williams - CONTRACTOR 22141da177e4SLinus Torvalds struct sk_buff *hb, *sb, *lb; 22151da177e4SLinus Torvalds int remaining, tocopy; 22161da177e4SLinus Torvalds int j; 22171da177e4SLinus Torvalds 22181da177e4SLinus Torvalds hb = skb_dequeue(&(card->hbpool.queue)); 2219098fde11Schas williams - CONTRACTOR if (hb == NULL) { /* No buffers in the queue */ 22201da177e4SLinus Torvalds 22211da177e4SLinus Torvalds hb = dev_alloc_skb(NS_HBUFSIZE); 2222098fde11Schas williams - CONTRACTOR if (hb == NULL) { 2223098fde11Schas williams - CONTRACTOR printk 2224098fde11Schas williams - CONTRACTOR ("nicstar%d: Out of huge buffers.\n", 2225098fde11Schas williams - CONTRACTOR card->index); 22261da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 2227098fde11Schas williams - CONTRACTOR recycle_iovec_rx_bufs(card, 2228098fde11Schas williams - CONTRACTOR (struct iovec *) 2229098fde11Schas williams - CONTRACTOR iovb->data, 2230864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb)); 22311da177e4SLinus Torvalds vc->rx_iov = NULL; 22321da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 22331da177e4SLinus Torvalds return; 2234098fde11Schas williams - CONTRACTOR } else if (card->hbpool.count < card->hbnr.min) { 22351da177e4SLinus Torvalds struct sk_buff *new_hb; 2236098fde11Schas williams - CONTRACTOR if ((new_hb = 2237098fde11Schas williams - CONTRACTOR dev_alloc_skb(NS_HBUFSIZE)) != 2238098fde11Schas williams - CONTRACTOR NULL) { 2239098fde11Schas williams - CONTRACTOR skb_queue_tail(&card->hbpool. 2240098fde11Schas williams - CONTRACTOR queue, new_hb); 22411da177e4SLinus Torvalds card->hbpool.count++; 22421da177e4SLinus Torvalds } 22431da177e4SLinus Torvalds } 2244864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(hb) = BUF_NONE; 2245098fde11Schas williams - CONTRACTOR } else if (--card->hbpool.count < card->hbnr.min) { 22461da177e4SLinus Torvalds struct sk_buff *new_hb; 2247098fde11Schas williams - CONTRACTOR if ((new_hb = 2248098fde11Schas williams - CONTRACTOR dev_alloc_skb(NS_HBUFSIZE)) != NULL) { 2249864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_hb) = BUF_NONE; 2250098fde11Schas williams - CONTRACTOR skb_queue_tail(&card->hbpool.queue, 2251098fde11Schas williams - CONTRACTOR new_hb); 22521da177e4SLinus Torvalds card->hbpool.count++; 22531da177e4SLinus Torvalds } 2254098fde11Schas williams - CONTRACTOR if (card->hbpool.count < card->hbnr.min) { 2255098fde11Schas williams - CONTRACTOR if ((new_hb = 2256098fde11Schas williams - CONTRACTOR dev_alloc_skb(NS_HBUFSIZE)) != 2257098fde11Schas williams - CONTRACTOR NULL) { 2258864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_hb) = 2259098fde11Schas williams - CONTRACTOR BUF_NONE; 2260098fde11Schas williams - CONTRACTOR skb_queue_tail(&card->hbpool. 2261098fde11Schas williams - CONTRACTOR queue, new_hb); 22621da177e4SLinus Torvalds card->hbpool.count++; 22631da177e4SLinus Torvalds } 22641da177e4SLinus Torvalds } 22651da177e4SLinus Torvalds } 22661da177e4SLinus Torvalds 22671da177e4SLinus Torvalds iov = (struct iovec *)iovb->data; 22681da177e4SLinus Torvalds 2269098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, hb->truesize)) { 2270098fde11Schas williams - CONTRACTOR recycle_iovec_rx_bufs(card, iov, 2271864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb)); 2272098fde11Schas williams - CONTRACTOR if (card->hbpool.count < card->hbnr.max) { 22731da177e4SLinus Torvalds skb_queue_tail(&card->hbpool.queue, hb); 22741da177e4SLinus Torvalds card->hbpool.count++; 2275098fde11Schas williams - CONTRACTOR } else 22761da177e4SLinus Torvalds dev_kfree_skb_any(hb); 22771da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 2278098fde11Schas williams - CONTRACTOR } else { 22791da177e4SLinus Torvalds /* Copy the small buffer to the huge buffer */ 22801da177e4SLinus Torvalds sb = (struct sk_buff *)iov->iov_base; 2281098fde11Schas williams - CONTRACTOR skb_copy_from_linear_data(sb, hb->data, 2282098fde11Schas williams - CONTRACTOR iov->iov_len); 22831da177e4SLinus Torvalds skb_put(hb, iov->iov_len); 22841da177e4SLinus Torvalds remaining = len - iov->iov_len; 22851da177e4SLinus Torvalds iov++; 22861da177e4SLinus Torvalds /* Free the small buffer */ 22878728b834SDavid S. Miller push_rxbufs(card, sb); 22881da177e4SLinus Torvalds 22891da177e4SLinus Torvalds /* Copy all large buffers to the huge buffer and free them */ 2290864a3ff6Schas williams - CONTRACTOR for (j = 1; j < NS_PRV_IOVCNT(iovb); j++) { 22911da177e4SLinus Torvalds lb = (struct sk_buff *)iov->iov_base; 2292098fde11Schas williams - CONTRACTOR tocopy = 2293098fde11Schas williams - CONTRACTOR min_t(int, remaining, iov->iov_len); 2294098fde11Schas williams - CONTRACTOR skb_copy_from_linear_data(lb, 2295098fde11Schas williams - CONTRACTOR skb_tail_pointer 2296098fde11Schas williams - CONTRACTOR (hb), tocopy); 22971da177e4SLinus Torvalds skb_put(hb, tocopy); 22981da177e4SLinus Torvalds iov++; 22991da177e4SLinus Torvalds remaining -= tocopy; 23008728b834SDavid S. Miller push_rxbufs(card, lb); 23011da177e4SLinus Torvalds } 23021da177e4SLinus Torvalds #ifdef EXTRA_DEBUG 23031da177e4SLinus Torvalds if (remaining != 0 || hb->len != len) 2304098fde11Schas williams - CONTRACTOR printk 2305098fde11Schas williams - CONTRACTOR ("nicstar%d: Huge buffer len mismatch.\n", 2306098fde11Schas williams - CONTRACTOR card->index); 23071da177e4SLinus Torvalds #endif /* EXTRA_DEBUG */ 23081da177e4SLinus Torvalds ATM_SKB(hb)->vcc = vcc; 2309a61bbcf2SPatrick McHardy __net_timestamp(hb); 23101da177e4SLinus Torvalds vcc->push(vcc, hb); 23111da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 23121da177e4SLinus Torvalds } 23131da177e4SLinus Torvalds } 23141da177e4SLinus Torvalds 23151da177e4SLinus Torvalds vc->rx_iov = NULL; 23161da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 23171da177e4SLinus Torvalds } 23181da177e4SLinus Torvalds 23191da177e4SLinus Torvalds } 23201da177e4SLinus Torvalds 23211da177e4SLinus Torvalds static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb) 23221da177e4SLinus Torvalds { 2323864a3ff6Schas williams - CONTRACTOR if (unlikely(NS_PRV_BUFTYPE(skb) == BUF_NONE)) { 2324098fde11Schas williams - CONTRACTOR printk("nicstar%d: What kind of rx buffer is this?\n", 2325098fde11Schas williams - CONTRACTOR card->index); 23261da177e4SLinus Torvalds dev_kfree_skb_any(skb); 23278728b834SDavid S. Miller } else 23288728b834SDavid S. Miller push_rxbufs(card, skb); 23291da177e4SLinus Torvalds } 23301da177e4SLinus Torvalds 23311da177e4SLinus Torvalds static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count) 23321da177e4SLinus Torvalds { 23338728b834SDavid S. Miller while (count-- > 0) 23348728b834SDavid S. Miller recycle_rx_buf(card, (struct sk_buff *)(iov++)->iov_base); 23351da177e4SLinus Torvalds } 23361da177e4SLinus Torvalds 23371da177e4SLinus Torvalds static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb) 23381da177e4SLinus Torvalds { 2339098fde11Schas williams - CONTRACTOR if (card->iovpool.count < card->iovnr.max) { 23401da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, iovb); 23411da177e4SLinus Torvalds card->iovpool.count++; 2342098fde11Schas williams - CONTRACTOR } else 23431da177e4SLinus Torvalds dev_kfree_skb_any(iovb); 23441da177e4SLinus Torvalds } 23451da177e4SLinus Torvalds 23461da177e4SLinus Torvalds static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb) 23471da177e4SLinus Torvalds { 23488728b834SDavid S. Miller skb_unlink(sb, &card->sbpool.queue); 2349098fde11Schas williams - CONTRACTOR if (card->sbfqc < card->sbnr.init) { 23501da177e4SLinus Torvalds struct sk_buff *new_sb; 2351098fde11Schas williams - CONTRACTOR if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) { 2352864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_sb) = BUF_SM; 23531da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, new_sb); 23541da177e4SLinus Torvalds skb_reserve(new_sb, NS_AAL0_HEADER); 23558728b834SDavid S. Miller push_rxbufs(card, new_sb); 23561da177e4SLinus Torvalds } 23571da177e4SLinus Torvalds } 23581da177e4SLinus Torvalds if (card->sbfqc < card->sbnr.init) 23591da177e4SLinus Torvalds { 23601da177e4SLinus Torvalds struct sk_buff *new_sb; 2361098fde11Schas williams - CONTRACTOR if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) { 2362864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_sb) = BUF_SM; 23631da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, new_sb); 23641da177e4SLinus Torvalds skb_reserve(new_sb, NS_AAL0_HEADER); 23658728b834SDavid S. Miller push_rxbufs(card, new_sb); 23661da177e4SLinus Torvalds } 23671da177e4SLinus Torvalds } 23681da177e4SLinus Torvalds } 23691da177e4SLinus Torvalds 23701da177e4SLinus Torvalds static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb) 23711da177e4SLinus Torvalds { 23728728b834SDavid S. Miller skb_unlink(lb, &card->lbpool.queue); 2373098fde11Schas williams - CONTRACTOR if (card->lbfqc < card->lbnr.init) { 23741da177e4SLinus Torvalds struct sk_buff *new_lb; 2375098fde11Schas williams - CONTRACTOR if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) { 2376864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_lb) = BUF_LG; 23771da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, new_lb); 23781da177e4SLinus Torvalds skb_reserve(new_lb, NS_SMBUFSIZE); 23798728b834SDavid S. Miller push_rxbufs(card, new_lb); 23801da177e4SLinus Torvalds } 23811da177e4SLinus Torvalds } 23821da177e4SLinus Torvalds if (card->lbfqc < card->lbnr.init) 23831da177e4SLinus Torvalds { 23841da177e4SLinus Torvalds struct sk_buff *new_lb; 2385098fde11Schas williams - CONTRACTOR if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) { 2386864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_lb) = BUF_LG; 23871da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, new_lb); 23881da177e4SLinus Torvalds skb_reserve(new_lb, NS_SMBUFSIZE); 23898728b834SDavid S. Miller push_rxbufs(card, new_lb); 23901da177e4SLinus Torvalds } 23911da177e4SLinus Torvalds } 23921da177e4SLinus Torvalds } 23931da177e4SLinus Torvalds 23941da177e4SLinus Torvalds static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page) 23951da177e4SLinus Torvalds { 23961da177e4SLinus Torvalds u32 stat; 23971da177e4SLinus Torvalds ns_dev *card; 23981da177e4SLinus Torvalds int left; 23991da177e4SLinus Torvalds 24001da177e4SLinus Torvalds left = (int)*pos; 24011da177e4SLinus Torvalds card = (ns_dev *) dev->dev_data; 24021da177e4SLinus Torvalds stat = readl(card->membase + STAT); 24031da177e4SLinus Torvalds if (!left--) 24041da177e4SLinus Torvalds return sprintf(page, "Pool count min init max \n"); 24051da177e4SLinus Torvalds if (!left--) 24061da177e4SLinus Torvalds return sprintf(page, "Small %5d %5d %5d %5d \n", 2407098fde11Schas williams - CONTRACTOR ns_stat_sfbqc_get(stat), card->sbnr.min, 2408098fde11Schas williams - CONTRACTOR card->sbnr.init, card->sbnr.max); 24091da177e4SLinus Torvalds if (!left--) 24101da177e4SLinus Torvalds return sprintf(page, "Large %5d %5d %5d %5d \n", 2411098fde11Schas williams - CONTRACTOR ns_stat_lfbqc_get(stat), card->lbnr.min, 2412098fde11Schas williams - CONTRACTOR card->lbnr.init, card->lbnr.max); 24131da177e4SLinus Torvalds if (!left--) 2414098fde11Schas williams - CONTRACTOR return sprintf(page, "Huge %5d %5d %5d %5d \n", 2415098fde11Schas williams - CONTRACTOR card->hbpool.count, card->hbnr.min, 2416098fde11Schas williams - CONTRACTOR card->hbnr.init, card->hbnr.max); 24171da177e4SLinus Torvalds if (!left--) 2418098fde11Schas williams - CONTRACTOR return sprintf(page, "Iovec %5d %5d %5d %5d \n", 2419098fde11Schas williams - CONTRACTOR card->iovpool.count, card->iovnr.min, 2420098fde11Schas williams - CONTRACTOR card->iovnr.init, card->iovnr.max); 2421098fde11Schas williams - CONTRACTOR if (!left--) { 24221da177e4SLinus Torvalds int retval; 2423098fde11Schas williams - CONTRACTOR retval = 2424098fde11Schas williams - CONTRACTOR sprintf(page, "Interrupt counter: %u \n", card->intcnt); 24251da177e4SLinus Torvalds card->intcnt = 0; 24261da177e4SLinus Torvalds return retval; 24271da177e4SLinus Torvalds } 24281da177e4SLinus Torvalds #if 0 24291da177e4SLinus Torvalds /* Dump 25.6 Mbps PHY registers */ 24301da177e4SLinus Torvalds /* Now there's a 25.6 Mbps PHY driver this code isn't needed. I left it 24311da177e4SLinus Torvalds here just in case it's needed for debugging. */ 2432098fde11Schas williams - CONTRACTOR if (card->max_pcr == ATM_25_PCR && !left--) { 24331da177e4SLinus Torvalds u32 phy_regs[4]; 24341da177e4SLinus Torvalds u32 i; 24351da177e4SLinus Torvalds 2436098fde11Schas williams - CONTRACTOR for (i = 0; i < 4; i++) { 24371da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 2438098fde11Schas williams - CONTRACTOR writel(NS_CMD_READ_UTILITY | 0x00000200 | i, 2439098fde11Schas williams - CONTRACTOR card->membase + CMD); 24401da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 24411da177e4SLinus Torvalds phy_regs[i] = readl(card->membase + DR0) & 0x000000FF; 24421da177e4SLinus Torvalds } 24431da177e4SLinus Torvalds 24441da177e4SLinus Torvalds return sprintf(page, "PHY regs: 0x%02X 0x%02X 0x%02X 0x%02X \n", 2445098fde11Schas williams - CONTRACTOR phy_regs[0], phy_regs[1], phy_regs[2], 2446098fde11Schas williams - CONTRACTOR phy_regs[3]); 24471da177e4SLinus Torvalds } 24481da177e4SLinus Torvalds #endif /* 0 - Dump 25.6 Mbps PHY registers */ 24491da177e4SLinus Torvalds #if 0 24501da177e4SLinus Torvalds /* Dump TST */ 2451098fde11Schas williams - CONTRACTOR if (left-- < NS_TST_NUM_ENTRIES) { 24521da177e4SLinus Torvalds if (card->tste2vc[left + 1] == NULL) 24531da177e4SLinus Torvalds return sprintf(page, "%5d - VBR/UBR \n", left + 1); 24541da177e4SLinus Torvalds else 24551da177e4SLinus Torvalds return sprintf(page, "%5d - %d %d \n", left + 1, 24561da177e4SLinus Torvalds card->tste2vc[left + 1]->tx_vcc->vpi, 24571da177e4SLinus Torvalds card->tste2vc[left + 1]->tx_vcc->vci); 24581da177e4SLinus Torvalds } 24591da177e4SLinus Torvalds #endif /* 0 */ 24601da177e4SLinus Torvalds return 0; 24611da177e4SLinus Torvalds } 24621da177e4SLinus Torvalds 24631da177e4SLinus Torvalds static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg) 24641da177e4SLinus Torvalds { 24651da177e4SLinus Torvalds ns_dev *card; 24661da177e4SLinus Torvalds pool_levels pl; 246769c30147SAlan Cox long btype; 24681da177e4SLinus Torvalds unsigned long flags; 24691da177e4SLinus Torvalds 24701da177e4SLinus Torvalds card = dev->dev_data; 2471098fde11Schas williams - CONTRACTOR switch (cmd) { 24721da177e4SLinus Torvalds case NS_GETPSTAT: 2473098fde11Schas williams - CONTRACTOR if (get_user 2474098fde11Schas williams - CONTRACTOR (pl.buftype, &((pool_levels __user *) arg)->buftype)) 24751da177e4SLinus Torvalds return -EFAULT; 2476098fde11Schas williams - CONTRACTOR switch (pl.buftype) { 24771da177e4SLinus Torvalds case NS_BUFTYPE_SMALL: 2478098fde11Schas williams - CONTRACTOR pl.count = 2479098fde11Schas williams - CONTRACTOR ns_stat_sfbqc_get(readl(card->membase + STAT)); 24801da177e4SLinus Torvalds pl.level.min = card->sbnr.min; 24811da177e4SLinus Torvalds pl.level.init = card->sbnr.init; 24821da177e4SLinus Torvalds pl.level.max = card->sbnr.max; 24831da177e4SLinus Torvalds break; 24841da177e4SLinus Torvalds 24851da177e4SLinus Torvalds case NS_BUFTYPE_LARGE: 2486098fde11Schas williams - CONTRACTOR pl.count = 2487098fde11Schas williams - CONTRACTOR ns_stat_lfbqc_get(readl(card->membase + STAT)); 24881da177e4SLinus Torvalds pl.level.min = card->lbnr.min; 24891da177e4SLinus Torvalds pl.level.init = card->lbnr.init; 24901da177e4SLinus Torvalds pl.level.max = card->lbnr.max; 24911da177e4SLinus Torvalds break; 24921da177e4SLinus Torvalds 24931da177e4SLinus Torvalds case NS_BUFTYPE_HUGE: 24941da177e4SLinus Torvalds pl.count = card->hbpool.count; 24951da177e4SLinus Torvalds pl.level.min = card->hbnr.min; 24961da177e4SLinus Torvalds pl.level.init = card->hbnr.init; 24971da177e4SLinus Torvalds pl.level.max = card->hbnr.max; 24981da177e4SLinus Torvalds break; 24991da177e4SLinus Torvalds 25001da177e4SLinus Torvalds case NS_BUFTYPE_IOVEC: 25011da177e4SLinus Torvalds pl.count = card->iovpool.count; 25021da177e4SLinus Torvalds pl.level.min = card->iovnr.min; 25031da177e4SLinus Torvalds pl.level.init = card->iovnr.init; 25041da177e4SLinus Torvalds pl.level.max = card->iovnr.max; 25051da177e4SLinus Torvalds break; 25061da177e4SLinus Torvalds 25071da177e4SLinus Torvalds default: 25081da177e4SLinus Torvalds return -ENOIOCTLCMD; 25091da177e4SLinus Torvalds 25101da177e4SLinus Torvalds } 25111da177e4SLinus Torvalds if (!copy_to_user((pool_levels __user *) arg, &pl, sizeof(pl))) 25121da177e4SLinus Torvalds return (sizeof(pl)); 25131da177e4SLinus Torvalds else 25141da177e4SLinus Torvalds return -EFAULT; 25151da177e4SLinus Torvalds 25161da177e4SLinus Torvalds case NS_SETBUFLEV: 25171da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 25181da177e4SLinus Torvalds return -EPERM; 25191da177e4SLinus Torvalds if (copy_from_user(&pl, (pool_levels __user *) arg, sizeof(pl))) 25201da177e4SLinus Torvalds return -EFAULT; 2521098fde11Schas williams - CONTRACTOR if (pl.level.min >= pl.level.init 2522098fde11Schas williams - CONTRACTOR || pl.level.init >= pl.level.max) 25231da177e4SLinus Torvalds return -EINVAL; 25241da177e4SLinus Torvalds if (pl.level.min == 0) 25251da177e4SLinus Torvalds return -EINVAL; 2526098fde11Schas williams - CONTRACTOR switch (pl.buftype) { 25271da177e4SLinus Torvalds case NS_BUFTYPE_SMALL: 25281da177e4SLinus Torvalds if (pl.level.max > TOP_SB) 25291da177e4SLinus Torvalds return -EINVAL; 25301da177e4SLinus Torvalds card->sbnr.min = pl.level.min; 25311da177e4SLinus Torvalds card->sbnr.init = pl.level.init; 25321da177e4SLinus Torvalds card->sbnr.max = pl.level.max; 25331da177e4SLinus Torvalds break; 25341da177e4SLinus Torvalds 25351da177e4SLinus Torvalds case NS_BUFTYPE_LARGE: 25361da177e4SLinus Torvalds if (pl.level.max > TOP_LB) 25371da177e4SLinus Torvalds return -EINVAL; 25381da177e4SLinus Torvalds card->lbnr.min = pl.level.min; 25391da177e4SLinus Torvalds card->lbnr.init = pl.level.init; 25401da177e4SLinus Torvalds card->lbnr.max = pl.level.max; 25411da177e4SLinus Torvalds break; 25421da177e4SLinus Torvalds 25431da177e4SLinus Torvalds case NS_BUFTYPE_HUGE: 25441da177e4SLinus Torvalds if (pl.level.max > TOP_HB) 25451da177e4SLinus Torvalds return -EINVAL; 25461da177e4SLinus Torvalds card->hbnr.min = pl.level.min; 25471da177e4SLinus Torvalds card->hbnr.init = pl.level.init; 25481da177e4SLinus Torvalds card->hbnr.max = pl.level.max; 25491da177e4SLinus Torvalds break; 25501da177e4SLinus Torvalds 25511da177e4SLinus Torvalds case NS_BUFTYPE_IOVEC: 25521da177e4SLinus Torvalds if (pl.level.max > TOP_IOVB) 25531da177e4SLinus Torvalds return -EINVAL; 25541da177e4SLinus Torvalds card->iovnr.min = pl.level.min; 25551da177e4SLinus Torvalds card->iovnr.init = pl.level.init; 25561da177e4SLinus Torvalds card->iovnr.max = pl.level.max; 25571da177e4SLinus Torvalds break; 25581da177e4SLinus Torvalds 25591da177e4SLinus Torvalds default: 25601da177e4SLinus Torvalds return -EINVAL; 25611da177e4SLinus Torvalds 25621da177e4SLinus Torvalds } 25631da177e4SLinus Torvalds return 0; 25641da177e4SLinus Torvalds 25651da177e4SLinus Torvalds case NS_ADJBUFLEV: 25661da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 25671da177e4SLinus Torvalds return -EPERM; 256869c30147SAlan Cox btype = (long)arg; /* a long is the same size as a pointer or bigger */ 2569098fde11Schas williams - CONTRACTOR switch (btype) { 25701da177e4SLinus Torvalds case NS_BUFTYPE_SMALL: 2571098fde11Schas williams - CONTRACTOR while (card->sbfqc < card->sbnr.init) { 25721da177e4SLinus Torvalds struct sk_buff *sb; 25731da177e4SLinus Torvalds 25741da177e4SLinus Torvalds sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); 25751da177e4SLinus Torvalds if (sb == NULL) 25761da177e4SLinus Torvalds return -ENOMEM; 2577864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(sb) = BUF_SM; 25781da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, sb); 25791da177e4SLinus Torvalds skb_reserve(sb, NS_AAL0_HEADER); 25808728b834SDavid S. Miller push_rxbufs(card, sb); 25811da177e4SLinus Torvalds } 25821da177e4SLinus Torvalds break; 25831da177e4SLinus Torvalds 25841da177e4SLinus Torvalds case NS_BUFTYPE_LARGE: 2585098fde11Schas williams - CONTRACTOR while (card->lbfqc < card->lbnr.init) { 25861da177e4SLinus Torvalds struct sk_buff *lb; 25871da177e4SLinus Torvalds 25881da177e4SLinus Torvalds lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); 25891da177e4SLinus Torvalds if (lb == NULL) 25901da177e4SLinus Torvalds return -ENOMEM; 2591864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(lb) = BUF_LG; 25921da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, lb); 25931da177e4SLinus Torvalds skb_reserve(lb, NS_SMBUFSIZE); 25948728b834SDavid S. Miller push_rxbufs(card, lb); 25951da177e4SLinus Torvalds } 25961da177e4SLinus Torvalds break; 25971da177e4SLinus Torvalds 25981da177e4SLinus Torvalds case NS_BUFTYPE_HUGE: 2599098fde11Schas williams - CONTRACTOR while (card->hbpool.count > card->hbnr.init) { 26001da177e4SLinus Torvalds struct sk_buff *hb; 26011da177e4SLinus Torvalds 260236ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 26031da177e4SLinus Torvalds hb = skb_dequeue(&card->hbpool.queue); 26041da177e4SLinus Torvalds card->hbpool.count--; 26051da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 26061da177e4SLinus Torvalds if (hb == NULL) 2607098fde11Schas williams - CONTRACTOR printk 2608098fde11Schas williams - CONTRACTOR ("nicstar%d: huge buffer count inconsistent.\n", 26091da177e4SLinus Torvalds card->index); 26101da177e4SLinus Torvalds else 26111da177e4SLinus Torvalds dev_kfree_skb_any(hb); 26121da177e4SLinus Torvalds 26131da177e4SLinus Torvalds } 2614098fde11Schas williams - CONTRACTOR while (card->hbpool.count < card->hbnr.init) { 26151da177e4SLinus Torvalds struct sk_buff *hb; 26161da177e4SLinus Torvalds 26171da177e4SLinus Torvalds hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); 26181da177e4SLinus Torvalds if (hb == NULL) 26191da177e4SLinus Torvalds return -ENOMEM; 2620864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(hb) = BUF_NONE; 262136ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 26221da177e4SLinus Torvalds skb_queue_tail(&card->hbpool.queue, hb); 26231da177e4SLinus Torvalds card->hbpool.count++; 26241da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 26251da177e4SLinus Torvalds } 26261da177e4SLinus Torvalds break; 26271da177e4SLinus Torvalds 26281da177e4SLinus Torvalds case NS_BUFTYPE_IOVEC: 2629098fde11Schas williams - CONTRACTOR while (card->iovpool.count > card->iovnr.init) { 26301da177e4SLinus Torvalds struct sk_buff *iovb; 26311da177e4SLinus Torvalds 263236ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 26331da177e4SLinus Torvalds iovb = skb_dequeue(&card->iovpool.queue); 26341da177e4SLinus Torvalds card->iovpool.count--; 26351da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 26361da177e4SLinus Torvalds if (iovb == NULL) 2637098fde11Schas williams - CONTRACTOR printk 2638098fde11Schas williams - CONTRACTOR ("nicstar%d: iovec buffer count inconsistent.\n", 26391da177e4SLinus Torvalds card->index); 26401da177e4SLinus Torvalds else 26411da177e4SLinus Torvalds dev_kfree_skb_any(iovb); 26421da177e4SLinus Torvalds 26431da177e4SLinus Torvalds } 2644098fde11Schas williams - CONTRACTOR while (card->iovpool.count < card->iovnr.init) { 26451da177e4SLinus Torvalds struct sk_buff *iovb; 26461da177e4SLinus Torvalds 26471da177e4SLinus Torvalds iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); 26481da177e4SLinus Torvalds if (iovb == NULL) 26491da177e4SLinus Torvalds return -ENOMEM; 2650864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE; 265136ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 26521da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, iovb); 26531da177e4SLinus Torvalds card->iovpool.count++; 26541da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 26551da177e4SLinus Torvalds } 26561da177e4SLinus Torvalds break; 26571da177e4SLinus Torvalds 26581da177e4SLinus Torvalds default: 26591da177e4SLinus Torvalds return -EINVAL; 26601da177e4SLinus Torvalds 26611da177e4SLinus Torvalds } 26621da177e4SLinus Torvalds return 0; 26631da177e4SLinus Torvalds 26641da177e4SLinus Torvalds default: 26651da177e4SLinus Torvalds if (dev->phy && dev->phy->ioctl) { 26661da177e4SLinus Torvalds return dev->phy->ioctl(dev, cmd, arg); 2667098fde11Schas williams - CONTRACTOR } else { 26681da177e4SLinus Torvalds printk("nicstar%d: %s == NULL \n", card->index, 26691da177e4SLinus Torvalds dev->phy ? "dev->phy->ioctl" : "dev->phy"); 26701da177e4SLinus Torvalds return -ENOIOCTLCMD; 26711da177e4SLinus Torvalds } 26721da177e4SLinus Torvalds } 26731da177e4SLinus Torvalds } 26741da177e4SLinus Torvalds 2675864a3ff6Schas williams - CONTRACTOR #ifdef EXTRA_DEBUG 26761da177e4SLinus Torvalds static void which_list(ns_dev * card, struct sk_buff *skb) 26771da177e4SLinus Torvalds { 2678864a3ff6Schas williams - CONTRACTOR printk("skb buf_type: 0x%08x\n", NS_PRV_BUFTYPE(skb)); 26791da177e4SLinus Torvalds } 2680864a3ff6Schas williams - CONTRACTOR #endif /* EXTRA_DEBUG */ 26811da177e4SLinus Torvalds 2682e99e88a9SKees Cook static void ns_poll(struct timer_list *unused) 26831da177e4SLinus Torvalds { 26841da177e4SLinus Torvalds int i; 26851da177e4SLinus Torvalds ns_dev *card; 26861da177e4SLinus Torvalds unsigned long flags; 26871da177e4SLinus Torvalds u32 stat_r, stat_w; 26881da177e4SLinus Torvalds 26891da177e4SLinus Torvalds PRINTK("nicstar: Entering ns_poll().\n"); 2690098fde11Schas williams - CONTRACTOR for (i = 0; i < num_cards; i++) { 26911da177e4SLinus Torvalds card = cards[i]; 26921da177e4SLinus Torvalds if (spin_is_locked(&card->int_lock)) { 26931da177e4SLinus Torvalds /* Probably it isn't worth spinning */ 26941da177e4SLinus Torvalds continue; 26951da177e4SLinus Torvalds } 269636ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 26971da177e4SLinus Torvalds 26981da177e4SLinus Torvalds stat_w = 0; 26991da177e4SLinus Torvalds stat_r = readl(card->membase + STAT); 27001da177e4SLinus Torvalds if (stat_r & NS_STAT_TSIF) 27011da177e4SLinus Torvalds stat_w |= NS_STAT_TSIF; 27021da177e4SLinus Torvalds if (stat_r & NS_STAT_EOPDU) 27031da177e4SLinus Torvalds stat_w |= NS_STAT_EOPDU; 27041da177e4SLinus Torvalds 27051da177e4SLinus Torvalds process_tsq(card); 27061da177e4SLinus Torvalds process_rsq(card); 27071da177e4SLinus Torvalds 27081da177e4SLinus Torvalds writel(stat_w, card->membase + STAT); 27091da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 27101da177e4SLinus Torvalds } 27111da177e4SLinus Torvalds mod_timer(&ns_timer, jiffies + NS_POLL_PERIOD); 27121da177e4SLinus Torvalds PRINTK("nicstar: Leaving ns_poll().\n"); 27131da177e4SLinus Torvalds } 27141da177e4SLinus Torvalds 27151da177e4SLinus Torvalds static void ns_phy_put(struct atm_dev *dev, unsigned char value, 27161da177e4SLinus Torvalds unsigned long addr) 27171da177e4SLinus Torvalds { 27181da177e4SLinus Torvalds ns_dev *card; 27191da177e4SLinus Torvalds unsigned long flags; 27201da177e4SLinus Torvalds 27211da177e4SLinus Torvalds card = dev->dev_data; 272236ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags); 27231da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 2724864a3ff6Schas williams - CONTRACTOR writel((u32) value, card->membase + DR0); 27251da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000200 | (addr & 0x000000FF), 27261da177e4SLinus Torvalds card->membase + CMD); 27271da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags); 27281da177e4SLinus Torvalds } 27291da177e4SLinus Torvalds 27301da177e4SLinus Torvalds static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr) 27311da177e4SLinus Torvalds { 27321da177e4SLinus Torvalds ns_dev *card; 27331da177e4SLinus Torvalds unsigned long flags; 2734864a3ff6Schas williams - CONTRACTOR u32 data; 27351da177e4SLinus Torvalds 27361da177e4SLinus Torvalds card = dev->dev_data; 273736ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags); 27381da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 27391da177e4SLinus Torvalds writel(NS_CMD_READ_UTILITY | 0x00000200 | (addr & 0x000000FF), 27401da177e4SLinus Torvalds card->membase + CMD); 27411da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 27421da177e4SLinus Torvalds data = readl(card->membase + DR0) & 0x000000FF; 27431da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags); 27441da177e4SLinus Torvalds return (unsigned char)data; 27451da177e4SLinus Torvalds } 27461da177e4SLinus Torvalds 27471da177e4SLinus Torvalds module_init(nicstar_init); 27481da177e4SLinus Torvalds module_exit(nicstar_cleanup); 2749