109c434b8SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2098fde11Schas williams - CONTRACTOR /* 31da177e4SLinus Torvalds * nicstar.c 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Device driver supporting CBR for IDT 77201/77211 "NICStAR" based cards. 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * IMPORTANT: The included file nicstarmac.c was NOT WRITTEN BY ME. 81da177e4SLinus Torvalds * It was taken from the frle-0.22 device driver. 91da177e4SLinus Torvalds * As the file doesn't have a copyright notice, in the file 101da177e4SLinus Torvalds * nicstarmac.copyright I put the copyright notice from the 111da177e4SLinus Torvalds * frle-0.22 device driver. 121da177e4SLinus Torvalds * Some code is based on the nicstar driver by M. Welsh. 131da177e4SLinus Torvalds * 141da177e4SLinus Torvalds * Author: Rui Prior (rprior@inescn.pt) 151da177e4SLinus Torvalds * PowerPC support by Jay Talbott (jay_talbott@mcg.mot.com) April 1999 161da177e4SLinus Torvalds * 171da177e4SLinus Torvalds * 181da177e4SLinus Torvalds * (C) INESC 1999 19098fde11Schas williams - CONTRACTOR */ 201da177e4SLinus Torvalds 21098fde11Schas williams - CONTRACTOR /* 22098fde11Schas williams - CONTRACTOR * IMPORTANT INFORMATION 231da177e4SLinus Torvalds * 241da177e4SLinus Torvalds * There are currently three types of spinlocks: 251da177e4SLinus Torvalds * 261da177e4SLinus Torvalds * 1 - Per card interrupt spinlock (to protect structures and such) 271da177e4SLinus Torvalds * 2 - Per SCQ scq spinlock 281da177e4SLinus Torvalds * 3 - Per card resource spinlock (to access registers, etc.) 291da177e4SLinus Torvalds * 301da177e4SLinus Torvalds * These must NEVER be grabbed in reverse order. 311da177e4SLinus Torvalds * 32098fde11Schas williams - CONTRACTOR */ 331da177e4SLinus Torvalds 34098fde11Schas williams - CONTRACTOR /* Header files */ 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds #include <linux/module.h> 371da177e4SLinus Torvalds #include <linux/kernel.h> 381da177e4SLinus Torvalds #include <linux/skbuff.h> 391da177e4SLinus Torvalds #include <linux/atmdev.h> 401da177e4SLinus Torvalds #include <linux/atm.h> 411da177e4SLinus Torvalds #include <linux/pci.h> 42864a3ff6Schas williams - CONTRACTOR #include <linux/dma-mapping.h> 431da177e4SLinus Torvalds #include <linux/types.h> 441da177e4SLinus Torvalds #include <linux/string.h> 451da177e4SLinus Torvalds #include <linux/delay.h> 461da177e4SLinus Torvalds #include <linux/init.h> 471da177e4SLinus Torvalds #include <linux/sched.h> 481da177e4SLinus Torvalds #include <linux/timer.h> 491da177e4SLinus Torvalds #include <linux/interrupt.h> 501da177e4SLinus Torvalds #include <linux/bitops.h> 515a0e3ad6STejun Heo #include <linux/slab.h> 52864a3ff6Schas williams - CONTRACTOR #include <linux/idr.h> 531da177e4SLinus Torvalds #include <asm/io.h> 547c0f6ba6SLinus Torvalds #include <linux/uaccess.h> 5560063497SArun Sharma #include <linux/atomic.h> 564c55a462Sdingtianhong #include <linux/etherdevice.h> 571da177e4SLinus Torvalds #include "nicstar.h" 581da177e4SLinus Torvalds #ifdef CONFIG_ATM_NICSTAR_USE_SUNI 591da177e4SLinus Torvalds #include "suni.h" 601da177e4SLinus Torvalds #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ 611da177e4SLinus Torvalds #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 621da177e4SLinus Torvalds #include "idt77105.h" 631da177e4SLinus Torvalds #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ 641da177e4SLinus Torvalds 65098fde11Schas williams - CONTRACTOR /* Additional code */ 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds #include "nicstarmac.c" 681da177e4SLinus Torvalds 69098fde11Schas williams - CONTRACTOR /* Configurable parameters */ 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds #undef PHY_LOOPBACK 721da177e4SLinus Torvalds #undef TX_DEBUG 731da177e4SLinus Torvalds #undef RX_DEBUG 741da177e4SLinus Torvalds #undef GENERAL_DEBUG 751da177e4SLinus Torvalds #undef EXTRA_DEBUG 761da177e4SLinus Torvalds 77098fde11Schas williams - CONTRACTOR /* Do not touch these */ 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds #ifdef TX_DEBUG 801da177e4SLinus Torvalds #define TXPRINTK(args...) printk(args) 811da177e4SLinus Torvalds #else 821da177e4SLinus Torvalds #define TXPRINTK(args...) 831da177e4SLinus Torvalds #endif /* TX_DEBUG */ 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds #ifdef RX_DEBUG 861da177e4SLinus Torvalds #define RXPRINTK(args...) printk(args) 871da177e4SLinus Torvalds #else 881da177e4SLinus Torvalds #define RXPRINTK(args...) 891da177e4SLinus Torvalds #endif /* RX_DEBUG */ 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds #ifdef GENERAL_DEBUG 921da177e4SLinus Torvalds #define PRINTK(args...) printk(args) 931da177e4SLinus Torvalds #else 948a171c5cSRandy Dunlap #define PRINTK(args...) do {} while (0) 951da177e4SLinus Torvalds #endif /* GENERAL_DEBUG */ 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds #ifdef EXTRA_DEBUG 981da177e4SLinus Torvalds #define XPRINTK(args...) printk(args) 991da177e4SLinus Torvalds #else 1001da177e4SLinus Torvalds #define XPRINTK(args...) 1011da177e4SLinus Torvalds #endif /* EXTRA_DEBUG */ 1021da177e4SLinus Torvalds 103098fde11Schas williams - CONTRACTOR /* Macros */ 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds #define CMD_BUSY(card) (readl((card)->membase + STAT) & NS_STAT_CMDBZ) 1061da177e4SLinus Torvalds 1071da177e4SLinus Torvalds #define NS_DELAY mdelay(1) 1081da177e4SLinus Torvalds 109864a3ff6Schas williams - CONTRACTOR #define PTR_DIFF(a, b) ((u32)((unsigned long)(a) - (unsigned long)(b))) 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds #ifndef ATM_SKB 1121da177e4SLinus Torvalds #define ATM_SKB(s) (&(s)->atm) 1131da177e4SLinus Torvalds #endif 1141da177e4SLinus Torvalds 115864a3ff6Schas williams - CONTRACTOR #define scq_virt_to_bus(scq, p) \ 116864a3ff6Schas williams - CONTRACTOR (scq->dma + ((unsigned long)(p) - (unsigned long)(scq)->org)) 117864a3ff6Schas williams - CONTRACTOR 118098fde11Schas williams - CONTRACTOR /* Function declarations */ 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds static u32 ns_read_sram(ns_dev * card, u32 sram_address); 121098fde11Schas williams - CONTRACTOR static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value, 122098fde11Schas williams - CONTRACTOR int count); 1236c44512dSGreg Kroah-Hartman static int ns_init_card(int i, struct pci_dev *pcidev); 1246c44512dSGreg Kroah-Hartman static void ns_init_card_error(ns_dev * card, int error); 125864a3ff6Schas williams - CONTRACTOR static scq_info *get_scq(ns_dev *card, int size, u32 scd); 126864a3ff6Schas williams - CONTRACTOR static void free_scq(ns_dev *card, scq_info * scq, struct atm_vcc *vcc); 1278728b834SDavid S. Miller static void push_rxbufs(ns_dev *, struct sk_buff *); 1287d12e780SDavid Howells static irqreturn_t ns_irq_handler(int irq, void *dev_id); 1291da177e4SLinus Torvalds static int ns_open(struct atm_vcc *vcc); 1301da177e4SLinus Torvalds static void ns_close(struct atm_vcc *vcc); 1311da177e4SLinus Torvalds static void fill_tst(ns_dev * card, int n, vc_map * vc); 1321da177e4SLinus Torvalds static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb); 1331da177e4SLinus Torvalds static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd, 1341da177e4SLinus Torvalds struct sk_buff *skb); 1351da177e4SLinus Torvalds static void process_tsq(ns_dev * card); 1361da177e4SLinus Torvalds static void drain_scq(ns_dev * card, scq_info * scq, int pos); 1371da177e4SLinus Torvalds static void process_rsq(ns_dev * card); 1381da177e4SLinus Torvalds static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe); 1391da177e4SLinus Torvalds static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb); 1401da177e4SLinus Torvalds static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count); 1411da177e4SLinus Torvalds static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb); 1421da177e4SLinus Torvalds static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb); 1431da177e4SLinus Torvalds static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb); 1441da177e4SLinus Torvalds static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page); 1451da177e4SLinus Torvalds static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg); 146864a3ff6Schas williams - CONTRACTOR #ifdef EXTRA_DEBUG 1471da177e4SLinus Torvalds static void which_list(ns_dev * card, struct sk_buff *skb); 148864a3ff6Schas williams - CONTRACTOR #endif 149e99e88a9SKees Cook static void ns_poll(struct timer_list *unused); 1501da177e4SLinus Torvalds static void ns_phy_put(struct atm_dev *dev, unsigned char value, 1511da177e4SLinus Torvalds unsigned long addr); 1521da177e4SLinus Torvalds static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr); 1531da177e4SLinus Torvalds 154098fde11Schas williams - CONTRACTOR /* Global variables */ 1551da177e4SLinus Torvalds 1561da177e4SLinus Torvalds static struct ns_dev *cards[NS_MAX_CARDS]; 1571da177e4SLinus Torvalds static unsigned num_cards; 15846c4b7a5SBhumika Goyal static const struct atmdev_ops atm_ops = { 1591da177e4SLinus Torvalds .open = ns_open, 1601da177e4SLinus Torvalds .close = ns_close, 1611da177e4SLinus Torvalds .ioctl = ns_ioctl, 1621da177e4SLinus Torvalds .send = ns_send, 1631da177e4SLinus Torvalds .phy_put = ns_phy_put, 1641da177e4SLinus Torvalds .phy_get = ns_phy_get, 1651da177e4SLinus Torvalds .proc_read = ns_proc_read, 1661da177e4SLinus Torvalds .owner = THIS_MODULE, 1671da177e4SLinus Torvalds }; 168098fde11Schas williams - CONTRACTOR 1691da177e4SLinus Torvalds static struct timer_list ns_timer; 1701da177e4SLinus Torvalds static char *mac[NS_MAX_CARDS]; 1711da177e4SLinus Torvalds module_param_array(mac, charp, NULL, 0); 1721da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 1731da177e4SLinus Torvalds 174098fde11Schas williams - CONTRACTOR /* Functions */ 1751da177e4SLinus Torvalds 1766c44512dSGreg Kroah-Hartman static int nicstar_init_one(struct pci_dev *pcidev, 1771da177e4SLinus Torvalds const struct pci_device_id *ent) 1781da177e4SLinus Torvalds { 1791da177e4SLinus Torvalds static int index = -1; 1801da177e4SLinus Torvalds unsigned int error; 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds index++; 1831da177e4SLinus Torvalds cards[index] = NULL; 1841da177e4SLinus Torvalds 1851da177e4SLinus Torvalds error = ns_init_card(index, pcidev); 1861da177e4SLinus Torvalds if (error) { 1871da177e4SLinus Torvalds cards[index--] = NULL; /* don't increment index */ 1881da177e4SLinus Torvalds goto err_out; 1891da177e4SLinus Torvalds } 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds return 0; 1921da177e4SLinus Torvalds err_out: 1931da177e4SLinus Torvalds return -ENODEV; 1941da177e4SLinus Torvalds } 1951da177e4SLinus Torvalds 1966c44512dSGreg Kroah-Hartman static void nicstar_remove_one(struct pci_dev *pcidev) 1971da177e4SLinus Torvalds { 1981da177e4SLinus Torvalds int i, j; 1991da177e4SLinus Torvalds ns_dev *card = pci_get_drvdata(pcidev); 2001da177e4SLinus Torvalds struct sk_buff *hb; 2011da177e4SLinus Torvalds struct sk_buff *iovb; 2021da177e4SLinus Torvalds struct sk_buff *lb; 2031da177e4SLinus Torvalds struct sk_buff *sb; 2041da177e4SLinus Torvalds 2051da177e4SLinus Torvalds i = card->index; 2061da177e4SLinus Torvalds 2071da177e4SLinus Torvalds if (cards[i] == NULL) 2081da177e4SLinus Torvalds return; 2091da177e4SLinus Torvalds 2101da177e4SLinus Torvalds if (card->atmdev->phy && card->atmdev->phy->stop) 2111da177e4SLinus Torvalds card->atmdev->phy->stop(card->atmdev); 2121da177e4SLinus Torvalds 2131da177e4SLinus Torvalds /* Stop everything */ 2141da177e4SLinus Torvalds writel(0x00000000, card->membase + CFG); 2151da177e4SLinus Torvalds 2161da177e4SLinus Torvalds /* De-register device */ 2171da177e4SLinus Torvalds atm_dev_deregister(card->atmdev); 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds /* Disable PCI device */ 2201da177e4SLinus Torvalds pci_disable_device(pcidev); 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds /* Free up resources */ 2231da177e4SLinus Torvalds j = 0; 2241da177e4SLinus Torvalds PRINTK("nicstar%d: freeing %d huge buffers.\n", i, card->hbpool.count); 225098fde11Schas williams - CONTRACTOR while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) { 2261da177e4SLinus Torvalds dev_kfree_skb_any(hb); 2271da177e4SLinus Torvalds j++; 2281da177e4SLinus Torvalds } 2291da177e4SLinus Torvalds PRINTK("nicstar%d: %d huge buffers freed.\n", i, j); 2301da177e4SLinus Torvalds j = 0; 231098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: freeing %d iovec buffers.\n", i, 232098fde11Schas williams - CONTRACTOR card->iovpool.count); 233098fde11Schas williams - CONTRACTOR while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) { 2341da177e4SLinus Torvalds dev_kfree_skb_any(iovb); 2351da177e4SLinus Torvalds j++; 2361da177e4SLinus Torvalds } 2371da177e4SLinus Torvalds PRINTK("nicstar%d: %d iovec buffers freed.\n", i, j); 2381da177e4SLinus Torvalds while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL) 2391da177e4SLinus Torvalds dev_kfree_skb_any(lb); 2401da177e4SLinus Torvalds while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL) 2411da177e4SLinus Torvalds dev_kfree_skb_any(sb); 242864a3ff6Schas williams - CONTRACTOR free_scq(card, card->scq0, NULL); 243098fde11Schas williams - CONTRACTOR for (j = 0; j < NS_FRSCD_NUM; j++) { 2441da177e4SLinus Torvalds if (card->scd2vc[j] != NULL) 245864a3ff6Schas williams - CONTRACTOR free_scq(card, card->scd2vc[j]->scq, card->scd2vc[j]->tx_vcc); 2461da177e4SLinus Torvalds } 247864a3ff6Schas williams - CONTRACTOR idr_destroy(&card->idr); 248ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&card->pcidev->dev, NS_RSQSIZE + NS_RSQ_ALIGNMENT, 249864a3ff6Schas williams - CONTRACTOR card->rsq.org, card->rsq.dma); 250ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&card->pcidev->dev, NS_TSQSIZE + NS_TSQ_ALIGNMENT, 251864a3ff6Schas williams - CONTRACTOR card->tsq.org, card->tsq.dma); 2521da177e4SLinus Torvalds free_irq(card->pcidev->irq, card); 2531da177e4SLinus Torvalds iounmap(card->membase); 2541da177e4SLinus Torvalds kfree(card); 2551da177e4SLinus Torvalds } 2561da177e4SLinus Torvalds 2572f3e2604SArvind Yadav static const struct pci_device_id nicstar_pci_tbl[] = { 2586df7b80cSPeter Huewe { PCI_VDEVICE(IDT, PCI_DEVICE_ID_IDT_IDT77201), 0 }, 2591da177e4SLinus Torvalds {0,} /* terminate list */ 2601da177e4SLinus Torvalds }; 261098fde11Schas williams - CONTRACTOR 2621da177e4SLinus Torvalds MODULE_DEVICE_TABLE(pci, nicstar_pci_tbl); 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds static struct pci_driver nicstar_driver = { 2651da177e4SLinus Torvalds .name = "nicstar", 2661da177e4SLinus Torvalds .id_table = nicstar_pci_tbl, 2671da177e4SLinus Torvalds .probe = nicstar_init_one, 2686c44512dSGreg Kroah-Hartman .remove = nicstar_remove_one, 2691da177e4SLinus Torvalds }; 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds static int __init nicstar_init(void) 2721da177e4SLinus Torvalds { 2731da177e4SLinus Torvalds unsigned error = 0; /* Initialized to remove compile warning */ 2741da177e4SLinus Torvalds 2751da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_init() called.\n"); 2761da177e4SLinus Torvalds 2771da177e4SLinus Torvalds error = pci_register_driver(&nicstar_driver); 2781da177e4SLinus Torvalds 2791da177e4SLinus Torvalds TXPRINTK("nicstar: TX debug enabled.\n"); 2801da177e4SLinus Torvalds RXPRINTK("nicstar: RX debug enabled.\n"); 2811da177e4SLinus Torvalds PRINTK("nicstar: General debug enabled.\n"); 2821da177e4SLinus Torvalds #ifdef PHY_LOOPBACK 2831da177e4SLinus Torvalds printk("nicstar: using PHY loopback.\n"); 2841da177e4SLinus Torvalds #endif /* PHY_LOOPBACK */ 2851da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_init() returned.\n"); 2861da177e4SLinus Torvalds 2871da177e4SLinus Torvalds if (!error) { 288e99e88a9SKees Cook timer_setup(&ns_timer, ns_poll, 0); 2891da177e4SLinus Torvalds ns_timer.expires = jiffies + NS_POLL_PERIOD; 2901da177e4SLinus Torvalds add_timer(&ns_timer); 2911da177e4SLinus Torvalds } 2921da177e4SLinus Torvalds 2931da177e4SLinus Torvalds return error; 2941da177e4SLinus Torvalds } 2951da177e4SLinus Torvalds 2961da177e4SLinus Torvalds static void __exit nicstar_cleanup(void) 2971da177e4SLinus Torvalds { 2981da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_cleanup() called.\n"); 2991da177e4SLinus Torvalds 3001da177e4SLinus Torvalds del_timer(&ns_timer); 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds pci_unregister_driver(&nicstar_driver); 3031da177e4SLinus Torvalds 3041da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_cleanup() returned.\n"); 3051da177e4SLinus Torvalds } 3061da177e4SLinus Torvalds 3071da177e4SLinus Torvalds static u32 ns_read_sram(ns_dev * card, u32 sram_address) 3081da177e4SLinus Torvalds { 3091da177e4SLinus Torvalds unsigned long flags; 3101da177e4SLinus Torvalds u32 data; 3111da177e4SLinus Torvalds sram_address <<= 2; 3121da177e4SLinus Torvalds sram_address &= 0x0007FFFC; /* address must be dword aligned */ 3131da177e4SLinus Torvalds sram_address |= 0x50000000; /* SRAM read command */ 31436ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags); 3151da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 3161da177e4SLinus Torvalds writel(sram_address, card->membase + CMD); 3171da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 3181da177e4SLinus Torvalds data = readl(card->membase + DR0); 3191da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags); 3201da177e4SLinus Torvalds return data; 3211da177e4SLinus Torvalds } 3221da177e4SLinus Torvalds 323098fde11Schas williams - CONTRACTOR static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value, 324098fde11Schas williams - CONTRACTOR int count) 3251da177e4SLinus Torvalds { 3261da177e4SLinus Torvalds unsigned long flags; 3271da177e4SLinus Torvalds int i, c; 3281da177e4SLinus Torvalds count--; /* count range now is 0..3 instead of 1..4 */ 3291da177e4SLinus Torvalds c = count; 3301da177e4SLinus Torvalds c <<= 2; /* to use increments of 4 */ 33136ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags); 3321da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 3331da177e4SLinus Torvalds for (i = 0; i <= c; i += 4) 3341da177e4SLinus Torvalds writel(*(value++), card->membase + i); 3351da177e4SLinus Torvalds /* Note: DR# registers are the first 4 dwords in nicstar's memspace, 3361da177e4SLinus Torvalds so card->membase + DR0 == card->membase */ 3371da177e4SLinus Torvalds sram_address <<= 2; 3381da177e4SLinus Torvalds sram_address &= 0x0007FFFC; 3391da177e4SLinus Torvalds sram_address |= (0x40000000 | count); 3401da177e4SLinus Torvalds writel(sram_address, card->membase + CMD); 3411da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags); 3421da177e4SLinus Torvalds } 3431da177e4SLinus Torvalds 3446c44512dSGreg Kroah-Hartman static int ns_init_card(int i, struct pci_dev *pcidev) 3451da177e4SLinus Torvalds { 3461da177e4SLinus Torvalds int j; 3471da177e4SLinus Torvalds struct ns_dev *card = NULL; 3481da177e4SLinus Torvalds unsigned char pci_latency; 3491da177e4SLinus Torvalds unsigned error; 3501da177e4SLinus Torvalds u32 data; 3511da177e4SLinus Torvalds u32 u32d[4]; 3521da177e4SLinus Torvalds u32 ns_cfg_rctsize; 3531da177e4SLinus Torvalds int bcount; 3541da177e4SLinus Torvalds unsigned long membase; 3551da177e4SLinus Torvalds 3561da177e4SLinus Torvalds error = 0; 3571da177e4SLinus Torvalds 358098fde11Schas williams - CONTRACTOR if (pci_enable_device(pcidev)) { 3591da177e4SLinus Torvalds printk("nicstar%d: can't enable PCI device\n", i); 3601da177e4SLinus Torvalds error = 2; 3611da177e4SLinus Torvalds ns_init_card_error(card, error); 3621da177e4SLinus Torvalds return error; 3631da177e4SLinus Torvalds } 364ede58ef2Schas williams - CONTRACTOR if (dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(32)) != 0) { 365864a3ff6Schas williams - CONTRACTOR printk(KERN_WARNING 366864a3ff6Schas williams - CONTRACTOR "nicstar%d: No suitable DMA available.\n", i); 367864a3ff6Schas williams - CONTRACTOR error = 2; 368864a3ff6Schas williams - CONTRACTOR ns_init_card_error(card, error); 369864a3ff6Schas williams - CONTRACTOR return error; 370864a3ff6Schas williams - CONTRACTOR } 3711da177e4SLinus Torvalds 372304f0a4eSMarkus Elfring card = kmalloc(sizeof(*card), GFP_KERNEL); 373304f0a4eSMarkus Elfring if (!card) { 374098fde11Schas williams - CONTRACTOR printk 375098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate memory for device structure.\n", 376098fde11Schas williams - CONTRACTOR i); 3771da177e4SLinus Torvalds error = 2; 3781da177e4SLinus Torvalds ns_init_card_error(card, error); 3791da177e4SLinus Torvalds return error; 3801da177e4SLinus Torvalds } 3811da177e4SLinus Torvalds cards[i] = card; 3821da177e4SLinus Torvalds spin_lock_init(&card->int_lock); 3831da177e4SLinus Torvalds spin_lock_init(&card->res_lock); 3841da177e4SLinus Torvalds 3851da177e4SLinus Torvalds pci_set_drvdata(pcidev, card); 3861da177e4SLinus Torvalds 3871da177e4SLinus Torvalds card->index = i; 3881da177e4SLinus Torvalds card->atmdev = NULL; 3891da177e4SLinus Torvalds card->pcidev = pcidev; 3901da177e4SLinus Torvalds membase = pci_resource_start(pcidev, 1); 3911da177e4SLinus Torvalds card->membase = ioremap(membase, NS_IOREMAP_SIZE); 392098fde11Schas williams - CONTRACTOR if (!card->membase) { 3931da177e4SLinus Torvalds printk("nicstar%d: can't ioremap() membase.\n", i); 3941da177e4SLinus Torvalds error = 3; 3951da177e4SLinus Torvalds ns_init_card_error(card, error); 3961da177e4SLinus Torvalds return error; 3971da177e4SLinus Torvalds } 398864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: membase at 0x%p.\n", i, card->membase); 3991da177e4SLinus Torvalds 4001da177e4SLinus Torvalds pci_set_master(pcidev); 4011da177e4SLinus Torvalds 402098fde11Schas williams - CONTRACTOR if (pci_read_config_byte(pcidev, PCI_LATENCY_TIMER, &pci_latency) != 0) { 4031da177e4SLinus Torvalds printk("nicstar%d: can't read PCI latency timer.\n", i); 4041da177e4SLinus Torvalds error = 6; 4051da177e4SLinus Torvalds ns_init_card_error(card, error); 4061da177e4SLinus Torvalds return error; 4071da177e4SLinus Torvalds } 4081da177e4SLinus Torvalds #ifdef NS_PCI_LATENCY 409098fde11Schas williams - CONTRACTOR if (pci_latency < NS_PCI_LATENCY) { 410098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: setting PCI latency timer to %d.\n", i, 411098fde11Schas williams - CONTRACTOR NS_PCI_LATENCY); 412098fde11Schas williams - CONTRACTOR for (j = 1; j < 4; j++) { 413098fde11Schas williams - CONTRACTOR if (pci_write_config_byte 414098fde11Schas williams - CONTRACTOR (pcidev, PCI_LATENCY_TIMER, NS_PCI_LATENCY) != 0) 4151da177e4SLinus Torvalds break; 4161da177e4SLinus Torvalds } 417098fde11Schas williams - CONTRACTOR if (j == 4) { 418098fde11Schas williams - CONTRACTOR printk 419098fde11Schas williams - CONTRACTOR ("nicstar%d: can't set PCI latency timer to %d.\n", 420098fde11Schas williams - CONTRACTOR i, NS_PCI_LATENCY); 4211da177e4SLinus Torvalds error = 7; 4221da177e4SLinus Torvalds ns_init_card_error(card, error); 4231da177e4SLinus Torvalds return error; 4241da177e4SLinus Torvalds } 4251da177e4SLinus Torvalds } 4261da177e4SLinus Torvalds #endif /* NS_PCI_LATENCY */ 4271da177e4SLinus Torvalds 4281da177e4SLinus Torvalds /* Clear timer overflow */ 4291da177e4SLinus Torvalds data = readl(card->membase + STAT); 4301da177e4SLinus Torvalds if (data & NS_STAT_TMROF) 4311da177e4SLinus Torvalds writel(NS_STAT_TMROF, card->membase + STAT); 4321da177e4SLinus Torvalds 4331da177e4SLinus Torvalds /* Software reset */ 4341da177e4SLinus Torvalds writel(NS_CFG_SWRST, card->membase + CFG); 4351da177e4SLinus Torvalds NS_DELAY; 4361da177e4SLinus Torvalds writel(0x00000000, card->membase + CFG); 4371da177e4SLinus Torvalds 4381da177e4SLinus Torvalds /* PHY reset */ 4391da177e4SLinus Torvalds writel(0x00000008, card->membase + GP); 4401da177e4SLinus Torvalds NS_DELAY; 4411da177e4SLinus Torvalds writel(0x00000001, card->membase + GP); 4421da177e4SLinus Torvalds NS_DELAY; 4431da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4441da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000100, card->membase + CMD); /* Sync UTOPIA with SAR clock */ 4451da177e4SLinus Torvalds NS_DELAY; 4461da177e4SLinus Torvalds 4471da177e4SLinus Torvalds /* Detect PHY type */ 4481da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4491da177e4SLinus Torvalds writel(NS_CMD_READ_UTILITY | 0x00000200, card->membase + CMD); 4501da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4511da177e4SLinus Torvalds data = readl(card->membase + DR0); 4521da177e4SLinus Torvalds switch (data) { 4531da177e4SLinus Torvalds case 0x00000009: 4541da177e4SLinus Torvalds printk("nicstar%d: PHY seems to be 25 Mbps.\n", i); 4551da177e4SLinus Torvalds card->max_pcr = ATM_25_PCR; 4561da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4571da177e4SLinus Torvalds writel(0x00000008, card->membase + DR0); 4581da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000200, card->membase + CMD); 4591da177e4SLinus Torvalds /* Clear an eventual pending interrupt */ 4601da177e4SLinus Torvalds writel(NS_STAT_SFBQF, card->membase + STAT); 4611da177e4SLinus Torvalds #ifdef PHY_LOOPBACK 4621da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4631da177e4SLinus Torvalds writel(0x00000022, card->membase + DR0); 4641da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000202, card->membase + CMD); 4651da177e4SLinus Torvalds #endif /* PHY_LOOPBACK */ 4661da177e4SLinus Torvalds break; 4671da177e4SLinus Torvalds case 0x00000030: 4681da177e4SLinus Torvalds case 0x00000031: 4691da177e4SLinus Torvalds printk("nicstar%d: PHY seems to be 155 Mbps.\n", i); 4701da177e4SLinus Torvalds card->max_pcr = ATM_OC3_PCR; 4711da177e4SLinus Torvalds #ifdef PHY_LOOPBACK 4721da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 4731da177e4SLinus Torvalds writel(0x00000002, card->membase + DR0); 4741da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000205, card->membase + CMD); 4751da177e4SLinus Torvalds #endif /* PHY_LOOPBACK */ 4761da177e4SLinus Torvalds break; 4771da177e4SLinus Torvalds default: 4781da177e4SLinus Torvalds printk("nicstar%d: unknown PHY type (0x%08X).\n", i, data); 4791da177e4SLinus Torvalds error = 8; 4801da177e4SLinus Torvalds ns_init_card_error(card, error); 4811da177e4SLinus Torvalds return error; 4821da177e4SLinus Torvalds } 4831da177e4SLinus Torvalds writel(0x00000000, card->membase + GP); 4841da177e4SLinus Torvalds 4851da177e4SLinus Torvalds /* Determine SRAM size */ 4861da177e4SLinus Torvalds data = 0x76543210; 4871da177e4SLinus Torvalds ns_write_sram(card, 0x1C003, &data, 1); 4881da177e4SLinus Torvalds data = 0x89ABCDEF; 4891da177e4SLinus Torvalds ns_write_sram(card, 0x14003, &data, 1); 4901da177e4SLinus Torvalds if (ns_read_sram(card, 0x14003) == 0x89ABCDEF && 4911da177e4SLinus Torvalds ns_read_sram(card, 0x1C003) == 0x76543210) 4921da177e4SLinus Torvalds card->sram_size = 128; 4931da177e4SLinus Torvalds else 4941da177e4SLinus Torvalds card->sram_size = 32; 4951da177e4SLinus Torvalds PRINTK("nicstar%d: %dK x 32bit SRAM size.\n", i, card->sram_size); 4961da177e4SLinus Torvalds 4971da177e4SLinus Torvalds card->rct_size = NS_MAX_RCTSIZE; 4981da177e4SLinus Torvalds 4991da177e4SLinus Torvalds #if (NS_MAX_RCTSIZE == 4096) 5001da177e4SLinus Torvalds if (card->sram_size == 128) 501098fde11Schas williams - CONTRACTOR printk 502098fde11Schas williams - CONTRACTOR ("nicstar%d: limiting maximum VCI. See NS_MAX_RCTSIZE in nicstar.h\n", 503098fde11Schas williams - CONTRACTOR i); 5041da177e4SLinus Torvalds #elif (NS_MAX_RCTSIZE == 16384) 505098fde11Schas williams - CONTRACTOR if (card->sram_size == 32) { 506098fde11Schas williams - CONTRACTOR printk 507098fde11Schas williams - CONTRACTOR ("nicstar%d: wasting memory. See NS_MAX_RCTSIZE in nicstar.h\n", 508098fde11Schas williams - CONTRACTOR i); 5091da177e4SLinus Torvalds card->rct_size = 4096; 5101da177e4SLinus Torvalds } 5111da177e4SLinus Torvalds #else 5121da177e4SLinus Torvalds #error NS_MAX_RCTSIZE must be either 4096 or 16384 in nicstar.c 5131da177e4SLinus Torvalds #endif 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds card->vpibits = NS_VPIBITS; 5161da177e4SLinus Torvalds if (card->rct_size == 4096) 5171da177e4SLinus Torvalds card->vcibits = 12 - NS_VPIBITS; 5181da177e4SLinus Torvalds else /* card->rct_size == 16384 */ 5191da177e4SLinus Torvalds card->vcibits = 14 - NS_VPIBITS; 5201da177e4SLinus Torvalds 5211da177e4SLinus Torvalds /* Initialize the nicstar eeprom/eprom stuff, for the MAC addr */ 5221da177e4SLinus Torvalds if (mac[i] == NULL) 5231da177e4SLinus Torvalds nicstar_init_eprom(card->membase); 5241da177e4SLinus Torvalds 5251da177e4SLinus Torvalds /* Set the VPI/VCI MSb mask to zero so we can receive OAM cells */ 5261da177e4SLinus Torvalds writel(0x00000000, card->membase + VPM); 5271da177e4SLinus Torvalds 5281da177e4SLinus Torvalds /* Initialize TSQ */ 529ede58ef2Schas williams - CONTRACTOR card->tsq.org = dma_alloc_coherent(&card->pcidev->dev, 530864a3ff6Schas williams - CONTRACTOR NS_TSQSIZE + NS_TSQ_ALIGNMENT, 531ede58ef2Schas williams - CONTRACTOR &card->tsq.dma, GFP_KERNEL); 532098fde11Schas williams - CONTRACTOR if (card->tsq.org == NULL) { 5331da177e4SLinus Torvalds printk("nicstar%d: can't allocate TSQ.\n", i); 5341da177e4SLinus Torvalds error = 10; 5351da177e4SLinus Torvalds ns_init_card_error(card, error); 5361da177e4SLinus Torvalds return error; 5371da177e4SLinus Torvalds } 538864a3ff6Schas williams - CONTRACTOR card->tsq.base = PTR_ALIGN(card->tsq.org, NS_TSQ_ALIGNMENT); 5391da177e4SLinus Torvalds card->tsq.next = card->tsq.base; 5401da177e4SLinus Torvalds card->tsq.last = card->tsq.base + (NS_TSQ_NUM_ENTRIES - 1); 5411da177e4SLinus Torvalds for (j = 0; j < NS_TSQ_NUM_ENTRIES; j++) 5421da177e4SLinus Torvalds ns_tsi_init(card->tsq.base + j); 5431da177e4SLinus Torvalds writel(0x00000000, card->membase + TSQH); 544864a3ff6Schas williams - CONTRACTOR writel(ALIGN(card->tsq.dma, NS_TSQ_ALIGNMENT), card->membase + TSQB); 545864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: TSQ base at 0x%p.\n", i, card->tsq.base); 5461da177e4SLinus Torvalds 5471da177e4SLinus Torvalds /* Initialize RSQ */ 548ede58ef2Schas williams - CONTRACTOR card->rsq.org = dma_alloc_coherent(&card->pcidev->dev, 549864a3ff6Schas williams - CONTRACTOR NS_RSQSIZE + NS_RSQ_ALIGNMENT, 550ede58ef2Schas williams - CONTRACTOR &card->rsq.dma, GFP_KERNEL); 551098fde11Schas williams - CONTRACTOR if (card->rsq.org == NULL) { 5521da177e4SLinus Torvalds printk("nicstar%d: can't allocate RSQ.\n", i); 5531da177e4SLinus Torvalds error = 11; 5541da177e4SLinus Torvalds ns_init_card_error(card, error); 5551da177e4SLinus Torvalds return error; 5561da177e4SLinus Torvalds } 557864a3ff6Schas williams - CONTRACTOR card->rsq.base = PTR_ALIGN(card->rsq.org, NS_RSQ_ALIGNMENT); 5581da177e4SLinus Torvalds card->rsq.next = card->rsq.base; 5591da177e4SLinus Torvalds card->rsq.last = card->rsq.base + (NS_RSQ_NUM_ENTRIES - 1); 5601da177e4SLinus Torvalds for (j = 0; j < NS_RSQ_NUM_ENTRIES; j++) 5611da177e4SLinus Torvalds ns_rsqe_init(card->rsq.base + j); 5621da177e4SLinus Torvalds writel(0x00000000, card->membase + RSQH); 563864a3ff6Schas williams - CONTRACTOR writel(ALIGN(card->rsq.dma, NS_RSQ_ALIGNMENT), card->membase + RSQB); 564864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: RSQ base at 0x%p.\n", i, card->rsq.base); 5651da177e4SLinus Torvalds 5661da177e4SLinus Torvalds /* Initialize SCQ0, the only VBR SCQ used */ 567a2c1aa54SJesper Juhl card->scq1 = NULL; 568a2c1aa54SJesper Juhl card->scq2 = NULL; 569864a3ff6Schas williams - CONTRACTOR card->scq0 = get_scq(card, VBR_SCQSIZE, NS_VRSCD0); 570098fde11Schas williams - CONTRACTOR if (card->scq0 == NULL) { 5711da177e4SLinus Torvalds printk("nicstar%d: can't get SCQ0.\n", i); 5721da177e4SLinus Torvalds error = 12; 5731da177e4SLinus Torvalds ns_init_card_error(card, error); 5741da177e4SLinus Torvalds return error; 5751da177e4SLinus Torvalds } 576864a3ff6Schas williams - CONTRACTOR u32d[0] = scq_virt_to_bus(card->scq0, card->scq0->base); 5771da177e4SLinus Torvalds u32d[1] = (u32) 0x00000000; 5781da177e4SLinus Torvalds u32d[2] = (u32) 0xffffffff; 5791da177e4SLinus Torvalds u32d[3] = (u32) 0x00000000; 5801da177e4SLinus Torvalds ns_write_sram(card, NS_VRSCD0, u32d, 4); 5811da177e4SLinus Torvalds ns_write_sram(card, NS_VRSCD1, u32d, 4); /* These last two won't be used */ 5821da177e4SLinus Torvalds ns_write_sram(card, NS_VRSCD2, u32d, 4); /* but are initialized, just in case... */ 5831da177e4SLinus Torvalds card->scq0->scd = NS_VRSCD0; 584864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: VBR-SCQ0 base at 0x%p.\n", i, card->scq0->base); 5851da177e4SLinus Torvalds 5861da177e4SLinus Torvalds /* Initialize TSTs */ 5871da177e4SLinus Torvalds card->tst_addr = NS_TST0; 5881da177e4SLinus Torvalds card->tst_free_entries = NS_TST_NUM_ENTRIES; 5891da177e4SLinus Torvalds data = NS_TST_OPCODE_VARIABLE; 5901da177e4SLinus Torvalds for (j = 0; j < NS_TST_NUM_ENTRIES; j++) 5911da177e4SLinus Torvalds ns_write_sram(card, NS_TST0 + j, &data, 1); 5921da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_END, NS_TST0); 5931da177e4SLinus Torvalds ns_write_sram(card, NS_TST0 + NS_TST_NUM_ENTRIES, &data, 1); 5941da177e4SLinus Torvalds for (j = 0; j < NS_TST_NUM_ENTRIES; j++) 5951da177e4SLinus Torvalds ns_write_sram(card, NS_TST1 + j, &data, 1); 5961da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_END, NS_TST1); 5971da177e4SLinus Torvalds ns_write_sram(card, NS_TST1 + NS_TST_NUM_ENTRIES, &data, 1); 5981da177e4SLinus Torvalds for (j = 0; j < NS_TST_NUM_ENTRIES; j++) 5991da177e4SLinus Torvalds card->tste2vc[j] = NULL; 6001da177e4SLinus Torvalds writel(NS_TST0 << 2, card->membase + TSTB); 6011da177e4SLinus Torvalds 6021da177e4SLinus Torvalds /* Initialize RCT. AAL type is set on opening the VC. */ 6031da177e4SLinus Torvalds #ifdef RCQ_SUPPORT 6041da177e4SLinus Torvalds u32d[0] = NS_RCTE_RAWCELLINTEN; 6051da177e4SLinus Torvalds #else 6061da177e4SLinus Torvalds u32d[0] = 0x00000000; 6071da177e4SLinus Torvalds #endif /* RCQ_SUPPORT */ 6081da177e4SLinus Torvalds u32d[1] = 0x00000000; 6091da177e4SLinus Torvalds u32d[2] = 0x00000000; 6101da177e4SLinus Torvalds u32d[3] = 0xFFFFFFFF; 6111da177e4SLinus Torvalds for (j = 0; j < card->rct_size; j++) 6121da177e4SLinus Torvalds ns_write_sram(card, j * 4, u32d, 4); 6131da177e4SLinus Torvalds 614ee41f07cSMarkus Elfring memset(card->vcmap, 0, sizeof(card->vcmap)); 6151da177e4SLinus Torvalds 6161da177e4SLinus Torvalds for (j = 0; j < NS_FRSCD_NUM; j++) 6171da177e4SLinus Torvalds card->scd2vc[j] = NULL; 6181da177e4SLinus Torvalds 6191da177e4SLinus Torvalds /* Initialize buffer levels */ 6201da177e4SLinus Torvalds card->sbnr.min = MIN_SB; 6211da177e4SLinus Torvalds card->sbnr.init = NUM_SB; 6221da177e4SLinus Torvalds card->sbnr.max = MAX_SB; 6231da177e4SLinus Torvalds card->lbnr.min = MIN_LB; 6241da177e4SLinus Torvalds card->lbnr.init = NUM_LB; 6251da177e4SLinus Torvalds card->lbnr.max = MAX_LB; 6261da177e4SLinus Torvalds card->iovnr.min = MIN_IOVB; 6271da177e4SLinus Torvalds card->iovnr.init = NUM_IOVB; 6281da177e4SLinus Torvalds card->iovnr.max = MAX_IOVB; 6291da177e4SLinus Torvalds card->hbnr.min = MIN_HB; 6301da177e4SLinus Torvalds card->hbnr.init = NUM_HB; 6311da177e4SLinus Torvalds card->hbnr.max = MAX_HB; 6321da177e4SLinus Torvalds 633c664d638SDaeseok Youn card->sm_handle = NULL; 6341da177e4SLinus Torvalds card->sm_addr = 0x00000000; 635c664d638SDaeseok Youn card->lg_handle = NULL; 6361da177e4SLinus Torvalds card->lg_addr = 0x00000000; 6371da177e4SLinus Torvalds 6381da177e4SLinus Torvalds card->efbie = 1; /* To prevent push_rxbufs from enabling the interrupt */ 6391da177e4SLinus Torvalds 640864a3ff6Schas williams - CONTRACTOR idr_init(&card->idr); 641864a3ff6Schas williams - CONTRACTOR 6421da177e4SLinus Torvalds /* Pre-allocate some huge buffers */ 6431da177e4SLinus Torvalds skb_queue_head_init(&card->hbpool.queue); 6441da177e4SLinus Torvalds card->hbpool.count = 0; 645098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_HB; j++) { 6461da177e4SLinus Torvalds struct sk_buff *hb; 6471da177e4SLinus Torvalds hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); 648098fde11Schas williams - CONTRACTOR if (hb == NULL) { 649098fde11Schas williams - CONTRACTOR printk 650098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d huge buffers.\n", 6511da177e4SLinus Torvalds i, j, NUM_HB); 6521da177e4SLinus Torvalds error = 13; 6531da177e4SLinus Torvalds ns_init_card_error(card, error); 6541da177e4SLinus Torvalds return error; 6551da177e4SLinus Torvalds } 656864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(hb) = BUF_NONE; 6571da177e4SLinus Torvalds skb_queue_tail(&card->hbpool.queue, hb); 6581da177e4SLinus Torvalds card->hbpool.count++; 6591da177e4SLinus Torvalds } 6601da177e4SLinus Torvalds 6611da177e4SLinus Torvalds /* Allocate large buffers */ 6621da177e4SLinus Torvalds skb_queue_head_init(&card->lbpool.queue); 6631da177e4SLinus Torvalds card->lbpool.count = 0; /* Not used */ 664098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_LB; j++) { 6651da177e4SLinus Torvalds struct sk_buff *lb; 6661da177e4SLinus Torvalds lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); 667098fde11Schas williams - CONTRACTOR if (lb == NULL) { 668098fde11Schas williams - CONTRACTOR printk 669098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d large buffers.\n", 6701da177e4SLinus Torvalds i, j, NUM_LB); 6711da177e4SLinus Torvalds error = 14; 6721da177e4SLinus Torvalds ns_init_card_error(card, error); 6731da177e4SLinus Torvalds return error; 6741da177e4SLinus Torvalds } 675864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(lb) = BUF_LG; 6761da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, lb); 6771da177e4SLinus Torvalds skb_reserve(lb, NS_SMBUFSIZE); 6788728b834SDavid S. Miller push_rxbufs(card, lb); 6791da177e4SLinus Torvalds /* Due to the implementation of push_rxbufs() this is 1, not 0 */ 680098fde11Schas williams - CONTRACTOR if (j == 1) { 6811da177e4SLinus Torvalds card->rcbuf = lb; 682864a3ff6Schas williams - CONTRACTOR card->rawcell = (struct ns_rcqe *) lb->data; 683864a3ff6Schas williams - CONTRACTOR card->rawch = NS_PRV_DMA(lb); 6841da177e4SLinus Torvalds } 6851da177e4SLinus Torvalds } 6861da177e4SLinus Torvalds /* Test for strange behaviour which leads to crashes */ 687098fde11Schas williams - CONTRACTOR if ((bcount = 688098fde11Schas williams - CONTRACTOR ns_stat_lfbqc_get(readl(card->membase + STAT))) < card->lbnr.min) { 689098fde11Schas williams - CONTRACTOR printk 690098fde11Schas williams - CONTRACTOR ("nicstar%d: Strange... Just allocated %d large buffers and lfbqc = %d.\n", 6911da177e4SLinus Torvalds i, j, bcount); 6921da177e4SLinus Torvalds error = 14; 6931da177e4SLinus Torvalds ns_init_card_error(card, error); 6941da177e4SLinus Torvalds return error; 6951da177e4SLinus Torvalds } 6961da177e4SLinus Torvalds 6971da177e4SLinus Torvalds /* Allocate small buffers */ 6981da177e4SLinus Torvalds skb_queue_head_init(&card->sbpool.queue); 6991da177e4SLinus Torvalds card->sbpool.count = 0; /* Not used */ 700098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_SB; j++) { 7011da177e4SLinus Torvalds struct sk_buff *sb; 7021da177e4SLinus Torvalds sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); 703098fde11Schas williams - CONTRACTOR if (sb == NULL) { 704098fde11Schas williams - CONTRACTOR printk 705098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d small buffers.\n", 7061da177e4SLinus Torvalds i, j, NUM_SB); 7071da177e4SLinus Torvalds error = 15; 7081da177e4SLinus Torvalds ns_init_card_error(card, error); 7091da177e4SLinus Torvalds return error; 7101da177e4SLinus Torvalds } 711864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(sb) = BUF_SM; 7121da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, sb); 7131da177e4SLinus Torvalds skb_reserve(sb, NS_AAL0_HEADER); 7148728b834SDavid S. Miller push_rxbufs(card, sb); 7151da177e4SLinus Torvalds } 7161da177e4SLinus Torvalds /* Test for strange behaviour which leads to crashes */ 717098fde11Schas williams - CONTRACTOR if ((bcount = 718098fde11Schas williams - CONTRACTOR ns_stat_sfbqc_get(readl(card->membase + STAT))) < card->sbnr.min) { 719098fde11Schas williams - CONTRACTOR printk 720098fde11Schas williams - CONTRACTOR ("nicstar%d: Strange... Just allocated %d small buffers and sfbqc = %d.\n", 7211da177e4SLinus Torvalds i, j, bcount); 7221da177e4SLinus Torvalds error = 15; 7231da177e4SLinus Torvalds ns_init_card_error(card, error); 7241da177e4SLinus Torvalds return error; 7251da177e4SLinus Torvalds } 7261da177e4SLinus Torvalds 7271da177e4SLinus Torvalds /* Allocate iovec buffers */ 7281da177e4SLinus Torvalds skb_queue_head_init(&card->iovpool.queue); 7291da177e4SLinus Torvalds card->iovpool.count = 0; 730098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_IOVB; j++) { 7311da177e4SLinus Torvalds struct sk_buff *iovb; 7321da177e4SLinus Torvalds iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); 733098fde11Schas williams - CONTRACTOR if (iovb == NULL) { 734098fde11Schas williams - CONTRACTOR printk 735098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d iovec buffers.\n", 7361da177e4SLinus Torvalds i, j, NUM_IOVB); 7371da177e4SLinus Torvalds error = 16; 7381da177e4SLinus Torvalds ns_init_card_error(card, error); 7391da177e4SLinus Torvalds return error; 7401da177e4SLinus Torvalds } 741864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE; 7421da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, iovb); 7431da177e4SLinus Torvalds card->iovpool.count++; 7441da177e4SLinus Torvalds } 7451da177e4SLinus Torvalds 7461da177e4SLinus Torvalds /* Configure NICStAR */ 7471da177e4SLinus Torvalds if (card->rct_size == 4096) 7481da177e4SLinus Torvalds ns_cfg_rctsize = NS_CFG_RCTSIZE_4096_ENTRIES; 7491da177e4SLinus Torvalds else /* (card->rct_size == 16384) */ 7501da177e4SLinus Torvalds ns_cfg_rctsize = NS_CFG_RCTSIZE_16384_ENTRIES; 7511da177e4SLinus Torvalds 7521da177e4SLinus Torvalds card->efbie = 1; 7531da177e4SLinus Torvalds 75452961955SChas Williams card->intcnt = 0; 755098fde11Schas williams - CONTRACTOR if (request_irq 75606df277aSchas williams - CONTRACTOR (pcidev->irq, &ns_irq_handler, IRQF_SHARED, "nicstar", card) != 0) { 75752961955SChas Williams printk("nicstar%d: can't allocate IRQ %d.\n", i, pcidev->irq); 75852961955SChas Williams error = 9; 75952961955SChas Williams ns_init_card_error(card, error); 76052961955SChas Williams return error; 76152961955SChas Williams } 76252961955SChas Williams 7631da177e4SLinus Torvalds /* Register device */ 764d9ca676bSDan Williams card->atmdev = atm_dev_register("nicstar", &card->pcidev->dev, &atm_ops, 765d9ca676bSDan Williams -1, NULL); 766098fde11Schas williams - CONTRACTOR if (card->atmdev == NULL) { 7671da177e4SLinus Torvalds printk("nicstar%d: can't register device.\n", i); 7681da177e4SLinus Torvalds error = 17; 7691da177e4SLinus Torvalds ns_init_card_error(card, error); 7701da177e4SLinus Torvalds return error; 7711da177e4SLinus Torvalds } 7721da177e4SLinus Torvalds 773d2bb3905SAndy Shevchenko if (mac[i] == NULL || !mac_pton(mac[i], card->atmdev->esi)) { 7741da177e4SLinus Torvalds nicstar_read_eprom(card->membase, NICSTAR_EPROM_MAC_ADDR_OFFSET, 7751da177e4SLinus Torvalds card->atmdev->esi, 6); 7764c55a462Sdingtianhong if (ether_addr_equal(card->atmdev->esi, "\x00\x00\x00\x00\x00\x00")) { 777098fde11Schas williams - CONTRACTOR nicstar_read_eprom(card->membase, 778098fde11Schas williams - CONTRACTOR NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT, 7791da177e4SLinus Torvalds card->atmdev->esi, 6); 7801da177e4SLinus Torvalds } 7811da177e4SLinus Torvalds } 7821da177e4SLinus Torvalds 7831154b299Shartleys printk("nicstar%d: MAC address %pM\n", i, card->atmdev->esi); 7841da177e4SLinus Torvalds 7851da177e4SLinus Torvalds card->atmdev->dev_data = card; 7861da177e4SLinus Torvalds card->atmdev->ci_range.vpi_bits = card->vpibits; 7871da177e4SLinus Torvalds card->atmdev->ci_range.vci_bits = card->vcibits; 7881da177e4SLinus Torvalds card->atmdev->link_rate = card->max_pcr; 7891da177e4SLinus Torvalds card->atmdev->phy = NULL; 7901da177e4SLinus Torvalds 7911da177e4SLinus Torvalds #ifdef CONFIG_ATM_NICSTAR_USE_SUNI 7921da177e4SLinus Torvalds if (card->max_pcr == ATM_OC3_PCR) 7931da177e4SLinus Torvalds suni_init(card->atmdev); 7941da177e4SLinus Torvalds #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ 7951da177e4SLinus Torvalds 7961da177e4SLinus Torvalds #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 7971da177e4SLinus Torvalds if (card->max_pcr == ATM_25_PCR) 7981da177e4SLinus Torvalds idt77105_init(card->atmdev); 7991da177e4SLinus Torvalds #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ 8001da177e4SLinus Torvalds 8011da177e4SLinus Torvalds if (card->atmdev->phy && card->atmdev->phy->start) 8021da177e4SLinus Torvalds card->atmdev->phy->start(card->atmdev); 8031da177e4SLinus Torvalds 804098fde11Schas 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 */ 805098fde11Schas williams - CONTRACTOR NS_CFG_RSQAFIE | NS_CFG_TXEN | NS_CFG_TXIE | NS_CFG_TSQFIE_OPT | /* Only enabled if ENABLE_TSQFIE */ 806098fde11Schas williams - CONTRACTOR NS_CFG_PHYIE, card->membase + CFG); 8071da177e4SLinus Torvalds 8081da177e4SLinus Torvalds num_cards++; 8091da177e4SLinus Torvalds 8101da177e4SLinus Torvalds return error; 8111da177e4SLinus Torvalds } 8121da177e4SLinus Torvalds 8136c44512dSGreg Kroah-Hartman static void ns_init_card_error(ns_dev *card, int error) 8141da177e4SLinus Torvalds { 815098fde11Schas williams - CONTRACTOR if (error >= 17) { 8161da177e4SLinus Torvalds writel(0x00000000, card->membase + CFG); 8171da177e4SLinus Torvalds } 818098fde11Schas williams - CONTRACTOR if (error >= 16) { 8191da177e4SLinus Torvalds struct sk_buff *iovb; 8201da177e4SLinus Torvalds while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) 8211da177e4SLinus Torvalds dev_kfree_skb_any(iovb); 8221da177e4SLinus Torvalds } 823098fde11Schas williams - CONTRACTOR if (error >= 15) { 8241da177e4SLinus Torvalds struct sk_buff *sb; 8251da177e4SLinus Torvalds while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL) 8261da177e4SLinus Torvalds dev_kfree_skb_any(sb); 827864a3ff6Schas williams - CONTRACTOR free_scq(card, card->scq0, NULL); 8281da177e4SLinus Torvalds } 829098fde11Schas williams - CONTRACTOR if (error >= 14) { 8301da177e4SLinus Torvalds struct sk_buff *lb; 8311da177e4SLinus Torvalds while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL) 8321da177e4SLinus Torvalds dev_kfree_skb_any(lb); 8331da177e4SLinus Torvalds } 834098fde11Schas williams - CONTRACTOR if (error >= 13) { 8351da177e4SLinus Torvalds struct sk_buff *hb; 8361da177e4SLinus Torvalds while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) 8371da177e4SLinus Torvalds dev_kfree_skb_any(hb); 8381da177e4SLinus Torvalds } 839098fde11Schas williams - CONTRACTOR if (error >= 12) { 8401da177e4SLinus Torvalds kfree(card->rsq.org); 8411da177e4SLinus Torvalds } 842098fde11Schas williams - CONTRACTOR if (error >= 11) { 8431da177e4SLinus Torvalds kfree(card->tsq.org); 8441da177e4SLinus Torvalds } 845098fde11Schas williams - CONTRACTOR if (error >= 10) { 8461da177e4SLinus Torvalds free_irq(card->pcidev->irq, card); 8471da177e4SLinus Torvalds } 848098fde11Schas williams - CONTRACTOR if (error >= 4) { 8491da177e4SLinus Torvalds iounmap(card->membase); 8501da177e4SLinus Torvalds } 851098fde11Schas williams - CONTRACTOR if (error >= 3) { 8521da177e4SLinus Torvalds pci_disable_device(card->pcidev); 8531da177e4SLinus Torvalds kfree(card); 8541da177e4SLinus Torvalds } 8551da177e4SLinus Torvalds } 8561da177e4SLinus Torvalds 857864a3ff6Schas williams - CONTRACTOR static scq_info *get_scq(ns_dev *card, int size, u32 scd) 8581da177e4SLinus Torvalds { 8591da177e4SLinus Torvalds scq_info *scq; 8601da177e4SLinus Torvalds int i; 8611da177e4SLinus Torvalds 8621da177e4SLinus Torvalds if (size != VBR_SCQSIZE && size != CBR_SCQSIZE) 863a2c1aa54SJesper Juhl return NULL; 8641da177e4SLinus Torvalds 86524310fd5SMarkus Elfring scq = kmalloc(sizeof(*scq), GFP_KERNEL); 866864a3ff6Schas williams - CONTRACTOR if (!scq) 867a2c1aa54SJesper Juhl return NULL; 868ede58ef2Schas williams - CONTRACTOR scq->org = dma_alloc_coherent(&card->pcidev->dev, 869ede58ef2Schas williams - CONTRACTOR 2 * size, &scq->dma, GFP_KERNEL); 870864a3ff6Schas williams - CONTRACTOR if (!scq->org) { 8711da177e4SLinus Torvalds kfree(scq); 872a2c1aa54SJesper Juhl return NULL; 8731da177e4SLinus Torvalds } 87478706121SMarkus Elfring scq->skb = kmalloc_array(size / NS_SCQE_SIZE, 87578706121SMarkus Elfring sizeof(*scq->skb), 87678706121SMarkus Elfring GFP_KERNEL); 877864a3ff6Schas williams - CONTRACTOR if (!scq->skb) { 878eab81466SChristophe Jaillet dma_free_coherent(&card->pcidev->dev, 879eab81466SChristophe Jaillet 2 * size, scq->org, scq->dma); 8801da177e4SLinus Torvalds kfree(scq); 881a2c1aa54SJesper Juhl return NULL; 8821da177e4SLinus Torvalds } 8831da177e4SLinus Torvalds scq->num_entries = size / NS_SCQE_SIZE; 884864a3ff6Schas williams - CONTRACTOR scq->base = PTR_ALIGN(scq->org, size); 8851da177e4SLinus Torvalds scq->next = scq->base; 8861da177e4SLinus Torvalds scq->last = scq->base + (scq->num_entries - 1); 8871da177e4SLinus Torvalds scq->tail = scq->last; 8881da177e4SLinus Torvalds scq->scd = scd; 8891da177e4SLinus Torvalds scq->num_entries = size / NS_SCQE_SIZE; 8901da177e4SLinus Torvalds scq->tbd_count = 0; 8911da177e4SLinus Torvalds init_waitqueue_head(&scq->scqfull_waitq); 8921da177e4SLinus Torvalds scq->full = 0; 8931da177e4SLinus Torvalds spin_lock_init(&scq->lock); 8941da177e4SLinus Torvalds 8951da177e4SLinus Torvalds for (i = 0; i < scq->num_entries; i++) 8961da177e4SLinus Torvalds scq->skb[i] = NULL; 8971da177e4SLinus Torvalds 8981da177e4SLinus Torvalds return scq; 8991da177e4SLinus Torvalds } 9001da177e4SLinus Torvalds 9011da177e4SLinus Torvalds /* For variable rate SCQ vcc must be NULL */ 902864a3ff6Schas williams - CONTRACTOR static void free_scq(ns_dev *card, scq_info *scq, struct atm_vcc *vcc) 9031da177e4SLinus Torvalds { 9041da177e4SLinus Torvalds int i; 9051da177e4SLinus Torvalds 9061da177e4SLinus Torvalds if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) 907098fde11Schas williams - CONTRACTOR for (i = 0; i < scq->num_entries; i++) { 908098fde11Schas williams - CONTRACTOR if (scq->skb[i] != NULL) { 9091da177e4SLinus Torvalds vcc = ATM_SKB(scq->skb[i])->vcc; 9101da177e4SLinus Torvalds if (vcc->pop != NULL) 9111da177e4SLinus Torvalds vcc->pop(vcc, scq->skb[i]); 9121da177e4SLinus Torvalds else 9131da177e4SLinus Torvalds dev_kfree_skb_any(scq->skb[i]); 9141da177e4SLinus Torvalds } 915098fde11Schas williams - CONTRACTOR } else { /* vcc must be != NULL */ 916098fde11Schas williams - CONTRACTOR 917098fde11Schas williams - CONTRACTOR if (vcc == NULL) { 918098fde11Schas williams - CONTRACTOR printk 919098fde11Schas williams - CONTRACTOR ("nicstar: free_scq() called with vcc == NULL for fixed rate scq."); 9201da177e4SLinus Torvalds for (i = 0; i < scq->num_entries; i++) 9211da177e4SLinus Torvalds dev_kfree_skb_any(scq->skb[i]); 922098fde11Schas williams - CONTRACTOR } else 923098fde11Schas williams - CONTRACTOR for (i = 0; i < scq->num_entries; i++) { 924098fde11Schas williams - CONTRACTOR if (scq->skb[i] != NULL) { 9251da177e4SLinus Torvalds if (vcc->pop != NULL) 9261da177e4SLinus Torvalds vcc->pop(vcc, scq->skb[i]); 9271da177e4SLinus Torvalds else 9281da177e4SLinus Torvalds dev_kfree_skb_any(scq->skb[i]); 9291da177e4SLinus Torvalds } 9301da177e4SLinus Torvalds } 9311da177e4SLinus Torvalds } 9321da177e4SLinus Torvalds kfree(scq->skb); 933ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&card->pcidev->dev, 934864a3ff6Schas williams - CONTRACTOR 2 * (scq->num_entries == VBR_SCQ_NUM_ENTRIES ? 935864a3ff6Schas williams - CONTRACTOR VBR_SCQSIZE : CBR_SCQSIZE), 936864a3ff6Schas williams - CONTRACTOR scq->org, scq->dma); 9371da177e4SLinus Torvalds kfree(scq); 9381da177e4SLinus Torvalds } 9391da177e4SLinus Torvalds 9401da177e4SLinus Torvalds /* The handles passed must be pointers to the sk_buff containing the small 9411da177e4SLinus Torvalds or large buffer(s) cast to u32. */ 9428728b834SDavid S. Miller static void push_rxbufs(ns_dev * card, struct sk_buff *skb) 9431da177e4SLinus Torvalds { 944864a3ff6Schas williams - CONTRACTOR struct sk_buff *handle1, *handle2; 945b051f6edSTejun Heo int id1, id2; 946864a3ff6Schas williams - CONTRACTOR u32 addr1, addr2; 9471da177e4SLinus Torvalds u32 stat; 9481da177e4SLinus Torvalds unsigned long flags; 9491da177e4SLinus Torvalds 9508728b834SDavid S. Miller /* *BARF* */ 951864a3ff6Schas williams - CONTRACTOR handle2 = NULL; 952864a3ff6Schas williams - CONTRACTOR addr2 = 0; 953864a3ff6Schas williams - CONTRACTOR handle1 = skb; 954ede58ef2Schas williams - CONTRACTOR addr1 = dma_map_single(&card->pcidev->dev, 955864a3ff6Schas williams - CONTRACTOR skb->data, 956864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM 957864a3ff6Schas williams - CONTRACTOR ? NS_SMSKBSIZE : NS_LGSKBSIZE), 958ede58ef2Schas williams - CONTRACTOR DMA_TO_DEVICE); 959864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb) = addr1; /* save so we can unmap later */ 9601da177e4SLinus Torvalds 9611da177e4SLinus Torvalds #ifdef GENERAL_DEBUG 9621da177e4SLinus Torvalds if (!addr1) 963098fde11Schas williams - CONTRACTOR printk("nicstar%d: push_rxbufs called with addr1 = 0.\n", 964098fde11Schas williams - CONTRACTOR card->index); 9651da177e4SLinus Torvalds #endif /* GENERAL_DEBUG */ 9661da177e4SLinus Torvalds 9671da177e4SLinus Torvalds stat = readl(card->membase + STAT); 9681da177e4SLinus Torvalds card->sbfqc = ns_stat_sfbqc_get(stat); 9691da177e4SLinus Torvalds card->lbfqc = ns_stat_lfbqc_get(stat); 970864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) == BUF_SM) { 971098fde11Schas williams - CONTRACTOR if (!addr2) { 972098fde11Schas williams - CONTRACTOR if (card->sm_addr) { 9731da177e4SLinus Torvalds addr2 = card->sm_addr; 9741da177e4SLinus Torvalds handle2 = card->sm_handle; 9751da177e4SLinus Torvalds card->sm_addr = 0x00000000; 976c664d638SDaeseok Youn card->sm_handle = NULL; 977098fde11Schas williams - CONTRACTOR } else { /* (!sm_addr) */ 978098fde11Schas williams - CONTRACTOR 9791da177e4SLinus Torvalds card->sm_addr = addr1; 9801da177e4SLinus Torvalds card->sm_handle = handle1; 9811da177e4SLinus Torvalds } 9821da177e4SLinus Torvalds } 983098fde11Schas williams - CONTRACTOR } else { /* buf_type == BUF_LG */ 984098fde11Schas williams - CONTRACTOR 985098fde11Schas williams - CONTRACTOR if (!addr2) { 986098fde11Schas williams - CONTRACTOR if (card->lg_addr) { 9871da177e4SLinus Torvalds addr2 = card->lg_addr; 9881da177e4SLinus Torvalds handle2 = card->lg_handle; 9891da177e4SLinus Torvalds card->lg_addr = 0x00000000; 990c664d638SDaeseok Youn card->lg_handle = NULL; 991098fde11Schas williams - CONTRACTOR } else { /* (!lg_addr) */ 992098fde11Schas williams - CONTRACTOR 9931da177e4SLinus Torvalds card->lg_addr = addr1; 9941da177e4SLinus Torvalds card->lg_handle = handle1; 9951da177e4SLinus Torvalds } 9961da177e4SLinus Torvalds } 9971da177e4SLinus Torvalds } 9981da177e4SLinus Torvalds 999098fde11Schas williams - CONTRACTOR if (addr2) { 1000864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) == BUF_SM) { 1001098fde11Schas williams - CONTRACTOR if (card->sbfqc >= card->sbnr.max) { 1002864a3ff6Schas williams - CONTRACTOR skb_unlink(handle1, &card->sbpool.queue); 1003864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle1); 1004864a3ff6Schas williams - CONTRACTOR skb_unlink(handle2, &card->sbpool.queue); 1005864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle2); 10061da177e4SLinus Torvalds return; 1007098fde11Schas williams - CONTRACTOR } else 10081da177e4SLinus Torvalds card->sbfqc += 2; 1009098fde11Schas williams - CONTRACTOR } else { /* (buf_type == BUF_LG) */ 1010098fde11Schas williams - CONTRACTOR 1011098fde11Schas williams - CONTRACTOR if (card->lbfqc >= card->lbnr.max) { 1012864a3ff6Schas williams - CONTRACTOR skb_unlink(handle1, &card->lbpool.queue); 1013864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle1); 1014864a3ff6Schas williams - CONTRACTOR skb_unlink(handle2, &card->lbpool.queue); 1015864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle2); 10161da177e4SLinus Torvalds return; 1017098fde11Schas williams - CONTRACTOR } else 10181da177e4SLinus Torvalds card->lbfqc += 2; 10191da177e4SLinus Torvalds } 10201da177e4SLinus Torvalds 1021b051f6edSTejun Heo id1 = idr_alloc(&card->idr, handle1, 0, 0, GFP_ATOMIC); 1022b051f6edSTejun Heo if (id1 < 0) 1023864a3ff6Schas williams - CONTRACTOR goto out; 10241da177e4SLinus Torvalds 1025b051f6edSTejun Heo id2 = idr_alloc(&card->idr, handle2, 0, 0, GFP_ATOMIC); 1026b051f6edSTejun Heo if (id2 < 0) 1027864a3ff6Schas williams - CONTRACTOR goto out; 1028864a3ff6Schas williams - CONTRACTOR 1029864a3ff6Schas williams - CONTRACTOR spin_lock_irqsave(&card->res_lock, flags); 10301da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 10311da177e4SLinus Torvalds writel(addr2, card->membase + DR3); 1032864a3ff6Schas williams - CONTRACTOR writel(id2, card->membase + DR2); 10331da177e4SLinus Torvalds writel(addr1, card->membase + DR1); 1034864a3ff6Schas williams - CONTRACTOR writel(id1, card->membase + DR0); 1035864a3ff6Schas williams - CONTRACTOR writel(NS_CMD_WRITE_FREEBUFQ | NS_PRV_BUFTYPE(skb), 1036098fde11Schas williams - CONTRACTOR card->membase + CMD); 10371da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags); 10381da177e4SLinus Torvalds 1039098fde11Schas williams - CONTRACTOR XPRINTK("nicstar%d: Pushing %s buffers at 0x%x and 0x%x.\n", 1040098fde11Schas williams - CONTRACTOR card->index, 1041864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM ? "small" : "large"), 1042864a3ff6Schas williams - CONTRACTOR addr1, addr2); 10431da177e4SLinus Torvalds } 10441da177e4SLinus Torvalds 10451da177e4SLinus Torvalds if (!card->efbie && card->sbfqc >= card->sbnr.min && 1046098fde11Schas williams - CONTRACTOR card->lbfqc >= card->lbnr.min) { 10471da177e4SLinus Torvalds card->efbie = 1; 1048098fde11Schas williams - CONTRACTOR writel((readl(card->membase + CFG) | NS_CFG_EFBIE), 1049098fde11Schas williams - CONTRACTOR card->membase + CFG); 10501da177e4SLinus Torvalds } 10511da177e4SLinus Torvalds 1052864a3ff6Schas williams - CONTRACTOR out: 10531da177e4SLinus Torvalds return; 10541da177e4SLinus Torvalds } 10551da177e4SLinus Torvalds 10567d12e780SDavid Howells static irqreturn_t ns_irq_handler(int irq, void *dev_id) 10571da177e4SLinus Torvalds { 10581da177e4SLinus Torvalds u32 stat_r; 10591da177e4SLinus Torvalds ns_dev *card; 10601da177e4SLinus Torvalds struct atm_dev *dev; 10611da177e4SLinus Torvalds unsigned long flags; 10621da177e4SLinus Torvalds 10631da177e4SLinus Torvalds card = (ns_dev *) dev_id; 10641da177e4SLinus Torvalds dev = card->atmdev; 10651da177e4SLinus Torvalds card->intcnt++; 10661da177e4SLinus Torvalds 10671da177e4SLinus Torvalds PRINTK("nicstar%d: NICStAR generated an interrupt\n", card->index); 10681da177e4SLinus Torvalds 106936ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 10701da177e4SLinus Torvalds 10711da177e4SLinus Torvalds stat_r = readl(card->membase + STAT); 10721da177e4SLinus Torvalds 10731da177e4SLinus Torvalds /* Transmit Status Indicator has been written to T. S. Queue */ 1074098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TSIF) { 10751da177e4SLinus Torvalds TXPRINTK("nicstar%d: TSI interrupt\n", card->index); 10761da177e4SLinus Torvalds process_tsq(card); 10771da177e4SLinus Torvalds writel(NS_STAT_TSIF, card->membase + STAT); 10781da177e4SLinus Torvalds } 10791da177e4SLinus Torvalds 10801da177e4SLinus Torvalds /* Incomplete CS-PDU has been transmitted */ 1081098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TXICP) { 10821da177e4SLinus Torvalds writel(NS_STAT_TXICP, card->membase + STAT); 10831da177e4SLinus Torvalds TXPRINTK("nicstar%d: Incomplete CS-PDU transmitted.\n", 10841da177e4SLinus Torvalds card->index); 10851da177e4SLinus Torvalds } 10861da177e4SLinus Torvalds 10871da177e4SLinus Torvalds /* Transmit Status Queue 7/8 full */ 1088098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TSQF) { 10891da177e4SLinus Torvalds writel(NS_STAT_TSQF, card->membase + STAT); 10901da177e4SLinus Torvalds PRINTK("nicstar%d: TSQ full.\n", card->index); 10911da177e4SLinus Torvalds process_tsq(card); 10921da177e4SLinus Torvalds } 10931da177e4SLinus Torvalds 10941da177e4SLinus Torvalds /* Timer overflow */ 1095098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TMROF) { 10961da177e4SLinus Torvalds writel(NS_STAT_TMROF, card->membase + STAT); 10971da177e4SLinus Torvalds PRINTK("nicstar%d: Timer overflow.\n", card->index); 10981da177e4SLinus Torvalds } 10991da177e4SLinus Torvalds 11001da177e4SLinus Torvalds /* PHY device interrupt signal active */ 1101098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_PHYI) { 11021da177e4SLinus Torvalds writel(NS_STAT_PHYI, card->membase + STAT); 11031da177e4SLinus Torvalds PRINTK("nicstar%d: PHY interrupt.\n", card->index); 11041da177e4SLinus Torvalds if (dev->phy && dev->phy->interrupt) { 11051da177e4SLinus Torvalds dev->phy->interrupt(dev); 11061da177e4SLinus Torvalds } 11071da177e4SLinus Torvalds } 11081da177e4SLinus Torvalds 11091da177e4SLinus Torvalds /* Small Buffer Queue is full */ 1110098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_SFBQF) { 11111da177e4SLinus Torvalds writel(NS_STAT_SFBQF, card->membase + STAT); 1112098fde11Schas williams - CONTRACTOR printk("nicstar%d: Small free buffer queue is full.\n", 1113098fde11Schas williams - CONTRACTOR card->index); 11141da177e4SLinus Torvalds } 11151da177e4SLinus Torvalds 11161da177e4SLinus Torvalds /* Large Buffer Queue is full */ 1117098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_LFBQF) { 11181da177e4SLinus Torvalds writel(NS_STAT_LFBQF, card->membase + STAT); 1119098fde11Schas williams - CONTRACTOR printk("nicstar%d: Large free buffer queue is full.\n", 1120098fde11Schas williams - CONTRACTOR card->index); 11211da177e4SLinus Torvalds } 11221da177e4SLinus Torvalds 11231da177e4SLinus Torvalds /* Receive Status Queue is full */ 1124098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_RSQF) { 11251da177e4SLinus Torvalds writel(NS_STAT_RSQF, card->membase + STAT); 11261da177e4SLinus Torvalds printk("nicstar%d: RSQ full.\n", card->index); 11271da177e4SLinus Torvalds process_rsq(card); 11281da177e4SLinus Torvalds } 11291da177e4SLinus Torvalds 11301da177e4SLinus Torvalds /* Complete CS-PDU received */ 1131098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_EOPDU) { 11321da177e4SLinus Torvalds RXPRINTK("nicstar%d: End of CS-PDU received.\n", card->index); 11331da177e4SLinus Torvalds process_rsq(card); 11341da177e4SLinus Torvalds writel(NS_STAT_EOPDU, card->membase + STAT); 11351da177e4SLinus Torvalds } 11361da177e4SLinus Torvalds 11371da177e4SLinus Torvalds /* Raw cell received */ 1138098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_RAWCF) { 11391da177e4SLinus Torvalds writel(NS_STAT_RAWCF, card->membase + STAT); 11401da177e4SLinus Torvalds #ifndef RCQ_SUPPORT 11411da177e4SLinus Torvalds printk("nicstar%d: Raw cell received and no support yet...\n", 11421da177e4SLinus Torvalds card->index); 11431da177e4SLinus Torvalds #endif /* RCQ_SUPPORT */ 11441da177e4SLinus Torvalds /* NOTE: the following procedure may keep a raw cell pending until the 11451da177e4SLinus Torvalds next interrupt. As this preliminary support is only meant to 11461da177e4SLinus Torvalds avoid buffer leakage, this is not an issue. */ 1147098fde11Schas williams - CONTRACTOR while (readl(card->membase + RAWCT) != card->rawch) { 11481da177e4SLinus Torvalds 1149864a3ff6Schas williams - CONTRACTOR if (ns_rcqe_islast(card->rawcell)) { 11501da177e4SLinus Torvalds struct sk_buff *oldbuf; 11511da177e4SLinus Torvalds 11521da177e4SLinus Torvalds oldbuf = card->rcbuf; 1153864a3ff6Schas williams - CONTRACTOR card->rcbuf = idr_find(&card->idr, 1154864a3ff6Schas williams - CONTRACTOR ns_rcqe_nextbufhandle(card->rawcell)); 1155864a3ff6Schas williams - CONTRACTOR card->rawch = NS_PRV_DMA(card->rcbuf); 1156864a3ff6Schas williams - CONTRACTOR card->rawcell = (struct ns_rcqe *) 1157864a3ff6Schas williams - CONTRACTOR card->rcbuf->data; 11581da177e4SLinus Torvalds recycle_rx_buf(card, oldbuf); 1159864a3ff6Schas williams - CONTRACTOR } else { 11601da177e4SLinus Torvalds card->rawch += NS_RCQE_SIZE; 1161864a3ff6Schas williams - CONTRACTOR card->rawcell++; 1162864a3ff6Schas williams - CONTRACTOR } 11631da177e4SLinus Torvalds } 11641da177e4SLinus Torvalds } 11651da177e4SLinus Torvalds 11661da177e4SLinus Torvalds /* Small buffer queue is empty */ 1167098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_SFBQE) { 11681da177e4SLinus Torvalds int i; 11691da177e4SLinus Torvalds struct sk_buff *sb; 11701da177e4SLinus Torvalds 11711da177e4SLinus Torvalds writel(NS_STAT_SFBQE, card->membase + STAT); 11721da177e4SLinus Torvalds printk("nicstar%d: Small free buffer queue empty.\n", 11731da177e4SLinus Torvalds card->index); 1174098fde11Schas williams - CONTRACTOR for (i = 0; i < card->sbnr.min; i++) { 11751da177e4SLinus Torvalds sb = dev_alloc_skb(NS_SMSKBSIZE); 1176098fde11Schas williams - CONTRACTOR if (sb == NULL) { 1177098fde11Schas williams - CONTRACTOR writel(readl(card->membase + CFG) & 1178098fde11Schas williams - CONTRACTOR ~NS_CFG_EFBIE, card->membase + CFG); 11791da177e4SLinus Torvalds card->efbie = 0; 11801da177e4SLinus Torvalds break; 11811da177e4SLinus Torvalds } 1182864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(sb) = BUF_SM; 11831da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, sb); 11841da177e4SLinus Torvalds skb_reserve(sb, NS_AAL0_HEADER); 11858728b834SDavid S. Miller push_rxbufs(card, sb); 11861da177e4SLinus Torvalds } 11871da177e4SLinus Torvalds card->sbfqc = i; 11881da177e4SLinus Torvalds process_rsq(card); 11891da177e4SLinus Torvalds } 11901da177e4SLinus Torvalds 11911da177e4SLinus Torvalds /* Large buffer queue empty */ 1192098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_LFBQE) { 11931da177e4SLinus Torvalds int i; 11941da177e4SLinus Torvalds struct sk_buff *lb; 11951da177e4SLinus Torvalds 11961da177e4SLinus Torvalds writel(NS_STAT_LFBQE, card->membase + STAT); 11971da177e4SLinus Torvalds printk("nicstar%d: Large free buffer queue empty.\n", 11981da177e4SLinus Torvalds card->index); 1199098fde11Schas williams - CONTRACTOR for (i = 0; i < card->lbnr.min; i++) { 12001da177e4SLinus Torvalds lb = dev_alloc_skb(NS_LGSKBSIZE); 1201098fde11Schas williams - CONTRACTOR if (lb == NULL) { 1202098fde11Schas williams - CONTRACTOR writel(readl(card->membase + CFG) & 1203098fde11Schas williams - CONTRACTOR ~NS_CFG_EFBIE, card->membase + CFG); 12041da177e4SLinus Torvalds card->efbie = 0; 12051da177e4SLinus Torvalds break; 12061da177e4SLinus Torvalds } 1207864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(lb) = BUF_LG; 12081da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, lb); 12091da177e4SLinus Torvalds skb_reserve(lb, NS_SMBUFSIZE); 12108728b834SDavid S. Miller push_rxbufs(card, lb); 12111da177e4SLinus Torvalds } 12121da177e4SLinus Torvalds card->lbfqc = i; 12131da177e4SLinus Torvalds process_rsq(card); 12141da177e4SLinus Torvalds } 12151da177e4SLinus Torvalds 12161da177e4SLinus Torvalds /* Receive Status Queue is 7/8 full */ 1217098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_RSQAF) { 12181da177e4SLinus Torvalds writel(NS_STAT_RSQAF, card->membase + STAT); 12191da177e4SLinus Torvalds RXPRINTK("nicstar%d: RSQ almost full.\n", card->index); 12201da177e4SLinus Torvalds process_rsq(card); 12211da177e4SLinus Torvalds } 12221da177e4SLinus Torvalds 12231da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 12241da177e4SLinus Torvalds PRINTK("nicstar%d: end of interrupt service\n", card->index); 12251da177e4SLinus Torvalds return IRQ_HANDLED; 12261da177e4SLinus Torvalds } 12271da177e4SLinus Torvalds 12281da177e4SLinus Torvalds static int ns_open(struct atm_vcc *vcc) 12291da177e4SLinus Torvalds { 12301da177e4SLinus Torvalds ns_dev *card; 12311da177e4SLinus Torvalds vc_map *vc; 12321da177e4SLinus Torvalds unsigned long tmpl, modl; 12331da177e4SLinus Torvalds int tcr, tcra; /* target cell rate, and absolute value */ 12341da177e4SLinus Torvalds int n = 0; /* Number of entries in the TST. Initialized to remove 12351da177e4SLinus Torvalds the compiler warning. */ 12361da177e4SLinus Torvalds u32 u32d[4]; 12371da177e4SLinus Torvalds int frscdi = 0; /* Index of the SCD. Initialized to remove the compiler 12381da177e4SLinus Torvalds warning. How I wish compilers were clever enough to 12391da177e4SLinus Torvalds tell which variables can truly be used 12401da177e4SLinus Torvalds uninitialized... */ 12411da177e4SLinus Torvalds int inuse; /* tx or rx vc already in use by another vcc */ 12421da177e4SLinus Torvalds short vpi = vcc->vpi; 12431da177e4SLinus Torvalds int vci = vcc->vci; 12441da177e4SLinus Torvalds 12451da177e4SLinus Torvalds card = (ns_dev *) vcc->dev->dev_data; 1246098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: opening vpi.vci %d.%d \n", card->index, (int)vpi, 1247098fde11Schas williams - CONTRACTOR vci); 1248098fde11Schas williams - CONTRACTOR if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { 12491da177e4SLinus Torvalds PRINTK("nicstar%d: unsupported AAL.\n", card->index); 12501da177e4SLinus Torvalds return -EINVAL; 12511da177e4SLinus Torvalds } 12521da177e4SLinus Torvalds 12531da177e4SLinus Torvalds vc = &(card->vcmap[vpi << card->vcibits | vci]); 12541da177e4SLinus Torvalds vcc->dev_data = vc; 12551da177e4SLinus Torvalds 12561da177e4SLinus Torvalds inuse = 0; 12571da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE && vc->tx) 12581da177e4SLinus Torvalds inuse = 1; 12591da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE && vc->rx) 12601da177e4SLinus Torvalds inuse += 2; 1261098fde11Schas williams - CONTRACTOR if (inuse) { 12621da177e4SLinus Torvalds printk("nicstar%d: %s vci already in use.\n", card->index, 12631da177e4SLinus Torvalds inuse == 1 ? "tx" : inuse == 2 ? "rx" : "tx and rx"); 12641da177e4SLinus Torvalds return -EINVAL; 12651da177e4SLinus Torvalds } 12661da177e4SLinus Torvalds 12671da177e4SLinus Torvalds set_bit(ATM_VF_ADDR, &vcc->flags); 12681da177e4SLinus Torvalds 12691da177e4SLinus Torvalds /* NOTE: You are not allowed to modify an open connection's QOS. To change 12701da177e4SLinus Torvalds that, remove the ATM_VF_PARTIAL flag checking. There may be other changes 12711da177e4SLinus Torvalds needed to do that. */ 1272098fde11Schas williams - CONTRACTOR if (!test_bit(ATM_VF_PARTIAL, &vcc->flags)) { 12731da177e4SLinus Torvalds scq_info *scq; 12741da177e4SLinus Torvalds 12751da177e4SLinus Torvalds set_bit(ATM_VF_PARTIAL, &vcc->flags); 1276098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class == ATM_CBR) { 12771da177e4SLinus Torvalds /* Check requested cell rate and availability of SCD */ 1278098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.max_pcr == 0 && vcc->qos.txtp.pcr == 0 1279098fde11Schas williams - CONTRACTOR && vcc->qos.txtp.min_pcr == 0) { 1280098fde11Schas williams - CONTRACTOR PRINTK 1281098fde11Schas williams - CONTRACTOR ("nicstar%d: trying to open a CBR vc with cell rate = 0 \n", 12821da177e4SLinus Torvalds card->index); 12831da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 12841da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 12851da177e4SLinus Torvalds return -EINVAL; 12861da177e4SLinus Torvalds } 12871da177e4SLinus Torvalds 12881da177e4SLinus Torvalds tcr = atm_pcr_goal(&(vcc->qos.txtp)); 12891da177e4SLinus Torvalds tcra = tcr >= 0 ? tcr : -tcr; 12901da177e4SLinus Torvalds 1291098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: target cell rate = %d.\n", 1292098fde11Schas williams - CONTRACTOR card->index, vcc->qos.txtp.max_pcr); 12931da177e4SLinus Torvalds 1294098fde11Schas williams - CONTRACTOR tmpl = 1295098fde11Schas williams - CONTRACTOR (unsigned long)tcra *(unsigned long) 1296098fde11Schas williams - CONTRACTOR NS_TST_NUM_ENTRIES; 12971da177e4SLinus Torvalds modl = tmpl % card->max_pcr; 12981da177e4SLinus Torvalds 12991da177e4SLinus Torvalds n = (int)(tmpl / card->max_pcr); 1300098fde11Schas williams - CONTRACTOR if (tcr > 0) { 1301098fde11Schas williams - CONTRACTOR if (modl > 0) 1302098fde11Schas williams - CONTRACTOR n++; 1303098fde11Schas williams - CONTRACTOR } else if (tcr == 0) { 1304098fde11Schas williams - CONTRACTOR if ((n = 1305098fde11Schas williams - CONTRACTOR (card->tst_free_entries - 1306098fde11Schas williams - CONTRACTOR NS_TST_RESERVED)) <= 0) { 1307098fde11Schas williams - CONTRACTOR PRINTK 1308098fde11Schas williams - CONTRACTOR ("nicstar%d: no CBR bandwidth free.\n", 1309098fde11Schas williams - CONTRACTOR card->index); 13101da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 13111da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 13121da177e4SLinus Torvalds return -EINVAL; 13131da177e4SLinus Torvalds } 13141da177e4SLinus Torvalds } 13151da177e4SLinus Torvalds 1316098fde11Schas williams - CONTRACTOR if (n == 0) { 1317098fde11Schas williams - CONTRACTOR printk 1318098fde11Schas williams - CONTRACTOR ("nicstar%d: selected bandwidth < granularity.\n", 1319098fde11Schas williams - CONTRACTOR card->index); 13201da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 13211da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 13221da177e4SLinus Torvalds return -EINVAL; 13231da177e4SLinus Torvalds } 13241da177e4SLinus Torvalds 1325098fde11Schas williams - CONTRACTOR if (n > (card->tst_free_entries - NS_TST_RESERVED)) { 1326098fde11Schas williams - CONTRACTOR PRINTK 1327098fde11Schas williams - CONTRACTOR ("nicstar%d: not enough free CBR bandwidth.\n", 1328098fde11Schas williams - CONTRACTOR card->index); 13291da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 13301da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 13311da177e4SLinus Torvalds return -EINVAL; 1332098fde11Schas williams - CONTRACTOR } else 13331da177e4SLinus Torvalds card->tst_free_entries -= n; 13341da177e4SLinus Torvalds 1335098fde11Schas williams - CONTRACTOR XPRINTK("nicstar%d: writing %d tst entries.\n", 1336098fde11Schas williams - CONTRACTOR card->index, n); 1337098fde11Schas williams - CONTRACTOR for (frscdi = 0; frscdi < NS_FRSCD_NUM; frscdi++) { 1338098fde11Schas williams - CONTRACTOR if (card->scd2vc[frscdi] == NULL) { 13391da177e4SLinus Torvalds card->scd2vc[frscdi] = vc; 13401da177e4SLinus Torvalds break; 13411da177e4SLinus Torvalds } 13421da177e4SLinus Torvalds } 1343098fde11Schas williams - CONTRACTOR if (frscdi == NS_FRSCD_NUM) { 1344098fde11Schas williams - CONTRACTOR PRINTK 1345098fde11Schas williams - CONTRACTOR ("nicstar%d: no SCD available for CBR channel.\n", 1346098fde11Schas williams - CONTRACTOR card->index); 13471da177e4SLinus Torvalds card->tst_free_entries += n; 13481da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 13491da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 13501da177e4SLinus Torvalds return -EBUSY; 13511da177e4SLinus Torvalds } 13521da177e4SLinus Torvalds 13531da177e4SLinus Torvalds vc->cbr_scd = NS_FRSCD + frscdi * NS_FRSCD_SIZE; 13541da177e4SLinus Torvalds 1355864a3ff6Schas williams - CONTRACTOR scq = get_scq(card, CBR_SCQSIZE, vc->cbr_scd); 1356098fde11Schas williams - CONTRACTOR if (scq == NULL) { 1357098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: can't get fixed rate SCQ.\n", 1358098fde11Schas williams - CONTRACTOR card->index); 13591da177e4SLinus Torvalds card->scd2vc[frscdi] = NULL; 13601da177e4SLinus Torvalds card->tst_free_entries += n; 13611da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 13621da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 13631da177e4SLinus Torvalds return -ENOMEM; 13641da177e4SLinus Torvalds } 13651da177e4SLinus Torvalds vc->scq = scq; 1366864a3ff6Schas williams - CONTRACTOR u32d[0] = scq_virt_to_bus(scq, scq->base); 13671da177e4SLinus Torvalds u32d[1] = (u32) 0x00000000; 13681da177e4SLinus Torvalds u32d[2] = (u32) 0xffffffff; 13691da177e4SLinus Torvalds u32d[3] = (u32) 0x00000000; 13701da177e4SLinus Torvalds ns_write_sram(card, vc->cbr_scd, u32d, 4); 13711da177e4SLinus Torvalds 13721da177e4SLinus Torvalds fill_tst(card, n, vc); 1373098fde11Schas williams - CONTRACTOR } else if (vcc->qos.txtp.traffic_class == ATM_UBR) { 13741da177e4SLinus Torvalds vc->cbr_scd = 0x00000000; 13751da177e4SLinus Torvalds vc->scq = card->scq0; 13761da177e4SLinus Torvalds } 13771da177e4SLinus Torvalds 1378098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class != ATM_NONE) { 13791da177e4SLinus Torvalds vc->tx = 1; 13801da177e4SLinus Torvalds vc->tx_vcc = vcc; 13811da177e4SLinus Torvalds vc->tbd_count = 0; 13821da177e4SLinus Torvalds } 1383098fde11Schas williams - CONTRACTOR if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 13841da177e4SLinus Torvalds u32 status; 13851da177e4SLinus Torvalds 13861da177e4SLinus Torvalds vc->rx = 1; 13871da177e4SLinus Torvalds vc->rx_vcc = vcc; 13881da177e4SLinus Torvalds vc->rx_iov = NULL; 13891da177e4SLinus Torvalds 13901da177e4SLinus Torvalds /* Open the connection in hardware */ 13911da177e4SLinus Torvalds if (vcc->qos.aal == ATM_AAL5) 13921da177e4SLinus Torvalds status = NS_RCTE_AAL5 | NS_RCTE_CONNECTOPEN; 13931da177e4SLinus Torvalds else /* vcc->qos.aal == ATM_AAL0 */ 13941da177e4SLinus Torvalds status = NS_RCTE_AAL0 | NS_RCTE_CONNECTOPEN; 13951da177e4SLinus Torvalds #ifdef RCQ_SUPPORT 13961da177e4SLinus Torvalds status |= NS_RCTE_RAWCELLINTEN; 13971da177e4SLinus Torvalds #endif /* RCQ_SUPPORT */ 1398098fde11Schas williams - CONTRACTOR ns_write_sram(card, 1399098fde11Schas williams - CONTRACTOR NS_RCT + 1400098fde11Schas williams - CONTRACTOR (vpi << card->vcibits | vci) * 14011da177e4SLinus Torvalds NS_RCT_ENTRY_SIZE, &status, 1); 14021da177e4SLinus Torvalds } 14031da177e4SLinus Torvalds 14041da177e4SLinus Torvalds } 14051da177e4SLinus Torvalds 14061da177e4SLinus Torvalds set_bit(ATM_VF_READY, &vcc->flags); 14071da177e4SLinus Torvalds return 0; 14081da177e4SLinus Torvalds } 14091da177e4SLinus Torvalds 14101da177e4SLinus Torvalds static void ns_close(struct atm_vcc *vcc) 14111da177e4SLinus Torvalds { 14121da177e4SLinus Torvalds vc_map *vc; 14131da177e4SLinus Torvalds ns_dev *card; 14141da177e4SLinus Torvalds u32 data; 14151da177e4SLinus Torvalds int i; 14161da177e4SLinus Torvalds 14171da177e4SLinus Torvalds vc = vcc->dev_data; 14181da177e4SLinus Torvalds card = vcc->dev->dev_data; 14191da177e4SLinus Torvalds PRINTK("nicstar%d: closing vpi.vci %d.%d \n", card->index, 14201da177e4SLinus Torvalds (int)vcc->vpi, vcc->vci); 14211da177e4SLinus Torvalds 14221da177e4SLinus Torvalds clear_bit(ATM_VF_READY, &vcc->flags); 14231da177e4SLinus Torvalds 1424098fde11Schas williams - CONTRACTOR if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 14251da177e4SLinus Torvalds u32 addr; 14261da177e4SLinus Torvalds unsigned long flags; 14271da177e4SLinus Torvalds 1428098fde11Schas williams - CONTRACTOR addr = 1429098fde11Schas williams - CONTRACTOR NS_RCT + 1430098fde11Schas williams - CONTRACTOR (vcc->vpi << card->vcibits | vcc->vci) * NS_RCT_ENTRY_SIZE; 143136ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags); 14321da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 1433098fde11Schas williams - CONTRACTOR writel(NS_CMD_CLOSE_CONNECTION | addr << 2, 1434098fde11Schas williams - CONTRACTOR card->membase + CMD); 14351da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags); 14361da177e4SLinus Torvalds 14371da177e4SLinus Torvalds vc->rx = 0; 1438098fde11Schas williams - CONTRACTOR if (vc->rx_iov != NULL) { 14391da177e4SLinus Torvalds struct sk_buff *iovb; 14401da177e4SLinus Torvalds u32 stat; 14411da177e4SLinus Torvalds 14421da177e4SLinus Torvalds stat = readl(card->membase + STAT); 14431da177e4SLinus Torvalds card->sbfqc = ns_stat_sfbqc_get(stat); 14441da177e4SLinus Torvalds card->lbfqc = ns_stat_lfbqc_get(stat); 14451da177e4SLinus Torvalds 1446098fde11Schas williams - CONTRACTOR PRINTK 1447098fde11Schas williams - CONTRACTOR ("nicstar%d: closing a VC with pending rx buffers.\n", 14481da177e4SLinus Torvalds card->index); 14491da177e4SLinus Torvalds iovb = vc->rx_iov; 14501da177e4SLinus Torvalds recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, 1451864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb)); 1452864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb) = 0; 145336ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 14541da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 14551da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 14561da177e4SLinus Torvalds vc->rx_iov = NULL; 14571da177e4SLinus Torvalds } 14581da177e4SLinus Torvalds } 14591da177e4SLinus Torvalds 1460098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class != ATM_NONE) { 14611da177e4SLinus Torvalds vc->tx = 0; 14621da177e4SLinus Torvalds } 14631da177e4SLinus Torvalds 1464098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class == ATM_CBR) { 14651da177e4SLinus Torvalds unsigned long flags; 14661da177e4SLinus Torvalds ns_scqe *scqep; 14671da177e4SLinus Torvalds scq_info *scq; 14681da177e4SLinus Torvalds 14691da177e4SLinus Torvalds scq = vc->scq; 14701da177e4SLinus Torvalds 1471098fde11Schas williams - CONTRACTOR for (;;) { 147236ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags); 14731da177e4SLinus Torvalds scqep = scq->next; 14741da177e4SLinus Torvalds if (scqep == scq->base) 14751da177e4SLinus Torvalds scqep = scq->last; 14761da177e4SLinus Torvalds else 14771da177e4SLinus Torvalds scqep--; 1478098fde11Schas williams - CONTRACTOR if (scqep == scq->tail) { 14791da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 14801da177e4SLinus Torvalds break; 14811da177e4SLinus Torvalds } 14821da177e4SLinus Torvalds /* If the last entry is not a TSR, place one in the SCQ in order to 14831da177e4SLinus Torvalds be able to completely drain it and then close. */ 1484098fde11Schas williams - CONTRACTOR if (!ns_scqe_is_tsr(scqep) && scq->tail != scq->next) { 14851da177e4SLinus Torvalds ns_scqe tsr; 14861da177e4SLinus Torvalds u32 scdi, scqi; 14871da177e4SLinus Torvalds u32 data; 14881da177e4SLinus Torvalds int index; 14891da177e4SLinus Torvalds 14901da177e4SLinus Torvalds tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE); 14911da177e4SLinus Torvalds scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE; 14921da177e4SLinus Torvalds scqi = scq->next - scq->base; 14931da177e4SLinus Torvalds tsr.word_2 = ns_tsr_mkword_2(scdi, scqi); 14941da177e4SLinus Torvalds tsr.word_3 = 0x00000000; 14951da177e4SLinus Torvalds tsr.word_4 = 0x00000000; 14961da177e4SLinus Torvalds *scq->next = tsr; 14971da177e4SLinus Torvalds index = (int)scqi; 14981da177e4SLinus Torvalds scq->skb[index] = NULL; 14991da177e4SLinus Torvalds if (scq->next == scq->last) 15001da177e4SLinus Torvalds scq->next = scq->base; 15011da177e4SLinus Torvalds else 15021da177e4SLinus Torvalds scq->next++; 1503864a3ff6Schas williams - CONTRACTOR data = scq_virt_to_bus(scq, scq->next); 15041da177e4SLinus Torvalds ns_write_sram(card, scq->scd, &data, 1); 15051da177e4SLinus Torvalds } 15061da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 15071da177e4SLinus Torvalds schedule(); 15081da177e4SLinus Torvalds } 15091da177e4SLinus Torvalds 15101da177e4SLinus Torvalds /* Free all TST entries */ 15111da177e4SLinus Torvalds data = NS_TST_OPCODE_VARIABLE; 1512098fde11Schas williams - CONTRACTOR for (i = 0; i < NS_TST_NUM_ENTRIES; i++) { 1513098fde11Schas williams - CONTRACTOR if (card->tste2vc[i] == vc) { 1514098fde11Schas williams - CONTRACTOR ns_write_sram(card, card->tst_addr + i, &data, 1515098fde11Schas williams - CONTRACTOR 1); 15161da177e4SLinus Torvalds card->tste2vc[i] = NULL; 15171da177e4SLinus Torvalds card->tst_free_entries++; 15181da177e4SLinus Torvalds } 15191da177e4SLinus Torvalds } 15201da177e4SLinus Torvalds 15211da177e4SLinus Torvalds card->scd2vc[(vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE] = NULL; 1522864a3ff6Schas williams - CONTRACTOR free_scq(card, vc->scq, vcc); 15231da177e4SLinus Torvalds } 15241da177e4SLinus Torvalds 15251da177e4SLinus Torvalds /* remove all references to vcc before deleting it */ 1526098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class != ATM_NONE) { 15271da177e4SLinus Torvalds unsigned long flags; 15281da177e4SLinus Torvalds scq_info *scq = card->scq0; 15291da177e4SLinus Torvalds 153036ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags); 15311da177e4SLinus Torvalds 15321da177e4SLinus Torvalds for (i = 0; i < scq->num_entries; i++) { 15331da177e4SLinus Torvalds if (scq->skb[i] && ATM_SKB(scq->skb[i])->vcc == vcc) { 15341da177e4SLinus Torvalds ATM_SKB(scq->skb[i])->vcc = NULL; 15351da177e4SLinus Torvalds atm_return(vcc, scq->skb[i]->truesize); 1536098fde11Schas williams - CONTRACTOR PRINTK 1537098fde11Schas williams - CONTRACTOR ("nicstar: deleted pending vcc mapping\n"); 15381da177e4SLinus Torvalds } 15391da177e4SLinus Torvalds } 15401da177e4SLinus Torvalds 15411da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 15421da177e4SLinus Torvalds } 15431da177e4SLinus Torvalds 15441da177e4SLinus Torvalds vcc->dev_data = NULL; 15451da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags); 15461da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 15471da177e4SLinus Torvalds 15481da177e4SLinus Torvalds #ifdef RX_DEBUG 15491da177e4SLinus Torvalds { 15501da177e4SLinus Torvalds u32 stat, cfg; 15511da177e4SLinus Torvalds stat = readl(card->membase + STAT); 15521da177e4SLinus Torvalds cfg = readl(card->membase + CFG); 15531da177e4SLinus Torvalds printk("STAT = 0x%08X CFG = 0x%08X \n", stat, cfg); 1554098fde11Schas williams - CONTRACTOR printk 1555864a3ff6Schas williams - CONTRACTOR ("TSQ: base = 0x%p next = 0x%p last = 0x%p TSQT = 0x%08X \n", 1556864a3ff6Schas williams - CONTRACTOR card->tsq.base, card->tsq.next, 1557864a3ff6Schas williams - CONTRACTOR card->tsq.last, readl(card->membase + TSQT)); 1558098fde11Schas williams - CONTRACTOR printk 1559864a3ff6Schas williams - CONTRACTOR ("RSQ: base = 0x%p next = 0x%p last = 0x%p RSQT = 0x%08X \n", 1560864a3ff6Schas williams - CONTRACTOR card->rsq.base, card->rsq.next, 1561864a3ff6Schas williams - CONTRACTOR card->rsq.last, readl(card->membase + RSQT)); 15621da177e4SLinus Torvalds printk("Empty free buffer queue interrupt %s \n", 15631da177e4SLinus Torvalds card->efbie ? "enabled" : "disabled"); 15641da177e4SLinus Torvalds printk("SBCNT = %d count = %d LBCNT = %d count = %d \n", 15651da177e4SLinus Torvalds ns_stat_sfbqc_get(stat), card->sbpool.count, 15661da177e4SLinus Torvalds ns_stat_lfbqc_get(stat), card->lbpool.count); 15671da177e4SLinus Torvalds printk("hbpool.count = %d iovpool.count = %d \n", 15681da177e4SLinus Torvalds card->hbpool.count, card->iovpool.count); 15691da177e4SLinus Torvalds } 15701da177e4SLinus Torvalds #endif /* RX_DEBUG */ 15711da177e4SLinus Torvalds } 15721da177e4SLinus Torvalds 15731da177e4SLinus Torvalds static void fill_tst(ns_dev * card, int n, vc_map * vc) 15741da177e4SLinus Torvalds { 15751da177e4SLinus Torvalds u32 new_tst; 15761da177e4SLinus Torvalds unsigned long cl; 15771da177e4SLinus Torvalds int e, r; 15781da177e4SLinus Torvalds u32 data; 15791da177e4SLinus Torvalds 15801da177e4SLinus Torvalds /* It would be very complicated to keep the two TSTs synchronized while 15811da177e4SLinus Torvalds assuring that writes are only made to the inactive TST. So, for now I 15821da177e4SLinus Torvalds will use only one TST. If problems occur, I will change this again */ 15831da177e4SLinus Torvalds 15841da177e4SLinus Torvalds new_tst = card->tst_addr; 15851da177e4SLinus Torvalds 15861da177e4SLinus Torvalds /* Fill procedure */ 15871da177e4SLinus Torvalds 1588098fde11Schas williams - CONTRACTOR for (e = 0; e < NS_TST_NUM_ENTRIES; e++) { 15891da177e4SLinus Torvalds if (card->tste2vc[e] == NULL) 15901da177e4SLinus Torvalds break; 15911da177e4SLinus Torvalds } 15921da177e4SLinus Torvalds if (e == NS_TST_NUM_ENTRIES) { 15931da177e4SLinus Torvalds printk("nicstar%d: No free TST entries found. \n", card->index); 15941da177e4SLinus Torvalds return; 15951da177e4SLinus Torvalds } 15961da177e4SLinus Torvalds 15971da177e4SLinus Torvalds r = n; 15981da177e4SLinus Torvalds cl = NS_TST_NUM_ENTRIES; 15991da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_FIXED, vc->cbr_scd); 16001da177e4SLinus Torvalds 1601098fde11Schas williams - CONTRACTOR while (r > 0) { 1602098fde11Schas williams - CONTRACTOR if (cl >= NS_TST_NUM_ENTRIES && card->tste2vc[e] == NULL) { 16031da177e4SLinus Torvalds card->tste2vc[e] = vc; 16041da177e4SLinus Torvalds ns_write_sram(card, new_tst + e, &data, 1); 16051da177e4SLinus Torvalds cl -= NS_TST_NUM_ENTRIES; 16061da177e4SLinus Torvalds r--; 16071da177e4SLinus Torvalds } 16081da177e4SLinus Torvalds 16091da177e4SLinus Torvalds if (++e == NS_TST_NUM_ENTRIES) { 16101da177e4SLinus Torvalds e = 0; 16111da177e4SLinus Torvalds } 16121da177e4SLinus Torvalds cl += n; 16131da177e4SLinus Torvalds } 16141da177e4SLinus Torvalds 16151da177e4SLinus Torvalds /* End of fill procedure */ 16161da177e4SLinus Torvalds 16171da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_END, new_tst); 16181da177e4SLinus Torvalds ns_write_sram(card, new_tst + NS_TST_NUM_ENTRIES, &data, 1); 16191da177e4SLinus Torvalds ns_write_sram(card, card->tst_addr + NS_TST_NUM_ENTRIES, &data, 1); 16201da177e4SLinus Torvalds card->tst_addr = new_tst; 16211da177e4SLinus Torvalds } 16221da177e4SLinus Torvalds 16231da177e4SLinus Torvalds static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) 16241da177e4SLinus Torvalds { 16251da177e4SLinus Torvalds ns_dev *card; 16261da177e4SLinus Torvalds vc_map *vc; 16271da177e4SLinus Torvalds scq_info *scq; 16281da177e4SLinus Torvalds unsigned long buflen; 16291da177e4SLinus Torvalds ns_scqe scqe; 16301da177e4SLinus Torvalds u32 flags; /* TBD flags, not CPU flags */ 16311da177e4SLinus Torvalds 16321da177e4SLinus Torvalds card = vcc->dev->dev_data; 16331da177e4SLinus Torvalds TXPRINTK("nicstar%d: ns_send() called.\n", card->index); 1634098fde11Schas williams - CONTRACTOR if ((vc = (vc_map *) vcc->dev_data) == NULL) { 1635098fde11Schas williams - CONTRACTOR printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n", 1636098fde11Schas williams - CONTRACTOR card->index); 16371da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 16381da177e4SLinus Torvalds dev_kfree_skb_any(skb); 16391da177e4SLinus Torvalds return -EINVAL; 16401da177e4SLinus Torvalds } 16411da177e4SLinus Torvalds 1642098fde11Schas williams - CONTRACTOR if (!vc->tx) { 1643098fde11Schas williams - CONTRACTOR printk("nicstar%d: Trying to transmit on a non-tx VC.\n", 1644098fde11Schas williams - CONTRACTOR card->index); 16451da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 16461da177e4SLinus Torvalds dev_kfree_skb_any(skb); 16471da177e4SLinus Torvalds return -EINVAL; 16481da177e4SLinus Torvalds } 16491da177e4SLinus Torvalds 1650098fde11Schas williams - CONTRACTOR if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) { 1651098fde11Schas williams - CONTRACTOR printk("nicstar%d: Only AAL0 and AAL5 are supported.\n", 1652098fde11Schas williams - CONTRACTOR card->index); 16531da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 16541da177e4SLinus Torvalds dev_kfree_skb_any(skb); 16551da177e4SLinus Torvalds return -EINVAL; 16561da177e4SLinus Torvalds } 16571da177e4SLinus Torvalds 1658098fde11Schas williams - CONTRACTOR if (skb_shinfo(skb)->nr_frags != 0) { 16591da177e4SLinus Torvalds printk("nicstar%d: No scatter-gather yet.\n", card->index); 16601da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 16611da177e4SLinus Torvalds dev_kfree_skb_any(skb); 16621da177e4SLinus Torvalds return -EINVAL; 16631da177e4SLinus Torvalds } 16641da177e4SLinus Torvalds 16651da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 16661da177e4SLinus Torvalds 1667ede58ef2Schas williams - CONTRACTOR NS_PRV_DMA(skb) = dma_map_single(&card->pcidev->dev, skb->data, 1668ede58ef2Schas williams - CONTRACTOR skb->len, DMA_TO_DEVICE); 1669864a3ff6Schas williams - CONTRACTOR 1670098fde11Schas williams - CONTRACTOR if (vcc->qos.aal == ATM_AAL5) { 16711da177e4SLinus Torvalds buflen = (skb->len + 47 + 8) / 48 * 48; /* Multiple of 48 */ 16721da177e4SLinus Torvalds flags = NS_TBD_AAL5; 1673864a3ff6Schas williams - CONTRACTOR scqe.word_2 = cpu_to_le32(NS_PRV_DMA(skb)); 1674864a3ff6Schas williams - CONTRACTOR scqe.word_3 = cpu_to_le32(skb->len); 1675098fde11Schas williams - CONTRACTOR scqe.word_4 = 1676098fde11Schas williams - CONTRACTOR ns_tbd_mkword_4(0, (u32) vcc->vpi, (u32) vcc->vci, 0, 1677098fde11Schas williams - CONTRACTOR ATM_SKB(skb)-> 1678098fde11Schas williams - CONTRACTOR atm_options & ATM_ATMOPT_CLP ? 1 : 0); 16791da177e4SLinus Torvalds flags |= NS_TBD_EOPDU; 1680098fde11Schas williams - CONTRACTOR } else { /* (vcc->qos.aal == ATM_AAL0) */ 1681098fde11Schas williams - CONTRACTOR 16821da177e4SLinus Torvalds buflen = ATM_CELL_PAYLOAD; /* i.e., 48 bytes */ 16831da177e4SLinus Torvalds flags = NS_TBD_AAL0; 1684864a3ff6Schas williams - CONTRACTOR scqe.word_2 = cpu_to_le32(NS_PRV_DMA(skb) + NS_AAL0_HEADER); 16851da177e4SLinus Torvalds scqe.word_3 = cpu_to_le32(0x00000000); 16861da177e4SLinus Torvalds if (*skb->data & 0x02) /* Payload type 1 - end of pdu */ 16871da177e4SLinus Torvalds flags |= NS_TBD_EOPDU; 1688098fde11Schas williams - CONTRACTOR scqe.word_4 = 1689098fde11Schas williams - CONTRACTOR cpu_to_le32(*((u32 *) skb->data) & ~NS_TBD_VC_MASK); 16901da177e4SLinus Torvalds /* Force the VPI/VCI to be the same as in VCC struct */ 1691098fde11Schas williams - CONTRACTOR scqe.word_4 |= 1692098fde11Schas williams - CONTRACTOR cpu_to_le32((((u32) vcc-> 1693098fde11Schas williams - CONTRACTOR vpi) << NS_TBD_VPI_SHIFT | ((u32) vcc-> 1694098fde11Schas williams - CONTRACTOR vci) << 1695098fde11Schas williams - CONTRACTOR NS_TBD_VCI_SHIFT) & NS_TBD_VC_MASK); 16961da177e4SLinus Torvalds } 16971da177e4SLinus Torvalds 1698098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class == ATM_CBR) { 16991da177e4SLinus Torvalds scqe.word_1 = ns_tbd_mkword_1_novbr(flags, (u32) buflen); 17001da177e4SLinus Torvalds scq = ((vc_map *) vcc->dev_data)->scq; 1701098fde11Schas williams - CONTRACTOR } else { 1702098fde11Schas williams - CONTRACTOR scqe.word_1 = 1703098fde11Schas williams - CONTRACTOR ns_tbd_mkword_1(flags, (u32) 1, (u32) 1, (u32) buflen); 17041da177e4SLinus Torvalds scq = card->scq0; 17051da177e4SLinus Torvalds } 17061da177e4SLinus Torvalds 1707098fde11Schas williams - CONTRACTOR if (push_scqe(card, vc, scq, &scqe, skb) != 0) { 17081da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 17091da177e4SLinus Torvalds dev_kfree_skb_any(skb); 17101da177e4SLinus Torvalds return -EIO; 17111da177e4SLinus Torvalds } 17121da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx); 17131da177e4SLinus Torvalds 17141da177e4SLinus Torvalds return 0; 17151da177e4SLinus Torvalds } 17161da177e4SLinus Torvalds 17171da177e4SLinus Torvalds static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd, 17181da177e4SLinus Torvalds struct sk_buff *skb) 17191da177e4SLinus Torvalds { 17201da177e4SLinus Torvalds unsigned long flags; 17211da177e4SLinus Torvalds ns_scqe tsr; 17221da177e4SLinus Torvalds u32 scdi, scqi; 17231da177e4SLinus Torvalds int scq_is_vbr; 17241da177e4SLinus Torvalds u32 data; 17251da177e4SLinus Torvalds int index; 17261da177e4SLinus Torvalds 172736ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags); 1728098fde11Schas williams - CONTRACTOR while (scq->tail == scq->next) { 17291da177e4SLinus Torvalds if (in_interrupt()) { 17301da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 17311da177e4SLinus Torvalds printk("nicstar%d: Error pushing TBD.\n", card->index); 17321da177e4SLinus Torvalds return 1; 17331da177e4SLinus Torvalds } 17341da177e4SLinus Torvalds 17351da177e4SLinus Torvalds scq->full = 1; 1736118ce7abSArnd Bergmann wait_event_interruptible_lock_irq_timeout(scq->scqfull_waitq, 1737118ce7abSArnd Bergmann scq->tail != scq->next, 1738118ce7abSArnd Bergmann scq->lock, 1739098fde11Schas williams - CONTRACTOR SCQFULL_TIMEOUT); 17401da177e4SLinus Torvalds 17411da177e4SLinus Torvalds if (scq->full) { 17421da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 1743098fde11Schas williams - CONTRACTOR printk("nicstar%d: Timeout pushing TBD.\n", 1744098fde11Schas williams - CONTRACTOR card->index); 17451da177e4SLinus Torvalds return 1; 17461da177e4SLinus Torvalds } 17471da177e4SLinus Torvalds } 17481da177e4SLinus Torvalds *scq->next = *tbd; 17491da177e4SLinus Torvalds index = (int)(scq->next - scq->base); 17501da177e4SLinus Torvalds scq->skb[index] = skb; 1751864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: sending skb at 0x%p (pos %d).\n", 1752864a3ff6Schas williams - CONTRACTOR card->index, skb, index); 1753864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: TBD written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%p.\n", 17541da177e4SLinus Torvalds card->index, le32_to_cpu(tbd->word_1), le32_to_cpu(tbd->word_2), 17551da177e4SLinus Torvalds le32_to_cpu(tbd->word_3), le32_to_cpu(tbd->word_4), 1756864a3ff6Schas williams - CONTRACTOR scq->next); 17571da177e4SLinus Torvalds if (scq->next == scq->last) 17581da177e4SLinus Torvalds scq->next = scq->base; 17591da177e4SLinus Torvalds else 17601da177e4SLinus Torvalds scq->next++; 17611da177e4SLinus Torvalds 17621da177e4SLinus Torvalds vc->tbd_count++; 1763098fde11Schas williams - CONTRACTOR if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) { 17641da177e4SLinus Torvalds scq->tbd_count++; 17651da177e4SLinus Torvalds scq_is_vbr = 1; 1766098fde11Schas williams - CONTRACTOR } else 17671da177e4SLinus Torvalds scq_is_vbr = 0; 17681da177e4SLinus Torvalds 1769098fde11Schas williams - CONTRACTOR if (vc->tbd_count >= MAX_TBD_PER_VC 1770098fde11Schas williams - CONTRACTOR || scq->tbd_count >= MAX_TBD_PER_SCQ) { 17711da177e4SLinus Torvalds int has_run = 0; 17721da177e4SLinus Torvalds 1773098fde11Schas williams - CONTRACTOR while (scq->tail == scq->next) { 17741da177e4SLinus Torvalds if (in_interrupt()) { 1775864a3ff6Schas williams - CONTRACTOR data = scq_virt_to_bus(scq, scq->next); 17761da177e4SLinus Torvalds ns_write_sram(card, scq->scd, &data, 1); 17771da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 1778098fde11Schas williams - CONTRACTOR printk("nicstar%d: Error pushing TSR.\n", 1779098fde11Schas williams - CONTRACTOR card->index); 17801da177e4SLinus Torvalds return 0; 17811da177e4SLinus Torvalds } 17821da177e4SLinus Torvalds 17831da177e4SLinus Torvalds scq->full = 1; 1784098fde11Schas williams - CONTRACTOR if (has_run++) 1785098fde11Schas williams - CONTRACTOR break; 1786118ce7abSArnd Bergmann wait_event_interruptible_lock_irq_timeout(scq->scqfull_waitq, 1787118ce7abSArnd Bergmann scq->tail != scq->next, 1788118ce7abSArnd Bergmann scq->lock, 1789098fde11Schas williams - CONTRACTOR SCQFULL_TIMEOUT); 17901da177e4SLinus Torvalds } 17911da177e4SLinus Torvalds 1792098fde11Schas williams - CONTRACTOR if (!scq->full) { 17931da177e4SLinus Torvalds tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE); 17941da177e4SLinus Torvalds if (scq_is_vbr) 17951da177e4SLinus Torvalds scdi = NS_TSR_SCDISVBR; 17961da177e4SLinus Torvalds else 17971da177e4SLinus Torvalds scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE; 17981da177e4SLinus Torvalds scqi = scq->next - scq->base; 17991da177e4SLinus Torvalds tsr.word_2 = ns_tsr_mkword_2(scdi, scqi); 18001da177e4SLinus Torvalds tsr.word_3 = 0x00000000; 18011da177e4SLinus Torvalds tsr.word_4 = 0x00000000; 18021da177e4SLinus Torvalds 18031da177e4SLinus Torvalds *scq->next = tsr; 18041da177e4SLinus Torvalds index = (int)scqi; 18051da177e4SLinus Torvalds scq->skb[index] = NULL; 1806098fde11Schas williams - CONTRACTOR XPRINTK 1807864a3ff6Schas williams - CONTRACTOR ("nicstar%d: TSR written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%p.\n", 1808098fde11Schas williams - CONTRACTOR card->index, le32_to_cpu(tsr.word_1), 1809098fde11Schas williams - CONTRACTOR le32_to_cpu(tsr.word_2), le32_to_cpu(tsr.word_3), 1810864a3ff6Schas williams - CONTRACTOR le32_to_cpu(tsr.word_4), scq->next); 18111da177e4SLinus Torvalds if (scq->next == scq->last) 18121da177e4SLinus Torvalds scq->next = scq->base; 18131da177e4SLinus Torvalds else 18141da177e4SLinus Torvalds scq->next++; 18151da177e4SLinus Torvalds vc->tbd_count = 0; 18161da177e4SLinus Torvalds scq->tbd_count = 0; 1817098fde11Schas williams - CONTRACTOR } else 1818098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: Timeout pushing TSR.\n", 1819098fde11Schas williams - CONTRACTOR card->index); 18201da177e4SLinus Torvalds } 1821864a3ff6Schas williams - CONTRACTOR data = scq_virt_to_bus(scq, scq->next); 18221da177e4SLinus Torvalds ns_write_sram(card, scq->scd, &data, 1); 18231da177e4SLinus Torvalds 18241da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 18251da177e4SLinus Torvalds 18261da177e4SLinus Torvalds return 0; 18271da177e4SLinus Torvalds } 18281da177e4SLinus Torvalds 18291da177e4SLinus Torvalds static void process_tsq(ns_dev * card) 18301da177e4SLinus Torvalds { 18311da177e4SLinus Torvalds u32 scdi; 18321da177e4SLinus Torvalds scq_info *scq; 18331da177e4SLinus Torvalds ns_tsi *previous = NULL, *one_ahead, *two_ahead; 18341da177e4SLinus Torvalds int serviced_entries; /* flag indicating at least on entry was serviced */ 18351da177e4SLinus Torvalds 18361da177e4SLinus Torvalds serviced_entries = 0; 18371da177e4SLinus Torvalds 18381da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last) 18391da177e4SLinus Torvalds one_ahead = card->tsq.base; 18401da177e4SLinus Torvalds else 18411da177e4SLinus Torvalds one_ahead = card->tsq.next + 1; 18421da177e4SLinus Torvalds 18431da177e4SLinus Torvalds if (one_ahead == card->tsq.last) 18441da177e4SLinus Torvalds two_ahead = card->tsq.base; 18451da177e4SLinus Torvalds else 18461da177e4SLinus Torvalds two_ahead = one_ahead + 1; 18471da177e4SLinus Torvalds 18481da177e4SLinus Torvalds while (!ns_tsi_isempty(card->tsq.next) || !ns_tsi_isempty(one_ahead) || 18491da177e4SLinus Torvalds !ns_tsi_isempty(two_ahead)) 18501da177e4SLinus Torvalds /* At most two empty, as stated in the 77201 errata */ 18511da177e4SLinus Torvalds { 18521da177e4SLinus Torvalds serviced_entries = 1; 18531da177e4SLinus Torvalds 18541da177e4SLinus Torvalds /* Skip the one or two possible empty entries */ 18551da177e4SLinus Torvalds while (ns_tsi_isempty(card->tsq.next)) { 18561da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last) 18571da177e4SLinus Torvalds card->tsq.next = card->tsq.base; 18581da177e4SLinus Torvalds else 18591da177e4SLinus Torvalds card->tsq.next++; 18601da177e4SLinus Torvalds } 18611da177e4SLinus Torvalds 1862098fde11Schas williams - CONTRACTOR if (!ns_tsi_tmrof(card->tsq.next)) { 18631da177e4SLinus Torvalds scdi = ns_tsi_getscdindex(card->tsq.next); 18641da177e4SLinus Torvalds if (scdi == NS_TSI_SCDISVBR) 18651da177e4SLinus Torvalds scq = card->scq0; 1866098fde11Schas williams - CONTRACTOR else { 1867098fde11Schas williams - CONTRACTOR if (card->scd2vc[scdi] == NULL) { 1868098fde11Schas williams - CONTRACTOR printk 1869098fde11Schas williams - CONTRACTOR ("nicstar%d: could not find VC from SCD index.\n", 18701da177e4SLinus Torvalds card->index); 18711da177e4SLinus Torvalds ns_tsi_init(card->tsq.next); 18721da177e4SLinus Torvalds return; 18731da177e4SLinus Torvalds } 18741da177e4SLinus Torvalds scq = card->scd2vc[scdi]->scq; 18751da177e4SLinus Torvalds } 18761da177e4SLinus Torvalds drain_scq(card, scq, ns_tsi_getscqpos(card->tsq.next)); 18771da177e4SLinus Torvalds scq->full = 0; 18781da177e4SLinus Torvalds wake_up_interruptible(&(scq->scqfull_waitq)); 18791da177e4SLinus Torvalds } 18801da177e4SLinus Torvalds 18811da177e4SLinus Torvalds ns_tsi_init(card->tsq.next); 18821da177e4SLinus Torvalds previous = card->tsq.next; 18831da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last) 18841da177e4SLinus Torvalds card->tsq.next = card->tsq.base; 18851da177e4SLinus Torvalds else 18861da177e4SLinus Torvalds card->tsq.next++; 18871da177e4SLinus Torvalds 18881da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last) 18891da177e4SLinus Torvalds one_ahead = card->tsq.base; 18901da177e4SLinus Torvalds else 18911da177e4SLinus Torvalds one_ahead = card->tsq.next + 1; 18921da177e4SLinus Torvalds 18931da177e4SLinus Torvalds if (one_ahead == card->tsq.last) 18941da177e4SLinus Torvalds two_ahead = card->tsq.base; 18951da177e4SLinus Torvalds else 18961da177e4SLinus Torvalds two_ahead = one_ahead + 1; 18971da177e4SLinus Torvalds } 18981da177e4SLinus Torvalds 1899864a3ff6Schas williams - CONTRACTOR if (serviced_entries) 1900864a3ff6Schas williams - CONTRACTOR writel(PTR_DIFF(previous, card->tsq.base), 19011da177e4SLinus Torvalds card->membase + TSQH); 19021da177e4SLinus Torvalds } 19031da177e4SLinus Torvalds 19041da177e4SLinus Torvalds static void drain_scq(ns_dev * card, scq_info * scq, int pos) 19051da177e4SLinus Torvalds { 19061da177e4SLinus Torvalds struct atm_vcc *vcc; 19071da177e4SLinus Torvalds struct sk_buff *skb; 19081da177e4SLinus Torvalds int i; 19091da177e4SLinus Torvalds unsigned long flags; 19101da177e4SLinus Torvalds 1911864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: drain_scq() called, scq at 0x%p, pos %d.\n", 1912864a3ff6Schas williams - CONTRACTOR card->index, scq, pos); 1913098fde11Schas williams - CONTRACTOR if (pos >= scq->num_entries) { 19141da177e4SLinus Torvalds printk("nicstar%d: Bad index on drain_scq().\n", card->index); 19151da177e4SLinus Torvalds return; 19161da177e4SLinus Torvalds } 19171da177e4SLinus Torvalds 191836ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags); 19191da177e4SLinus Torvalds i = (int)(scq->tail - scq->base); 19201da177e4SLinus Torvalds if (++i == scq->num_entries) 19211da177e4SLinus Torvalds i = 0; 1922098fde11Schas williams - CONTRACTOR while (i != pos) { 19231da177e4SLinus Torvalds skb = scq->skb[i]; 1924864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: freeing skb at 0x%p (index %d).\n", 1925864a3ff6Schas williams - CONTRACTOR card->index, skb, i); 1926098fde11Schas williams - CONTRACTOR if (skb != NULL) { 1927ede58ef2Schas williams - CONTRACTOR dma_unmap_single(&card->pcidev->dev, 1928864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb), 1929864a3ff6Schas williams - CONTRACTOR skb->len, 1930ede58ef2Schas williams - CONTRACTOR DMA_TO_DEVICE); 19311da177e4SLinus Torvalds vcc = ATM_SKB(skb)->vcc; 19321da177e4SLinus Torvalds if (vcc && vcc->pop != NULL) { 19331da177e4SLinus Torvalds vcc->pop(vcc, skb); 19341da177e4SLinus Torvalds } else { 19351da177e4SLinus Torvalds dev_kfree_skb_irq(skb); 19361da177e4SLinus Torvalds } 19371da177e4SLinus Torvalds scq->skb[i] = NULL; 19381da177e4SLinus Torvalds } 19391da177e4SLinus Torvalds if (++i == scq->num_entries) 19401da177e4SLinus Torvalds i = 0; 19411da177e4SLinus Torvalds } 19421da177e4SLinus Torvalds scq->tail = scq->base + pos; 19431da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags); 19441da177e4SLinus Torvalds } 19451da177e4SLinus Torvalds 19461da177e4SLinus Torvalds static void process_rsq(ns_dev * card) 19471da177e4SLinus Torvalds { 19481da177e4SLinus Torvalds ns_rsqe *previous; 19491da177e4SLinus Torvalds 19501da177e4SLinus Torvalds if (!ns_rsqe_valid(card->rsq.next)) 19511da177e4SLinus Torvalds return; 19522087ff3eSDavid Howells do { 19531da177e4SLinus Torvalds dequeue_rx(card, card->rsq.next); 19541da177e4SLinus Torvalds ns_rsqe_init(card->rsq.next); 19551da177e4SLinus Torvalds previous = card->rsq.next; 19561da177e4SLinus Torvalds if (card->rsq.next == card->rsq.last) 19571da177e4SLinus Torvalds card->rsq.next = card->rsq.base; 19581da177e4SLinus Torvalds else 19591da177e4SLinus Torvalds card->rsq.next++; 19602087ff3eSDavid Howells } while (ns_rsqe_valid(card->rsq.next)); 1961864a3ff6Schas williams - CONTRACTOR writel(PTR_DIFF(previous, card->rsq.base), card->membase + RSQH); 19621da177e4SLinus Torvalds } 19631da177e4SLinus Torvalds 19641da177e4SLinus Torvalds static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) 19651da177e4SLinus Torvalds { 19661da177e4SLinus Torvalds u32 vpi, vci; 19671da177e4SLinus Torvalds vc_map *vc; 19681da177e4SLinus Torvalds struct sk_buff *iovb; 19691da177e4SLinus Torvalds struct iovec *iov; 19701da177e4SLinus Torvalds struct atm_vcc *vcc; 19711da177e4SLinus Torvalds struct sk_buff *skb; 19721da177e4SLinus Torvalds unsigned short aal5_len; 19731da177e4SLinus Torvalds int len; 19741da177e4SLinus Torvalds u32 stat; 1975864a3ff6Schas williams - CONTRACTOR u32 id; 19761da177e4SLinus Torvalds 19771da177e4SLinus Torvalds stat = readl(card->membase + STAT); 19781da177e4SLinus Torvalds card->sbfqc = ns_stat_sfbqc_get(stat); 19791da177e4SLinus Torvalds card->lbfqc = ns_stat_lfbqc_get(stat); 19801da177e4SLinus Torvalds 1981864a3ff6Schas williams - CONTRACTOR id = le32_to_cpu(rsqe->buffer_handle); 1982d3e709e6SMatthew Wilcox skb = idr_remove(&card->idr, id); 1983864a3ff6Schas williams - CONTRACTOR if (!skb) { 1984864a3ff6Schas williams - CONTRACTOR RXPRINTK(KERN_ERR 1985d3e709e6SMatthew Wilcox "nicstar%d: skb not found!\n", card->index); 1986864a3ff6Schas williams - CONTRACTOR return; 1987864a3ff6Schas williams - CONTRACTOR } 1988ede58ef2Schas williams - CONTRACTOR dma_sync_single_for_cpu(&card->pcidev->dev, 1989864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb), 1990864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM 1991864a3ff6Schas williams - CONTRACTOR ? NS_SMSKBSIZE : NS_LGSKBSIZE), 1992ede58ef2Schas williams - CONTRACTOR DMA_FROM_DEVICE); 1993ede58ef2Schas williams - CONTRACTOR dma_unmap_single(&card->pcidev->dev, 1994864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb), 1995864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM 1996864a3ff6Schas williams - CONTRACTOR ? NS_SMSKBSIZE : NS_LGSKBSIZE), 1997ede58ef2Schas williams - CONTRACTOR DMA_FROM_DEVICE); 19981da177e4SLinus Torvalds vpi = ns_rsqe_vpi(rsqe); 19991da177e4SLinus Torvalds vci = ns_rsqe_vci(rsqe); 2000098fde11Schas williams - CONTRACTOR if (vpi >= 1UL << card->vpibits || vci >= 1UL << card->vcibits) { 20011da177e4SLinus Torvalds printk("nicstar%d: SDU received for out-of-range vc %d.%d.\n", 20021da177e4SLinus Torvalds card->index, vpi, vci); 20031da177e4SLinus Torvalds recycle_rx_buf(card, skb); 20041da177e4SLinus Torvalds return; 20051da177e4SLinus Torvalds } 20061da177e4SLinus Torvalds 20071da177e4SLinus Torvalds vc = &(card->vcmap[vpi << card->vcibits | vci]); 2008098fde11Schas williams - CONTRACTOR if (!vc->rx) { 20091da177e4SLinus Torvalds RXPRINTK("nicstar%d: SDU received on non-rx vc %d.%d.\n", 20101da177e4SLinus Torvalds card->index, vpi, vci); 20111da177e4SLinus Torvalds recycle_rx_buf(card, skb); 20121da177e4SLinus Torvalds return; 20131da177e4SLinus Torvalds } 20141da177e4SLinus Torvalds 20151da177e4SLinus Torvalds vcc = vc->rx_vcc; 20161da177e4SLinus Torvalds 2017098fde11Schas williams - CONTRACTOR if (vcc->qos.aal == ATM_AAL0) { 20181da177e4SLinus Torvalds struct sk_buff *sb; 20191da177e4SLinus Torvalds unsigned char *cell; 20201da177e4SLinus Torvalds int i; 20211da177e4SLinus Torvalds 20221da177e4SLinus Torvalds cell = skb->data; 2023098fde11Schas williams - CONTRACTOR for (i = ns_rsqe_cellcount(rsqe); i; i--) { 20240ba8abb7SMarkus Elfring sb = dev_alloc_skb(NS_SMSKBSIZE); 20250ba8abb7SMarkus Elfring if (!sb) { 2026098fde11Schas williams - CONTRACTOR printk 2027098fde11Schas williams - CONTRACTOR ("nicstar%d: Can't allocate buffers for aal0.\n", 20281da177e4SLinus Torvalds card->index); 20291da177e4SLinus Torvalds atomic_add(i, &vcc->stats->rx_drop); 20301da177e4SLinus Torvalds break; 20311da177e4SLinus Torvalds } 2032098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, sb->truesize)) { 2033098fde11Schas williams - CONTRACTOR RXPRINTK 2034098fde11Schas williams - CONTRACTOR ("nicstar%d: atm_charge() dropped aal0 packets.\n", 20351da177e4SLinus Torvalds card->index); 20361da177e4SLinus Torvalds atomic_add(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */ 20371da177e4SLinus Torvalds dev_kfree_skb_any(sb); 20381da177e4SLinus Torvalds break; 20391da177e4SLinus Torvalds } 20401da177e4SLinus Torvalds /* Rebuild the header */ 20411da177e4SLinus Torvalds *((u32 *) sb->data) = le32_to_cpu(rsqe->word_1) << 4 | 20421da177e4SLinus Torvalds (ns_rsqe_clp(rsqe) ? 0x00000001 : 0x00000000); 20431da177e4SLinus Torvalds if (i == 1 && ns_rsqe_eopdu(rsqe)) 20441da177e4SLinus Torvalds *((u32 *) sb->data) |= 0x00000002; 20451da177e4SLinus Torvalds skb_put(sb, NS_AAL0_HEADER); 204627a884dcSArnaldo Carvalho de Melo memcpy(skb_tail_pointer(sb), cell, ATM_CELL_PAYLOAD); 20471da177e4SLinus Torvalds skb_put(sb, ATM_CELL_PAYLOAD); 20481da177e4SLinus Torvalds ATM_SKB(sb)->vcc = vcc; 2049a61bbcf2SPatrick McHardy __net_timestamp(sb); 20501da177e4SLinus Torvalds vcc->push(vcc, sb); 20511da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 20521da177e4SLinus Torvalds cell += ATM_CELL_PAYLOAD; 20531da177e4SLinus Torvalds } 20541da177e4SLinus Torvalds 20551da177e4SLinus Torvalds recycle_rx_buf(card, skb); 20561da177e4SLinus Torvalds return; 20571da177e4SLinus Torvalds } 20581da177e4SLinus Torvalds 20591da177e4SLinus Torvalds /* To reach this point, the AAL layer can only be AAL5 */ 20601da177e4SLinus Torvalds 2061098fde11Schas williams - CONTRACTOR if ((iovb = vc->rx_iov) == NULL) { 20621da177e4SLinus Torvalds iovb = skb_dequeue(&(card->iovpool.queue)); 2063098fde11Schas williams - CONTRACTOR if (iovb == NULL) { /* No buffers in the queue */ 20641da177e4SLinus Torvalds iovb = alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC); 2065098fde11Schas williams - CONTRACTOR if (iovb == NULL) { 2066098fde11Schas williams - CONTRACTOR printk("nicstar%d: Out of iovec buffers.\n", 2067098fde11Schas williams - CONTRACTOR card->index); 20681da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 20691da177e4SLinus Torvalds recycle_rx_buf(card, skb); 20701da177e4SLinus Torvalds return; 20711da177e4SLinus Torvalds } 2072864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE; 2073098fde11Schas williams - CONTRACTOR } else if (--card->iovpool.count < card->iovnr.min) { 20741da177e4SLinus Torvalds struct sk_buff *new_iovb; 2075098fde11Schas williams - CONTRACTOR if ((new_iovb = 2076098fde11Schas williams - CONTRACTOR alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC)) != NULL) { 2077864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE; 20781da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, new_iovb); 20791da177e4SLinus Torvalds card->iovpool.count++; 20801da177e4SLinus Torvalds } 20811da177e4SLinus Torvalds } 20821da177e4SLinus Torvalds vc->rx_iov = iovb; 2083864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb) = 0; 20841da177e4SLinus Torvalds iovb->len = 0; 208527a884dcSArnaldo Carvalho de Melo iovb->data = iovb->head; 208627a884dcSArnaldo Carvalho de Melo skb_reset_tail_pointer(iovb); 20871da177e4SLinus Torvalds /* IMPORTANT: a pointer to the sk_buff containing the small or large 20881da177e4SLinus Torvalds buffer is stored as iovec base, NOT a pointer to the 20891da177e4SLinus Torvalds small or large buffer itself. */ 2090864a3ff6Schas williams - CONTRACTOR } else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) { 20911da177e4SLinus Torvalds printk("nicstar%d: received too big AAL5 SDU.\n", card->index); 20921da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 2093098fde11Schas williams - CONTRACTOR recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, 2094098fde11Schas williams - CONTRACTOR NS_MAX_IOVECS); 2095864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb) = 0; 20961da177e4SLinus Torvalds iovb->len = 0; 209727a884dcSArnaldo Carvalho de Melo iovb->data = iovb->head; 209827a884dcSArnaldo Carvalho de Melo skb_reset_tail_pointer(iovb); 20991da177e4SLinus Torvalds } 2100864a3ff6Schas williams - CONTRACTOR iov = &((struct iovec *)iovb->data)[NS_PRV_IOVCNT(iovb)++]; 21011da177e4SLinus Torvalds iov->iov_base = (void *)skb; 21021da177e4SLinus Torvalds iov->iov_len = ns_rsqe_cellcount(rsqe) * 48; 21031da177e4SLinus Torvalds iovb->len += iov->iov_len; 21041da177e4SLinus Torvalds 2105864a3ff6Schas williams - CONTRACTOR #ifdef EXTRA_DEBUG 2106864a3ff6Schas williams - CONTRACTOR if (NS_PRV_IOVCNT(iovb) == 1) { 2107864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) != BUF_SM) { 2108098fde11Schas williams - CONTRACTOR printk 2109098fde11Schas williams - CONTRACTOR ("nicstar%d: Expected a small buffer, and this is not one.\n", 21101da177e4SLinus Torvalds card->index); 21111da177e4SLinus Torvalds which_list(card, skb); 21121da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 21131da177e4SLinus Torvalds recycle_rx_buf(card, skb); 21141da177e4SLinus Torvalds vc->rx_iov = NULL; 21151da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 21161da177e4SLinus Torvalds return; 21171da177e4SLinus Torvalds } 2118864a3ff6Schas williams - CONTRACTOR } else { /* NS_PRV_IOVCNT(iovb) >= 2 */ 2119098fde11Schas williams - CONTRACTOR 2120864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) != BUF_LG) { 2121098fde11Schas williams - CONTRACTOR printk 2122098fde11Schas williams - CONTRACTOR ("nicstar%d: Expected a large buffer, and this is not one.\n", 21231da177e4SLinus Torvalds card->index); 21241da177e4SLinus Torvalds which_list(card, skb); 21251da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 21261da177e4SLinus Torvalds recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, 2127864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb)); 21281da177e4SLinus Torvalds vc->rx_iov = NULL; 21291da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 21301da177e4SLinus Torvalds return; 21311da177e4SLinus Torvalds } 21321da177e4SLinus Torvalds } 2133864a3ff6Schas williams - CONTRACTOR #endif /* EXTRA_DEBUG */ 21341da177e4SLinus Torvalds 2135098fde11Schas williams - CONTRACTOR if (ns_rsqe_eopdu(rsqe)) { 21361da177e4SLinus Torvalds /* This works correctly regardless of the endianness of the host */ 2137864a3ff6Schas williams - CONTRACTOR unsigned char *L1L2 = (unsigned char *) 2138864a3ff6Schas williams - CONTRACTOR (skb->data + iov->iov_len - 6); 21391da177e4SLinus Torvalds aal5_len = L1L2[0] << 8 | L1L2[1]; 21401da177e4SLinus Torvalds len = (aal5_len == 0x0000) ? 0x10000 : aal5_len; 21411da177e4SLinus Torvalds if (ns_rsqe_crcerr(rsqe) || 2142098fde11Schas williams - CONTRACTOR len + 8 > iovb->len || len + (47 + 8) < iovb->len) { 21431da177e4SLinus Torvalds printk("nicstar%d: AAL5 CRC error", card->index); 21441da177e4SLinus Torvalds if (len + 8 > iovb->len || len + (47 + 8) < iovb->len) 21451da177e4SLinus Torvalds printk(" - PDU size mismatch.\n"); 21461da177e4SLinus Torvalds else 21471da177e4SLinus Torvalds printk(".\n"); 21481da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 21491da177e4SLinus Torvalds recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data, 2150864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb)); 21511da177e4SLinus Torvalds vc->rx_iov = NULL; 21521da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 21531da177e4SLinus Torvalds return; 21541da177e4SLinus Torvalds } 21551da177e4SLinus Torvalds 21561da177e4SLinus Torvalds /* By this point we (hopefully) have a complete SDU without errors. */ 21571da177e4SLinus Torvalds 2158864a3ff6Schas williams - CONTRACTOR if (NS_PRV_IOVCNT(iovb) == 1) { /* Just a small buffer */ 21591da177e4SLinus Torvalds /* skb points to a small buffer */ 2160098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, skb->truesize)) { 21618728b834SDavid S. Miller push_rxbufs(card, skb); 21621da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 2163098fde11Schas williams - CONTRACTOR } else { 21641da177e4SLinus Torvalds skb_put(skb, len); 21651da177e4SLinus Torvalds dequeue_sm_buf(card, skb); 21661da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 2167a61bbcf2SPatrick McHardy __net_timestamp(skb); 21681da177e4SLinus Torvalds vcc->push(vcc, skb); 21691da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 21701da177e4SLinus Torvalds } 2171864a3ff6Schas williams - CONTRACTOR } else if (NS_PRV_IOVCNT(iovb) == 2) { /* One small plus one large buffer */ 21721da177e4SLinus Torvalds struct sk_buff *sb; 21731da177e4SLinus Torvalds 21741da177e4SLinus Torvalds sb = (struct sk_buff *)(iov - 1)->iov_base; 21751da177e4SLinus Torvalds /* skb points to a large buffer */ 21761da177e4SLinus Torvalds 2177098fde11Schas williams - CONTRACTOR if (len <= NS_SMBUFSIZE) { 2178098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, sb->truesize)) { 21798728b834SDavid S. Miller push_rxbufs(card, sb); 21801da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 2181098fde11Schas williams - CONTRACTOR } else { 21821da177e4SLinus Torvalds skb_put(sb, len); 21831da177e4SLinus Torvalds dequeue_sm_buf(card, sb); 21841da177e4SLinus Torvalds ATM_SKB(sb)->vcc = vcc; 2185a61bbcf2SPatrick McHardy __net_timestamp(sb); 21861da177e4SLinus Torvalds vcc->push(vcc, sb); 21871da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 21881da177e4SLinus Torvalds } 21891da177e4SLinus Torvalds 21908728b834SDavid S. Miller push_rxbufs(card, skb); 21911da177e4SLinus Torvalds 2192098fde11Schas williams - CONTRACTOR } else { /* len > NS_SMBUFSIZE, the usual case */ 2193098fde11Schas williams - CONTRACTOR 2194098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, skb->truesize)) { 21958728b834SDavid S. Miller push_rxbufs(card, skb); 21961da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 2197098fde11Schas williams - CONTRACTOR } else { 21981da177e4SLinus Torvalds dequeue_lg_buf(card, skb); 21991da177e4SLinus Torvalds skb_push(skb, NS_SMBUFSIZE); 2200098fde11Schas williams - CONTRACTOR skb_copy_from_linear_data(sb, skb->data, 2201098fde11Schas williams - CONTRACTOR NS_SMBUFSIZE); 22021da177e4SLinus Torvalds skb_put(skb, len - NS_SMBUFSIZE); 22031da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 2204a61bbcf2SPatrick McHardy __net_timestamp(skb); 22051da177e4SLinus Torvalds vcc->push(vcc, skb); 22061da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 22071da177e4SLinus Torvalds } 22081da177e4SLinus Torvalds 22098728b834SDavid S. Miller push_rxbufs(card, sb); 22101da177e4SLinus Torvalds 22111da177e4SLinus Torvalds } 22121da177e4SLinus Torvalds 2213098fde11Schas williams - CONTRACTOR } else { /* Must push a huge buffer */ 2214098fde11Schas williams - CONTRACTOR 22151da177e4SLinus Torvalds struct sk_buff *hb, *sb, *lb; 22161da177e4SLinus Torvalds int remaining, tocopy; 22171da177e4SLinus Torvalds int j; 22181da177e4SLinus Torvalds 22191da177e4SLinus Torvalds hb = skb_dequeue(&(card->hbpool.queue)); 2220098fde11Schas williams - CONTRACTOR if (hb == NULL) { /* No buffers in the queue */ 22211da177e4SLinus Torvalds 22221da177e4SLinus Torvalds hb = dev_alloc_skb(NS_HBUFSIZE); 2223098fde11Schas williams - CONTRACTOR if (hb == NULL) { 2224098fde11Schas williams - CONTRACTOR printk 2225098fde11Schas williams - CONTRACTOR ("nicstar%d: Out of huge buffers.\n", 2226098fde11Schas williams - CONTRACTOR card->index); 22271da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 2228098fde11Schas williams - CONTRACTOR recycle_iovec_rx_bufs(card, 2229098fde11Schas williams - CONTRACTOR (struct iovec *) 2230098fde11Schas williams - CONTRACTOR iovb->data, 2231864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb)); 22321da177e4SLinus Torvalds vc->rx_iov = NULL; 22331da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 22341da177e4SLinus Torvalds return; 2235098fde11Schas williams - CONTRACTOR } else if (card->hbpool.count < card->hbnr.min) { 22361da177e4SLinus Torvalds struct sk_buff *new_hb; 2237098fde11Schas williams - CONTRACTOR if ((new_hb = 2238098fde11Schas williams - CONTRACTOR dev_alloc_skb(NS_HBUFSIZE)) != 2239098fde11Schas williams - CONTRACTOR NULL) { 2240098fde11Schas williams - CONTRACTOR skb_queue_tail(&card->hbpool. 2241098fde11Schas williams - CONTRACTOR queue, new_hb); 22421da177e4SLinus Torvalds card->hbpool.count++; 22431da177e4SLinus Torvalds } 22441da177e4SLinus Torvalds } 2245864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(hb) = BUF_NONE; 2246098fde11Schas williams - CONTRACTOR } else if (--card->hbpool.count < card->hbnr.min) { 22471da177e4SLinus Torvalds struct sk_buff *new_hb; 2248098fde11Schas williams - CONTRACTOR if ((new_hb = 2249098fde11Schas williams - CONTRACTOR dev_alloc_skb(NS_HBUFSIZE)) != NULL) { 2250864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_hb) = BUF_NONE; 2251098fde11Schas williams - CONTRACTOR skb_queue_tail(&card->hbpool.queue, 2252098fde11Schas williams - CONTRACTOR new_hb); 22531da177e4SLinus Torvalds card->hbpool.count++; 22541da177e4SLinus Torvalds } 2255098fde11Schas williams - CONTRACTOR if (card->hbpool.count < card->hbnr.min) { 2256098fde11Schas williams - CONTRACTOR if ((new_hb = 2257098fde11Schas williams - CONTRACTOR dev_alloc_skb(NS_HBUFSIZE)) != 2258098fde11Schas williams - CONTRACTOR NULL) { 2259864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_hb) = 2260098fde11Schas williams - CONTRACTOR BUF_NONE; 2261098fde11Schas williams - CONTRACTOR skb_queue_tail(&card->hbpool. 2262098fde11Schas williams - CONTRACTOR queue, new_hb); 22631da177e4SLinus Torvalds card->hbpool.count++; 22641da177e4SLinus Torvalds } 22651da177e4SLinus Torvalds } 22661da177e4SLinus Torvalds } 22671da177e4SLinus Torvalds 22681da177e4SLinus Torvalds iov = (struct iovec *)iovb->data; 22691da177e4SLinus Torvalds 2270098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, hb->truesize)) { 2271098fde11Schas williams - CONTRACTOR recycle_iovec_rx_bufs(card, iov, 2272864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb)); 2273098fde11Schas williams - CONTRACTOR if (card->hbpool.count < card->hbnr.max) { 22741da177e4SLinus Torvalds skb_queue_tail(&card->hbpool.queue, hb); 22751da177e4SLinus Torvalds card->hbpool.count++; 2276098fde11Schas williams - CONTRACTOR } else 22771da177e4SLinus Torvalds dev_kfree_skb_any(hb); 22781da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 2279098fde11Schas williams - CONTRACTOR } else { 22801da177e4SLinus Torvalds /* Copy the small buffer to the huge buffer */ 22811da177e4SLinus Torvalds sb = (struct sk_buff *)iov->iov_base; 2282098fde11Schas williams - CONTRACTOR skb_copy_from_linear_data(sb, hb->data, 2283098fde11Schas williams - CONTRACTOR iov->iov_len); 22841da177e4SLinus Torvalds skb_put(hb, iov->iov_len); 22851da177e4SLinus Torvalds remaining = len - iov->iov_len; 22861da177e4SLinus Torvalds iov++; 22871da177e4SLinus Torvalds /* Free the small buffer */ 22888728b834SDavid S. Miller push_rxbufs(card, sb); 22891da177e4SLinus Torvalds 22901da177e4SLinus Torvalds /* Copy all large buffers to the huge buffer and free them */ 2291864a3ff6Schas williams - CONTRACTOR for (j = 1; j < NS_PRV_IOVCNT(iovb); j++) { 22921da177e4SLinus Torvalds lb = (struct sk_buff *)iov->iov_base; 2293098fde11Schas williams - CONTRACTOR tocopy = 2294098fde11Schas williams - CONTRACTOR min_t(int, remaining, iov->iov_len); 2295098fde11Schas williams - CONTRACTOR skb_copy_from_linear_data(lb, 2296098fde11Schas williams - CONTRACTOR skb_tail_pointer 2297098fde11Schas williams - CONTRACTOR (hb), tocopy); 22981da177e4SLinus Torvalds skb_put(hb, tocopy); 22991da177e4SLinus Torvalds iov++; 23001da177e4SLinus Torvalds remaining -= tocopy; 23018728b834SDavid S. Miller push_rxbufs(card, lb); 23021da177e4SLinus Torvalds } 23031da177e4SLinus Torvalds #ifdef EXTRA_DEBUG 23041da177e4SLinus Torvalds if (remaining != 0 || hb->len != len) 2305098fde11Schas williams - CONTRACTOR printk 2306098fde11Schas williams - CONTRACTOR ("nicstar%d: Huge buffer len mismatch.\n", 2307098fde11Schas williams - CONTRACTOR card->index); 23081da177e4SLinus Torvalds #endif /* EXTRA_DEBUG */ 23091da177e4SLinus Torvalds ATM_SKB(hb)->vcc = vcc; 2310a61bbcf2SPatrick McHardy __net_timestamp(hb); 23111da177e4SLinus Torvalds vcc->push(vcc, hb); 23121da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 23131da177e4SLinus Torvalds } 23141da177e4SLinus Torvalds } 23151da177e4SLinus Torvalds 23161da177e4SLinus Torvalds vc->rx_iov = NULL; 23171da177e4SLinus Torvalds recycle_iov_buf(card, iovb); 23181da177e4SLinus Torvalds } 23191da177e4SLinus Torvalds 23201da177e4SLinus Torvalds } 23211da177e4SLinus Torvalds 23221da177e4SLinus Torvalds static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb) 23231da177e4SLinus Torvalds { 2324864a3ff6Schas williams - CONTRACTOR if (unlikely(NS_PRV_BUFTYPE(skb) == BUF_NONE)) { 2325098fde11Schas williams - CONTRACTOR printk("nicstar%d: What kind of rx buffer is this?\n", 2326098fde11Schas williams - CONTRACTOR card->index); 23271da177e4SLinus Torvalds dev_kfree_skb_any(skb); 23288728b834SDavid S. Miller } else 23298728b834SDavid S. Miller push_rxbufs(card, skb); 23301da177e4SLinus Torvalds } 23311da177e4SLinus Torvalds 23321da177e4SLinus Torvalds static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count) 23331da177e4SLinus Torvalds { 23348728b834SDavid S. Miller while (count-- > 0) 23358728b834SDavid S. Miller recycle_rx_buf(card, (struct sk_buff *)(iov++)->iov_base); 23361da177e4SLinus Torvalds } 23371da177e4SLinus Torvalds 23381da177e4SLinus Torvalds static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb) 23391da177e4SLinus Torvalds { 2340098fde11Schas williams - CONTRACTOR if (card->iovpool.count < card->iovnr.max) { 23411da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, iovb); 23421da177e4SLinus Torvalds card->iovpool.count++; 2343098fde11Schas williams - CONTRACTOR } else 23441da177e4SLinus Torvalds dev_kfree_skb_any(iovb); 23451da177e4SLinus Torvalds } 23461da177e4SLinus Torvalds 23471da177e4SLinus Torvalds static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb) 23481da177e4SLinus Torvalds { 23498728b834SDavid S. Miller skb_unlink(sb, &card->sbpool.queue); 2350098fde11Schas williams - CONTRACTOR if (card->sbfqc < card->sbnr.init) { 23511da177e4SLinus Torvalds struct sk_buff *new_sb; 2352098fde11Schas williams - CONTRACTOR if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) { 2353864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_sb) = BUF_SM; 23541da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, new_sb); 23551da177e4SLinus Torvalds skb_reserve(new_sb, NS_AAL0_HEADER); 23568728b834SDavid S. Miller push_rxbufs(card, new_sb); 23571da177e4SLinus Torvalds } 23581da177e4SLinus Torvalds } 23591da177e4SLinus Torvalds if (card->sbfqc < card->sbnr.init) 23601da177e4SLinus Torvalds { 23611da177e4SLinus Torvalds struct sk_buff *new_sb; 2362098fde11Schas williams - CONTRACTOR if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) { 2363864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_sb) = BUF_SM; 23641da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, new_sb); 23651da177e4SLinus Torvalds skb_reserve(new_sb, NS_AAL0_HEADER); 23668728b834SDavid S. Miller push_rxbufs(card, new_sb); 23671da177e4SLinus Torvalds } 23681da177e4SLinus Torvalds } 23691da177e4SLinus Torvalds } 23701da177e4SLinus Torvalds 23711da177e4SLinus Torvalds static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb) 23721da177e4SLinus Torvalds { 23738728b834SDavid S. Miller skb_unlink(lb, &card->lbpool.queue); 2374098fde11Schas williams - CONTRACTOR if (card->lbfqc < card->lbnr.init) { 23751da177e4SLinus Torvalds struct sk_buff *new_lb; 2376098fde11Schas williams - CONTRACTOR if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) { 2377864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_lb) = BUF_LG; 23781da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, new_lb); 23791da177e4SLinus Torvalds skb_reserve(new_lb, NS_SMBUFSIZE); 23808728b834SDavid S. Miller push_rxbufs(card, new_lb); 23811da177e4SLinus Torvalds } 23821da177e4SLinus Torvalds } 23831da177e4SLinus Torvalds if (card->lbfqc < card->lbnr.init) 23841da177e4SLinus Torvalds { 23851da177e4SLinus Torvalds struct sk_buff *new_lb; 2386098fde11Schas williams - CONTRACTOR if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) { 2387864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_lb) = BUF_LG; 23881da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, new_lb); 23891da177e4SLinus Torvalds skb_reserve(new_lb, NS_SMBUFSIZE); 23908728b834SDavid S. Miller push_rxbufs(card, new_lb); 23911da177e4SLinus Torvalds } 23921da177e4SLinus Torvalds } 23931da177e4SLinus Torvalds } 23941da177e4SLinus Torvalds 23951da177e4SLinus Torvalds static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page) 23961da177e4SLinus Torvalds { 23971da177e4SLinus Torvalds u32 stat; 23981da177e4SLinus Torvalds ns_dev *card; 23991da177e4SLinus Torvalds int left; 24001da177e4SLinus Torvalds 24011da177e4SLinus Torvalds left = (int)*pos; 24021da177e4SLinus Torvalds card = (ns_dev *) dev->dev_data; 24031da177e4SLinus Torvalds stat = readl(card->membase + STAT); 24041da177e4SLinus Torvalds if (!left--) 24051da177e4SLinus Torvalds return sprintf(page, "Pool count min init max \n"); 24061da177e4SLinus Torvalds if (!left--) 24071da177e4SLinus Torvalds return sprintf(page, "Small %5d %5d %5d %5d \n", 2408098fde11Schas williams - CONTRACTOR ns_stat_sfbqc_get(stat), card->sbnr.min, 2409098fde11Schas williams - CONTRACTOR card->sbnr.init, card->sbnr.max); 24101da177e4SLinus Torvalds if (!left--) 24111da177e4SLinus Torvalds return sprintf(page, "Large %5d %5d %5d %5d \n", 2412098fde11Schas williams - CONTRACTOR ns_stat_lfbqc_get(stat), card->lbnr.min, 2413098fde11Schas williams - CONTRACTOR card->lbnr.init, card->lbnr.max); 24141da177e4SLinus Torvalds if (!left--) 2415098fde11Schas williams - CONTRACTOR return sprintf(page, "Huge %5d %5d %5d %5d \n", 2416098fde11Schas williams - CONTRACTOR card->hbpool.count, card->hbnr.min, 2417098fde11Schas williams - CONTRACTOR card->hbnr.init, card->hbnr.max); 24181da177e4SLinus Torvalds if (!left--) 2419098fde11Schas williams - CONTRACTOR return sprintf(page, "Iovec %5d %5d %5d %5d \n", 2420098fde11Schas williams - CONTRACTOR card->iovpool.count, card->iovnr.min, 2421098fde11Schas williams - CONTRACTOR card->iovnr.init, card->iovnr.max); 2422098fde11Schas williams - CONTRACTOR if (!left--) { 24231da177e4SLinus Torvalds int retval; 2424098fde11Schas williams - CONTRACTOR retval = 2425098fde11Schas williams - CONTRACTOR sprintf(page, "Interrupt counter: %u \n", card->intcnt); 24261da177e4SLinus Torvalds card->intcnt = 0; 24271da177e4SLinus Torvalds return retval; 24281da177e4SLinus Torvalds } 24291da177e4SLinus Torvalds #if 0 24301da177e4SLinus Torvalds /* Dump 25.6 Mbps PHY registers */ 24311da177e4SLinus Torvalds /* Now there's a 25.6 Mbps PHY driver this code isn't needed. I left it 24321da177e4SLinus Torvalds here just in case it's needed for debugging. */ 2433098fde11Schas williams - CONTRACTOR if (card->max_pcr == ATM_25_PCR && !left--) { 24341da177e4SLinus Torvalds u32 phy_regs[4]; 24351da177e4SLinus Torvalds u32 i; 24361da177e4SLinus Torvalds 2437098fde11Schas williams - CONTRACTOR for (i = 0; i < 4; i++) { 24381da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 2439098fde11Schas williams - CONTRACTOR writel(NS_CMD_READ_UTILITY | 0x00000200 | i, 2440098fde11Schas williams - CONTRACTOR card->membase + CMD); 24411da177e4SLinus Torvalds while (CMD_BUSY(card)) ; 24421da177e4SLinus Torvalds phy_regs[i] = readl(card->membase + DR0) & 0x000000FF; 24431da177e4SLinus Torvalds } 24441da177e4SLinus Torvalds 24451da177e4SLinus Torvalds return sprintf(page, "PHY regs: 0x%02X 0x%02X 0x%02X 0x%02X \n", 2446098fde11Schas williams - CONTRACTOR phy_regs[0], phy_regs[1], phy_regs[2], 2447098fde11Schas williams - CONTRACTOR phy_regs[3]); 24481da177e4SLinus Torvalds } 24491da177e4SLinus Torvalds #endif /* 0 - Dump 25.6 Mbps PHY registers */ 24501da177e4SLinus Torvalds #if 0 24511da177e4SLinus Torvalds /* Dump TST */ 2452098fde11Schas williams - CONTRACTOR if (left-- < NS_TST_NUM_ENTRIES) { 24531da177e4SLinus Torvalds if (card->tste2vc[left + 1] == NULL) 24541da177e4SLinus Torvalds return sprintf(page, "%5d - VBR/UBR \n", left + 1); 24551da177e4SLinus Torvalds else 24561da177e4SLinus Torvalds return sprintf(page, "%5d - %d %d \n", left + 1, 24571da177e4SLinus Torvalds card->tste2vc[left + 1]->tx_vcc->vpi, 24581da177e4SLinus Torvalds card->tste2vc[left + 1]->tx_vcc->vci); 24591da177e4SLinus Torvalds } 24601da177e4SLinus Torvalds #endif /* 0 */ 24611da177e4SLinus Torvalds return 0; 24621da177e4SLinus Torvalds } 24631da177e4SLinus Torvalds 24641da177e4SLinus Torvalds static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg) 24651da177e4SLinus Torvalds { 24661da177e4SLinus Torvalds ns_dev *card; 24671da177e4SLinus Torvalds pool_levels pl; 246869c30147SAlan Cox long btype; 24691da177e4SLinus Torvalds unsigned long flags; 24701da177e4SLinus Torvalds 24711da177e4SLinus Torvalds card = dev->dev_data; 2472098fde11Schas williams - CONTRACTOR switch (cmd) { 24731da177e4SLinus Torvalds case NS_GETPSTAT: 2474098fde11Schas williams - CONTRACTOR if (get_user 2475098fde11Schas williams - CONTRACTOR (pl.buftype, &((pool_levels __user *) arg)->buftype)) 24761da177e4SLinus Torvalds return -EFAULT; 2477098fde11Schas williams - CONTRACTOR switch (pl.buftype) { 24781da177e4SLinus Torvalds case NS_BUFTYPE_SMALL: 2479098fde11Schas williams - CONTRACTOR pl.count = 2480098fde11Schas williams - CONTRACTOR ns_stat_sfbqc_get(readl(card->membase + STAT)); 24811da177e4SLinus Torvalds pl.level.min = card->sbnr.min; 24821da177e4SLinus Torvalds pl.level.init = card->sbnr.init; 24831da177e4SLinus Torvalds pl.level.max = card->sbnr.max; 24841da177e4SLinus Torvalds break; 24851da177e4SLinus Torvalds 24861da177e4SLinus Torvalds case NS_BUFTYPE_LARGE: 2487098fde11Schas williams - CONTRACTOR pl.count = 2488098fde11Schas williams - CONTRACTOR ns_stat_lfbqc_get(readl(card->membase + STAT)); 24891da177e4SLinus Torvalds pl.level.min = card->lbnr.min; 24901da177e4SLinus Torvalds pl.level.init = card->lbnr.init; 24911da177e4SLinus Torvalds pl.level.max = card->lbnr.max; 24921da177e4SLinus Torvalds break; 24931da177e4SLinus Torvalds 24941da177e4SLinus Torvalds case NS_BUFTYPE_HUGE: 24951da177e4SLinus Torvalds pl.count = card->hbpool.count; 24961da177e4SLinus Torvalds pl.level.min = card->hbnr.min; 24971da177e4SLinus Torvalds pl.level.init = card->hbnr.init; 24981da177e4SLinus Torvalds pl.level.max = card->hbnr.max; 24991da177e4SLinus Torvalds break; 25001da177e4SLinus Torvalds 25011da177e4SLinus Torvalds case NS_BUFTYPE_IOVEC: 25021da177e4SLinus Torvalds pl.count = card->iovpool.count; 25031da177e4SLinus Torvalds pl.level.min = card->iovnr.min; 25041da177e4SLinus Torvalds pl.level.init = card->iovnr.init; 25051da177e4SLinus Torvalds pl.level.max = card->iovnr.max; 25061da177e4SLinus Torvalds break; 25071da177e4SLinus Torvalds 25081da177e4SLinus Torvalds default: 25091da177e4SLinus Torvalds return -ENOIOCTLCMD; 25101da177e4SLinus Torvalds 25111da177e4SLinus Torvalds } 25121da177e4SLinus Torvalds if (!copy_to_user((pool_levels __user *) arg, &pl, sizeof(pl))) 25131da177e4SLinus Torvalds return (sizeof(pl)); 25141da177e4SLinus Torvalds else 25151da177e4SLinus Torvalds return -EFAULT; 25161da177e4SLinus Torvalds 25171da177e4SLinus Torvalds case NS_SETBUFLEV: 25181da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 25191da177e4SLinus Torvalds return -EPERM; 25201da177e4SLinus Torvalds if (copy_from_user(&pl, (pool_levels __user *) arg, sizeof(pl))) 25211da177e4SLinus Torvalds return -EFAULT; 2522098fde11Schas williams - CONTRACTOR if (pl.level.min >= pl.level.init 2523098fde11Schas williams - CONTRACTOR || pl.level.init >= pl.level.max) 25241da177e4SLinus Torvalds return -EINVAL; 25251da177e4SLinus Torvalds if (pl.level.min == 0) 25261da177e4SLinus Torvalds return -EINVAL; 2527098fde11Schas williams - CONTRACTOR switch (pl.buftype) { 25281da177e4SLinus Torvalds case NS_BUFTYPE_SMALL: 25291da177e4SLinus Torvalds if (pl.level.max > TOP_SB) 25301da177e4SLinus Torvalds return -EINVAL; 25311da177e4SLinus Torvalds card->sbnr.min = pl.level.min; 25321da177e4SLinus Torvalds card->sbnr.init = pl.level.init; 25331da177e4SLinus Torvalds card->sbnr.max = pl.level.max; 25341da177e4SLinus Torvalds break; 25351da177e4SLinus Torvalds 25361da177e4SLinus Torvalds case NS_BUFTYPE_LARGE: 25371da177e4SLinus Torvalds if (pl.level.max > TOP_LB) 25381da177e4SLinus Torvalds return -EINVAL; 25391da177e4SLinus Torvalds card->lbnr.min = pl.level.min; 25401da177e4SLinus Torvalds card->lbnr.init = pl.level.init; 25411da177e4SLinus Torvalds card->lbnr.max = pl.level.max; 25421da177e4SLinus Torvalds break; 25431da177e4SLinus Torvalds 25441da177e4SLinus Torvalds case NS_BUFTYPE_HUGE: 25451da177e4SLinus Torvalds if (pl.level.max > TOP_HB) 25461da177e4SLinus Torvalds return -EINVAL; 25471da177e4SLinus Torvalds card->hbnr.min = pl.level.min; 25481da177e4SLinus Torvalds card->hbnr.init = pl.level.init; 25491da177e4SLinus Torvalds card->hbnr.max = pl.level.max; 25501da177e4SLinus Torvalds break; 25511da177e4SLinus Torvalds 25521da177e4SLinus Torvalds case NS_BUFTYPE_IOVEC: 25531da177e4SLinus Torvalds if (pl.level.max > TOP_IOVB) 25541da177e4SLinus Torvalds return -EINVAL; 25551da177e4SLinus Torvalds card->iovnr.min = pl.level.min; 25561da177e4SLinus Torvalds card->iovnr.init = pl.level.init; 25571da177e4SLinus Torvalds card->iovnr.max = pl.level.max; 25581da177e4SLinus Torvalds break; 25591da177e4SLinus Torvalds 25601da177e4SLinus Torvalds default: 25611da177e4SLinus Torvalds return -EINVAL; 25621da177e4SLinus Torvalds 25631da177e4SLinus Torvalds } 25641da177e4SLinus Torvalds return 0; 25651da177e4SLinus Torvalds 25661da177e4SLinus Torvalds case NS_ADJBUFLEV: 25671da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 25681da177e4SLinus Torvalds return -EPERM; 256969c30147SAlan Cox btype = (long)arg; /* a long is the same size as a pointer or bigger */ 2570098fde11Schas williams - CONTRACTOR switch (btype) { 25711da177e4SLinus Torvalds case NS_BUFTYPE_SMALL: 2572098fde11Schas williams - CONTRACTOR while (card->sbfqc < card->sbnr.init) { 25731da177e4SLinus Torvalds struct sk_buff *sb; 25741da177e4SLinus Torvalds 25751da177e4SLinus Torvalds sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL); 25761da177e4SLinus Torvalds if (sb == NULL) 25771da177e4SLinus Torvalds return -ENOMEM; 2578864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(sb) = BUF_SM; 25791da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, sb); 25801da177e4SLinus Torvalds skb_reserve(sb, NS_AAL0_HEADER); 25818728b834SDavid S. Miller push_rxbufs(card, sb); 25821da177e4SLinus Torvalds } 25831da177e4SLinus Torvalds break; 25841da177e4SLinus Torvalds 25851da177e4SLinus Torvalds case NS_BUFTYPE_LARGE: 2586098fde11Schas williams - CONTRACTOR while (card->lbfqc < card->lbnr.init) { 25871da177e4SLinus Torvalds struct sk_buff *lb; 25881da177e4SLinus Torvalds 25891da177e4SLinus Torvalds lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL); 25901da177e4SLinus Torvalds if (lb == NULL) 25911da177e4SLinus Torvalds return -ENOMEM; 2592864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(lb) = BUF_LG; 25931da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, lb); 25941da177e4SLinus Torvalds skb_reserve(lb, NS_SMBUFSIZE); 25958728b834SDavid S. Miller push_rxbufs(card, lb); 25961da177e4SLinus Torvalds } 25971da177e4SLinus Torvalds break; 25981da177e4SLinus Torvalds 25991da177e4SLinus Torvalds case NS_BUFTYPE_HUGE: 2600098fde11Schas williams - CONTRACTOR while (card->hbpool.count > card->hbnr.init) { 26011da177e4SLinus Torvalds struct sk_buff *hb; 26021da177e4SLinus Torvalds 260336ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 26041da177e4SLinus Torvalds hb = skb_dequeue(&card->hbpool.queue); 26051da177e4SLinus Torvalds card->hbpool.count--; 26061da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 26071da177e4SLinus Torvalds if (hb == NULL) 2608098fde11Schas williams - CONTRACTOR printk 2609098fde11Schas williams - CONTRACTOR ("nicstar%d: huge buffer count inconsistent.\n", 26101da177e4SLinus Torvalds card->index); 26111da177e4SLinus Torvalds else 26121da177e4SLinus Torvalds dev_kfree_skb_any(hb); 26131da177e4SLinus Torvalds 26141da177e4SLinus Torvalds } 2615098fde11Schas williams - CONTRACTOR while (card->hbpool.count < card->hbnr.init) { 26161da177e4SLinus Torvalds struct sk_buff *hb; 26171da177e4SLinus Torvalds 26181da177e4SLinus Torvalds hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL); 26191da177e4SLinus Torvalds if (hb == NULL) 26201da177e4SLinus Torvalds return -ENOMEM; 2621864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(hb) = BUF_NONE; 262236ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 26231da177e4SLinus Torvalds skb_queue_tail(&card->hbpool.queue, hb); 26241da177e4SLinus Torvalds card->hbpool.count++; 26251da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 26261da177e4SLinus Torvalds } 26271da177e4SLinus Torvalds break; 26281da177e4SLinus Torvalds 26291da177e4SLinus Torvalds case NS_BUFTYPE_IOVEC: 2630098fde11Schas williams - CONTRACTOR while (card->iovpool.count > card->iovnr.init) { 26311da177e4SLinus Torvalds struct sk_buff *iovb; 26321da177e4SLinus Torvalds 263336ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 26341da177e4SLinus Torvalds iovb = skb_dequeue(&card->iovpool.queue); 26351da177e4SLinus Torvalds card->iovpool.count--; 26361da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 26371da177e4SLinus Torvalds if (iovb == NULL) 2638098fde11Schas williams - CONTRACTOR printk 2639098fde11Schas williams - CONTRACTOR ("nicstar%d: iovec buffer count inconsistent.\n", 26401da177e4SLinus Torvalds card->index); 26411da177e4SLinus Torvalds else 26421da177e4SLinus Torvalds dev_kfree_skb_any(iovb); 26431da177e4SLinus Torvalds 26441da177e4SLinus Torvalds } 2645098fde11Schas williams - CONTRACTOR while (card->iovpool.count < card->iovnr.init) { 26461da177e4SLinus Torvalds struct sk_buff *iovb; 26471da177e4SLinus Torvalds 26481da177e4SLinus Torvalds iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL); 26491da177e4SLinus Torvalds if (iovb == NULL) 26501da177e4SLinus Torvalds return -ENOMEM; 2651864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE; 265236ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags); 26531da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, iovb); 26541da177e4SLinus Torvalds card->iovpool.count++; 26551da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags); 26561da177e4SLinus Torvalds } 26571da177e4SLinus Torvalds break; 26581da177e4SLinus Torvalds 26591da177e4SLinus Torvalds default: 26601da177e4SLinus Torvalds return -EINVAL; 26611da177e4SLinus Torvalds 26621da177e4SLinus Torvalds } 26631da177e4SLinus Torvalds return 0; 26641da177e4SLinus Torvalds 26651da177e4SLinus Torvalds default: 26661da177e4SLinus Torvalds if (dev->phy && dev->phy->ioctl) { 26671da177e4SLinus Torvalds return dev->phy->ioctl(dev, cmd, arg); 2668098fde11Schas williams - CONTRACTOR } else { 26691da177e4SLinus Torvalds printk("nicstar%d: %s == NULL \n", card->index, 26701da177e4SLinus Torvalds dev->phy ? "dev->phy->ioctl" : "dev->phy"); 26711da177e4SLinus Torvalds return -ENOIOCTLCMD; 26721da177e4SLinus Torvalds } 26731da177e4SLinus Torvalds } 26741da177e4SLinus Torvalds } 26751da177e4SLinus Torvalds 2676864a3ff6Schas williams - CONTRACTOR #ifdef EXTRA_DEBUG 26771da177e4SLinus Torvalds static void which_list(ns_dev * card, struct sk_buff *skb) 26781da177e4SLinus Torvalds { 2679864a3ff6Schas williams - CONTRACTOR printk("skb buf_type: 0x%08x\n", NS_PRV_BUFTYPE(skb)); 26801da177e4SLinus Torvalds } 2681864a3ff6Schas williams - CONTRACTOR #endif /* EXTRA_DEBUG */ 26821da177e4SLinus Torvalds 2683e99e88a9SKees Cook static void ns_poll(struct timer_list *unused) 26841da177e4SLinus Torvalds { 26851da177e4SLinus Torvalds int i; 26861da177e4SLinus Torvalds ns_dev *card; 26871da177e4SLinus Torvalds unsigned long flags; 26881da177e4SLinus Torvalds u32 stat_r, stat_w; 26891da177e4SLinus Torvalds 26901da177e4SLinus Torvalds PRINTK("nicstar: Entering ns_poll().\n"); 2691098fde11Schas williams - CONTRACTOR for (i = 0; i < num_cards; i++) { 26921da177e4SLinus Torvalds card = cards[i]; 26939a694c1dSLance Roy if (!spin_trylock_irqsave(&card->int_lock, flags)) { 26941da177e4SLinus Torvalds /* Probably it isn't worth spinning */ 26951da177e4SLinus Torvalds continue; 26961da177e4SLinus Torvalds } 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