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);
133f2bcc2faSSebastian Andrzej Siewior static int ns_send_bh(struct atm_vcc *vcc, struct sk_buff *skb);
1341da177e4SLinus Torvalds static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd,
135f2bcc2faSSebastian Andrzej Siewior struct sk_buff *skb, bool may_sleep);
1361da177e4SLinus Torvalds static void process_tsq(ns_dev * card);
1371da177e4SLinus Torvalds static void drain_scq(ns_dev * card, scq_info * scq, int pos);
1381da177e4SLinus Torvalds static void process_rsq(ns_dev * card);
1391da177e4SLinus Torvalds static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe);
1401da177e4SLinus Torvalds static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb);
1411da177e4SLinus Torvalds static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count);
1421da177e4SLinus Torvalds static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb);
1431da177e4SLinus Torvalds static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb);
1441da177e4SLinus Torvalds static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb);
1451da177e4SLinus Torvalds static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page);
1461da177e4SLinus Torvalds static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg);
147864a3ff6Schas williams - CONTRACTOR #ifdef EXTRA_DEBUG
1481da177e4SLinus Torvalds static void which_list(ns_dev * card, struct sk_buff *skb);
149864a3ff6Schas williams - CONTRACTOR #endif
150e99e88a9SKees Cook static void ns_poll(struct timer_list *unused);
1511da177e4SLinus Torvalds static void ns_phy_put(struct atm_dev *dev, unsigned char value,
1521da177e4SLinus Torvalds unsigned long addr);
1531da177e4SLinus Torvalds static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr);
1541da177e4SLinus Torvalds
155098fde11Schas williams - CONTRACTOR /* Global variables */
1561da177e4SLinus Torvalds
1571da177e4SLinus Torvalds static struct ns_dev *cards[NS_MAX_CARDS];
1581da177e4SLinus Torvalds static unsigned num_cards;
15946c4b7a5SBhumika Goyal static const struct atmdev_ops atm_ops = {
1601da177e4SLinus Torvalds .open = ns_open,
1611da177e4SLinus Torvalds .close = ns_close,
1621da177e4SLinus Torvalds .ioctl = ns_ioctl,
1631da177e4SLinus Torvalds .send = ns_send,
164f2bcc2faSSebastian Andrzej Siewior .send_bh = ns_send_bh,
1651da177e4SLinus Torvalds .phy_put = ns_phy_put,
1661da177e4SLinus Torvalds .phy_get = ns_phy_get,
1671da177e4SLinus Torvalds .proc_read = ns_proc_read,
1681da177e4SLinus Torvalds .owner = THIS_MODULE,
1691da177e4SLinus Torvalds };
170098fde11Schas williams - CONTRACTOR
1711da177e4SLinus Torvalds static struct timer_list ns_timer;
1721da177e4SLinus Torvalds static char *mac[NS_MAX_CARDS];
1731da177e4SLinus Torvalds module_param_array(mac, charp, NULL, 0);
1741da177e4SLinus Torvalds MODULE_LICENSE("GPL");
1751da177e4SLinus Torvalds
176098fde11Schas williams - CONTRACTOR /* Functions */
1771da177e4SLinus Torvalds
nicstar_init_one(struct pci_dev * pcidev,const struct pci_device_id * ent)1786c44512dSGreg Kroah-Hartman static int nicstar_init_one(struct pci_dev *pcidev,
1791da177e4SLinus Torvalds const struct pci_device_id *ent)
1801da177e4SLinus Torvalds {
1811da177e4SLinus Torvalds static int index = -1;
1821da177e4SLinus Torvalds unsigned int error;
1831da177e4SLinus Torvalds
1841da177e4SLinus Torvalds index++;
1851da177e4SLinus Torvalds cards[index] = NULL;
1861da177e4SLinus Torvalds
1871da177e4SLinus Torvalds error = ns_init_card(index, pcidev);
1881da177e4SLinus Torvalds if (error) {
1891da177e4SLinus Torvalds cards[index--] = NULL; /* don't increment index */
1901da177e4SLinus Torvalds goto err_out;
1911da177e4SLinus Torvalds }
1921da177e4SLinus Torvalds
1931da177e4SLinus Torvalds return 0;
1941da177e4SLinus Torvalds err_out:
1951da177e4SLinus Torvalds return -ENODEV;
1961da177e4SLinus Torvalds }
1971da177e4SLinus Torvalds
nicstar_remove_one(struct pci_dev * pcidev)1986c44512dSGreg Kroah-Hartman static void nicstar_remove_one(struct pci_dev *pcidev)
1991da177e4SLinus Torvalds {
2001da177e4SLinus Torvalds int i, j;
2011da177e4SLinus Torvalds ns_dev *card = pci_get_drvdata(pcidev);
2021da177e4SLinus Torvalds struct sk_buff *hb;
2031da177e4SLinus Torvalds struct sk_buff *iovb;
2041da177e4SLinus Torvalds struct sk_buff *lb;
2051da177e4SLinus Torvalds struct sk_buff *sb;
2061da177e4SLinus Torvalds
2071da177e4SLinus Torvalds i = card->index;
2081da177e4SLinus Torvalds
2091da177e4SLinus Torvalds if (cards[i] == NULL)
2101da177e4SLinus Torvalds return;
2111da177e4SLinus Torvalds
2121da177e4SLinus Torvalds if (card->atmdev->phy && card->atmdev->phy->stop)
2131da177e4SLinus Torvalds card->atmdev->phy->stop(card->atmdev);
2141da177e4SLinus Torvalds
2151da177e4SLinus Torvalds /* Stop everything */
2161da177e4SLinus Torvalds writel(0x00000000, card->membase + CFG);
2171da177e4SLinus Torvalds
2181da177e4SLinus Torvalds /* De-register device */
2191da177e4SLinus Torvalds atm_dev_deregister(card->atmdev);
2201da177e4SLinus Torvalds
2211da177e4SLinus Torvalds /* Disable PCI device */
2221da177e4SLinus Torvalds pci_disable_device(pcidev);
2231da177e4SLinus Torvalds
2241da177e4SLinus Torvalds /* Free up resources */
2251da177e4SLinus Torvalds j = 0;
2261da177e4SLinus Torvalds PRINTK("nicstar%d: freeing %d huge buffers.\n", i, card->hbpool.count);
227098fde11Schas williams - CONTRACTOR while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL) {
2281da177e4SLinus Torvalds dev_kfree_skb_any(hb);
2291da177e4SLinus Torvalds j++;
2301da177e4SLinus Torvalds }
2311da177e4SLinus Torvalds PRINTK("nicstar%d: %d huge buffers freed.\n", i, j);
2321da177e4SLinus Torvalds j = 0;
233098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: freeing %d iovec buffers.\n", i,
234098fde11Schas williams - CONTRACTOR card->iovpool.count);
235098fde11Schas williams - CONTRACTOR while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL) {
2361da177e4SLinus Torvalds dev_kfree_skb_any(iovb);
2371da177e4SLinus Torvalds j++;
2381da177e4SLinus Torvalds }
2391da177e4SLinus Torvalds PRINTK("nicstar%d: %d iovec buffers freed.\n", i, j);
2401da177e4SLinus Torvalds while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL)
2411da177e4SLinus Torvalds dev_kfree_skb_any(lb);
2421da177e4SLinus Torvalds while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL)
2431da177e4SLinus Torvalds dev_kfree_skb_any(sb);
244864a3ff6Schas williams - CONTRACTOR free_scq(card, card->scq0, NULL);
245098fde11Schas williams - CONTRACTOR for (j = 0; j < NS_FRSCD_NUM; j++) {
2461da177e4SLinus Torvalds if (card->scd2vc[j] != NULL)
247864a3ff6Schas williams - CONTRACTOR free_scq(card, card->scd2vc[j]->scq, card->scd2vc[j]->tx_vcc);
2481da177e4SLinus Torvalds }
249864a3ff6Schas williams - CONTRACTOR idr_destroy(&card->idr);
250ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&card->pcidev->dev, NS_RSQSIZE + NS_RSQ_ALIGNMENT,
251864a3ff6Schas williams - CONTRACTOR card->rsq.org, card->rsq.dma);
252ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&card->pcidev->dev, NS_TSQSIZE + NS_TSQ_ALIGNMENT,
253864a3ff6Schas williams - CONTRACTOR card->tsq.org, card->tsq.dma);
2541da177e4SLinus Torvalds free_irq(card->pcidev->irq, card);
2551da177e4SLinus Torvalds iounmap(card->membase);
2561da177e4SLinus Torvalds kfree(card);
2571da177e4SLinus Torvalds }
2581da177e4SLinus Torvalds
2592f3e2604SArvind Yadav static const struct pci_device_id nicstar_pci_tbl[] = {
2606df7b80cSPeter Huewe { PCI_VDEVICE(IDT, PCI_DEVICE_ID_IDT_IDT77201), 0 },
2611da177e4SLinus Torvalds {0,} /* terminate list */
2621da177e4SLinus Torvalds };
263098fde11Schas williams - CONTRACTOR
2641da177e4SLinus Torvalds MODULE_DEVICE_TABLE(pci, nicstar_pci_tbl);
2651da177e4SLinus Torvalds
2661da177e4SLinus Torvalds static struct pci_driver nicstar_driver = {
2671da177e4SLinus Torvalds .name = "nicstar",
2681da177e4SLinus Torvalds .id_table = nicstar_pci_tbl,
2691da177e4SLinus Torvalds .probe = nicstar_init_one,
2706c44512dSGreg Kroah-Hartman .remove = nicstar_remove_one,
2711da177e4SLinus Torvalds };
2721da177e4SLinus Torvalds
nicstar_init(void)2731da177e4SLinus Torvalds static int __init nicstar_init(void)
2741da177e4SLinus Torvalds {
2751da177e4SLinus Torvalds unsigned error = 0; /* Initialized to remove compile warning */
2761da177e4SLinus Torvalds
2771da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_init() called.\n");
2781da177e4SLinus Torvalds
2791da177e4SLinus Torvalds error = pci_register_driver(&nicstar_driver);
2801da177e4SLinus Torvalds
2811da177e4SLinus Torvalds TXPRINTK("nicstar: TX debug enabled.\n");
2821da177e4SLinus Torvalds RXPRINTK("nicstar: RX debug enabled.\n");
2831da177e4SLinus Torvalds PRINTK("nicstar: General debug enabled.\n");
2841da177e4SLinus Torvalds #ifdef PHY_LOOPBACK
2851da177e4SLinus Torvalds printk("nicstar: using PHY loopback.\n");
2861da177e4SLinus Torvalds #endif /* PHY_LOOPBACK */
2871da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_init() returned.\n");
2881da177e4SLinus Torvalds
2891da177e4SLinus Torvalds if (!error) {
290e99e88a9SKees Cook timer_setup(&ns_timer, ns_poll, 0);
2911da177e4SLinus Torvalds ns_timer.expires = jiffies + NS_POLL_PERIOD;
2921da177e4SLinus Torvalds add_timer(&ns_timer);
2931da177e4SLinus Torvalds }
2941da177e4SLinus Torvalds
2951da177e4SLinus Torvalds return error;
2961da177e4SLinus Torvalds }
2971da177e4SLinus Torvalds
nicstar_cleanup(void)2981da177e4SLinus Torvalds static void __exit nicstar_cleanup(void)
2991da177e4SLinus Torvalds {
3001da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_cleanup() called.\n");
3011da177e4SLinus Torvalds
30234e7434bSZou Wei del_timer_sync(&ns_timer);
3031da177e4SLinus Torvalds
3041da177e4SLinus Torvalds pci_unregister_driver(&nicstar_driver);
3051da177e4SLinus Torvalds
3061da177e4SLinus Torvalds XPRINTK("nicstar: nicstar_cleanup() returned.\n");
3071da177e4SLinus Torvalds }
3081da177e4SLinus Torvalds
ns_read_sram(ns_dev * card,u32 sram_address)3091da177e4SLinus Torvalds static u32 ns_read_sram(ns_dev * card, u32 sram_address)
3101da177e4SLinus Torvalds {
3111da177e4SLinus Torvalds unsigned long flags;
3121da177e4SLinus Torvalds u32 data;
3131da177e4SLinus Torvalds sram_address <<= 2;
3141da177e4SLinus Torvalds sram_address &= 0x0007FFFC; /* address must be dword aligned */
3151da177e4SLinus Torvalds sram_address |= 0x50000000; /* SRAM read command */
31636ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags);
3171da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
3181da177e4SLinus Torvalds writel(sram_address, card->membase + CMD);
3191da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
3201da177e4SLinus Torvalds data = readl(card->membase + DR0);
3211da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags);
3221da177e4SLinus Torvalds return data;
3231da177e4SLinus Torvalds }
3241da177e4SLinus Torvalds
ns_write_sram(ns_dev * card,u32 sram_address,u32 * value,int count)325098fde11Schas williams - CONTRACTOR static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value,
326098fde11Schas williams - CONTRACTOR int count)
3271da177e4SLinus Torvalds {
3281da177e4SLinus Torvalds unsigned long flags;
3291da177e4SLinus Torvalds int i, c;
3301da177e4SLinus Torvalds count--; /* count range now is 0..3 instead of 1..4 */
3311da177e4SLinus Torvalds c = count;
3321da177e4SLinus Torvalds c <<= 2; /* to use increments of 4 */
33336ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags);
3341da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
3351da177e4SLinus Torvalds for (i = 0; i <= c; i += 4)
3361da177e4SLinus Torvalds writel(*(value++), card->membase + i);
3371da177e4SLinus Torvalds /* Note: DR# registers are the first 4 dwords in nicstar's memspace,
3381da177e4SLinus Torvalds so card->membase + DR0 == card->membase */
3391da177e4SLinus Torvalds sram_address <<= 2;
3401da177e4SLinus Torvalds sram_address &= 0x0007FFFC;
3411da177e4SLinus Torvalds sram_address |= (0x40000000 | count);
3421da177e4SLinus Torvalds writel(sram_address, card->membase + CMD);
3431da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags);
3441da177e4SLinus Torvalds }
3451da177e4SLinus Torvalds
ns_init_card(int i,struct pci_dev * pcidev)3466c44512dSGreg Kroah-Hartman static int ns_init_card(int i, struct pci_dev *pcidev)
3471da177e4SLinus Torvalds {
3481da177e4SLinus Torvalds int j;
3491da177e4SLinus Torvalds struct ns_dev *card = NULL;
3501da177e4SLinus Torvalds unsigned char pci_latency;
3511da177e4SLinus Torvalds unsigned error;
3521da177e4SLinus Torvalds u32 data;
3531da177e4SLinus Torvalds u32 u32d[4];
3541da177e4SLinus Torvalds u32 ns_cfg_rctsize;
3551da177e4SLinus Torvalds int bcount;
3561da177e4SLinus Torvalds unsigned long membase;
3571da177e4SLinus Torvalds
3581da177e4SLinus Torvalds error = 0;
3591da177e4SLinus Torvalds
360098fde11Schas williams - CONTRACTOR if (pci_enable_device(pcidev)) {
3611da177e4SLinus Torvalds printk("nicstar%d: can't enable PCI device\n", i);
3621da177e4SLinus Torvalds error = 2;
3631da177e4SLinus Torvalds ns_init_card_error(card, error);
3641da177e4SLinus Torvalds return error;
3651da177e4SLinus Torvalds }
366ede58ef2Schas williams - CONTRACTOR if (dma_set_mask_and_coherent(&pcidev->dev, DMA_BIT_MASK(32)) != 0) {
367864a3ff6Schas williams - CONTRACTOR printk(KERN_WARNING
368864a3ff6Schas williams - CONTRACTOR "nicstar%d: No suitable DMA available.\n", i);
369864a3ff6Schas williams - CONTRACTOR error = 2;
370864a3ff6Schas williams - CONTRACTOR ns_init_card_error(card, error);
371864a3ff6Schas williams - CONTRACTOR return error;
372864a3ff6Schas williams - CONTRACTOR }
3731da177e4SLinus Torvalds
374304f0a4eSMarkus Elfring card = kmalloc(sizeof(*card), GFP_KERNEL);
375304f0a4eSMarkus Elfring if (!card) {
376098fde11Schas williams - CONTRACTOR printk
377098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate memory for device structure.\n",
378098fde11Schas williams - CONTRACTOR i);
3791da177e4SLinus Torvalds error = 2;
3801da177e4SLinus Torvalds ns_init_card_error(card, error);
3811da177e4SLinus Torvalds return error;
3821da177e4SLinus Torvalds }
3831da177e4SLinus Torvalds cards[i] = card;
3841da177e4SLinus Torvalds spin_lock_init(&card->int_lock);
3851da177e4SLinus Torvalds spin_lock_init(&card->res_lock);
3861da177e4SLinus Torvalds
3871da177e4SLinus Torvalds pci_set_drvdata(pcidev, card);
3881da177e4SLinus Torvalds
3891da177e4SLinus Torvalds card->index = i;
3901da177e4SLinus Torvalds card->atmdev = NULL;
3911da177e4SLinus Torvalds card->pcidev = pcidev;
3921da177e4SLinus Torvalds membase = pci_resource_start(pcidev, 1);
3931da177e4SLinus Torvalds card->membase = ioremap(membase, NS_IOREMAP_SIZE);
394098fde11Schas williams - CONTRACTOR if (!card->membase) {
3951da177e4SLinus Torvalds printk("nicstar%d: can't ioremap() membase.\n", i);
3961da177e4SLinus Torvalds error = 3;
3971da177e4SLinus Torvalds ns_init_card_error(card, error);
3981da177e4SLinus Torvalds return error;
3991da177e4SLinus Torvalds }
400864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: membase at 0x%p.\n", i, card->membase);
4011da177e4SLinus Torvalds
4021da177e4SLinus Torvalds pci_set_master(pcidev);
4031da177e4SLinus Torvalds
404098fde11Schas williams - CONTRACTOR if (pci_read_config_byte(pcidev, PCI_LATENCY_TIMER, &pci_latency) != 0) {
4051da177e4SLinus Torvalds printk("nicstar%d: can't read PCI latency timer.\n", i);
4061da177e4SLinus Torvalds error = 6;
4071da177e4SLinus Torvalds ns_init_card_error(card, error);
4081da177e4SLinus Torvalds return error;
4091da177e4SLinus Torvalds }
4101da177e4SLinus Torvalds #ifdef NS_PCI_LATENCY
411098fde11Schas williams - CONTRACTOR if (pci_latency < NS_PCI_LATENCY) {
412098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: setting PCI latency timer to %d.\n", i,
413098fde11Schas williams - CONTRACTOR NS_PCI_LATENCY);
414098fde11Schas williams - CONTRACTOR for (j = 1; j < 4; j++) {
415098fde11Schas williams - CONTRACTOR if (pci_write_config_byte
416098fde11Schas williams - CONTRACTOR (pcidev, PCI_LATENCY_TIMER, NS_PCI_LATENCY) != 0)
4171da177e4SLinus Torvalds break;
4181da177e4SLinus Torvalds }
419098fde11Schas williams - CONTRACTOR if (j == 4) {
420098fde11Schas williams - CONTRACTOR printk
421098fde11Schas williams - CONTRACTOR ("nicstar%d: can't set PCI latency timer to %d.\n",
422098fde11Schas williams - CONTRACTOR i, NS_PCI_LATENCY);
4231da177e4SLinus Torvalds error = 7;
4241da177e4SLinus Torvalds ns_init_card_error(card, error);
4251da177e4SLinus Torvalds return error;
4261da177e4SLinus Torvalds }
4271da177e4SLinus Torvalds }
4281da177e4SLinus Torvalds #endif /* NS_PCI_LATENCY */
4291da177e4SLinus Torvalds
4301da177e4SLinus Torvalds /* Clear timer overflow */
4311da177e4SLinus Torvalds data = readl(card->membase + STAT);
4321da177e4SLinus Torvalds if (data & NS_STAT_TMROF)
4331da177e4SLinus Torvalds writel(NS_STAT_TMROF, card->membase + STAT);
4341da177e4SLinus Torvalds
4351da177e4SLinus Torvalds /* Software reset */
4361da177e4SLinus Torvalds writel(NS_CFG_SWRST, card->membase + CFG);
4371da177e4SLinus Torvalds NS_DELAY;
4381da177e4SLinus Torvalds writel(0x00000000, card->membase + CFG);
4391da177e4SLinus Torvalds
4401da177e4SLinus Torvalds /* PHY reset */
4411da177e4SLinus Torvalds writel(0x00000008, card->membase + GP);
4421da177e4SLinus Torvalds NS_DELAY;
4431da177e4SLinus Torvalds writel(0x00000001, card->membase + GP);
4441da177e4SLinus Torvalds NS_DELAY;
4451da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
4461da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000100, card->membase + CMD); /* Sync UTOPIA with SAR clock */
4471da177e4SLinus Torvalds NS_DELAY;
4481da177e4SLinus Torvalds
4491da177e4SLinus Torvalds /* Detect PHY type */
4501da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
4511da177e4SLinus Torvalds writel(NS_CMD_READ_UTILITY | 0x00000200, card->membase + CMD);
4521da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
4531da177e4SLinus Torvalds data = readl(card->membase + DR0);
4541da177e4SLinus Torvalds switch (data) {
4551da177e4SLinus Torvalds case 0x00000009:
4561da177e4SLinus Torvalds printk("nicstar%d: PHY seems to be 25 Mbps.\n", i);
4571da177e4SLinus Torvalds card->max_pcr = ATM_25_PCR;
4581da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
4591da177e4SLinus Torvalds writel(0x00000008, card->membase + DR0);
4601da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000200, card->membase + CMD);
4611da177e4SLinus Torvalds /* Clear an eventual pending interrupt */
4621da177e4SLinus Torvalds writel(NS_STAT_SFBQF, card->membase + STAT);
4631da177e4SLinus Torvalds #ifdef PHY_LOOPBACK
4641da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
4651da177e4SLinus Torvalds writel(0x00000022, card->membase + DR0);
4661da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000202, card->membase + CMD);
4671da177e4SLinus Torvalds #endif /* PHY_LOOPBACK */
4681da177e4SLinus Torvalds break;
4691da177e4SLinus Torvalds case 0x00000030:
4701da177e4SLinus Torvalds case 0x00000031:
4711da177e4SLinus Torvalds printk("nicstar%d: PHY seems to be 155 Mbps.\n", i);
4721da177e4SLinus Torvalds card->max_pcr = ATM_OC3_PCR;
4731da177e4SLinus Torvalds #ifdef PHY_LOOPBACK
4741da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
4751da177e4SLinus Torvalds writel(0x00000002, card->membase + DR0);
4761da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000205, card->membase + CMD);
4771da177e4SLinus Torvalds #endif /* PHY_LOOPBACK */
4781da177e4SLinus Torvalds break;
4791da177e4SLinus Torvalds default:
4801da177e4SLinus Torvalds printk("nicstar%d: unknown PHY type (0x%08X).\n", i, data);
4811da177e4SLinus Torvalds error = 8;
4821da177e4SLinus Torvalds ns_init_card_error(card, error);
4831da177e4SLinus Torvalds return error;
4841da177e4SLinus Torvalds }
4851da177e4SLinus Torvalds writel(0x00000000, card->membase + GP);
4861da177e4SLinus Torvalds
4871da177e4SLinus Torvalds /* Determine SRAM size */
4881da177e4SLinus Torvalds data = 0x76543210;
4891da177e4SLinus Torvalds ns_write_sram(card, 0x1C003, &data, 1);
4901da177e4SLinus Torvalds data = 0x89ABCDEF;
4911da177e4SLinus Torvalds ns_write_sram(card, 0x14003, &data, 1);
4921da177e4SLinus Torvalds if (ns_read_sram(card, 0x14003) == 0x89ABCDEF &&
4931da177e4SLinus Torvalds ns_read_sram(card, 0x1C003) == 0x76543210)
4941da177e4SLinus Torvalds card->sram_size = 128;
4951da177e4SLinus Torvalds else
4961da177e4SLinus Torvalds card->sram_size = 32;
4971da177e4SLinus Torvalds PRINTK("nicstar%d: %dK x 32bit SRAM size.\n", i, card->sram_size);
4981da177e4SLinus Torvalds
4991da177e4SLinus Torvalds card->rct_size = NS_MAX_RCTSIZE;
5001da177e4SLinus Torvalds
5011da177e4SLinus Torvalds #if (NS_MAX_RCTSIZE == 4096)
5021da177e4SLinus Torvalds if (card->sram_size == 128)
503098fde11Schas williams - CONTRACTOR printk
504098fde11Schas williams - CONTRACTOR ("nicstar%d: limiting maximum VCI. See NS_MAX_RCTSIZE in nicstar.h\n",
505098fde11Schas williams - CONTRACTOR i);
5061da177e4SLinus Torvalds #elif (NS_MAX_RCTSIZE == 16384)
507098fde11Schas williams - CONTRACTOR if (card->sram_size == 32) {
508098fde11Schas williams - CONTRACTOR printk
509098fde11Schas williams - CONTRACTOR ("nicstar%d: wasting memory. See NS_MAX_RCTSIZE in nicstar.h\n",
510098fde11Schas williams - CONTRACTOR i);
5111da177e4SLinus Torvalds card->rct_size = 4096;
5121da177e4SLinus Torvalds }
5131da177e4SLinus Torvalds #else
5141da177e4SLinus Torvalds #error NS_MAX_RCTSIZE must be either 4096 or 16384 in nicstar.c
5151da177e4SLinus Torvalds #endif
5161da177e4SLinus Torvalds
5171da177e4SLinus Torvalds card->vpibits = NS_VPIBITS;
5181da177e4SLinus Torvalds if (card->rct_size == 4096)
5191da177e4SLinus Torvalds card->vcibits = 12 - NS_VPIBITS;
5201da177e4SLinus Torvalds else /* card->rct_size == 16384 */
5211da177e4SLinus Torvalds card->vcibits = 14 - NS_VPIBITS;
5221da177e4SLinus Torvalds
5231da177e4SLinus Torvalds /* Initialize the nicstar eeprom/eprom stuff, for the MAC addr */
5241da177e4SLinus Torvalds if (mac[i] == NULL)
5251da177e4SLinus Torvalds nicstar_init_eprom(card->membase);
5261da177e4SLinus Torvalds
5271da177e4SLinus Torvalds /* Set the VPI/VCI MSb mask to zero so we can receive OAM cells */
5281da177e4SLinus Torvalds writel(0x00000000, card->membase + VPM);
5291da177e4SLinus Torvalds
53070b639dcSZheyu Ma card->intcnt = 0;
53170b639dcSZheyu Ma if (request_irq
53270b639dcSZheyu Ma (pcidev->irq, &ns_irq_handler, IRQF_SHARED, "nicstar", card) != 0) {
53370b639dcSZheyu Ma pr_err("nicstar%d: can't allocate IRQ %d.\n", i, pcidev->irq);
53470b639dcSZheyu Ma error = 9;
53570b639dcSZheyu Ma ns_init_card_error(card, error);
53670b639dcSZheyu Ma return error;
53770b639dcSZheyu Ma }
53870b639dcSZheyu Ma
5391da177e4SLinus Torvalds /* Initialize TSQ */
540ede58ef2Schas williams - CONTRACTOR card->tsq.org = dma_alloc_coherent(&card->pcidev->dev,
541864a3ff6Schas williams - CONTRACTOR NS_TSQSIZE + NS_TSQ_ALIGNMENT,
542ede58ef2Schas williams - CONTRACTOR &card->tsq.dma, GFP_KERNEL);
543098fde11Schas williams - CONTRACTOR if (card->tsq.org == NULL) {
5441da177e4SLinus Torvalds printk("nicstar%d: can't allocate TSQ.\n", i);
5451da177e4SLinus Torvalds error = 10;
5461da177e4SLinus Torvalds ns_init_card_error(card, error);
5471da177e4SLinus Torvalds return error;
5481da177e4SLinus Torvalds }
549864a3ff6Schas williams - CONTRACTOR card->tsq.base = PTR_ALIGN(card->tsq.org, NS_TSQ_ALIGNMENT);
5501da177e4SLinus Torvalds card->tsq.next = card->tsq.base;
5511da177e4SLinus Torvalds card->tsq.last = card->tsq.base + (NS_TSQ_NUM_ENTRIES - 1);
5521da177e4SLinus Torvalds for (j = 0; j < NS_TSQ_NUM_ENTRIES; j++)
5531da177e4SLinus Torvalds ns_tsi_init(card->tsq.base + j);
5541da177e4SLinus Torvalds writel(0x00000000, card->membase + TSQH);
555864a3ff6Schas williams - CONTRACTOR writel(ALIGN(card->tsq.dma, NS_TSQ_ALIGNMENT), card->membase + TSQB);
556864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: TSQ base at 0x%p.\n", i, card->tsq.base);
5571da177e4SLinus Torvalds
5581da177e4SLinus Torvalds /* Initialize RSQ */
559ede58ef2Schas williams - CONTRACTOR card->rsq.org = dma_alloc_coherent(&card->pcidev->dev,
560864a3ff6Schas williams - CONTRACTOR NS_RSQSIZE + NS_RSQ_ALIGNMENT,
561ede58ef2Schas williams - CONTRACTOR &card->rsq.dma, GFP_KERNEL);
562098fde11Schas williams - CONTRACTOR if (card->rsq.org == NULL) {
5631da177e4SLinus Torvalds printk("nicstar%d: can't allocate RSQ.\n", i);
5641da177e4SLinus Torvalds error = 11;
5651da177e4SLinus Torvalds ns_init_card_error(card, error);
5661da177e4SLinus Torvalds return error;
5671da177e4SLinus Torvalds }
568864a3ff6Schas williams - CONTRACTOR card->rsq.base = PTR_ALIGN(card->rsq.org, NS_RSQ_ALIGNMENT);
5691da177e4SLinus Torvalds card->rsq.next = card->rsq.base;
5701da177e4SLinus Torvalds card->rsq.last = card->rsq.base + (NS_RSQ_NUM_ENTRIES - 1);
5711da177e4SLinus Torvalds for (j = 0; j < NS_RSQ_NUM_ENTRIES; j++)
5721da177e4SLinus Torvalds ns_rsqe_init(card->rsq.base + j);
5731da177e4SLinus Torvalds writel(0x00000000, card->membase + RSQH);
574864a3ff6Schas williams - CONTRACTOR writel(ALIGN(card->rsq.dma, NS_RSQ_ALIGNMENT), card->membase + RSQB);
575864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: RSQ base at 0x%p.\n", i, card->rsq.base);
5761da177e4SLinus Torvalds
5771da177e4SLinus Torvalds /* Initialize SCQ0, the only VBR SCQ used */
578a2c1aa54SJesper Juhl card->scq1 = NULL;
579a2c1aa54SJesper Juhl card->scq2 = NULL;
580864a3ff6Schas williams - CONTRACTOR card->scq0 = get_scq(card, VBR_SCQSIZE, NS_VRSCD0);
581098fde11Schas williams - CONTRACTOR if (card->scq0 == NULL) {
5821da177e4SLinus Torvalds printk("nicstar%d: can't get SCQ0.\n", i);
5831da177e4SLinus Torvalds error = 12;
5841da177e4SLinus Torvalds ns_init_card_error(card, error);
5851da177e4SLinus Torvalds return error;
5861da177e4SLinus Torvalds }
587864a3ff6Schas williams - CONTRACTOR u32d[0] = scq_virt_to_bus(card->scq0, card->scq0->base);
5881da177e4SLinus Torvalds u32d[1] = (u32) 0x00000000;
5891da177e4SLinus Torvalds u32d[2] = (u32) 0xffffffff;
5901da177e4SLinus Torvalds u32d[3] = (u32) 0x00000000;
5911da177e4SLinus Torvalds ns_write_sram(card, NS_VRSCD0, u32d, 4);
5921da177e4SLinus Torvalds ns_write_sram(card, NS_VRSCD1, u32d, 4); /* These last two won't be used */
5931da177e4SLinus Torvalds ns_write_sram(card, NS_VRSCD2, u32d, 4); /* but are initialized, just in case... */
5941da177e4SLinus Torvalds card->scq0->scd = NS_VRSCD0;
595864a3ff6Schas williams - CONTRACTOR PRINTK("nicstar%d: VBR-SCQ0 base at 0x%p.\n", i, card->scq0->base);
5961da177e4SLinus Torvalds
5971da177e4SLinus Torvalds /* Initialize TSTs */
5981da177e4SLinus Torvalds card->tst_addr = NS_TST0;
5991da177e4SLinus Torvalds card->tst_free_entries = NS_TST_NUM_ENTRIES;
6001da177e4SLinus Torvalds data = NS_TST_OPCODE_VARIABLE;
6011da177e4SLinus Torvalds for (j = 0; j < NS_TST_NUM_ENTRIES; j++)
6021da177e4SLinus Torvalds ns_write_sram(card, NS_TST0 + j, &data, 1);
6031da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_END, NS_TST0);
6041da177e4SLinus Torvalds ns_write_sram(card, NS_TST0 + NS_TST_NUM_ENTRIES, &data, 1);
6051da177e4SLinus Torvalds for (j = 0; j < NS_TST_NUM_ENTRIES; j++)
6061da177e4SLinus Torvalds ns_write_sram(card, NS_TST1 + j, &data, 1);
6071da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_END, NS_TST1);
6081da177e4SLinus Torvalds ns_write_sram(card, NS_TST1 + NS_TST_NUM_ENTRIES, &data, 1);
6091da177e4SLinus Torvalds for (j = 0; j < NS_TST_NUM_ENTRIES; j++)
6101da177e4SLinus Torvalds card->tste2vc[j] = NULL;
6111da177e4SLinus Torvalds writel(NS_TST0 << 2, card->membase + TSTB);
6121da177e4SLinus Torvalds
6131da177e4SLinus Torvalds /* Initialize RCT. AAL type is set on opening the VC. */
6141da177e4SLinus Torvalds #ifdef RCQ_SUPPORT
6151da177e4SLinus Torvalds u32d[0] = NS_RCTE_RAWCELLINTEN;
6161da177e4SLinus Torvalds #else
6171da177e4SLinus Torvalds u32d[0] = 0x00000000;
6181da177e4SLinus Torvalds #endif /* RCQ_SUPPORT */
6191da177e4SLinus Torvalds u32d[1] = 0x00000000;
6201da177e4SLinus Torvalds u32d[2] = 0x00000000;
6211da177e4SLinus Torvalds u32d[3] = 0xFFFFFFFF;
6221da177e4SLinus Torvalds for (j = 0; j < card->rct_size; j++)
6231da177e4SLinus Torvalds ns_write_sram(card, j * 4, u32d, 4);
6241da177e4SLinus Torvalds
625ee41f07cSMarkus Elfring memset(card->vcmap, 0, sizeof(card->vcmap));
6261da177e4SLinus Torvalds
6271da177e4SLinus Torvalds for (j = 0; j < NS_FRSCD_NUM; j++)
6281da177e4SLinus Torvalds card->scd2vc[j] = NULL;
6291da177e4SLinus Torvalds
6301da177e4SLinus Torvalds /* Initialize buffer levels */
6311da177e4SLinus Torvalds card->sbnr.min = MIN_SB;
6321da177e4SLinus Torvalds card->sbnr.init = NUM_SB;
6331da177e4SLinus Torvalds card->sbnr.max = MAX_SB;
6341da177e4SLinus Torvalds card->lbnr.min = MIN_LB;
6351da177e4SLinus Torvalds card->lbnr.init = NUM_LB;
6361da177e4SLinus Torvalds card->lbnr.max = MAX_LB;
6371da177e4SLinus Torvalds card->iovnr.min = MIN_IOVB;
6381da177e4SLinus Torvalds card->iovnr.init = NUM_IOVB;
6391da177e4SLinus Torvalds card->iovnr.max = MAX_IOVB;
6401da177e4SLinus Torvalds card->hbnr.min = MIN_HB;
6411da177e4SLinus Torvalds card->hbnr.init = NUM_HB;
6421da177e4SLinus Torvalds card->hbnr.max = MAX_HB;
6431da177e4SLinus Torvalds
644c664d638SDaeseok Youn card->sm_handle = NULL;
6451da177e4SLinus Torvalds card->sm_addr = 0x00000000;
646c664d638SDaeseok Youn card->lg_handle = NULL;
6471da177e4SLinus Torvalds card->lg_addr = 0x00000000;
6481da177e4SLinus Torvalds
6491da177e4SLinus Torvalds card->efbie = 1; /* To prevent push_rxbufs from enabling the interrupt */
6501da177e4SLinus Torvalds
651864a3ff6Schas williams - CONTRACTOR idr_init(&card->idr);
652864a3ff6Schas williams - CONTRACTOR
6531da177e4SLinus Torvalds /* Pre-allocate some huge buffers */
6541da177e4SLinus Torvalds skb_queue_head_init(&card->hbpool.queue);
6551da177e4SLinus Torvalds card->hbpool.count = 0;
656098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_HB; j++) {
6571da177e4SLinus Torvalds struct sk_buff *hb;
6581da177e4SLinus Torvalds hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL);
659098fde11Schas williams - CONTRACTOR if (hb == NULL) {
660098fde11Schas williams - CONTRACTOR printk
661098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d huge buffers.\n",
6621da177e4SLinus Torvalds i, j, NUM_HB);
6631da177e4SLinus Torvalds error = 13;
6641da177e4SLinus Torvalds ns_init_card_error(card, error);
6651da177e4SLinus Torvalds return error;
6661da177e4SLinus Torvalds }
667864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(hb) = BUF_NONE;
6681da177e4SLinus Torvalds skb_queue_tail(&card->hbpool.queue, hb);
6691da177e4SLinus Torvalds card->hbpool.count++;
6701da177e4SLinus Torvalds }
6711da177e4SLinus Torvalds
6721da177e4SLinus Torvalds /* Allocate large buffers */
6731da177e4SLinus Torvalds skb_queue_head_init(&card->lbpool.queue);
6741da177e4SLinus Torvalds card->lbpool.count = 0; /* Not used */
675098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_LB; j++) {
6761da177e4SLinus Torvalds struct sk_buff *lb;
6771da177e4SLinus Torvalds lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL);
678098fde11Schas williams - CONTRACTOR if (lb == NULL) {
679098fde11Schas williams - CONTRACTOR printk
680098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d large buffers.\n",
6811da177e4SLinus Torvalds i, j, NUM_LB);
6821da177e4SLinus Torvalds error = 14;
6831da177e4SLinus Torvalds ns_init_card_error(card, error);
6841da177e4SLinus Torvalds return error;
6851da177e4SLinus Torvalds }
686864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(lb) = BUF_LG;
6871da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, lb);
6881da177e4SLinus Torvalds skb_reserve(lb, NS_SMBUFSIZE);
6898728b834SDavid S. Miller push_rxbufs(card, lb);
6901da177e4SLinus Torvalds /* Due to the implementation of push_rxbufs() this is 1, not 0 */
691098fde11Schas williams - CONTRACTOR if (j == 1) {
6921da177e4SLinus Torvalds card->rcbuf = lb;
693864a3ff6Schas williams - CONTRACTOR card->rawcell = (struct ns_rcqe *) lb->data;
694864a3ff6Schas williams - CONTRACTOR card->rawch = NS_PRV_DMA(lb);
6951da177e4SLinus Torvalds }
6961da177e4SLinus Torvalds }
6971da177e4SLinus Torvalds /* Test for strange behaviour which leads to crashes */
698098fde11Schas williams - CONTRACTOR if ((bcount =
699098fde11Schas williams - CONTRACTOR ns_stat_lfbqc_get(readl(card->membase + STAT))) < card->lbnr.min) {
700098fde11Schas williams - CONTRACTOR printk
701098fde11Schas williams - CONTRACTOR ("nicstar%d: Strange... Just allocated %d large buffers and lfbqc = %d.\n",
7021da177e4SLinus Torvalds i, j, bcount);
7031da177e4SLinus Torvalds error = 14;
7041da177e4SLinus Torvalds ns_init_card_error(card, error);
7051da177e4SLinus Torvalds return error;
7061da177e4SLinus Torvalds }
7071da177e4SLinus Torvalds
7081da177e4SLinus Torvalds /* Allocate small buffers */
7091da177e4SLinus Torvalds skb_queue_head_init(&card->sbpool.queue);
7101da177e4SLinus Torvalds card->sbpool.count = 0; /* Not used */
711098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_SB; j++) {
7121da177e4SLinus Torvalds struct sk_buff *sb;
7131da177e4SLinus Torvalds sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL);
714098fde11Schas williams - CONTRACTOR if (sb == NULL) {
715098fde11Schas williams - CONTRACTOR printk
716098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d small buffers.\n",
7171da177e4SLinus Torvalds i, j, NUM_SB);
7181da177e4SLinus Torvalds error = 15;
7191da177e4SLinus Torvalds ns_init_card_error(card, error);
7201da177e4SLinus Torvalds return error;
7211da177e4SLinus Torvalds }
722864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(sb) = BUF_SM;
7231da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, sb);
7241da177e4SLinus Torvalds skb_reserve(sb, NS_AAL0_HEADER);
7258728b834SDavid S. Miller push_rxbufs(card, sb);
7261da177e4SLinus Torvalds }
7271da177e4SLinus Torvalds /* Test for strange behaviour which leads to crashes */
728098fde11Schas williams - CONTRACTOR if ((bcount =
729098fde11Schas williams - CONTRACTOR ns_stat_sfbqc_get(readl(card->membase + STAT))) < card->sbnr.min) {
730098fde11Schas williams - CONTRACTOR printk
731098fde11Schas williams - CONTRACTOR ("nicstar%d: Strange... Just allocated %d small buffers and sfbqc = %d.\n",
7321da177e4SLinus Torvalds i, j, bcount);
7331da177e4SLinus Torvalds error = 15;
7341da177e4SLinus Torvalds ns_init_card_error(card, error);
7351da177e4SLinus Torvalds return error;
7361da177e4SLinus Torvalds }
7371da177e4SLinus Torvalds
7381da177e4SLinus Torvalds /* Allocate iovec buffers */
7391da177e4SLinus Torvalds skb_queue_head_init(&card->iovpool.queue);
7401da177e4SLinus Torvalds card->iovpool.count = 0;
741098fde11Schas williams - CONTRACTOR for (j = 0; j < NUM_IOVB; j++) {
7421da177e4SLinus Torvalds struct sk_buff *iovb;
7431da177e4SLinus Torvalds iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL);
744098fde11Schas williams - CONTRACTOR if (iovb == NULL) {
745098fde11Schas williams - CONTRACTOR printk
746098fde11Schas williams - CONTRACTOR ("nicstar%d: can't allocate %dth of %d iovec buffers.\n",
7471da177e4SLinus Torvalds i, j, NUM_IOVB);
7481da177e4SLinus Torvalds error = 16;
7491da177e4SLinus Torvalds ns_init_card_error(card, error);
7501da177e4SLinus Torvalds return error;
7511da177e4SLinus Torvalds }
752864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE;
7531da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, iovb);
7541da177e4SLinus Torvalds card->iovpool.count++;
7551da177e4SLinus Torvalds }
7561da177e4SLinus Torvalds
7571da177e4SLinus Torvalds /* Configure NICStAR */
7581da177e4SLinus Torvalds if (card->rct_size == 4096)
7591da177e4SLinus Torvalds ns_cfg_rctsize = NS_CFG_RCTSIZE_4096_ENTRIES;
7601da177e4SLinus Torvalds else /* (card->rct_size == 16384) */
7611da177e4SLinus Torvalds ns_cfg_rctsize = NS_CFG_RCTSIZE_16384_ENTRIES;
7621da177e4SLinus Torvalds
7631da177e4SLinus Torvalds card->efbie = 1;
7641da177e4SLinus Torvalds
7651da177e4SLinus Torvalds /* Register device */
766d9ca676bSDan Williams card->atmdev = atm_dev_register("nicstar", &card->pcidev->dev, &atm_ops,
767d9ca676bSDan Williams -1, NULL);
768098fde11Schas williams - CONTRACTOR if (card->atmdev == NULL) {
7691da177e4SLinus Torvalds printk("nicstar%d: can't register device.\n", i);
7701da177e4SLinus Torvalds error = 17;
7711da177e4SLinus Torvalds ns_init_card_error(card, error);
7721da177e4SLinus Torvalds return error;
7731da177e4SLinus Torvalds }
7741da177e4SLinus Torvalds
775d2bb3905SAndy Shevchenko if (mac[i] == NULL || !mac_pton(mac[i], card->atmdev->esi)) {
7761da177e4SLinus Torvalds nicstar_read_eprom(card->membase, NICSTAR_EPROM_MAC_ADDR_OFFSET,
7771da177e4SLinus Torvalds card->atmdev->esi, 6);
7784c55a462Sdingtianhong if (ether_addr_equal(card->atmdev->esi, "\x00\x00\x00\x00\x00\x00")) {
779098fde11Schas williams - CONTRACTOR nicstar_read_eprom(card->membase,
780098fde11Schas williams - CONTRACTOR NICSTAR_EPROM_MAC_ADDR_OFFSET_ALT,
7811da177e4SLinus Torvalds card->atmdev->esi, 6);
7821da177e4SLinus Torvalds }
7831da177e4SLinus Torvalds }
7841da177e4SLinus Torvalds
7851154b299Shartleys printk("nicstar%d: MAC address %pM\n", i, card->atmdev->esi);
7861da177e4SLinus Torvalds
7871da177e4SLinus Torvalds card->atmdev->dev_data = card;
7881da177e4SLinus Torvalds card->atmdev->ci_range.vpi_bits = card->vpibits;
7891da177e4SLinus Torvalds card->atmdev->ci_range.vci_bits = card->vcibits;
7901da177e4SLinus Torvalds card->atmdev->link_rate = card->max_pcr;
7911da177e4SLinus Torvalds card->atmdev->phy = NULL;
7921da177e4SLinus Torvalds
7931da177e4SLinus Torvalds #ifdef CONFIG_ATM_NICSTAR_USE_SUNI
7941da177e4SLinus Torvalds if (card->max_pcr == ATM_OC3_PCR)
7951da177e4SLinus Torvalds suni_init(card->atmdev);
7961da177e4SLinus Torvalds #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */
7971da177e4SLinus Torvalds
7981da177e4SLinus Torvalds #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105
7991da177e4SLinus Torvalds if (card->max_pcr == ATM_25_PCR)
8001da177e4SLinus Torvalds idt77105_init(card->atmdev);
8011da177e4SLinus Torvalds #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */
8021da177e4SLinus Torvalds
8031da177e4SLinus Torvalds if (card->atmdev->phy && card->atmdev->phy->start)
8041da177e4SLinus Torvalds card->atmdev->phy->start(card->atmdev);
8051da177e4SLinus Torvalds
806098fde11Schas 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 */
807098fde11Schas williams - CONTRACTOR NS_CFG_RSQAFIE | NS_CFG_TXEN | NS_CFG_TXIE | NS_CFG_TSQFIE_OPT | /* Only enabled if ENABLE_TSQFIE */
808098fde11Schas williams - CONTRACTOR NS_CFG_PHYIE, card->membase + CFG);
8091da177e4SLinus Torvalds
8101da177e4SLinus Torvalds num_cards++;
8111da177e4SLinus Torvalds
8121da177e4SLinus Torvalds return error;
8131da177e4SLinus Torvalds }
8141da177e4SLinus Torvalds
ns_init_card_error(ns_dev * card,int error)8156c44512dSGreg Kroah-Hartman static void ns_init_card_error(ns_dev *card, int error)
8161da177e4SLinus Torvalds {
817098fde11Schas williams - CONTRACTOR if (error >= 17) {
8181da177e4SLinus Torvalds writel(0x00000000, card->membase + CFG);
8191da177e4SLinus Torvalds }
820098fde11Schas williams - CONTRACTOR if (error >= 16) {
8211da177e4SLinus Torvalds struct sk_buff *iovb;
8221da177e4SLinus Torvalds while ((iovb = skb_dequeue(&card->iovpool.queue)) != NULL)
8231da177e4SLinus Torvalds dev_kfree_skb_any(iovb);
8241da177e4SLinus Torvalds }
825098fde11Schas williams - CONTRACTOR if (error >= 15) {
8261da177e4SLinus Torvalds struct sk_buff *sb;
8271da177e4SLinus Torvalds while ((sb = skb_dequeue(&card->sbpool.queue)) != NULL)
8281da177e4SLinus Torvalds dev_kfree_skb_any(sb);
829864a3ff6Schas williams - CONTRACTOR free_scq(card, card->scq0, NULL);
8301da177e4SLinus Torvalds }
831098fde11Schas williams - CONTRACTOR if (error >= 14) {
8321da177e4SLinus Torvalds struct sk_buff *lb;
8331da177e4SLinus Torvalds while ((lb = skb_dequeue(&card->lbpool.queue)) != NULL)
8341da177e4SLinus Torvalds dev_kfree_skb_any(lb);
8351da177e4SLinus Torvalds }
836098fde11Schas williams - CONTRACTOR if (error >= 13) {
8371da177e4SLinus Torvalds struct sk_buff *hb;
8381da177e4SLinus Torvalds while ((hb = skb_dequeue(&card->hbpool.queue)) != NULL)
8391da177e4SLinus Torvalds dev_kfree_skb_any(hb);
8401da177e4SLinus Torvalds }
841098fde11Schas williams - CONTRACTOR if (error >= 12) {
8426a1e5a4aSZheyu Ma dma_free_coherent(&card->pcidev->dev, NS_RSQSIZE + NS_RSQ_ALIGNMENT,
8436a1e5a4aSZheyu Ma card->rsq.org, card->rsq.dma);
8441da177e4SLinus Torvalds }
845098fde11Schas williams - CONTRACTOR if (error >= 11) {
8466a1e5a4aSZheyu Ma dma_free_coherent(&card->pcidev->dev, NS_TSQSIZE + NS_TSQ_ALIGNMENT,
8476a1e5a4aSZheyu Ma card->tsq.org, card->tsq.dma);
8481da177e4SLinus Torvalds }
849098fde11Schas williams - CONTRACTOR if (error >= 10) {
8501da177e4SLinus Torvalds free_irq(card->pcidev->irq, card);
8511da177e4SLinus Torvalds }
852098fde11Schas williams - CONTRACTOR if (error >= 4) {
8531da177e4SLinus Torvalds iounmap(card->membase);
8541da177e4SLinus Torvalds }
855098fde11Schas williams - CONTRACTOR if (error >= 3) {
8561da177e4SLinus Torvalds pci_disable_device(card->pcidev);
8571da177e4SLinus Torvalds kfree(card);
8581da177e4SLinus Torvalds }
8591da177e4SLinus Torvalds }
8601da177e4SLinus Torvalds
get_scq(ns_dev * card,int size,u32 scd)861864a3ff6Schas williams - CONTRACTOR static scq_info *get_scq(ns_dev *card, int size, u32 scd)
8621da177e4SLinus Torvalds {
8631da177e4SLinus Torvalds scq_info *scq;
8641da177e4SLinus Torvalds
8651da177e4SLinus Torvalds if (size != VBR_SCQSIZE && size != CBR_SCQSIZE)
866a2c1aa54SJesper Juhl return NULL;
8671da177e4SLinus Torvalds
86824310fd5SMarkus Elfring scq = kmalloc(sizeof(*scq), GFP_KERNEL);
869864a3ff6Schas williams - CONTRACTOR if (!scq)
870a2c1aa54SJesper Juhl return NULL;
871ede58ef2Schas williams - CONTRACTOR scq->org = dma_alloc_coherent(&card->pcidev->dev,
872ede58ef2Schas williams - CONTRACTOR 2 * size, &scq->dma, GFP_KERNEL);
873864a3ff6Schas williams - CONTRACTOR if (!scq->org) {
8741da177e4SLinus Torvalds kfree(scq);
875a2c1aa54SJesper Juhl return NULL;
8761da177e4SLinus Torvalds }
877*92c54a65SChristophe JAILLET scq->skb = kcalloc(size / NS_SCQE_SIZE, sizeof(*scq->skb),
87878706121SMarkus Elfring GFP_KERNEL);
879864a3ff6Schas williams - CONTRACTOR if (!scq->skb) {
880eab81466SChristophe Jaillet dma_free_coherent(&card->pcidev->dev,
881eab81466SChristophe Jaillet 2 * size, scq->org, scq->dma);
8821da177e4SLinus Torvalds kfree(scq);
883a2c1aa54SJesper Juhl return NULL;
8841da177e4SLinus Torvalds }
8851da177e4SLinus Torvalds scq->num_entries = size / NS_SCQE_SIZE;
886864a3ff6Schas williams - CONTRACTOR scq->base = PTR_ALIGN(scq->org, size);
8871da177e4SLinus Torvalds scq->next = scq->base;
8881da177e4SLinus Torvalds scq->last = scq->base + (scq->num_entries - 1);
8891da177e4SLinus Torvalds scq->tail = scq->last;
8901da177e4SLinus Torvalds scq->scd = scd;
8911da177e4SLinus Torvalds scq->tbd_count = 0;
8921da177e4SLinus Torvalds init_waitqueue_head(&scq->scqfull_waitq);
8931da177e4SLinus Torvalds scq->full = 0;
8941da177e4SLinus Torvalds spin_lock_init(&scq->lock);
8951da177e4SLinus Torvalds
8961da177e4SLinus Torvalds return scq;
8971da177e4SLinus Torvalds }
8981da177e4SLinus Torvalds
8991da177e4SLinus Torvalds /* For variable rate SCQ vcc must be NULL */
free_scq(ns_dev * card,scq_info * scq,struct atm_vcc * vcc)900864a3ff6Schas williams - CONTRACTOR static void free_scq(ns_dev *card, scq_info *scq, struct atm_vcc *vcc)
9011da177e4SLinus Torvalds {
9021da177e4SLinus Torvalds int i;
9031da177e4SLinus Torvalds
9041da177e4SLinus Torvalds if (scq->num_entries == VBR_SCQ_NUM_ENTRIES)
905098fde11Schas williams - CONTRACTOR for (i = 0; i < scq->num_entries; i++) {
906098fde11Schas williams - CONTRACTOR if (scq->skb[i] != NULL) {
9071da177e4SLinus Torvalds vcc = ATM_SKB(scq->skb[i])->vcc;
9081da177e4SLinus Torvalds if (vcc->pop != NULL)
9091da177e4SLinus Torvalds vcc->pop(vcc, scq->skb[i]);
9101da177e4SLinus Torvalds else
9111da177e4SLinus Torvalds dev_kfree_skb_any(scq->skb[i]);
9121da177e4SLinus Torvalds }
913098fde11Schas williams - CONTRACTOR } else { /* vcc must be != NULL */
914098fde11Schas williams - CONTRACTOR
915098fde11Schas williams - CONTRACTOR if (vcc == NULL) {
916098fde11Schas williams - CONTRACTOR printk
917098fde11Schas williams - CONTRACTOR ("nicstar: free_scq() called with vcc == NULL for fixed rate scq.");
9181da177e4SLinus Torvalds for (i = 0; i < scq->num_entries; i++)
9191da177e4SLinus Torvalds dev_kfree_skb_any(scq->skb[i]);
920098fde11Schas williams - CONTRACTOR } else
921098fde11Schas williams - CONTRACTOR for (i = 0; i < scq->num_entries; i++) {
922098fde11Schas williams - CONTRACTOR if (scq->skb[i] != NULL) {
9231da177e4SLinus Torvalds if (vcc->pop != NULL)
9241da177e4SLinus Torvalds vcc->pop(vcc, scq->skb[i]);
9251da177e4SLinus Torvalds else
9261da177e4SLinus Torvalds dev_kfree_skb_any(scq->skb[i]);
9271da177e4SLinus Torvalds }
9281da177e4SLinus Torvalds }
9291da177e4SLinus Torvalds }
9301da177e4SLinus Torvalds kfree(scq->skb);
931ede58ef2Schas williams - CONTRACTOR dma_free_coherent(&card->pcidev->dev,
932864a3ff6Schas williams - CONTRACTOR 2 * (scq->num_entries == VBR_SCQ_NUM_ENTRIES ?
933864a3ff6Schas williams - CONTRACTOR VBR_SCQSIZE : CBR_SCQSIZE),
934864a3ff6Schas williams - CONTRACTOR scq->org, scq->dma);
9351da177e4SLinus Torvalds kfree(scq);
9361da177e4SLinus Torvalds }
9371da177e4SLinus Torvalds
9381da177e4SLinus Torvalds /* The handles passed must be pointers to the sk_buff containing the small
9391da177e4SLinus Torvalds or large buffer(s) cast to u32. */
push_rxbufs(ns_dev * card,struct sk_buff * skb)9408728b834SDavid S. Miller static void push_rxbufs(ns_dev * card, struct sk_buff *skb)
9411da177e4SLinus Torvalds {
942864a3ff6Schas williams - CONTRACTOR struct sk_buff *handle1, *handle2;
943b051f6edSTejun Heo int id1, id2;
944864a3ff6Schas williams - CONTRACTOR u32 addr1, addr2;
9451da177e4SLinus Torvalds u32 stat;
9461da177e4SLinus Torvalds unsigned long flags;
9471da177e4SLinus Torvalds
9488728b834SDavid S. Miller /* *BARF* */
949864a3ff6Schas williams - CONTRACTOR handle2 = NULL;
950864a3ff6Schas williams - CONTRACTOR addr2 = 0;
951864a3ff6Schas williams - CONTRACTOR handle1 = skb;
952ede58ef2Schas williams - CONTRACTOR addr1 = dma_map_single(&card->pcidev->dev,
953864a3ff6Schas williams - CONTRACTOR skb->data,
954864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM
955864a3ff6Schas williams - CONTRACTOR ? NS_SMSKBSIZE : NS_LGSKBSIZE),
956ede58ef2Schas williams - CONTRACTOR DMA_TO_DEVICE);
957864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb) = addr1; /* save so we can unmap later */
9581da177e4SLinus Torvalds
9591da177e4SLinus Torvalds #ifdef GENERAL_DEBUG
9601da177e4SLinus Torvalds if (!addr1)
961098fde11Schas williams - CONTRACTOR printk("nicstar%d: push_rxbufs called with addr1 = 0.\n",
962098fde11Schas williams - CONTRACTOR card->index);
9631da177e4SLinus Torvalds #endif /* GENERAL_DEBUG */
9641da177e4SLinus Torvalds
9651da177e4SLinus Torvalds stat = readl(card->membase + STAT);
9661da177e4SLinus Torvalds card->sbfqc = ns_stat_sfbqc_get(stat);
9671da177e4SLinus Torvalds card->lbfqc = ns_stat_lfbqc_get(stat);
968864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) == BUF_SM) {
969098fde11Schas williams - CONTRACTOR if (!addr2) {
970098fde11Schas williams - CONTRACTOR if (card->sm_addr) {
9711da177e4SLinus Torvalds addr2 = card->sm_addr;
9721da177e4SLinus Torvalds handle2 = card->sm_handle;
9731da177e4SLinus Torvalds card->sm_addr = 0x00000000;
974c664d638SDaeseok Youn card->sm_handle = NULL;
975098fde11Schas williams - CONTRACTOR } else { /* (!sm_addr) */
976098fde11Schas williams - CONTRACTOR
9771da177e4SLinus Torvalds card->sm_addr = addr1;
9781da177e4SLinus Torvalds card->sm_handle = handle1;
9791da177e4SLinus Torvalds }
9801da177e4SLinus Torvalds }
981098fde11Schas williams - CONTRACTOR } else { /* buf_type == BUF_LG */
982098fde11Schas williams - CONTRACTOR
983098fde11Schas williams - CONTRACTOR if (!addr2) {
984098fde11Schas williams - CONTRACTOR if (card->lg_addr) {
9851da177e4SLinus Torvalds addr2 = card->lg_addr;
9861da177e4SLinus Torvalds handle2 = card->lg_handle;
9871da177e4SLinus Torvalds card->lg_addr = 0x00000000;
988c664d638SDaeseok Youn card->lg_handle = NULL;
989098fde11Schas williams - CONTRACTOR } else { /* (!lg_addr) */
990098fde11Schas williams - CONTRACTOR
9911da177e4SLinus Torvalds card->lg_addr = addr1;
9921da177e4SLinus Torvalds card->lg_handle = handle1;
9931da177e4SLinus Torvalds }
9941da177e4SLinus Torvalds }
9951da177e4SLinus Torvalds }
9961da177e4SLinus Torvalds
997098fde11Schas williams - CONTRACTOR if (addr2) {
998864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) == BUF_SM) {
999098fde11Schas williams - CONTRACTOR if (card->sbfqc >= card->sbnr.max) {
1000864a3ff6Schas williams - CONTRACTOR skb_unlink(handle1, &card->sbpool.queue);
1001864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle1);
1002864a3ff6Schas williams - CONTRACTOR skb_unlink(handle2, &card->sbpool.queue);
1003864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle2);
10041da177e4SLinus Torvalds return;
1005098fde11Schas williams - CONTRACTOR } else
10061da177e4SLinus Torvalds card->sbfqc += 2;
1007098fde11Schas williams - CONTRACTOR } else { /* (buf_type == BUF_LG) */
1008098fde11Schas williams - CONTRACTOR
1009098fde11Schas williams - CONTRACTOR if (card->lbfqc >= card->lbnr.max) {
1010864a3ff6Schas williams - CONTRACTOR skb_unlink(handle1, &card->lbpool.queue);
1011864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle1);
1012864a3ff6Schas williams - CONTRACTOR skb_unlink(handle2, &card->lbpool.queue);
1013864a3ff6Schas williams - CONTRACTOR dev_kfree_skb_any(handle2);
10141da177e4SLinus Torvalds return;
1015098fde11Schas williams - CONTRACTOR } else
10161da177e4SLinus Torvalds card->lbfqc += 2;
10171da177e4SLinus Torvalds }
10181da177e4SLinus Torvalds
1019b051f6edSTejun Heo id1 = idr_alloc(&card->idr, handle1, 0, 0, GFP_ATOMIC);
1020b051f6edSTejun Heo if (id1 < 0)
1021864a3ff6Schas williams - CONTRACTOR goto out;
10221da177e4SLinus Torvalds
1023b051f6edSTejun Heo id2 = idr_alloc(&card->idr, handle2, 0, 0, GFP_ATOMIC);
1024b051f6edSTejun Heo if (id2 < 0)
1025864a3ff6Schas williams - CONTRACTOR goto out;
1026864a3ff6Schas williams - CONTRACTOR
1027864a3ff6Schas williams - CONTRACTOR spin_lock_irqsave(&card->res_lock, flags);
10281da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
10291da177e4SLinus Torvalds writel(addr2, card->membase + DR3);
1030864a3ff6Schas williams - CONTRACTOR writel(id2, card->membase + DR2);
10311da177e4SLinus Torvalds writel(addr1, card->membase + DR1);
1032864a3ff6Schas williams - CONTRACTOR writel(id1, card->membase + DR0);
1033864a3ff6Schas williams - CONTRACTOR writel(NS_CMD_WRITE_FREEBUFQ | NS_PRV_BUFTYPE(skb),
1034098fde11Schas williams - CONTRACTOR card->membase + CMD);
10351da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags);
10361da177e4SLinus Torvalds
1037098fde11Schas williams - CONTRACTOR XPRINTK("nicstar%d: Pushing %s buffers at 0x%x and 0x%x.\n",
1038098fde11Schas williams - CONTRACTOR card->index,
1039864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM ? "small" : "large"),
1040864a3ff6Schas williams - CONTRACTOR addr1, addr2);
10411da177e4SLinus Torvalds }
10421da177e4SLinus Torvalds
10431da177e4SLinus Torvalds if (!card->efbie && card->sbfqc >= card->sbnr.min &&
1044098fde11Schas williams - CONTRACTOR card->lbfqc >= card->lbnr.min) {
10451da177e4SLinus Torvalds card->efbie = 1;
1046098fde11Schas williams - CONTRACTOR writel((readl(card->membase + CFG) | NS_CFG_EFBIE),
1047098fde11Schas williams - CONTRACTOR card->membase + CFG);
10481da177e4SLinus Torvalds }
10491da177e4SLinus Torvalds
1050864a3ff6Schas williams - CONTRACTOR out:
10511da177e4SLinus Torvalds return;
10521da177e4SLinus Torvalds }
10531da177e4SLinus Torvalds
ns_irq_handler(int irq,void * dev_id)10547d12e780SDavid Howells static irqreturn_t ns_irq_handler(int irq, void *dev_id)
10551da177e4SLinus Torvalds {
10561da177e4SLinus Torvalds u32 stat_r;
10571da177e4SLinus Torvalds ns_dev *card;
10581da177e4SLinus Torvalds struct atm_dev *dev;
10591da177e4SLinus Torvalds unsigned long flags;
10601da177e4SLinus Torvalds
10611da177e4SLinus Torvalds card = (ns_dev *) dev_id;
10621da177e4SLinus Torvalds dev = card->atmdev;
10631da177e4SLinus Torvalds card->intcnt++;
10641da177e4SLinus Torvalds
10651da177e4SLinus Torvalds PRINTK("nicstar%d: NICStAR generated an interrupt\n", card->index);
10661da177e4SLinus Torvalds
106736ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags);
10681da177e4SLinus Torvalds
10691da177e4SLinus Torvalds stat_r = readl(card->membase + STAT);
10701da177e4SLinus Torvalds
10711da177e4SLinus Torvalds /* Transmit Status Indicator has been written to T. S. Queue */
1072098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TSIF) {
10731da177e4SLinus Torvalds TXPRINTK("nicstar%d: TSI interrupt\n", card->index);
10741da177e4SLinus Torvalds process_tsq(card);
10751da177e4SLinus Torvalds writel(NS_STAT_TSIF, card->membase + STAT);
10761da177e4SLinus Torvalds }
10771da177e4SLinus Torvalds
10781da177e4SLinus Torvalds /* Incomplete CS-PDU has been transmitted */
1079098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TXICP) {
10801da177e4SLinus Torvalds writel(NS_STAT_TXICP, card->membase + STAT);
10811da177e4SLinus Torvalds TXPRINTK("nicstar%d: Incomplete CS-PDU transmitted.\n",
10821da177e4SLinus Torvalds card->index);
10831da177e4SLinus Torvalds }
10841da177e4SLinus Torvalds
10851da177e4SLinus Torvalds /* Transmit Status Queue 7/8 full */
1086098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TSQF) {
10871da177e4SLinus Torvalds writel(NS_STAT_TSQF, card->membase + STAT);
10881da177e4SLinus Torvalds PRINTK("nicstar%d: TSQ full.\n", card->index);
10891da177e4SLinus Torvalds process_tsq(card);
10901da177e4SLinus Torvalds }
10911da177e4SLinus Torvalds
10921da177e4SLinus Torvalds /* Timer overflow */
1093098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_TMROF) {
10941da177e4SLinus Torvalds writel(NS_STAT_TMROF, card->membase + STAT);
10951da177e4SLinus Torvalds PRINTK("nicstar%d: Timer overflow.\n", card->index);
10961da177e4SLinus Torvalds }
10971da177e4SLinus Torvalds
10981da177e4SLinus Torvalds /* PHY device interrupt signal active */
1099098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_PHYI) {
11001da177e4SLinus Torvalds writel(NS_STAT_PHYI, card->membase + STAT);
11011da177e4SLinus Torvalds PRINTK("nicstar%d: PHY interrupt.\n", card->index);
11021da177e4SLinus Torvalds if (dev->phy && dev->phy->interrupt) {
11031da177e4SLinus Torvalds dev->phy->interrupt(dev);
11041da177e4SLinus Torvalds }
11051da177e4SLinus Torvalds }
11061da177e4SLinus Torvalds
11071da177e4SLinus Torvalds /* Small Buffer Queue is full */
1108098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_SFBQF) {
11091da177e4SLinus Torvalds writel(NS_STAT_SFBQF, card->membase + STAT);
1110098fde11Schas williams - CONTRACTOR printk("nicstar%d: Small free buffer queue is full.\n",
1111098fde11Schas williams - CONTRACTOR card->index);
11121da177e4SLinus Torvalds }
11131da177e4SLinus Torvalds
11141da177e4SLinus Torvalds /* Large Buffer Queue is full */
1115098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_LFBQF) {
11161da177e4SLinus Torvalds writel(NS_STAT_LFBQF, card->membase + STAT);
1117098fde11Schas williams - CONTRACTOR printk("nicstar%d: Large free buffer queue is full.\n",
1118098fde11Schas williams - CONTRACTOR card->index);
11191da177e4SLinus Torvalds }
11201da177e4SLinus Torvalds
11211da177e4SLinus Torvalds /* Receive Status Queue is full */
1122098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_RSQF) {
11231da177e4SLinus Torvalds writel(NS_STAT_RSQF, card->membase + STAT);
11241da177e4SLinus Torvalds printk("nicstar%d: RSQ full.\n", card->index);
11251da177e4SLinus Torvalds process_rsq(card);
11261da177e4SLinus Torvalds }
11271da177e4SLinus Torvalds
11281da177e4SLinus Torvalds /* Complete CS-PDU received */
1129098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_EOPDU) {
11301da177e4SLinus Torvalds RXPRINTK("nicstar%d: End of CS-PDU received.\n", card->index);
11311da177e4SLinus Torvalds process_rsq(card);
11321da177e4SLinus Torvalds writel(NS_STAT_EOPDU, card->membase + STAT);
11331da177e4SLinus Torvalds }
11341da177e4SLinus Torvalds
11351da177e4SLinus Torvalds /* Raw cell received */
1136098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_RAWCF) {
11371da177e4SLinus Torvalds writel(NS_STAT_RAWCF, card->membase + STAT);
11381da177e4SLinus Torvalds #ifndef RCQ_SUPPORT
11391da177e4SLinus Torvalds printk("nicstar%d: Raw cell received and no support yet...\n",
11401da177e4SLinus Torvalds card->index);
11411da177e4SLinus Torvalds #endif /* RCQ_SUPPORT */
11421da177e4SLinus Torvalds /* NOTE: the following procedure may keep a raw cell pending until the
11431da177e4SLinus Torvalds next interrupt. As this preliminary support is only meant to
11441da177e4SLinus Torvalds avoid buffer leakage, this is not an issue. */
1145098fde11Schas williams - CONTRACTOR while (readl(card->membase + RAWCT) != card->rawch) {
11461da177e4SLinus Torvalds
1147864a3ff6Schas williams - CONTRACTOR if (ns_rcqe_islast(card->rawcell)) {
11481da177e4SLinus Torvalds struct sk_buff *oldbuf;
11491da177e4SLinus Torvalds
11501da177e4SLinus Torvalds oldbuf = card->rcbuf;
1151864a3ff6Schas williams - CONTRACTOR card->rcbuf = idr_find(&card->idr,
1152864a3ff6Schas williams - CONTRACTOR ns_rcqe_nextbufhandle(card->rawcell));
1153864a3ff6Schas williams - CONTRACTOR card->rawch = NS_PRV_DMA(card->rcbuf);
1154864a3ff6Schas williams - CONTRACTOR card->rawcell = (struct ns_rcqe *)
1155864a3ff6Schas williams - CONTRACTOR card->rcbuf->data;
11561da177e4SLinus Torvalds recycle_rx_buf(card, oldbuf);
1157864a3ff6Schas williams - CONTRACTOR } else {
11581da177e4SLinus Torvalds card->rawch += NS_RCQE_SIZE;
1159864a3ff6Schas williams - CONTRACTOR card->rawcell++;
1160864a3ff6Schas williams - CONTRACTOR }
11611da177e4SLinus Torvalds }
11621da177e4SLinus Torvalds }
11631da177e4SLinus Torvalds
11641da177e4SLinus Torvalds /* Small buffer queue is empty */
1165098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_SFBQE) {
11661da177e4SLinus Torvalds int i;
11671da177e4SLinus Torvalds struct sk_buff *sb;
11681da177e4SLinus Torvalds
11691da177e4SLinus Torvalds writel(NS_STAT_SFBQE, card->membase + STAT);
11701da177e4SLinus Torvalds printk("nicstar%d: Small free buffer queue empty.\n",
11711da177e4SLinus Torvalds card->index);
1172098fde11Schas williams - CONTRACTOR for (i = 0; i < card->sbnr.min; i++) {
11731da177e4SLinus Torvalds sb = dev_alloc_skb(NS_SMSKBSIZE);
1174098fde11Schas williams - CONTRACTOR if (sb == NULL) {
1175098fde11Schas williams - CONTRACTOR writel(readl(card->membase + CFG) &
1176098fde11Schas williams - CONTRACTOR ~NS_CFG_EFBIE, card->membase + CFG);
11771da177e4SLinus Torvalds card->efbie = 0;
11781da177e4SLinus Torvalds break;
11791da177e4SLinus Torvalds }
1180864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(sb) = BUF_SM;
11811da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, sb);
11821da177e4SLinus Torvalds skb_reserve(sb, NS_AAL0_HEADER);
11838728b834SDavid S. Miller push_rxbufs(card, sb);
11841da177e4SLinus Torvalds }
11851da177e4SLinus Torvalds card->sbfqc = i;
11861da177e4SLinus Torvalds process_rsq(card);
11871da177e4SLinus Torvalds }
11881da177e4SLinus Torvalds
11891da177e4SLinus Torvalds /* Large buffer queue empty */
1190098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_LFBQE) {
11911da177e4SLinus Torvalds int i;
11921da177e4SLinus Torvalds struct sk_buff *lb;
11931da177e4SLinus Torvalds
11941da177e4SLinus Torvalds writel(NS_STAT_LFBQE, card->membase + STAT);
11951da177e4SLinus Torvalds printk("nicstar%d: Large free buffer queue empty.\n",
11961da177e4SLinus Torvalds card->index);
1197098fde11Schas williams - CONTRACTOR for (i = 0; i < card->lbnr.min; i++) {
11981da177e4SLinus Torvalds lb = dev_alloc_skb(NS_LGSKBSIZE);
1199098fde11Schas williams - CONTRACTOR if (lb == NULL) {
1200098fde11Schas williams - CONTRACTOR writel(readl(card->membase + CFG) &
1201098fde11Schas williams - CONTRACTOR ~NS_CFG_EFBIE, card->membase + CFG);
12021da177e4SLinus Torvalds card->efbie = 0;
12031da177e4SLinus Torvalds break;
12041da177e4SLinus Torvalds }
1205864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(lb) = BUF_LG;
12061da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, lb);
12071da177e4SLinus Torvalds skb_reserve(lb, NS_SMBUFSIZE);
12088728b834SDavid S. Miller push_rxbufs(card, lb);
12091da177e4SLinus Torvalds }
12101da177e4SLinus Torvalds card->lbfqc = i;
12111da177e4SLinus Torvalds process_rsq(card);
12121da177e4SLinus Torvalds }
12131da177e4SLinus Torvalds
12141da177e4SLinus Torvalds /* Receive Status Queue is 7/8 full */
1215098fde11Schas williams - CONTRACTOR if (stat_r & NS_STAT_RSQAF) {
12161da177e4SLinus Torvalds writel(NS_STAT_RSQAF, card->membase + STAT);
12171da177e4SLinus Torvalds RXPRINTK("nicstar%d: RSQ almost full.\n", card->index);
12181da177e4SLinus Torvalds process_rsq(card);
12191da177e4SLinus Torvalds }
12201da177e4SLinus Torvalds
12211da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags);
12221da177e4SLinus Torvalds PRINTK("nicstar%d: end of interrupt service\n", card->index);
12231da177e4SLinus Torvalds return IRQ_HANDLED;
12241da177e4SLinus Torvalds }
12251da177e4SLinus Torvalds
ns_open(struct atm_vcc * vcc)12261da177e4SLinus Torvalds static int ns_open(struct atm_vcc *vcc)
12271da177e4SLinus Torvalds {
12281da177e4SLinus Torvalds ns_dev *card;
12291da177e4SLinus Torvalds vc_map *vc;
12301da177e4SLinus Torvalds unsigned long tmpl, modl;
12311da177e4SLinus Torvalds int tcr, tcra; /* target cell rate, and absolute value */
12321da177e4SLinus Torvalds int n = 0; /* Number of entries in the TST. Initialized to remove
12331da177e4SLinus Torvalds the compiler warning. */
12341da177e4SLinus Torvalds u32 u32d[4];
12351da177e4SLinus Torvalds int frscdi = 0; /* Index of the SCD. Initialized to remove the compiler
12361da177e4SLinus Torvalds warning. How I wish compilers were clever enough to
12371da177e4SLinus Torvalds tell which variables can truly be used
12381da177e4SLinus Torvalds uninitialized... */
12391da177e4SLinus Torvalds int inuse; /* tx or rx vc already in use by another vcc */
12401da177e4SLinus Torvalds short vpi = vcc->vpi;
12411da177e4SLinus Torvalds int vci = vcc->vci;
12421da177e4SLinus Torvalds
12431da177e4SLinus Torvalds card = (ns_dev *) vcc->dev->dev_data;
1244098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: opening vpi.vci %d.%d \n", card->index, (int)vpi,
1245098fde11Schas williams - CONTRACTOR vci);
1246098fde11Schas williams - CONTRACTOR if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) {
12471da177e4SLinus Torvalds PRINTK("nicstar%d: unsupported AAL.\n", card->index);
12481da177e4SLinus Torvalds return -EINVAL;
12491da177e4SLinus Torvalds }
12501da177e4SLinus Torvalds
12511da177e4SLinus Torvalds vc = &(card->vcmap[vpi << card->vcibits | vci]);
12521da177e4SLinus Torvalds vcc->dev_data = vc;
12531da177e4SLinus Torvalds
12541da177e4SLinus Torvalds inuse = 0;
12551da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE && vc->tx)
12561da177e4SLinus Torvalds inuse = 1;
12571da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE && vc->rx)
12581da177e4SLinus Torvalds inuse += 2;
1259098fde11Schas williams - CONTRACTOR if (inuse) {
12601da177e4SLinus Torvalds printk("nicstar%d: %s vci already in use.\n", card->index,
12611da177e4SLinus Torvalds inuse == 1 ? "tx" : inuse == 2 ? "rx" : "tx and rx");
12621da177e4SLinus Torvalds return -EINVAL;
12631da177e4SLinus Torvalds }
12641da177e4SLinus Torvalds
12651da177e4SLinus Torvalds set_bit(ATM_VF_ADDR, &vcc->flags);
12661da177e4SLinus Torvalds
12671da177e4SLinus Torvalds /* NOTE: You are not allowed to modify an open connection's QOS. To change
12681da177e4SLinus Torvalds that, remove the ATM_VF_PARTIAL flag checking. There may be other changes
12691da177e4SLinus Torvalds needed to do that. */
1270098fde11Schas williams - CONTRACTOR if (!test_bit(ATM_VF_PARTIAL, &vcc->flags)) {
12711da177e4SLinus Torvalds scq_info *scq;
12721da177e4SLinus Torvalds
12731da177e4SLinus Torvalds set_bit(ATM_VF_PARTIAL, &vcc->flags);
1274098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class == ATM_CBR) {
12751da177e4SLinus Torvalds /* Check requested cell rate and availability of SCD */
1276098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.max_pcr == 0 && vcc->qos.txtp.pcr == 0
1277098fde11Schas williams - CONTRACTOR && vcc->qos.txtp.min_pcr == 0) {
1278098fde11Schas williams - CONTRACTOR PRINTK
1279098fde11Schas williams - CONTRACTOR ("nicstar%d: trying to open a CBR vc with cell rate = 0 \n",
12801da177e4SLinus Torvalds card->index);
12811da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags);
12821da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags);
12831da177e4SLinus Torvalds return -EINVAL;
12841da177e4SLinus Torvalds }
12851da177e4SLinus Torvalds
12861da177e4SLinus Torvalds tcr = atm_pcr_goal(&(vcc->qos.txtp));
12871da177e4SLinus Torvalds tcra = tcr >= 0 ? tcr : -tcr;
12881da177e4SLinus Torvalds
1289098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: target cell rate = %d.\n",
1290098fde11Schas williams - CONTRACTOR card->index, vcc->qos.txtp.max_pcr);
12911da177e4SLinus Torvalds
1292098fde11Schas williams - CONTRACTOR tmpl =
1293098fde11Schas williams - CONTRACTOR (unsigned long)tcra *(unsigned long)
1294098fde11Schas williams - CONTRACTOR NS_TST_NUM_ENTRIES;
12951da177e4SLinus Torvalds modl = tmpl % card->max_pcr;
12961da177e4SLinus Torvalds
12971da177e4SLinus Torvalds n = (int)(tmpl / card->max_pcr);
1298098fde11Schas williams - CONTRACTOR if (tcr > 0) {
1299098fde11Schas williams - CONTRACTOR if (modl > 0)
1300098fde11Schas williams - CONTRACTOR n++;
1301098fde11Schas williams - CONTRACTOR } else if (tcr == 0) {
1302098fde11Schas williams - CONTRACTOR if ((n =
1303098fde11Schas williams - CONTRACTOR (card->tst_free_entries -
1304098fde11Schas williams - CONTRACTOR NS_TST_RESERVED)) <= 0) {
1305098fde11Schas williams - CONTRACTOR PRINTK
1306098fde11Schas williams - CONTRACTOR ("nicstar%d: no CBR bandwidth free.\n",
1307098fde11Schas williams - CONTRACTOR card->index);
13081da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags);
13091da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags);
13101da177e4SLinus Torvalds return -EINVAL;
13111da177e4SLinus Torvalds }
13121da177e4SLinus Torvalds }
13131da177e4SLinus Torvalds
1314098fde11Schas williams - CONTRACTOR if (n == 0) {
1315098fde11Schas williams - CONTRACTOR printk
1316098fde11Schas williams - CONTRACTOR ("nicstar%d: selected bandwidth < granularity.\n",
1317098fde11Schas williams - CONTRACTOR card->index);
13181da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags);
13191da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags);
13201da177e4SLinus Torvalds return -EINVAL;
13211da177e4SLinus Torvalds }
13221da177e4SLinus Torvalds
1323098fde11Schas williams - CONTRACTOR if (n > (card->tst_free_entries - NS_TST_RESERVED)) {
1324098fde11Schas williams - CONTRACTOR PRINTK
1325098fde11Schas williams - CONTRACTOR ("nicstar%d: not enough free CBR bandwidth.\n",
1326098fde11Schas williams - CONTRACTOR card->index);
13271da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags);
13281da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags);
13291da177e4SLinus Torvalds return -EINVAL;
1330098fde11Schas williams - CONTRACTOR } else
13311da177e4SLinus Torvalds card->tst_free_entries -= n;
13321da177e4SLinus Torvalds
1333098fde11Schas williams - CONTRACTOR XPRINTK("nicstar%d: writing %d tst entries.\n",
1334098fde11Schas williams - CONTRACTOR card->index, n);
1335098fde11Schas williams - CONTRACTOR for (frscdi = 0; frscdi < NS_FRSCD_NUM; frscdi++) {
1336098fde11Schas williams - CONTRACTOR if (card->scd2vc[frscdi] == NULL) {
13371da177e4SLinus Torvalds card->scd2vc[frscdi] = vc;
13381da177e4SLinus Torvalds break;
13391da177e4SLinus Torvalds }
13401da177e4SLinus Torvalds }
1341098fde11Schas williams - CONTRACTOR if (frscdi == NS_FRSCD_NUM) {
1342098fde11Schas williams - CONTRACTOR PRINTK
1343098fde11Schas williams - CONTRACTOR ("nicstar%d: no SCD available for CBR channel.\n",
1344098fde11Schas williams - CONTRACTOR card->index);
13451da177e4SLinus Torvalds card->tst_free_entries += n;
13461da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags);
13471da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags);
13481da177e4SLinus Torvalds return -EBUSY;
13491da177e4SLinus Torvalds }
13501da177e4SLinus Torvalds
13511da177e4SLinus Torvalds vc->cbr_scd = NS_FRSCD + frscdi * NS_FRSCD_SIZE;
13521da177e4SLinus Torvalds
1353864a3ff6Schas williams - CONTRACTOR scq = get_scq(card, CBR_SCQSIZE, vc->cbr_scd);
1354098fde11Schas williams - CONTRACTOR if (scq == NULL) {
1355098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: can't get fixed rate SCQ.\n",
1356098fde11Schas williams - CONTRACTOR card->index);
13571da177e4SLinus Torvalds card->scd2vc[frscdi] = NULL;
13581da177e4SLinus Torvalds card->tst_free_entries += n;
13591da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags);
13601da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags);
13611da177e4SLinus Torvalds return -ENOMEM;
13621da177e4SLinus Torvalds }
13631da177e4SLinus Torvalds vc->scq = scq;
1364864a3ff6Schas williams - CONTRACTOR u32d[0] = scq_virt_to_bus(scq, scq->base);
13651da177e4SLinus Torvalds u32d[1] = (u32) 0x00000000;
13661da177e4SLinus Torvalds u32d[2] = (u32) 0xffffffff;
13671da177e4SLinus Torvalds u32d[3] = (u32) 0x00000000;
13681da177e4SLinus Torvalds ns_write_sram(card, vc->cbr_scd, u32d, 4);
13691da177e4SLinus Torvalds
13701da177e4SLinus Torvalds fill_tst(card, n, vc);
1371098fde11Schas williams - CONTRACTOR } else if (vcc->qos.txtp.traffic_class == ATM_UBR) {
13721da177e4SLinus Torvalds vc->cbr_scd = 0x00000000;
13731da177e4SLinus Torvalds vc->scq = card->scq0;
13741da177e4SLinus Torvalds }
13751da177e4SLinus Torvalds
1376098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class != ATM_NONE) {
13771da177e4SLinus Torvalds vc->tx = 1;
13781da177e4SLinus Torvalds vc->tx_vcc = vcc;
13791da177e4SLinus Torvalds vc->tbd_count = 0;
13801da177e4SLinus Torvalds }
1381098fde11Schas williams - CONTRACTOR if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
13821da177e4SLinus Torvalds u32 status;
13831da177e4SLinus Torvalds
13841da177e4SLinus Torvalds vc->rx = 1;
13851da177e4SLinus Torvalds vc->rx_vcc = vcc;
13861da177e4SLinus Torvalds vc->rx_iov = NULL;
13871da177e4SLinus Torvalds
13881da177e4SLinus Torvalds /* Open the connection in hardware */
13891da177e4SLinus Torvalds if (vcc->qos.aal == ATM_AAL5)
13901da177e4SLinus Torvalds status = NS_RCTE_AAL5 | NS_RCTE_CONNECTOPEN;
13911da177e4SLinus Torvalds else /* vcc->qos.aal == ATM_AAL0 */
13921da177e4SLinus Torvalds status = NS_RCTE_AAL0 | NS_RCTE_CONNECTOPEN;
13931da177e4SLinus Torvalds #ifdef RCQ_SUPPORT
13941da177e4SLinus Torvalds status |= NS_RCTE_RAWCELLINTEN;
13951da177e4SLinus Torvalds #endif /* RCQ_SUPPORT */
1396098fde11Schas williams - CONTRACTOR ns_write_sram(card,
1397098fde11Schas williams - CONTRACTOR NS_RCT +
1398098fde11Schas williams - CONTRACTOR (vpi << card->vcibits | vci) *
13991da177e4SLinus Torvalds NS_RCT_ENTRY_SIZE, &status, 1);
14001da177e4SLinus Torvalds }
14011da177e4SLinus Torvalds
14021da177e4SLinus Torvalds }
14031da177e4SLinus Torvalds
14041da177e4SLinus Torvalds set_bit(ATM_VF_READY, &vcc->flags);
14051da177e4SLinus Torvalds return 0;
14061da177e4SLinus Torvalds }
14071da177e4SLinus Torvalds
ns_close(struct atm_vcc * vcc)14081da177e4SLinus Torvalds static void ns_close(struct atm_vcc *vcc)
14091da177e4SLinus Torvalds {
14101da177e4SLinus Torvalds vc_map *vc;
14111da177e4SLinus Torvalds ns_dev *card;
14121da177e4SLinus Torvalds u32 data;
14131da177e4SLinus Torvalds int i;
14141da177e4SLinus Torvalds
14151da177e4SLinus Torvalds vc = vcc->dev_data;
14161da177e4SLinus Torvalds card = vcc->dev->dev_data;
14171da177e4SLinus Torvalds PRINTK("nicstar%d: closing vpi.vci %d.%d \n", card->index,
14181da177e4SLinus Torvalds (int)vcc->vpi, vcc->vci);
14191da177e4SLinus Torvalds
14201da177e4SLinus Torvalds clear_bit(ATM_VF_READY, &vcc->flags);
14211da177e4SLinus Torvalds
1422098fde11Schas williams - CONTRACTOR if (vcc->qos.rxtp.traffic_class != ATM_NONE) {
14231da177e4SLinus Torvalds u32 addr;
14241da177e4SLinus Torvalds unsigned long flags;
14251da177e4SLinus Torvalds
1426098fde11Schas williams - CONTRACTOR addr =
1427098fde11Schas williams - CONTRACTOR NS_RCT +
1428098fde11Schas williams - CONTRACTOR (vcc->vpi << card->vcibits | vcc->vci) * NS_RCT_ENTRY_SIZE;
142936ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags);
14301da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
1431098fde11Schas williams - CONTRACTOR writel(NS_CMD_CLOSE_CONNECTION | addr << 2,
1432098fde11Schas williams - CONTRACTOR card->membase + CMD);
14331da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags);
14341da177e4SLinus Torvalds
14351da177e4SLinus Torvalds vc->rx = 0;
1436098fde11Schas williams - CONTRACTOR if (vc->rx_iov != NULL) {
14371da177e4SLinus Torvalds struct sk_buff *iovb;
14381da177e4SLinus Torvalds u32 stat;
14391da177e4SLinus Torvalds
14401da177e4SLinus Torvalds stat = readl(card->membase + STAT);
14411da177e4SLinus Torvalds card->sbfqc = ns_stat_sfbqc_get(stat);
14421da177e4SLinus Torvalds card->lbfqc = ns_stat_lfbqc_get(stat);
14431da177e4SLinus Torvalds
1444098fde11Schas williams - CONTRACTOR PRINTK
1445098fde11Schas williams - CONTRACTOR ("nicstar%d: closing a VC with pending rx buffers.\n",
14461da177e4SLinus Torvalds card->index);
14471da177e4SLinus Torvalds iovb = vc->rx_iov;
14481da177e4SLinus Torvalds recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
1449864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb));
1450864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb) = 0;
145136ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags);
14521da177e4SLinus Torvalds recycle_iov_buf(card, iovb);
14531da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags);
14541da177e4SLinus Torvalds vc->rx_iov = NULL;
14551da177e4SLinus Torvalds }
14561da177e4SLinus Torvalds }
14571da177e4SLinus Torvalds
1458098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class != ATM_NONE) {
14591da177e4SLinus Torvalds vc->tx = 0;
14601da177e4SLinus Torvalds }
14611da177e4SLinus Torvalds
1462098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class == ATM_CBR) {
14631da177e4SLinus Torvalds unsigned long flags;
14641da177e4SLinus Torvalds ns_scqe *scqep;
14651da177e4SLinus Torvalds scq_info *scq;
14661da177e4SLinus Torvalds
14671da177e4SLinus Torvalds scq = vc->scq;
14681da177e4SLinus Torvalds
1469098fde11Schas williams - CONTRACTOR for (;;) {
147036ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags);
14711da177e4SLinus Torvalds scqep = scq->next;
14721da177e4SLinus Torvalds if (scqep == scq->base)
14731da177e4SLinus Torvalds scqep = scq->last;
14741da177e4SLinus Torvalds else
14751da177e4SLinus Torvalds scqep--;
1476098fde11Schas williams - CONTRACTOR if (scqep == scq->tail) {
14771da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags);
14781da177e4SLinus Torvalds break;
14791da177e4SLinus Torvalds }
14801da177e4SLinus Torvalds /* If the last entry is not a TSR, place one in the SCQ in order to
14811da177e4SLinus Torvalds be able to completely drain it and then close. */
1482098fde11Schas williams - CONTRACTOR if (!ns_scqe_is_tsr(scqep) && scq->tail != scq->next) {
14831da177e4SLinus Torvalds ns_scqe tsr;
14841da177e4SLinus Torvalds u32 scdi, scqi;
14851da177e4SLinus Torvalds u32 data;
14861da177e4SLinus Torvalds int index;
14871da177e4SLinus Torvalds
14881da177e4SLinus Torvalds tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE);
14891da177e4SLinus Torvalds scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE;
14901da177e4SLinus Torvalds scqi = scq->next - scq->base;
14911da177e4SLinus Torvalds tsr.word_2 = ns_tsr_mkword_2(scdi, scqi);
14921da177e4SLinus Torvalds tsr.word_3 = 0x00000000;
14931da177e4SLinus Torvalds tsr.word_4 = 0x00000000;
14941da177e4SLinus Torvalds *scq->next = tsr;
14951da177e4SLinus Torvalds index = (int)scqi;
14961da177e4SLinus Torvalds scq->skb[index] = NULL;
14971da177e4SLinus Torvalds if (scq->next == scq->last)
14981da177e4SLinus Torvalds scq->next = scq->base;
14991da177e4SLinus Torvalds else
15001da177e4SLinus Torvalds scq->next++;
1501864a3ff6Schas williams - CONTRACTOR data = scq_virt_to_bus(scq, scq->next);
15021da177e4SLinus Torvalds ns_write_sram(card, scq->scd, &data, 1);
15031da177e4SLinus Torvalds }
15041da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags);
15051da177e4SLinus Torvalds schedule();
15061da177e4SLinus Torvalds }
15071da177e4SLinus Torvalds
15081da177e4SLinus Torvalds /* Free all TST entries */
15091da177e4SLinus Torvalds data = NS_TST_OPCODE_VARIABLE;
1510098fde11Schas williams - CONTRACTOR for (i = 0; i < NS_TST_NUM_ENTRIES; i++) {
1511098fde11Schas williams - CONTRACTOR if (card->tste2vc[i] == vc) {
1512098fde11Schas williams - CONTRACTOR ns_write_sram(card, card->tst_addr + i, &data,
1513098fde11Schas williams - CONTRACTOR 1);
15141da177e4SLinus Torvalds card->tste2vc[i] = NULL;
15151da177e4SLinus Torvalds card->tst_free_entries++;
15161da177e4SLinus Torvalds }
15171da177e4SLinus Torvalds }
15181da177e4SLinus Torvalds
15191da177e4SLinus Torvalds card->scd2vc[(vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE] = NULL;
1520864a3ff6Schas williams - CONTRACTOR free_scq(card, vc->scq, vcc);
15211da177e4SLinus Torvalds }
15221da177e4SLinus Torvalds
15231da177e4SLinus Torvalds /* remove all references to vcc before deleting it */
1524098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class != ATM_NONE) {
15251da177e4SLinus Torvalds unsigned long flags;
15261da177e4SLinus Torvalds scq_info *scq = card->scq0;
15271da177e4SLinus Torvalds
152836ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags);
15291da177e4SLinus Torvalds
15301da177e4SLinus Torvalds for (i = 0; i < scq->num_entries; i++) {
15311da177e4SLinus Torvalds if (scq->skb[i] && ATM_SKB(scq->skb[i])->vcc == vcc) {
15321da177e4SLinus Torvalds ATM_SKB(scq->skb[i])->vcc = NULL;
15331da177e4SLinus Torvalds atm_return(vcc, scq->skb[i]->truesize);
1534098fde11Schas williams - CONTRACTOR PRINTK
1535098fde11Schas williams - CONTRACTOR ("nicstar: deleted pending vcc mapping\n");
15361da177e4SLinus Torvalds }
15371da177e4SLinus Torvalds }
15381da177e4SLinus Torvalds
15391da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags);
15401da177e4SLinus Torvalds }
15411da177e4SLinus Torvalds
15421da177e4SLinus Torvalds vcc->dev_data = NULL;
15431da177e4SLinus Torvalds clear_bit(ATM_VF_PARTIAL, &vcc->flags);
15441da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags);
15451da177e4SLinus Torvalds
15461da177e4SLinus Torvalds #ifdef RX_DEBUG
15471da177e4SLinus Torvalds {
15481da177e4SLinus Torvalds u32 stat, cfg;
15491da177e4SLinus Torvalds stat = readl(card->membase + STAT);
15501da177e4SLinus Torvalds cfg = readl(card->membase + CFG);
15511da177e4SLinus Torvalds printk("STAT = 0x%08X CFG = 0x%08X \n", stat, cfg);
1552098fde11Schas williams - CONTRACTOR printk
1553864a3ff6Schas williams - CONTRACTOR ("TSQ: base = 0x%p next = 0x%p last = 0x%p TSQT = 0x%08X \n",
1554864a3ff6Schas williams - CONTRACTOR card->tsq.base, card->tsq.next,
1555864a3ff6Schas williams - CONTRACTOR card->tsq.last, readl(card->membase + TSQT));
1556098fde11Schas williams - CONTRACTOR printk
1557864a3ff6Schas williams - CONTRACTOR ("RSQ: base = 0x%p next = 0x%p last = 0x%p RSQT = 0x%08X \n",
1558864a3ff6Schas williams - CONTRACTOR card->rsq.base, card->rsq.next,
1559864a3ff6Schas williams - CONTRACTOR card->rsq.last, readl(card->membase + RSQT));
15601da177e4SLinus Torvalds printk("Empty free buffer queue interrupt %s \n",
15611da177e4SLinus Torvalds card->efbie ? "enabled" : "disabled");
15621da177e4SLinus Torvalds printk("SBCNT = %d count = %d LBCNT = %d count = %d \n",
15631da177e4SLinus Torvalds ns_stat_sfbqc_get(stat), card->sbpool.count,
15641da177e4SLinus Torvalds ns_stat_lfbqc_get(stat), card->lbpool.count);
15651da177e4SLinus Torvalds printk("hbpool.count = %d iovpool.count = %d \n",
15661da177e4SLinus Torvalds card->hbpool.count, card->iovpool.count);
15671da177e4SLinus Torvalds }
15681da177e4SLinus Torvalds #endif /* RX_DEBUG */
15691da177e4SLinus Torvalds }
15701da177e4SLinus Torvalds
fill_tst(ns_dev * card,int n,vc_map * vc)15711da177e4SLinus Torvalds static void fill_tst(ns_dev * card, int n, vc_map * vc)
15721da177e4SLinus Torvalds {
15731da177e4SLinus Torvalds u32 new_tst;
15741da177e4SLinus Torvalds unsigned long cl;
15751da177e4SLinus Torvalds int e, r;
15761da177e4SLinus Torvalds u32 data;
15771da177e4SLinus Torvalds
15781da177e4SLinus Torvalds /* It would be very complicated to keep the two TSTs synchronized while
15791da177e4SLinus Torvalds assuring that writes are only made to the inactive TST. So, for now I
15801da177e4SLinus Torvalds will use only one TST. If problems occur, I will change this again */
15811da177e4SLinus Torvalds
15821da177e4SLinus Torvalds new_tst = card->tst_addr;
15831da177e4SLinus Torvalds
15841da177e4SLinus Torvalds /* Fill procedure */
15851da177e4SLinus Torvalds
1586098fde11Schas williams - CONTRACTOR for (e = 0; e < NS_TST_NUM_ENTRIES; e++) {
15871da177e4SLinus Torvalds if (card->tste2vc[e] == NULL)
15881da177e4SLinus Torvalds break;
15891da177e4SLinus Torvalds }
15901da177e4SLinus Torvalds if (e == NS_TST_NUM_ENTRIES) {
15911da177e4SLinus Torvalds printk("nicstar%d: No free TST entries found. \n", card->index);
15921da177e4SLinus Torvalds return;
15931da177e4SLinus Torvalds }
15941da177e4SLinus Torvalds
15951da177e4SLinus Torvalds r = n;
15961da177e4SLinus Torvalds cl = NS_TST_NUM_ENTRIES;
15971da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_FIXED, vc->cbr_scd);
15981da177e4SLinus Torvalds
1599098fde11Schas williams - CONTRACTOR while (r > 0) {
1600098fde11Schas williams - CONTRACTOR if (cl >= NS_TST_NUM_ENTRIES && card->tste2vc[e] == NULL) {
16011da177e4SLinus Torvalds card->tste2vc[e] = vc;
16021da177e4SLinus Torvalds ns_write_sram(card, new_tst + e, &data, 1);
16031da177e4SLinus Torvalds cl -= NS_TST_NUM_ENTRIES;
16041da177e4SLinus Torvalds r--;
16051da177e4SLinus Torvalds }
16061da177e4SLinus Torvalds
16071da177e4SLinus Torvalds if (++e == NS_TST_NUM_ENTRIES) {
16081da177e4SLinus Torvalds e = 0;
16091da177e4SLinus Torvalds }
16101da177e4SLinus Torvalds cl += n;
16111da177e4SLinus Torvalds }
16121da177e4SLinus Torvalds
16131da177e4SLinus Torvalds /* End of fill procedure */
16141da177e4SLinus Torvalds
16151da177e4SLinus Torvalds data = ns_tste_make(NS_TST_OPCODE_END, new_tst);
16161da177e4SLinus Torvalds ns_write_sram(card, new_tst + NS_TST_NUM_ENTRIES, &data, 1);
16171da177e4SLinus Torvalds ns_write_sram(card, card->tst_addr + NS_TST_NUM_ENTRIES, &data, 1);
16181da177e4SLinus Torvalds card->tst_addr = new_tst;
16191da177e4SLinus Torvalds }
16201da177e4SLinus Torvalds
_ns_send(struct atm_vcc * vcc,struct sk_buff * skb,bool may_sleep)1621f2bcc2faSSebastian Andrzej Siewior static int _ns_send(struct atm_vcc *vcc, struct sk_buff *skb, bool may_sleep)
16221da177e4SLinus Torvalds {
16231da177e4SLinus Torvalds ns_dev *card;
16241da177e4SLinus Torvalds vc_map *vc;
16251da177e4SLinus Torvalds scq_info *scq;
16261da177e4SLinus Torvalds unsigned long buflen;
16271da177e4SLinus Torvalds ns_scqe scqe;
16281da177e4SLinus Torvalds u32 flags; /* TBD flags, not CPU flags */
16291da177e4SLinus Torvalds
16301da177e4SLinus Torvalds card = vcc->dev->dev_data;
16311da177e4SLinus Torvalds TXPRINTK("nicstar%d: ns_send() called.\n", card->index);
1632098fde11Schas williams - CONTRACTOR if ((vc = (vc_map *) vcc->dev_data) == NULL) {
1633098fde11Schas williams - CONTRACTOR printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n",
1634098fde11Schas williams - CONTRACTOR card->index);
16351da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err);
16361da177e4SLinus Torvalds dev_kfree_skb_any(skb);
16371da177e4SLinus Torvalds return -EINVAL;
16381da177e4SLinus Torvalds }
16391da177e4SLinus Torvalds
1640098fde11Schas williams - CONTRACTOR if (!vc->tx) {
1641098fde11Schas williams - CONTRACTOR printk("nicstar%d: Trying to transmit on a non-tx VC.\n",
1642098fde11Schas williams - CONTRACTOR card->index);
16431da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err);
16441da177e4SLinus Torvalds dev_kfree_skb_any(skb);
16451da177e4SLinus Torvalds return -EINVAL;
16461da177e4SLinus Torvalds }
16471da177e4SLinus Torvalds
1648098fde11Schas williams - CONTRACTOR if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) {
1649098fde11Schas williams - CONTRACTOR printk("nicstar%d: Only AAL0 and AAL5 are supported.\n",
1650098fde11Schas williams - CONTRACTOR card->index);
16511da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err);
16521da177e4SLinus Torvalds dev_kfree_skb_any(skb);
16531da177e4SLinus Torvalds return -EINVAL;
16541da177e4SLinus Torvalds }
16551da177e4SLinus Torvalds
1656098fde11Schas williams - CONTRACTOR if (skb_shinfo(skb)->nr_frags != 0) {
16571da177e4SLinus Torvalds printk("nicstar%d: No scatter-gather yet.\n", card->index);
16581da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err);
16591da177e4SLinus Torvalds dev_kfree_skb_any(skb);
16601da177e4SLinus Torvalds return -EINVAL;
16611da177e4SLinus Torvalds }
16621da177e4SLinus Torvalds
16631da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc;
16641da177e4SLinus Torvalds
1665ede58ef2Schas williams - CONTRACTOR NS_PRV_DMA(skb) = dma_map_single(&card->pcidev->dev, skb->data,
1666ede58ef2Schas williams - CONTRACTOR skb->len, DMA_TO_DEVICE);
1667864a3ff6Schas williams - CONTRACTOR
1668098fde11Schas williams - CONTRACTOR if (vcc->qos.aal == ATM_AAL5) {
16691da177e4SLinus Torvalds buflen = (skb->len + 47 + 8) / 48 * 48; /* Multiple of 48 */
16701da177e4SLinus Torvalds flags = NS_TBD_AAL5;
1671864a3ff6Schas williams - CONTRACTOR scqe.word_2 = cpu_to_le32(NS_PRV_DMA(skb));
1672864a3ff6Schas williams - CONTRACTOR scqe.word_3 = cpu_to_le32(skb->len);
1673098fde11Schas williams - CONTRACTOR scqe.word_4 =
1674098fde11Schas williams - CONTRACTOR ns_tbd_mkword_4(0, (u32) vcc->vpi, (u32) vcc->vci, 0,
1675098fde11Schas williams - CONTRACTOR ATM_SKB(skb)->
1676098fde11Schas williams - CONTRACTOR atm_options & ATM_ATMOPT_CLP ? 1 : 0);
16771da177e4SLinus Torvalds flags |= NS_TBD_EOPDU;
1678098fde11Schas williams - CONTRACTOR } else { /* (vcc->qos.aal == ATM_AAL0) */
1679098fde11Schas williams - CONTRACTOR
16801da177e4SLinus Torvalds buflen = ATM_CELL_PAYLOAD; /* i.e., 48 bytes */
16811da177e4SLinus Torvalds flags = NS_TBD_AAL0;
1682864a3ff6Schas williams - CONTRACTOR scqe.word_2 = cpu_to_le32(NS_PRV_DMA(skb) + NS_AAL0_HEADER);
16831da177e4SLinus Torvalds scqe.word_3 = cpu_to_le32(0x00000000);
16841da177e4SLinus Torvalds if (*skb->data & 0x02) /* Payload type 1 - end of pdu */
16851da177e4SLinus Torvalds flags |= NS_TBD_EOPDU;
1686098fde11Schas williams - CONTRACTOR scqe.word_4 =
1687098fde11Schas williams - CONTRACTOR cpu_to_le32(*((u32 *) skb->data) & ~NS_TBD_VC_MASK);
16881da177e4SLinus Torvalds /* Force the VPI/VCI to be the same as in VCC struct */
1689098fde11Schas williams - CONTRACTOR scqe.word_4 |=
1690098fde11Schas williams - CONTRACTOR cpu_to_le32((((u32) vcc->
1691098fde11Schas williams - CONTRACTOR vpi) << NS_TBD_VPI_SHIFT | ((u32) vcc->
1692098fde11Schas williams - CONTRACTOR vci) <<
1693098fde11Schas williams - CONTRACTOR NS_TBD_VCI_SHIFT) & NS_TBD_VC_MASK);
16941da177e4SLinus Torvalds }
16951da177e4SLinus Torvalds
1696098fde11Schas williams - CONTRACTOR if (vcc->qos.txtp.traffic_class == ATM_CBR) {
16971da177e4SLinus Torvalds scqe.word_1 = ns_tbd_mkword_1_novbr(flags, (u32) buflen);
16981da177e4SLinus Torvalds scq = ((vc_map *) vcc->dev_data)->scq;
1699098fde11Schas williams - CONTRACTOR } else {
1700098fde11Schas williams - CONTRACTOR scqe.word_1 =
1701098fde11Schas williams - CONTRACTOR ns_tbd_mkword_1(flags, (u32) 1, (u32) 1, (u32) buflen);
17021da177e4SLinus Torvalds scq = card->scq0;
17031da177e4SLinus Torvalds }
17041da177e4SLinus Torvalds
1705f2bcc2faSSebastian Andrzej Siewior if (push_scqe(card, vc, scq, &scqe, skb, may_sleep) != 0) {
17061da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err);
17076dceaa9fSSebastian Andrzej Siewior dma_unmap_single(&card->pcidev->dev, NS_PRV_DMA(skb), skb->len,
17086dceaa9fSSebastian Andrzej Siewior DMA_TO_DEVICE);
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
ns_send(struct atm_vcc * vcc,struct sk_buff * skb)1717f2bcc2faSSebastian Andrzej Siewior static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb)
1718f2bcc2faSSebastian Andrzej Siewior {
1719f2bcc2faSSebastian Andrzej Siewior return _ns_send(vcc, skb, true);
1720f2bcc2faSSebastian Andrzej Siewior }
1721f2bcc2faSSebastian Andrzej Siewior
ns_send_bh(struct atm_vcc * vcc,struct sk_buff * skb)1722f2bcc2faSSebastian Andrzej Siewior static int ns_send_bh(struct atm_vcc *vcc, struct sk_buff *skb)
1723f2bcc2faSSebastian Andrzej Siewior {
1724f2bcc2faSSebastian Andrzej Siewior return _ns_send(vcc, skb, false);
1725f2bcc2faSSebastian Andrzej Siewior }
1726f2bcc2faSSebastian Andrzej Siewior
push_scqe(ns_dev * card,vc_map * vc,scq_info * scq,ns_scqe * tbd,struct sk_buff * skb,bool may_sleep)17271da177e4SLinus Torvalds static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd,
1728f2bcc2faSSebastian Andrzej Siewior struct sk_buff *skb, bool may_sleep)
17291da177e4SLinus Torvalds {
17301da177e4SLinus Torvalds unsigned long flags;
17311da177e4SLinus Torvalds ns_scqe tsr;
17321da177e4SLinus Torvalds u32 scdi, scqi;
17331da177e4SLinus Torvalds int scq_is_vbr;
17341da177e4SLinus Torvalds u32 data;
17351da177e4SLinus Torvalds int index;
17361da177e4SLinus Torvalds
173736ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags);
1738098fde11Schas williams - CONTRACTOR while (scq->tail == scq->next) {
1739f2bcc2faSSebastian Andrzej Siewior if (!may_sleep) {
17401da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags);
17411da177e4SLinus Torvalds printk("nicstar%d: Error pushing TBD.\n", card->index);
17421da177e4SLinus Torvalds return 1;
17431da177e4SLinus Torvalds }
17441da177e4SLinus Torvalds
17451da177e4SLinus Torvalds scq->full = 1;
1746118ce7abSArnd Bergmann wait_event_interruptible_lock_irq_timeout(scq->scqfull_waitq,
1747118ce7abSArnd Bergmann scq->tail != scq->next,
1748118ce7abSArnd Bergmann scq->lock,
1749098fde11Schas williams - CONTRACTOR SCQFULL_TIMEOUT);
17501da177e4SLinus Torvalds
17511da177e4SLinus Torvalds if (scq->full) {
17521da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags);
1753098fde11Schas williams - CONTRACTOR printk("nicstar%d: Timeout pushing TBD.\n",
1754098fde11Schas williams - CONTRACTOR card->index);
17551da177e4SLinus Torvalds return 1;
17561da177e4SLinus Torvalds }
17571da177e4SLinus Torvalds }
17581da177e4SLinus Torvalds *scq->next = *tbd;
17591da177e4SLinus Torvalds index = (int)(scq->next - scq->base);
17601da177e4SLinus Torvalds scq->skb[index] = skb;
1761864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: sending skb at 0x%p (pos %d).\n",
1762864a3ff6Schas williams - CONTRACTOR card->index, skb, index);
1763864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: TBD written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%p.\n",
17641da177e4SLinus Torvalds card->index, le32_to_cpu(tbd->word_1), le32_to_cpu(tbd->word_2),
17651da177e4SLinus Torvalds le32_to_cpu(tbd->word_3), le32_to_cpu(tbd->word_4),
1766864a3ff6Schas williams - CONTRACTOR scq->next);
17671da177e4SLinus Torvalds if (scq->next == scq->last)
17681da177e4SLinus Torvalds scq->next = scq->base;
17691da177e4SLinus Torvalds else
17701da177e4SLinus Torvalds scq->next++;
17711da177e4SLinus Torvalds
17721da177e4SLinus Torvalds vc->tbd_count++;
1773098fde11Schas williams - CONTRACTOR if (scq->num_entries == VBR_SCQ_NUM_ENTRIES) {
17741da177e4SLinus Torvalds scq->tbd_count++;
17751da177e4SLinus Torvalds scq_is_vbr = 1;
1776098fde11Schas williams - CONTRACTOR } else
17771da177e4SLinus Torvalds scq_is_vbr = 0;
17781da177e4SLinus Torvalds
1779098fde11Schas williams - CONTRACTOR if (vc->tbd_count >= MAX_TBD_PER_VC
1780098fde11Schas williams - CONTRACTOR || scq->tbd_count >= MAX_TBD_PER_SCQ) {
17811da177e4SLinus Torvalds int has_run = 0;
17821da177e4SLinus Torvalds
1783098fde11Schas williams - CONTRACTOR while (scq->tail == scq->next) {
1784f2bcc2faSSebastian Andrzej Siewior if (!may_sleep) {
1785864a3ff6Schas williams - CONTRACTOR data = scq_virt_to_bus(scq, scq->next);
17861da177e4SLinus Torvalds ns_write_sram(card, scq->scd, &data, 1);
17871da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags);
1788098fde11Schas williams - CONTRACTOR printk("nicstar%d: Error pushing TSR.\n",
1789098fde11Schas williams - CONTRACTOR card->index);
17901da177e4SLinus Torvalds return 0;
17911da177e4SLinus Torvalds }
17921da177e4SLinus Torvalds
17931da177e4SLinus Torvalds scq->full = 1;
1794098fde11Schas williams - CONTRACTOR if (has_run++)
1795098fde11Schas williams - CONTRACTOR break;
1796118ce7abSArnd Bergmann wait_event_interruptible_lock_irq_timeout(scq->scqfull_waitq,
1797118ce7abSArnd Bergmann scq->tail != scq->next,
1798118ce7abSArnd Bergmann scq->lock,
1799098fde11Schas williams - CONTRACTOR SCQFULL_TIMEOUT);
18001da177e4SLinus Torvalds }
18011da177e4SLinus Torvalds
1802098fde11Schas williams - CONTRACTOR if (!scq->full) {
18031da177e4SLinus Torvalds tsr.word_1 = ns_tsr_mkword_1(NS_TSR_INTENABLE);
18041da177e4SLinus Torvalds if (scq_is_vbr)
18051da177e4SLinus Torvalds scdi = NS_TSR_SCDISVBR;
18061da177e4SLinus Torvalds else
18071da177e4SLinus Torvalds scdi = (vc->cbr_scd - NS_FRSCD) / NS_FRSCD_SIZE;
18081da177e4SLinus Torvalds scqi = scq->next - scq->base;
18091da177e4SLinus Torvalds tsr.word_2 = ns_tsr_mkword_2(scdi, scqi);
18101da177e4SLinus Torvalds tsr.word_3 = 0x00000000;
18111da177e4SLinus Torvalds tsr.word_4 = 0x00000000;
18121da177e4SLinus Torvalds
18131da177e4SLinus Torvalds *scq->next = tsr;
18141da177e4SLinus Torvalds index = (int)scqi;
18151da177e4SLinus Torvalds scq->skb[index] = NULL;
1816098fde11Schas williams - CONTRACTOR XPRINTK
1817864a3ff6Schas williams - CONTRACTOR ("nicstar%d: TSR written:\n0x%x\n0x%x\n0x%x\n0x%x\n at 0x%p.\n",
1818098fde11Schas williams - CONTRACTOR card->index, le32_to_cpu(tsr.word_1),
1819098fde11Schas williams - CONTRACTOR le32_to_cpu(tsr.word_2), le32_to_cpu(tsr.word_3),
1820864a3ff6Schas williams - CONTRACTOR le32_to_cpu(tsr.word_4), scq->next);
18211da177e4SLinus Torvalds if (scq->next == scq->last)
18221da177e4SLinus Torvalds scq->next = scq->base;
18231da177e4SLinus Torvalds else
18241da177e4SLinus Torvalds scq->next++;
18251da177e4SLinus Torvalds vc->tbd_count = 0;
18261da177e4SLinus Torvalds scq->tbd_count = 0;
1827098fde11Schas williams - CONTRACTOR } else
1828098fde11Schas williams - CONTRACTOR PRINTK("nicstar%d: Timeout pushing TSR.\n",
1829098fde11Schas williams - CONTRACTOR card->index);
18301da177e4SLinus Torvalds }
1831864a3ff6Schas williams - CONTRACTOR data = scq_virt_to_bus(scq, scq->next);
18321da177e4SLinus Torvalds ns_write_sram(card, scq->scd, &data, 1);
18331da177e4SLinus Torvalds
18341da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags);
18351da177e4SLinus Torvalds
18361da177e4SLinus Torvalds return 0;
18371da177e4SLinus Torvalds }
18381da177e4SLinus Torvalds
process_tsq(ns_dev * card)18391da177e4SLinus Torvalds static void process_tsq(ns_dev * card)
18401da177e4SLinus Torvalds {
18411da177e4SLinus Torvalds u32 scdi;
18421da177e4SLinus Torvalds scq_info *scq;
18431da177e4SLinus Torvalds ns_tsi *previous = NULL, *one_ahead, *two_ahead;
18441da177e4SLinus Torvalds int serviced_entries; /* flag indicating at least on entry was serviced */
18451da177e4SLinus Torvalds
18461da177e4SLinus Torvalds serviced_entries = 0;
18471da177e4SLinus Torvalds
18481da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last)
18491da177e4SLinus Torvalds one_ahead = card->tsq.base;
18501da177e4SLinus Torvalds else
18511da177e4SLinus Torvalds one_ahead = card->tsq.next + 1;
18521da177e4SLinus Torvalds
18531da177e4SLinus Torvalds if (one_ahead == card->tsq.last)
18541da177e4SLinus Torvalds two_ahead = card->tsq.base;
18551da177e4SLinus Torvalds else
18561da177e4SLinus Torvalds two_ahead = one_ahead + 1;
18571da177e4SLinus Torvalds
18581da177e4SLinus Torvalds while (!ns_tsi_isempty(card->tsq.next) || !ns_tsi_isempty(one_ahead) ||
18591da177e4SLinus Torvalds !ns_tsi_isempty(two_ahead))
18601da177e4SLinus Torvalds /* At most two empty, as stated in the 77201 errata */
18611da177e4SLinus Torvalds {
18621da177e4SLinus Torvalds serviced_entries = 1;
18631da177e4SLinus Torvalds
18641da177e4SLinus Torvalds /* Skip the one or two possible empty entries */
18651da177e4SLinus Torvalds while (ns_tsi_isempty(card->tsq.next)) {
18661da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last)
18671da177e4SLinus Torvalds card->tsq.next = card->tsq.base;
18681da177e4SLinus Torvalds else
18691da177e4SLinus Torvalds card->tsq.next++;
18701da177e4SLinus Torvalds }
18711da177e4SLinus Torvalds
1872098fde11Schas williams - CONTRACTOR if (!ns_tsi_tmrof(card->tsq.next)) {
18731da177e4SLinus Torvalds scdi = ns_tsi_getscdindex(card->tsq.next);
18741da177e4SLinus Torvalds if (scdi == NS_TSI_SCDISVBR)
18751da177e4SLinus Torvalds scq = card->scq0;
1876098fde11Schas williams - CONTRACTOR else {
1877098fde11Schas williams - CONTRACTOR if (card->scd2vc[scdi] == NULL) {
1878098fde11Schas williams - CONTRACTOR printk
1879098fde11Schas williams - CONTRACTOR ("nicstar%d: could not find VC from SCD index.\n",
18801da177e4SLinus Torvalds card->index);
18811da177e4SLinus Torvalds ns_tsi_init(card->tsq.next);
18821da177e4SLinus Torvalds return;
18831da177e4SLinus Torvalds }
18841da177e4SLinus Torvalds scq = card->scd2vc[scdi]->scq;
18851da177e4SLinus Torvalds }
18861da177e4SLinus Torvalds drain_scq(card, scq, ns_tsi_getscqpos(card->tsq.next));
18871da177e4SLinus Torvalds scq->full = 0;
18881da177e4SLinus Torvalds wake_up_interruptible(&(scq->scqfull_waitq));
18891da177e4SLinus Torvalds }
18901da177e4SLinus Torvalds
18911da177e4SLinus Torvalds ns_tsi_init(card->tsq.next);
18921da177e4SLinus Torvalds previous = card->tsq.next;
18931da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last)
18941da177e4SLinus Torvalds card->tsq.next = card->tsq.base;
18951da177e4SLinus Torvalds else
18961da177e4SLinus Torvalds card->tsq.next++;
18971da177e4SLinus Torvalds
18981da177e4SLinus Torvalds if (card->tsq.next == card->tsq.last)
18991da177e4SLinus Torvalds one_ahead = card->tsq.base;
19001da177e4SLinus Torvalds else
19011da177e4SLinus Torvalds one_ahead = card->tsq.next + 1;
19021da177e4SLinus Torvalds
19031da177e4SLinus Torvalds if (one_ahead == card->tsq.last)
19041da177e4SLinus Torvalds two_ahead = card->tsq.base;
19051da177e4SLinus Torvalds else
19061da177e4SLinus Torvalds two_ahead = one_ahead + 1;
19071da177e4SLinus Torvalds }
19081da177e4SLinus Torvalds
1909864a3ff6Schas williams - CONTRACTOR if (serviced_entries)
1910864a3ff6Schas williams - CONTRACTOR writel(PTR_DIFF(previous, card->tsq.base),
19111da177e4SLinus Torvalds card->membase + TSQH);
19121da177e4SLinus Torvalds }
19131da177e4SLinus Torvalds
drain_scq(ns_dev * card,scq_info * scq,int pos)19141da177e4SLinus Torvalds static void drain_scq(ns_dev * card, scq_info * scq, int pos)
19151da177e4SLinus Torvalds {
19161da177e4SLinus Torvalds struct atm_vcc *vcc;
19171da177e4SLinus Torvalds struct sk_buff *skb;
19181da177e4SLinus Torvalds int i;
19191da177e4SLinus Torvalds unsigned long flags;
19201da177e4SLinus Torvalds
1921864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: drain_scq() called, scq at 0x%p, pos %d.\n",
1922864a3ff6Schas williams - CONTRACTOR card->index, scq, pos);
1923098fde11Schas williams - CONTRACTOR if (pos >= scq->num_entries) {
19241da177e4SLinus Torvalds printk("nicstar%d: Bad index on drain_scq().\n", card->index);
19251da177e4SLinus Torvalds return;
19261da177e4SLinus Torvalds }
19271da177e4SLinus Torvalds
192836ef4080SMark Asselstine spin_lock_irqsave(&scq->lock, flags);
19291da177e4SLinus Torvalds i = (int)(scq->tail - scq->base);
19301da177e4SLinus Torvalds if (++i == scq->num_entries)
19311da177e4SLinus Torvalds i = 0;
1932098fde11Schas williams - CONTRACTOR while (i != pos) {
19331da177e4SLinus Torvalds skb = scq->skb[i];
1934864a3ff6Schas williams - CONTRACTOR XPRINTK("nicstar%d: freeing skb at 0x%p (index %d).\n",
1935864a3ff6Schas williams - CONTRACTOR card->index, skb, i);
1936098fde11Schas williams - CONTRACTOR if (skb != NULL) {
1937ede58ef2Schas williams - CONTRACTOR dma_unmap_single(&card->pcidev->dev,
1938864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb),
1939864a3ff6Schas williams - CONTRACTOR skb->len,
1940ede58ef2Schas williams - CONTRACTOR DMA_TO_DEVICE);
19411da177e4SLinus Torvalds vcc = ATM_SKB(skb)->vcc;
19421da177e4SLinus Torvalds if (vcc && vcc->pop != NULL) {
19431da177e4SLinus Torvalds vcc->pop(vcc, skb);
19441da177e4SLinus Torvalds } else {
19451da177e4SLinus Torvalds dev_kfree_skb_irq(skb);
19461da177e4SLinus Torvalds }
19471da177e4SLinus Torvalds scq->skb[i] = NULL;
19481da177e4SLinus Torvalds }
19491da177e4SLinus Torvalds if (++i == scq->num_entries)
19501da177e4SLinus Torvalds i = 0;
19511da177e4SLinus Torvalds }
19521da177e4SLinus Torvalds scq->tail = scq->base + pos;
19531da177e4SLinus Torvalds spin_unlock_irqrestore(&scq->lock, flags);
19541da177e4SLinus Torvalds }
19551da177e4SLinus Torvalds
process_rsq(ns_dev * card)19561da177e4SLinus Torvalds static void process_rsq(ns_dev * card)
19571da177e4SLinus Torvalds {
19581da177e4SLinus Torvalds ns_rsqe *previous;
19591da177e4SLinus Torvalds
19601da177e4SLinus Torvalds if (!ns_rsqe_valid(card->rsq.next))
19611da177e4SLinus Torvalds return;
19622087ff3eSDavid Howells do {
19631da177e4SLinus Torvalds dequeue_rx(card, card->rsq.next);
19641da177e4SLinus Torvalds ns_rsqe_init(card->rsq.next);
19651da177e4SLinus Torvalds previous = card->rsq.next;
19661da177e4SLinus Torvalds if (card->rsq.next == card->rsq.last)
19671da177e4SLinus Torvalds card->rsq.next = card->rsq.base;
19681da177e4SLinus Torvalds else
19691da177e4SLinus Torvalds card->rsq.next++;
19702087ff3eSDavid Howells } while (ns_rsqe_valid(card->rsq.next));
1971864a3ff6Schas williams - CONTRACTOR writel(PTR_DIFF(previous, card->rsq.base), card->membase + RSQH);
19721da177e4SLinus Torvalds }
19731da177e4SLinus Torvalds
dequeue_rx(ns_dev * card,ns_rsqe * rsqe)19741da177e4SLinus Torvalds static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
19751da177e4SLinus Torvalds {
19761da177e4SLinus Torvalds u32 vpi, vci;
19771da177e4SLinus Torvalds vc_map *vc;
19781da177e4SLinus Torvalds struct sk_buff *iovb;
19791da177e4SLinus Torvalds struct iovec *iov;
19801da177e4SLinus Torvalds struct atm_vcc *vcc;
19811da177e4SLinus Torvalds struct sk_buff *skb;
19821da177e4SLinus Torvalds unsigned short aal5_len;
19831da177e4SLinus Torvalds int len;
19841da177e4SLinus Torvalds u32 stat;
1985864a3ff6Schas williams - CONTRACTOR u32 id;
19861da177e4SLinus Torvalds
19871da177e4SLinus Torvalds stat = readl(card->membase + STAT);
19881da177e4SLinus Torvalds card->sbfqc = ns_stat_sfbqc_get(stat);
19891da177e4SLinus Torvalds card->lbfqc = ns_stat_lfbqc_get(stat);
19901da177e4SLinus Torvalds
1991864a3ff6Schas williams - CONTRACTOR id = le32_to_cpu(rsqe->buffer_handle);
1992d3e709e6SMatthew Wilcox skb = idr_remove(&card->idr, id);
1993864a3ff6Schas williams - CONTRACTOR if (!skb) {
1994864a3ff6Schas williams - CONTRACTOR RXPRINTK(KERN_ERR
1995d3e709e6SMatthew Wilcox "nicstar%d: skb not found!\n", card->index);
1996864a3ff6Schas williams - CONTRACTOR return;
1997864a3ff6Schas williams - CONTRACTOR }
1998ede58ef2Schas williams - CONTRACTOR dma_sync_single_for_cpu(&card->pcidev->dev,
1999864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb),
2000864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM
2001864a3ff6Schas williams - CONTRACTOR ? NS_SMSKBSIZE : NS_LGSKBSIZE),
2002ede58ef2Schas williams - CONTRACTOR DMA_FROM_DEVICE);
2003ede58ef2Schas williams - CONTRACTOR dma_unmap_single(&card->pcidev->dev,
2004864a3ff6Schas williams - CONTRACTOR NS_PRV_DMA(skb),
2005864a3ff6Schas williams - CONTRACTOR (NS_PRV_BUFTYPE(skb) == BUF_SM
2006864a3ff6Schas williams - CONTRACTOR ? NS_SMSKBSIZE : NS_LGSKBSIZE),
2007ede58ef2Schas williams - CONTRACTOR DMA_FROM_DEVICE);
20081da177e4SLinus Torvalds vpi = ns_rsqe_vpi(rsqe);
20091da177e4SLinus Torvalds vci = ns_rsqe_vci(rsqe);
2010098fde11Schas williams - CONTRACTOR if (vpi >= 1UL << card->vpibits || vci >= 1UL << card->vcibits) {
20111da177e4SLinus Torvalds printk("nicstar%d: SDU received for out-of-range vc %d.%d.\n",
20121da177e4SLinus Torvalds card->index, vpi, vci);
20131da177e4SLinus Torvalds recycle_rx_buf(card, skb);
20141da177e4SLinus Torvalds return;
20151da177e4SLinus Torvalds }
20161da177e4SLinus Torvalds
20171da177e4SLinus Torvalds vc = &(card->vcmap[vpi << card->vcibits | vci]);
2018098fde11Schas williams - CONTRACTOR if (!vc->rx) {
20191da177e4SLinus Torvalds RXPRINTK("nicstar%d: SDU received on non-rx vc %d.%d.\n",
20201da177e4SLinus Torvalds card->index, vpi, vci);
20211da177e4SLinus Torvalds recycle_rx_buf(card, skb);
20221da177e4SLinus Torvalds return;
20231da177e4SLinus Torvalds }
20241da177e4SLinus Torvalds
20251da177e4SLinus Torvalds vcc = vc->rx_vcc;
20261da177e4SLinus Torvalds
2027098fde11Schas williams - CONTRACTOR if (vcc->qos.aal == ATM_AAL0) {
20281da177e4SLinus Torvalds struct sk_buff *sb;
20291da177e4SLinus Torvalds unsigned char *cell;
20301da177e4SLinus Torvalds int i;
20311da177e4SLinus Torvalds
20321da177e4SLinus Torvalds cell = skb->data;
2033098fde11Schas williams - CONTRACTOR for (i = ns_rsqe_cellcount(rsqe); i; i--) {
20340ba8abb7SMarkus Elfring sb = dev_alloc_skb(NS_SMSKBSIZE);
20350ba8abb7SMarkus Elfring if (!sb) {
2036098fde11Schas williams - CONTRACTOR printk
2037098fde11Schas williams - CONTRACTOR ("nicstar%d: Can't allocate buffers for aal0.\n",
20381da177e4SLinus Torvalds card->index);
20391da177e4SLinus Torvalds atomic_add(i, &vcc->stats->rx_drop);
20401da177e4SLinus Torvalds break;
20411da177e4SLinus Torvalds }
2042098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, sb->truesize)) {
2043098fde11Schas williams - CONTRACTOR RXPRINTK
2044098fde11Schas williams - CONTRACTOR ("nicstar%d: atm_charge() dropped aal0 packets.\n",
20451da177e4SLinus Torvalds card->index);
20461da177e4SLinus Torvalds atomic_add(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */
20471da177e4SLinus Torvalds dev_kfree_skb_any(sb);
20481da177e4SLinus Torvalds break;
20491da177e4SLinus Torvalds }
20501da177e4SLinus Torvalds /* Rebuild the header */
20511da177e4SLinus Torvalds *((u32 *) sb->data) = le32_to_cpu(rsqe->word_1) << 4 |
20521da177e4SLinus Torvalds (ns_rsqe_clp(rsqe) ? 0x00000001 : 0x00000000);
20531da177e4SLinus Torvalds if (i == 1 && ns_rsqe_eopdu(rsqe))
20541da177e4SLinus Torvalds *((u32 *) sb->data) |= 0x00000002;
20551da177e4SLinus Torvalds skb_put(sb, NS_AAL0_HEADER);
205627a884dcSArnaldo Carvalho de Melo memcpy(skb_tail_pointer(sb), cell, ATM_CELL_PAYLOAD);
20571da177e4SLinus Torvalds skb_put(sb, ATM_CELL_PAYLOAD);
20581da177e4SLinus Torvalds ATM_SKB(sb)->vcc = vcc;
2059a61bbcf2SPatrick McHardy __net_timestamp(sb);
20601da177e4SLinus Torvalds vcc->push(vcc, sb);
20611da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx);
20621da177e4SLinus Torvalds cell += ATM_CELL_PAYLOAD;
20631da177e4SLinus Torvalds }
20641da177e4SLinus Torvalds
20651da177e4SLinus Torvalds recycle_rx_buf(card, skb);
20661da177e4SLinus Torvalds return;
20671da177e4SLinus Torvalds }
20681da177e4SLinus Torvalds
20691da177e4SLinus Torvalds /* To reach this point, the AAL layer can only be AAL5 */
20701da177e4SLinus Torvalds
2071098fde11Schas williams - CONTRACTOR if ((iovb = vc->rx_iov) == NULL) {
20721da177e4SLinus Torvalds iovb = skb_dequeue(&(card->iovpool.queue));
2073098fde11Schas williams - CONTRACTOR if (iovb == NULL) { /* No buffers in the queue */
20741da177e4SLinus Torvalds iovb = alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC);
2075098fde11Schas williams - CONTRACTOR if (iovb == NULL) {
2076098fde11Schas williams - CONTRACTOR printk("nicstar%d: Out of iovec buffers.\n",
2077098fde11Schas williams - CONTRACTOR card->index);
20781da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop);
20791da177e4SLinus Torvalds recycle_rx_buf(card, skb);
20801da177e4SLinus Torvalds return;
20811da177e4SLinus Torvalds }
2082864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE;
2083098fde11Schas williams - CONTRACTOR } else if (--card->iovpool.count < card->iovnr.min) {
20841da177e4SLinus Torvalds struct sk_buff *new_iovb;
2085098fde11Schas williams - CONTRACTOR if ((new_iovb =
2086098fde11Schas williams - CONTRACTOR alloc_skb(NS_IOVBUFSIZE, GFP_ATOMIC)) != NULL) {
2087864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE;
20881da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, new_iovb);
20891da177e4SLinus Torvalds card->iovpool.count++;
20901da177e4SLinus Torvalds }
20911da177e4SLinus Torvalds }
20921da177e4SLinus Torvalds vc->rx_iov = iovb;
2093864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb) = 0;
20941da177e4SLinus Torvalds iovb->len = 0;
209527a884dcSArnaldo Carvalho de Melo iovb->data = iovb->head;
209627a884dcSArnaldo Carvalho de Melo skb_reset_tail_pointer(iovb);
20971da177e4SLinus Torvalds /* IMPORTANT: a pointer to the sk_buff containing the small or large
20981da177e4SLinus Torvalds buffer is stored as iovec base, NOT a pointer to the
20991da177e4SLinus Torvalds small or large buffer itself. */
2100864a3ff6Schas williams - CONTRACTOR } else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) {
21011da177e4SLinus Torvalds printk("nicstar%d: received too big AAL5 SDU.\n", card->index);
21021da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err);
2103098fde11Schas williams - CONTRACTOR recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
2104098fde11Schas williams - CONTRACTOR NS_MAX_IOVECS);
2105864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb) = 0;
21061da177e4SLinus Torvalds iovb->len = 0;
210727a884dcSArnaldo Carvalho de Melo iovb->data = iovb->head;
210827a884dcSArnaldo Carvalho de Melo skb_reset_tail_pointer(iovb);
21091da177e4SLinus Torvalds }
2110864a3ff6Schas williams - CONTRACTOR iov = &((struct iovec *)iovb->data)[NS_PRV_IOVCNT(iovb)++];
21111da177e4SLinus Torvalds iov->iov_base = (void *)skb;
21121da177e4SLinus Torvalds iov->iov_len = ns_rsqe_cellcount(rsqe) * 48;
21131da177e4SLinus Torvalds iovb->len += iov->iov_len;
21141da177e4SLinus Torvalds
2115864a3ff6Schas williams - CONTRACTOR #ifdef EXTRA_DEBUG
2116864a3ff6Schas williams - CONTRACTOR if (NS_PRV_IOVCNT(iovb) == 1) {
2117864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) != BUF_SM) {
2118098fde11Schas williams - CONTRACTOR printk
2119098fde11Schas williams - CONTRACTOR ("nicstar%d: Expected a small buffer, and this is not one.\n",
21201da177e4SLinus Torvalds card->index);
21211da177e4SLinus Torvalds which_list(card, skb);
21221da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err);
21231da177e4SLinus Torvalds recycle_rx_buf(card, skb);
21241da177e4SLinus Torvalds vc->rx_iov = NULL;
21251da177e4SLinus Torvalds recycle_iov_buf(card, iovb);
21261da177e4SLinus Torvalds return;
21271da177e4SLinus Torvalds }
2128864a3ff6Schas williams - CONTRACTOR } else { /* NS_PRV_IOVCNT(iovb) >= 2 */
2129098fde11Schas williams - CONTRACTOR
2130864a3ff6Schas williams - CONTRACTOR if (NS_PRV_BUFTYPE(skb) != BUF_LG) {
2131098fde11Schas williams - CONTRACTOR printk
2132098fde11Schas williams - CONTRACTOR ("nicstar%d: Expected a large buffer, and this is not one.\n",
21331da177e4SLinus Torvalds card->index);
21341da177e4SLinus Torvalds which_list(card, skb);
21351da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err);
21361da177e4SLinus Torvalds recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
2137864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb));
21381da177e4SLinus Torvalds vc->rx_iov = NULL;
21391da177e4SLinus Torvalds recycle_iov_buf(card, iovb);
21401da177e4SLinus Torvalds return;
21411da177e4SLinus Torvalds }
21421da177e4SLinus Torvalds }
2143864a3ff6Schas williams - CONTRACTOR #endif /* EXTRA_DEBUG */
21441da177e4SLinus Torvalds
2145098fde11Schas williams - CONTRACTOR if (ns_rsqe_eopdu(rsqe)) {
21461da177e4SLinus Torvalds /* This works correctly regardless of the endianness of the host */
2147864a3ff6Schas williams - CONTRACTOR unsigned char *L1L2 = (unsigned char *)
2148864a3ff6Schas williams - CONTRACTOR (skb->data + iov->iov_len - 6);
21491da177e4SLinus Torvalds aal5_len = L1L2[0] << 8 | L1L2[1];
21501da177e4SLinus Torvalds len = (aal5_len == 0x0000) ? 0x10000 : aal5_len;
21511da177e4SLinus Torvalds if (ns_rsqe_crcerr(rsqe) ||
2152098fde11Schas williams - CONTRACTOR len + 8 > iovb->len || len + (47 + 8) < iovb->len) {
21531da177e4SLinus Torvalds printk("nicstar%d: AAL5 CRC error", card->index);
21541da177e4SLinus Torvalds if (len + 8 > iovb->len || len + (47 + 8) < iovb->len)
21551da177e4SLinus Torvalds printk(" - PDU size mismatch.\n");
21561da177e4SLinus Torvalds else
21571da177e4SLinus Torvalds printk(".\n");
21581da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err);
21591da177e4SLinus Torvalds recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
2160864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb));
21611da177e4SLinus Torvalds vc->rx_iov = NULL;
21621da177e4SLinus Torvalds recycle_iov_buf(card, iovb);
21631da177e4SLinus Torvalds return;
21641da177e4SLinus Torvalds }
21651da177e4SLinus Torvalds
21661da177e4SLinus Torvalds /* By this point we (hopefully) have a complete SDU without errors. */
21671da177e4SLinus Torvalds
2168864a3ff6Schas williams - CONTRACTOR if (NS_PRV_IOVCNT(iovb) == 1) { /* Just a small buffer */
21691da177e4SLinus Torvalds /* skb points to a small buffer */
2170098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, skb->truesize)) {
21718728b834SDavid S. Miller push_rxbufs(card, skb);
21721da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop);
2173098fde11Schas williams - CONTRACTOR } else {
21741da177e4SLinus Torvalds skb_put(skb, len);
21751da177e4SLinus Torvalds dequeue_sm_buf(card, skb);
21761da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc;
2177a61bbcf2SPatrick McHardy __net_timestamp(skb);
21781da177e4SLinus Torvalds vcc->push(vcc, skb);
21791da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx);
21801da177e4SLinus Torvalds }
2181864a3ff6Schas williams - CONTRACTOR } else if (NS_PRV_IOVCNT(iovb) == 2) { /* One small plus one large buffer */
21821da177e4SLinus Torvalds struct sk_buff *sb;
21831da177e4SLinus Torvalds
21841da177e4SLinus Torvalds sb = (struct sk_buff *)(iov - 1)->iov_base;
21851da177e4SLinus Torvalds /* skb points to a large buffer */
21861da177e4SLinus Torvalds
2187098fde11Schas williams - CONTRACTOR if (len <= NS_SMBUFSIZE) {
2188098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, sb->truesize)) {
21898728b834SDavid S. Miller push_rxbufs(card, sb);
21901da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop);
2191098fde11Schas williams - CONTRACTOR } else {
21921da177e4SLinus Torvalds skb_put(sb, len);
21931da177e4SLinus Torvalds dequeue_sm_buf(card, sb);
21941da177e4SLinus Torvalds ATM_SKB(sb)->vcc = vcc;
2195a61bbcf2SPatrick McHardy __net_timestamp(sb);
21961da177e4SLinus Torvalds vcc->push(vcc, sb);
21971da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx);
21981da177e4SLinus Torvalds }
21991da177e4SLinus Torvalds
22008728b834SDavid S. Miller push_rxbufs(card, skb);
22011da177e4SLinus Torvalds
2202098fde11Schas williams - CONTRACTOR } else { /* len > NS_SMBUFSIZE, the usual case */
2203098fde11Schas williams - CONTRACTOR
2204098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, skb->truesize)) {
22058728b834SDavid S. Miller push_rxbufs(card, skb);
22061da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop);
2207098fde11Schas williams - CONTRACTOR } else {
22081da177e4SLinus Torvalds dequeue_lg_buf(card, skb);
22091da177e4SLinus Torvalds skb_push(skb, NS_SMBUFSIZE);
2210098fde11Schas williams - CONTRACTOR skb_copy_from_linear_data(sb, skb->data,
2211098fde11Schas williams - CONTRACTOR NS_SMBUFSIZE);
22121da177e4SLinus Torvalds skb_put(skb, len - NS_SMBUFSIZE);
22131da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc;
2214a61bbcf2SPatrick McHardy __net_timestamp(skb);
22151da177e4SLinus Torvalds vcc->push(vcc, skb);
22161da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx);
22171da177e4SLinus Torvalds }
22181da177e4SLinus Torvalds
22198728b834SDavid S. Miller push_rxbufs(card, sb);
22201da177e4SLinus Torvalds
22211da177e4SLinus Torvalds }
22221da177e4SLinus Torvalds
2223098fde11Schas williams - CONTRACTOR } else { /* Must push a huge buffer */
2224098fde11Schas williams - CONTRACTOR
22251da177e4SLinus Torvalds struct sk_buff *hb, *sb, *lb;
22261da177e4SLinus Torvalds int remaining, tocopy;
22271da177e4SLinus Torvalds int j;
22281da177e4SLinus Torvalds
22291da177e4SLinus Torvalds hb = skb_dequeue(&(card->hbpool.queue));
2230098fde11Schas williams - CONTRACTOR if (hb == NULL) { /* No buffers in the queue */
22311da177e4SLinus Torvalds
22321da177e4SLinus Torvalds hb = dev_alloc_skb(NS_HBUFSIZE);
2233098fde11Schas williams - CONTRACTOR if (hb == NULL) {
2234098fde11Schas williams - CONTRACTOR printk
2235098fde11Schas williams - CONTRACTOR ("nicstar%d: Out of huge buffers.\n",
2236098fde11Schas williams - CONTRACTOR card->index);
22371da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop);
2238098fde11Schas williams - CONTRACTOR recycle_iovec_rx_bufs(card,
2239098fde11Schas williams - CONTRACTOR (struct iovec *)
2240098fde11Schas williams - CONTRACTOR iovb->data,
2241864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb));
22421da177e4SLinus Torvalds vc->rx_iov = NULL;
22431da177e4SLinus Torvalds recycle_iov_buf(card, iovb);
22441da177e4SLinus Torvalds return;
2245098fde11Schas williams - CONTRACTOR } else if (card->hbpool.count < card->hbnr.min) {
22461da177e4SLinus Torvalds struct sk_buff *new_hb;
2247098fde11Schas williams - CONTRACTOR if ((new_hb =
2248098fde11Schas williams - CONTRACTOR dev_alloc_skb(NS_HBUFSIZE)) !=
2249098fde11Schas williams - CONTRACTOR NULL) {
2250098fde11Schas williams - CONTRACTOR skb_queue_tail(&card->hbpool.
2251098fde11Schas williams - CONTRACTOR queue, new_hb);
22521da177e4SLinus Torvalds card->hbpool.count++;
22531da177e4SLinus Torvalds }
22541da177e4SLinus Torvalds }
2255864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(hb) = BUF_NONE;
2256098fde11Schas williams - CONTRACTOR } else if (--card->hbpool.count < card->hbnr.min) {
22571da177e4SLinus Torvalds struct sk_buff *new_hb;
2258098fde11Schas williams - CONTRACTOR if ((new_hb =
2259098fde11Schas williams - CONTRACTOR dev_alloc_skb(NS_HBUFSIZE)) != NULL) {
2260864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_hb) = BUF_NONE;
2261098fde11Schas williams - CONTRACTOR skb_queue_tail(&card->hbpool.queue,
2262098fde11Schas williams - CONTRACTOR new_hb);
22631da177e4SLinus Torvalds card->hbpool.count++;
22641da177e4SLinus Torvalds }
2265098fde11Schas williams - CONTRACTOR if (card->hbpool.count < card->hbnr.min) {
2266098fde11Schas williams - CONTRACTOR if ((new_hb =
2267098fde11Schas williams - CONTRACTOR dev_alloc_skb(NS_HBUFSIZE)) !=
2268098fde11Schas williams - CONTRACTOR NULL) {
2269864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_hb) =
2270098fde11Schas williams - CONTRACTOR BUF_NONE;
2271098fde11Schas williams - CONTRACTOR skb_queue_tail(&card->hbpool.
2272098fde11Schas williams - CONTRACTOR queue, new_hb);
22731da177e4SLinus Torvalds card->hbpool.count++;
22741da177e4SLinus Torvalds }
22751da177e4SLinus Torvalds }
22761da177e4SLinus Torvalds }
22771da177e4SLinus Torvalds
22781da177e4SLinus Torvalds iov = (struct iovec *)iovb->data;
22791da177e4SLinus Torvalds
2280098fde11Schas williams - CONTRACTOR if (!atm_charge(vcc, hb->truesize)) {
2281098fde11Schas williams - CONTRACTOR recycle_iovec_rx_bufs(card, iov,
2282864a3ff6Schas williams - CONTRACTOR NS_PRV_IOVCNT(iovb));
2283098fde11Schas williams - CONTRACTOR if (card->hbpool.count < card->hbnr.max) {
22841da177e4SLinus Torvalds skb_queue_tail(&card->hbpool.queue, hb);
22851da177e4SLinus Torvalds card->hbpool.count++;
2286098fde11Schas williams - CONTRACTOR } else
22871da177e4SLinus Torvalds dev_kfree_skb_any(hb);
22881da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop);
2289098fde11Schas williams - CONTRACTOR } else {
22901da177e4SLinus Torvalds /* Copy the small buffer to the huge buffer */
22911da177e4SLinus Torvalds sb = (struct sk_buff *)iov->iov_base;
2292098fde11Schas williams - CONTRACTOR skb_copy_from_linear_data(sb, hb->data,
2293098fde11Schas williams - CONTRACTOR iov->iov_len);
22941da177e4SLinus Torvalds skb_put(hb, iov->iov_len);
22951da177e4SLinus Torvalds remaining = len - iov->iov_len;
22961da177e4SLinus Torvalds iov++;
22971da177e4SLinus Torvalds /* Free the small buffer */
22988728b834SDavid S. Miller push_rxbufs(card, sb);
22991da177e4SLinus Torvalds
23001da177e4SLinus Torvalds /* Copy all large buffers to the huge buffer and free them */
2301864a3ff6Schas williams - CONTRACTOR for (j = 1; j < NS_PRV_IOVCNT(iovb); j++) {
23021da177e4SLinus Torvalds lb = (struct sk_buff *)iov->iov_base;
2303098fde11Schas williams - CONTRACTOR tocopy =
2304098fde11Schas williams - CONTRACTOR min_t(int, remaining, iov->iov_len);
2305098fde11Schas williams - CONTRACTOR skb_copy_from_linear_data(lb,
2306098fde11Schas williams - CONTRACTOR skb_tail_pointer
2307098fde11Schas williams - CONTRACTOR (hb), tocopy);
23081da177e4SLinus Torvalds skb_put(hb, tocopy);
23091da177e4SLinus Torvalds iov++;
23101da177e4SLinus Torvalds remaining -= tocopy;
23118728b834SDavid S. Miller push_rxbufs(card, lb);
23121da177e4SLinus Torvalds }
23131da177e4SLinus Torvalds #ifdef EXTRA_DEBUG
23141da177e4SLinus Torvalds if (remaining != 0 || hb->len != len)
2315098fde11Schas williams - CONTRACTOR printk
2316098fde11Schas williams - CONTRACTOR ("nicstar%d: Huge buffer len mismatch.\n",
2317098fde11Schas williams - CONTRACTOR card->index);
23181da177e4SLinus Torvalds #endif /* EXTRA_DEBUG */
23191da177e4SLinus Torvalds ATM_SKB(hb)->vcc = vcc;
2320a61bbcf2SPatrick McHardy __net_timestamp(hb);
23211da177e4SLinus Torvalds vcc->push(vcc, hb);
23221da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx);
23231da177e4SLinus Torvalds }
23241da177e4SLinus Torvalds }
23251da177e4SLinus Torvalds
23261da177e4SLinus Torvalds vc->rx_iov = NULL;
23271da177e4SLinus Torvalds recycle_iov_buf(card, iovb);
23281da177e4SLinus Torvalds }
23291da177e4SLinus Torvalds
23301da177e4SLinus Torvalds }
23311da177e4SLinus Torvalds
recycle_rx_buf(ns_dev * card,struct sk_buff * skb)23321da177e4SLinus Torvalds static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb)
23331da177e4SLinus Torvalds {
2334864a3ff6Schas williams - CONTRACTOR if (unlikely(NS_PRV_BUFTYPE(skb) == BUF_NONE)) {
2335098fde11Schas williams - CONTRACTOR printk("nicstar%d: What kind of rx buffer is this?\n",
2336098fde11Schas williams - CONTRACTOR card->index);
23371da177e4SLinus Torvalds dev_kfree_skb_any(skb);
23388728b834SDavid S. Miller } else
23398728b834SDavid S. Miller push_rxbufs(card, skb);
23401da177e4SLinus Torvalds }
23411da177e4SLinus Torvalds
recycle_iovec_rx_bufs(ns_dev * card,struct iovec * iov,int count)23421da177e4SLinus Torvalds static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count)
23431da177e4SLinus Torvalds {
23448728b834SDavid S. Miller while (count-- > 0)
23458728b834SDavid S. Miller recycle_rx_buf(card, (struct sk_buff *)(iov++)->iov_base);
23461da177e4SLinus Torvalds }
23471da177e4SLinus Torvalds
recycle_iov_buf(ns_dev * card,struct sk_buff * iovb)23481da177e4SLinus Torvalds static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb)
23491da177e4SLinus Torvalds {
2350098fde11Schas williams - CONTRACTOR if (card->iovpool.count < card->iovnr.max) {
23511da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, iovb);
23521da177e4SLinus Torvalds card->iovpool.count++;
2353098fde11Schas williams - CONTRACTOR } else
23541da177e4SLinus Torvalds dev_kfree_skb_any(iovb);
23551da177e4SLinus Torvalds }
23561da177e4SLinus Torvalds
dequeue_sm_buf(ns_dev * card,struct sk_buff * sb)23571da177e4SLinus Torvalds static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb)
23581da177e4SLinus Torvalds {
23598728b834SDavid S. Miller skb_unlink(sb, &card->sbpool.queue);
2360098fde11Schas williams - CONTRACTOR if (card->sbfqc < card->sbnr.init) {
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 if (card->sbfqc < card->sbnr.init)
23701da177e4SLinus Torvalds {
23711da177e4SLinus Torvalds struct sk_buff *new_sb;
2372098fde11Schas williams - CONTRACTOR if ((new_sb = dev_alloc_skb(NS_SMSKBSIZE)) != NULL) {
2373864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_sb) = BUF_SM;
23741da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, new_sb);
23751da177e4SLinus Torvalds skb_reserve(new_sb, NS_AAL0_HEADER);
23768728b834SDavid S. Miller push_rxbufs(card, new_sb);
23771da177e4SLinus Torvalds }
23781da177e4SLinus Torvalds }
23791da177e4SLinus Torvalds }
23801da177e4SLinus Torvalds
dequeue_lg_buf(ns_dev * card,struct sk_buff * lb)23811da177e4SLinus Torvalds static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb)
23821da177e4SLinus Torvalds {
23838728b834SDavid S. Miller skb_unlink(lb, &card->lbpool.queue);
2384098fde11Schas williams - CONTRACTOR if (card->lbfqc < card->lbnr.init) {
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 if (card->lbfqc < card->lbnr.init)
23941da177e4SLinus Torvalds {
23951da177e4SLinus Torvalds struct sk_buff *new_lb;
2396098fde11Schas williams - CONTRACTOR if ((new_lb = dev_alloc_skb(NS_LGSKBSIZE)) != NULL) {
2397864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(new_lb) = BUF_LG;
23981da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, new_lb);
23991da177e4SLinus Torvalds skb_reserve(new_lb, NS_SMBUFSIZE);
24008728b834SDavid S. Miller push_rxbufs(card, new_lb);
24011da177e4SLinus Torvalds }
24021da177e4SLinus Torvalds }
24031da177e4SLinus Torvalds }
24041da177e4SLinus Torvalds
ns_proc_read(struct atm_dev * dev,loff_t * pos,char * page)24051da177e4SLinus Torvalds static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page)
24061da177e4SLinus Torvalds {
24071da177e4SLinus Torvalds u32 stat;
24081da177e4SLinus Torvalds ns_dev *card;
24091da177e4SLinus Torvalds int left;
24101da177e4SLinus Torvalds
24111da177e4SLinus Torvalds left = (int)*pos;
24121da177e4SLinus Torvalds card = (ns_dev *) dev->dev_data;
24131da177e4SLinus Torvalds stat = readl(card->membase + STAT);
24141da177e4SLinus Torvalds if (!left--)
24151da177e4SLinus Torvalds return sprintf(page, "Pool count min init max \n");
24161da177e4SLinus Torvalds if (!left--)
24171da177e4SLinus Torvalds return sprintf(page, "Small %5d %5d %5d %5d \n",
2418098fde11Schas williams - CONTRACTOR ns_stat_sfbqc_get(stat), card->sbnr.min,
2419098fde11Schas williams - CONTRACTOR card->sbnr.init, card->sbnr.max);
24201da177e4SLinus Torvalds if (!left--)
24211da177e4SLinus Torvalds return sprintf(page, "Large %5d %5d %5d %5d \n",
2422098fde11Schas williams - CONTRACTOR ns_stat_lfbqc_get(stat), card->lbnr.min,
2423098fde11Schas williams - CONTRACTOR card->lbnr.init, card->lbnr.max);
24241da177e4SLinus Torvalds if (!left--)
2425098fde11Schas williams - CONTRACTOR return sprintf(page, "Huge %5d %5d %5d %5d \n",
2426098fde11Schas williams - CONTRACTOR card->hbpool.count, card->hbnr.min,
2427098fde11Schas williams - CONTRACTOR card->hbnr.init, card->hbnr.max);
24281da177e4SLinus Torvalds if (!left--)
2429098fde11Schas williams - CONTRACTOR return sprintf(page, "Iovec %5d %5d %5d %5d \n",
2430098fde11Schas williams - CONTRACTOR card->iovpool.count, card->iovnr.min,
2431098fde11Schas williams - CONTRACTOR card->iovnr.init, card->iovnr.max);
2432098fde11Schas williams - CONTRACTOR if (!left--) {
24331da177e4SLinus Torvalds int retval;
2434098fde11Schas williams - CONTRACTOR retval =
2435098fde11Schas williams - CONTRACTOR sprintf(page, "Interrupt counter: %u \n", card->intcnt);
24361da177e4SLinus Torvalds card->intcnt = 0;
24371da177e4SLinus Torvalds return retval;
24381da177e4SLinus Torvalds }
24391da177e4SLinus Torvalds #if 0
24401da177e4SLinus Torvalds /* Dump 25.6 Mbps PHY registers */
24411da177e4SLinus Torvalds /* Now there's a 25.6 Mbps PHY driver this code isn't needed. I left it
24421da177e4SLinus Torvalds here just in case it's needed for debugging. */
2443098fde11Schas williams - CONTRACTOR if (card->max_pcr == ATM_25_PCR && !left--) {
24441da177e4SLinus Torvalds u32 phy_regs[4];
24451da177e4SLinus Torvalds u32 i;
24461da177e4SLinus Torvalds
2447098fde11Schas williams - CONTRACTOR for (i = 0; i < 4; i++) {
24481da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
2449098fde11Schas williams - CONTRACTOR writel(NS_CMD_READ_UTILITY | 0x00000200 | i,
2450098fde11Schas williams - CONTRACTOR card->membase + CMD);
24511da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
24521da177e4SLinus Torvalds phy_regs[i] = readl(card->membase + DR0) & 0x000000FF;
24531da177e4SLinus Torvalds }
24541da177e4SLinus Torvalds
24551da177e4SLinus Torvalds return sprintf(page, "PHY regs: 0x%02X 0x%02X 0x%02X 0x%02X \n",
2456098fde11Schas williams - CONTRACTOR phy_regs[0], phy_regs[1], phy_regs[2],
2457098fde11Schas williams - CONTRACTOR phy_regs[3]);
24581da177e4SLinus Torvalds }
24591da177e4SLinus Torvalds #endif /* 0 - Dump 25.6 Mbps PHY registers */
24601da177e4SLinus Torvalds #if 0
24611da177e4SLinus Torvalds /* Dump TST */
2462098fde11Schas williams - CONTRACTOR if (left-- < NS_TST_NUM_ENTRIES) {
24631da177e4SLinus Torvalds if (card->tste2vc[left + 1] == NULL)
24641da177e4SLinus Torvalds return sprintf(page, "%5d - VBR/UBR \n", left + 1);
24651da177e4SLinus Torvalds else
24661da177e4SLinus Torvalds return sprintf(page, "%5d - %d %d \n", left + 1,
24671da177e4SLinus Torvalds card->tste2vc[left + 1]->tx_vcc->vpi,
24681da177e4SLinus Torvalds card->tste2vc[left + 1]->tx_vcc->vci);
24691da177e4SLinus Torvalds }
24701da177e4SLinus Torvalds #endif /* 0 */
24711da177e4SLinus Torvalds return 0;
24721da177e4SLinus Torvalds }
24731da177e4SLinus Torvalds
ns_ioctl(struct atm_dev * dev,unsigned int cmd,void __user * arg)24741da177e4SLinus Torvalds static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg)
24751da177e4SLinus Torvalds {
24761da177e4SLinus Torvalds ns_dev *card;
24771da177e4SLinus Torvalds pool_levels pl;
247869c30147SAlan Cox long btype;
24791da177e4SLinus Torvalds unsigned long flags;
24801da177e4SLinus Torvalds
24811da177e4SLinus Torvalds card = dev->dev_data;
2482098fde11Schas williams - CONTRACTOR switch (cmd) {
24831da177e4SLinus Torvalds case NS_GETPSTAT:
2484098fde11Schas williams - CONTRACTOR if (get_user
2485098fde11Schas williams - CONTRACTOR (pl.buftype, &((pool_levels __user *) arg)->buftype))
24861da177e4SLinus Torvalds return -EFAULT;
2487098fde11Schas williams - CONTRACTOR switch (pl.buftype) {
24881da177e4SLinus Torvalds case NS_BUFTYPE_SMALL:
2489098fde11Schas williams - CONTRACTOR pl.count =
2490098fde11Schas williams - CONTRACTOR ns_stat_sfbqc_get(readl(card->membase + STAT));
24911da177e4SLinus Torvalds pl.level.min = card->sbnr.min;
24921da177e4SLinus Torvalds pl.level.init = card->sbnr.init;
24931da177e4SLinus Torvalds pl.level.max = card->sbnr.max;
24941da177e4SLinus Torvalds break;
24951da177e4SLinus Torvalds
24961da177e4SLinus Torvalds case NS_BUFTYPE_LARGE:
2497098fde11Schas williams - CONTRACTOR pl.count =
2498098fde11Schas williams - CONTRACTOR ns_stat_lfbqc_get(readl(card->membase + STAT));
24991da177e4SLinus Torvalds pl.level.min = card->lbnr.min;
25001da177e4SLinus Torvalds pl.level.init = card->lbnr.init;
25011da177e4SLinus Torvalds pl.level.max = card->lbnr.max;
25021da177e4SLinus Torvalds break;
25031da177e4SLinus Torvalds
25041da177e4SLinus Torvalds case NS_BUFTYPE_HUGE:
25051da177e4SLinus Torvalds pl.count = card->hbpool.count;
25061da177e4SLinus Torvalds pl.level.min = card->hbnr.min;
25071da177e4SLinus Torvalds pl.level.init = card->hbnr.init;
25081da177e4SLinus Torvalds pl.level.max = card->hbnr.max;
25091da177e4SLinus Torvalds break;
25101da177e4SLinus Torvalds
25111da177e4SLinus Torvalds case NS_BUFTYPE_IOVEC:
25121da177e4SLinus Torvalds pl.count = card->iovpool.count;
25131da177e4SLinus Torvalds pl.level.min = card->iovnr.min;
25141da177e4SLinus Torvalds pl.level.init = card->iovnr.init;
25151da177e4SLinus Torvalds pl.level.max = card->iovnr.max;
25161da177e4SLinus Torvalds break;
25171da177e4SLinus Torvalds
25181da177e4SLinus Torvalds default:
25191da177e4SLinus Torvalds return -ENOIOCTLCMD;
25201da177e4SLinus Torvalds
25211da177e4SLinus Torvalds }
25221da177e4SLinus Torvalds if (!copy_to_user((pool_levels __user *) arg, &pl, sizeof(pl)))
25231da177e4SLinus Torvalds return (sizeof(pl));
25241da177e4SLinus Torvalds else
25251da177e4SLinus Torvalds return -EFAULT;
25261da177e4SLinus Torvalds
25271da177e4SLinus Torvalds case NS_SETBUFLEV:
25281da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN))
25291da177e4SLinus Torvalds return -EPERM;
25301da177e4SLinus Torvalds if (copy_from_user(&pl, (pool_levels __user *) arg, sizeof(pl)))
25311da177e4SLinus Torvalds return -EFAULT;
2532098fde11Schas williams - CONTRACTOR if (pl.level.min >= pl.level.init
2533098fde11Schas williams - CONTRACTOR || pl.level.init >= pl.level.max)
25341da177e4SLinus Torvalds return -EINVAL;
25351da177e4SLinus Torvalds if (pl.level.min == 0)
25361da177e4SLinus Torvalds return -EINVAL;
2537098fde11Schas williams - CONTRACTOR switch (pl.buftype) {
25381da177e4SLinus Torvalds case NS_BUFTYPE_SMALL:
25391da177e4SLinus Torvalds if (pl.level.max > TOP_SB)
25401da177e4SLinus Torvalds return -EINVAL;
25411da177e4SLinus Torvalds card->sbnr.min = pl.level.min;
25421da177e4SLinus Torvalds card->sbnr.init = pl.level.init;
25431da177e4SLinus Torvalds card->sbnr.max = pl.level.max;
25441da177e4SLinus Torvalds break;
25451da177e4SLinus Torvalds
25461da177e4SLinus Torvalds case NS_BUFTYPE_LARGE:
25471da177e4SLinus Torvalds if (pl.level.max > TOP_LB)
25481da177e4SLinus Torvalds return -EINVAL;
25491da177e4SLinus Torvalds card->lbnr.min = pl.level.min;
25501da177e4SLinus Torvalds card->lbnr.init = pl.level.init;
25511da177e4SLinus Torvalds card->lbnr.max = pl.level.max;
25521da177e4SLinus Torvalds break;
25531da177e4SLinus Torvalds
25541da177e4SLinus Torvalds case NS_BUFTYPE_HUGE:
25551da177e4SLinus Torvalds if (pl.level.max > TOP_HB)
25561da177e4SLinus Torvalds return -EINVAL;
25571da177e4SLinus Torvalds card->hbnr.min = pl.level.min;
25581da177e4SLinus Torvalds card->hbnr.init = pl.level.init;
25591da177e4SLinus Torvalds card->hbnr.max = pl.level.max;
25601da177e4SLinus Torvalds break;
25611da177e4SLinus Torvalds
25621da177e4SLinus Torvalds case NS_BUFTYPE_IOVEC:
25631da177e4SLinus Torvalds if (pl.level.max > TOP_IOVB)
25641da177e4SLinus Torvalds return -EINVAL;
25651da177e4SLinus Torvalds card->iovnr.min = pl.level.min;
25661da177e4SLinus Torvalds card->iovnr.init = pl.level.init;
25671da177e4SLinus Torvalds card->iovnr.max = pl.level.max;
25681da177e4SLinus Torvalds break;
25691da177e4SLinus Torvalds
25701da177e4SLinus Torvalds default:
25711da177e4SLinus Torvalds return -EINVAL;
25721da177e4SLinus Torvalds
25731da177e4SLinus Torvalds }
25741da177e4SLinus Torvalds return 0;
25751da177e4SLinus Torvalds
25761da177e4SLinus Torvalds case NS_ADJBUFLEV:
25771da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN))
25781da177e4SLinus Torvalds return -EPERM;
257969c30147SAlan Cox btype = (long)arg; /* a long is the same size as a pointer or bigger */
2580098fde11Schas williams - CONTRACTOR switch (btype) {
25811da177e4SLinus Torvalds case NS_BUFTYPE_SMALL:
2582098fde11Schas williams - CONTRACTOR while (card->sbfqc < card->sbnr.init) {
25831da177e4SLinus Torvalds struct sk_buff *sb;
25841da177e4SLinus Torvalds
25851da177e4SLinus Torvalds sb = __dev_alloc_skb(NS_SMSKBSIZE, GFP_KERNEL);
25861da177e4SLinus Torvalds if (sb == NULL)
25871da177e4SLinus Torvalds return -ENOMEM;
2588864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(sb) = BUF_SM;
25891da177e4SLinus Torvalds skb_queue_tail(&card->sbpool.queue, sb);
25901da177e4SLinus Torvalds skb_reserve(sb, NS_AAL0_HEADER);
25918728b834SDavid S. Miller push_rxbufs(card, sb);
25921da177e4SLinus Torvalds }
25931da177e4SLinus Torvalds break;
25941da177e4SLinus Torvalds
25951da177e4SLinus Torvalds case NS_BUFTYPE_LARGE:
2596098fde11Schas williams - CONTRACTOR while (card->lbfqc < card->lbnr.init) {
25971da177e4SLinus Torvalds struct sk_buff *lb;
25981da177e4SLinus Torvalds
25991da177e4SLinus Torvalds lb = __dev_alloc_skb(NS_LGSKBSIZE, GFP_KERNEL);
26001da177e4SLinus Torvalds if (lb == NULL)
26011da177e4SLinus Torvalds return -ENOMEM;
2602864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(lb) = BUF_LG;
26031da177e4SLinus Torvalds skb_queue_tail(&card->lbpool.queue, lb);
26041da177e4SLinus Torvalds skb_reserve(lb, NS_SMBUFSIZE);
26058728b834SDavid S. Miller push_rxbufs(card, lb);
26061da177e4SLinus Torvalds }
26071da177e4SLinus Torvalds break;
26081da177e4SLinus Torvalds
26091da177e4SLinus Torvalds case NS_BUFTYPE_HUGE:
2610098fde11Schas williams - CONTRACTOR while (card->hbpool.count > card->hbnr.init) {
26111da177e4SLinus Torvalds struct sk_buff *hb;
26121da177e4SLinus Torvalds
261336ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags);
26141da177e4SLinus Torvalds hb = skb_dequeue(&card->hbpool.queue);
26151da177e4SLinus Torvalds card->hbpool.count--;
26161da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags);
26171da177e4SLinus Torvalds if (hb == NULL)
2618098fde11Schas williams - CONTRACTOR printk
2619098fde11Schas williams - CONTRACTOR ("nicstar%d: huge buffer count inconsistent.\n",
26201da177e4SLinus Torvalds card->index);
26211da177e4SLinus Torvalds else
26221da177e4SLinus Torvalds dev_kfree_skb_any(hb);
26231da177e4SLinus Torvalds
26241da177e4SLinus Torvalds }
2625098fde11Schas williams - CONTRACTOR while (card->hbpool.count < card->hbnr.init) {
26261da177e4SLinus Torvalds struct sk_buff *hb;
26271da177e4SLinus Torvalds
26281da177e4SLinus Torvalds hb = __dev_alloc_skb(NS_HBUFSIZE, GFP_KERNEL);
26291da177e4SLinus Torvalds if (hb == NULL)
26301da177e4SLinus Torvalds return -ENOMEM;
2631864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(hb) = BUF_NONE;
263236ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags);
26331da177e4SLinus Torvalds skb_queue_tail(&card->hbpool.queue, hb);
26341da177e4SLinus Torvalds card->hbpool.count++;
26351da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags);
26361da177e4SLinus Torvalds }
26371da177e4SLinus Torvalds break;
26381da177e4SLinus Torvalds
26391da177e4SLinus Torvalds case NS_BUFTYPE_IOVEC:
2640098fde11Schas williams - CONTRACTOR while (card->iovpool.count > card->iovnr.init) {
26411da177e4SLinus Torvalds struct sk_buff *iovb;
26421da177e4SLinus Torvalds
264336ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags);
26441da177e4SLinus Torvalds iovb = skb_dequeue(&card->iovpool.queue);
26451da177e4SLinus Torvalds card->iovpool.count--;
26461da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags);
26471da177e4SLinus Torvalds if (iovb == NULL)
2648098fde11Schas williams - CONTRACTOR printk
2649098fde11Schas williams - CONTRACTOR ("nicstar%d: iovec buffer count inconsistent.\n",
26501da177e4SLinus Torvalds card->index);
26511da177e4SLinus Torvalds else
26521da177e4SLinus Torvalds dev_kfree_skb_any(iovb);
26531da177e4SLinus Torvalds
26541da177e4SLinus Torvalds }
2655098fde11Schas williams - CONTRACTOR while (card->iovpool.count < card->iovnr.init) {
26561da177e4SLinus Torvalds struct sk_buff *iovb;
26571da177e4SLinus Torvalds
26581da177e4SLinus Torvalds iovb = alloc_skb(NS_IOVBUFSIZE, GFP_KERNEL);
26591da177e4SLinus Torvalds if (iovb == NULL)
26601da177e4SLinus Torvalds return -ENOMEM;
2661864a3ff6Schas williams - CONTRACTOR NS_PRV_BUFTYPE(iovb) = BUF_NONE;
266236ef4080SMark Asselstine spin_lock_irqsave(&card->int_lock, flags);
26631da177e4SLinus Torvalds skb_queue_tail(&card->iovpool.queue, iovb);
26641da177e4SLinus Torvalds card->iovpool.count++;
26651da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags);
26661da177e4SLinus Torvalds }
26671da177e4SLinus Torvalds break;
26681da177e4SLinus Torvalds
26691da177e4SLinus Torvalds default:
26701da177e4SLinus Torvalds return -EINVAL;
26711da177e4SLinus Torvalds
26721da177e4SLinus Torvalds }
26731da177e4SLinus Torvalds return 0;
26741da177e4SLinus Torvalds
26751da177e4SLinus Torvalds default:
26761da177e4SLinus Torvalds if (dev->phy && dev->phy->ioctl) {
26771da177e4SLinus Torvalds return dev->phy->ioctl(dev, cmd, arg);
2678098fde11Schas williams - CONTRACTOR } else {
26791da177e4SLinus Torvalds printk("nicstar%d: %s == NULL \n", card->index,
26801da177e4SLinus Torvalds dev->phy ? "dev->phy->ioctl" : "dev->phy");
26811da177e4SLinus Torvalds return -ENOIOCTLCMD;
26821da177e4SLinus Torvalds }
26831da177e4SLinus Torvalds }
26841da177e4SLinus Torvalds }
26851da177e4SLinus Torvalds
2686864a3ff6Schas williams - CONTRACTOR #ifdef EXTRA_DEBUG
which_list(ns_dev * card,struct sk_buff * skb)26871da177e4SLinus Torvalds static void which_list(ns_dev * card, struct sk_buff *skb)
26881da177e4SLinus Torvalds {
2689864a3ff6Schas williams - CONTRACTOR printk("skb buf_type: 0x%08x\n", NS_PRV_BUFTYPE(skb));
26901da177e4SLinus Torvalds }
2691864a3ff6Schas williams - CONTRACTOR #endif /* EXTRA_DEBUG */
26921da177e4SLinus Torvalds
ns_poll(struct timer_list * unused)2693e99e88a9SKees Cook static void ns_poll(struct timer_list *unused)
26941da177e4SLinus Torvalds {
26951da177e4SLinus Torvalds int i;
26961da177e4SLinus Torvalds ns_dev *card;
26971da177e4SLinus Torvalds unsigned long flags;
26981da177e4SLinus Torvalds u32 stat_r, stat_w;
26991da177e4SLinus Torvalds
27001da177e4SLinus Torvalds PRINTK("nicstar: Entering ns_poll().\n");
2701098fde11Schas williams - CONTRACTOR for (i = 0; i < num_cards; i++) {
27021da177e4SLinus Torvalds card = cards[i];
27039a694c1dSLance Roy if (!spin_trylock_irqsave(&card->int_lock, flags)) {
27041da177e4SLinus Torvalds /* Probably it isn't worth spinning */
27051da177e4SLinus Torvalds continue;
27061da177e4SLinus Torvalds }
27071da177e4SLinus Torvalds
27081da177e4SLinus Torvalds stat_w = 0;
27091da177e4SLinus Torvalds stat_r = readl(card->membase + STAT);
27101da177e4SLinus Torvalds if (stat_r & NS_STAT_TSIF)
27111da177e4SLinus Torvalds stat_w |= NS_STAT_TSIF;
27121da177e4SLinus Torvalds if (stat_r & NS_STAT_EOPDU)
27131da177e4SLinus Torvalds stat_w |= NS_STAT_EOPDU;
27141da177e4SLinus Torvalds
27151da177e4SLinus Torvalds process_tsq(card);
27161da177e4SLinus Torvalds process_rsq(card);
27171da177e4SLinus Torvalds
27181da177e4SLinus Torvalds writel(stat_w, card->membase + STAT);
27191da177e4SLinus Torvalds spin_unlock_irqrestore(&card->int_lock, flags);
27201da177e4SLinus Torvalds }
27211da177e4SLinus Torvalds mod_timer(&ns_timer, jiffies + NS_POLL_PERIOD);
27221da177e4SLinus Torvalds PRINTK("nicstar: Leaving ns_poll().\n");
27231da177e4SLinus Torvalds }
27241da177e4SLinus Torvalds
ns_phy_put(struct atm_dev * dev,unsigned char value,unsigned long addr)27251da177e4SLinus Torvalds static void ns_phy_put(struct atm_dev *dev, unsigned char value,
27261da177e4SLinus Torvalds unsigned long addr)
27271da177e4SLinus Torvalds {
27281da177e4SLinus Torvalds ns_dev *card;
27291da177e4SLinus Torvalds unsigned long flags;
27301da177e4SLinus Torvalds
27311da177e4SLinus Torvalds card = dev->dev_data;
273236ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags);
27331da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
2734864a3ff6Schas williams - CONTRACTOR writel((u32) value, card->membase + DR0);
27351da177e4SLinus Torvalds writel(NS_CMD_WRITE_UTILITY | 0x00000200 | (addr & 0x000000FF),
27361da177e4SLinus Torvalds card->membase + CMD);
27371da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags);
27381da177e4SLinus Torvalds }
27391da177e4SLinus Torvalds
ns_phy_get(struct atm_dev * dev,unsigned long addr)27401da177e4SLinus Torvalds static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr)
27411da177e4SLinus Torvalds {
27421da177e4SLinus Torvalds ns_dev *card;
27431da177e4SLinus Torvalds unsigned long flags;
2744864a3ff6Schas williams - CONTRACTOR u32 data;
27451da177e4SLinus Torvalds
27461da177e4SLinus Torvalds card = dev->dev_data;
274736ef4080SMark Asselstine spin_lock_irqsave(&card->res_lock, flags);
27481da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
27491da177e4SLinus Torvalds writel(NS_CMD_READ_UTILITY | 0x00000200 | (addr & 0x000000FF),
27501da177e4SLinus Torvalds card->membase + CMD);
27511da177e4SLinus Torvalds while (CMD_BUSY(card)) ;
27521da177e4SLinus Torvalds data = readl(card->membase + DR0) & 0x000000FF;
27531da177e4SLinus Torvalds spin_unlock_irqrestore(&card->res_lock, flags);
27541da177e4SLinus Torvalds return (unsigned char)data;
27551da177e4SLinus Torvalds }
27561da177e4SLinus Torvalds
27571da177e4SLinus Torvalds module_init(nicstar_init);
27581da177e4SLinus Torvalds module_exit(nicstar_cleanup);
2759