// SPDX-License-Identifier: GPL-2.0-only /* * nicstar.c * * Device driver supporting CBR for IDT 77201/77211 "NICStAR" based cards. * * IMPORTANT: The included file nicstarmac.c was NOT WRITTEN BY ME. * It was taken from the frle-0.22 device driver. * As the file doesn't have a copyright notice, in the file * nicstarmac.copyright I put the copyright notice from the * frle-0.22 device driver. * Some code is based on the nicstar driver by M. Welsh. * * Author: Rui Prior ([email protected]) * PowerPC support by Jay Talbott ([email protected]) April 1999 * * * (C) INESC 1999 */ /* * IMPORTANT INFORMATION * * There are currently three types of spinlocks: * * 1 - Per card interrupt spinlock (to protect structures and such) * 2 - Per SCQ scq spinlock * 3 - Per card resource spinlock (to access registers, etc.) * * These must NEVER be grabbed in reverse order. * */ /* Header files */ #include <linux/module.h> #include <linux/kernel.h> #include <linux/skbuff.h> #include <linux/atmdev.h> #include <linux/atm.h> #include <linux/pci.h> #include <linux/dma-mapping.h> #include <linux/types.h> #include <linux/string.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/sched.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/bitops.h> #include <linux/slab.h> #include <linux/idr.h> #include <asm/io.h> #include <linux/uaccess.h> #include <linux/atomic.h> #include <linux/etherdevice.h> #include "nicstar.h" #ifdef CONFIG_ATM_NICSTAR_USE_SUNI #include "suni.h" #endif /* CONFIG_ATM_NICSTAR_USE_SUNI */ #ifdef CONFIG_ATM_NICSTAR_USE_IDT77105 #include "idt77105.h" #endif /* CONFIG_ATM_NICSTAR_USE_IDT77105 */ /* Additional code */ #include "nicstarmac.c" /* Configurable parameters */ #undef PHY_LOOPBACK #undef TX_DEBUG #undef RX_DEBUG #undef GENERAL_DEBUG #undef EXTRA_DEBUG /* Do not touch these */ #ifdef TX_DEBUG #define TXPRINTK … #else #define TXPRINTK(args...) … #endif /* TX_DEBUG */ #ifdef RX_DEBUG #define RXPRINTK … #else #define RXPRINTK(args...) … #endif /* RX_DEBUG */ #ifdef GENERAL_DEBUG #define PRINTK … #else #define PRINTK(args...) … #endif /* GENERAL_DEBUG */ #ifdef EXTRA_DEBUG #define XPRINTK … #else #define XPRINTK(args...) … #endif /* EXTRA_DEBUG */ /* Macros */ #define CMD_BUSY(card) … #define NS_DELAY … #define PTR_DIFF(a, b) … #ifndef ATM_SKB #define ATM_SKB … #endif #define scq_virt_to_bus(scq, p) … /* Function declarations */ static u32 ns_read_sram(ns_dev * card, u32 sram_address); static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value, int count); static int ns_init_card(int i, struct pci_dev *pcidev); static void ns_init_card_error(ns_dev * card, int error); static scq_info *get_scq(ns_dev *card, int size, u32 scd); static void free_scq(ns_dev *card, scq_info * scq, struct atm_vcc *vcc); static void push_rxbufs(ns_dev *, struct sk_buff *); static irqreturn_t ns_irq_handler(int irq, void *dev_id); static int ns_open(struct atm_vcc *vcc); static void ns_close(struct atm_vcc *vcc); static void fill_tst(ns_dev * card, int n, vc_map * vc); static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb); static int ns_send_bh(struct atm_vcc *vcc, struct sk_buff *skb); static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd, struct sk_buff *skb, bool may_sleep); static void process_tsq(ns_dev * card); static void drain_scq(ns_dev * card, scq_info * scq, int pos); static void process_rsq(ns_dev * card); static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe); static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb); static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count); static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb); static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb); static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb); static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page); static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg); #ifdef EXTRA_DEBUG static void which_list(ns_dev * card, struct sk_buff *skb); #endif static void ns_poll(struct timer_list *unused); static void ns_phy_put(struct atm_dev *dev, unsigned char value, unsigned long addr); static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr); /* Global variables */ static struct ns_dev *cards[NS_MAX_CARDS]; static unsigned num_cards; static const struct atmdev_ops atm_ops = …; static struct timer_list ns_timer; static char *mac[NS_MAX_CARDS]; module_param_array(…); MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; /* Functions */ static int nicstar_init_one(struct pci_dev *pcidev, const struct pci_device_id *ent) { … } static void nicstar_remove_one(struct pci_dev *pcidev) { … } static const struct pci_device_id nicstar_pci_tbl[] = …; MODULE_DEVICE_TABLE(pci, nicstar_pci_tbl); static struct pci_driver nicstar_driver = …; static int __init nicstar_init(void) { … } static void __exit nicstar_cleanup(void) { … } static u32 ns_read_sram(ns_dev * card, u32 sram_address) { … } static void ns_write_sram(ns_dev * card, u32 sram_address, u32 * value, int count) { … } static int ns_init_card(int i, struct pci_dev *pcidev) { … } static void ns_init_card_error(ns_dev *card, int error) { … } static scq_info *get_scq(ns_dev *card, int size, u32 scd) { … } /* For variable rate SCQ vcc must be NULL */ static void free_scq(ns_dev *card, scq_info *scq, struct atm_vcc *vcc) { … } /* The handles passed must be pointers to the sk_buff containing the small or large buffer(s) cast to u32. */ static void push_rxbufs(ns_dev * card, struct sk_buff *skb) { … } static irqreturn_t ns_irq_handler(int irq, void *dev_id) { … } static int ns_open(struct atm_vcc *vcc) { … } static void ns_close(struct atm_vcc *vcc) { … } static void fill_tst(ns_dev * card, int n, vc_map * vc) { … } static int _ns_send(struct atm_vcc *vcc, struct sk_buff *skb, bool may_sleep) { … } static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb) { … } static int ns_send_bh(struct atm_vcc *vcc, struct sk_buff *skb) { … } static int push_scqe(ns_dev * card, vc_map * vc, scq_info * scq, ns_scqe * tbd, struct sk_buff *skb, bool may_sleep) { … } static void process_tsq(ns_dev * card) { … } static void drain_scq(ns_dev * card, scq_info * scq, int pos) { … } static void process_rsq(ns_dev * card) { … } static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe) { … } static void recycle_rx_buf(ns_dev * card, struct sk_buff *skb) { … } static void recycle_iovec_rx_bufs(ns_dev * card, struct iovec *iov, int count) { … } static void recycle_iov_buf(ns_dev * card, struct sk_buff *iovb) { … } static void dequeue_sm_buf(ns_dev * card, struct sk_buff *sb) { … } static void dequeue_lg_buf(ns_dev * card, struct sk_buff *lb) { … } static int ns_proc_read(struct atm_dev *dev, loff_t * pos, char *page) { … } static int ns_ioctl(struct atm_dev *dev, unsigned int cmd, void __user * arg) { … } #ifdef EXTRA_DEBUG static void which_list(ns_dev * card, struct sk_buff *skb) { printk("skb buf_type: 0x%08x\n", NS_PRV_BUFTYPE(skb)); } #endif /* EXTRA_DEBUG */ static void ns_poll(struct timer_list *unused) { … } static void ns_phy_put(struct atm_dev *dev, unsigned char value, unsigned long addr) { … } static unsigned char ns_phy_get(struct atm_dev *dev, unsigned long addr) { … } module_init(…) …; module_exit(nicstar_cleanup);
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