/******************************************************************* * * Copyright (c) 2000 ATecoM GmbH * * The author may be reached at [email protected]. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 675 Mass Ave, Cambridge, MA 02139, USA. * *******************************************************************/ #include <linux/module.h> #include <linux/pci.h> #include <linux/poison.h> #include <linux/skbuff.h> #include <linux/kernel.h> #include <linux/vmalloc.h> #include <linux/netdevice.h> #include <linux/atmdev.h> #include <linux/atm.h> #include <linux/delay.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/bitops.h> #include <linux/wait.h> #include <linux/jiffies.h> #include <linux/mutex.h> #include <linux/slab.h> #include <asm/io.h> #include <linux/uaccess.h> #include <linux/atomic.h> #include <asm/byteorder.h> #ifdef CONFIG_ATM_IDT77252_USE_SUNI #include "suni.h" #endif /* CONFIG_ATM_IDT77252_USE_SUNI */ #include "idt77252.h" #include "idt77252_tables.h" static unsigned int vpibits = …; #define ATM_IDT77252_SEND_IDLE … /* * Debug HACKs. */ #define DEBUG_MODULE … #undef HAVE_EEPROM /* does not work, yet. */ #ifdef CONFIG_ATM_IDT77252_DEBUG static unsigned long debug = …; #endif #define SAR_RX_DELAY … /* * SCQ Handling. */ static struct scq_info *alloc_scq(struct idt77252_dev *, int); static void free_scq(struct idt77252_dev *, struct scq_info *); static int queue_skb(struct idt77252_dev *, struct vc_map *, struct sk_buff *, int oam); static void drain_scq(struct idt77252_dev *, struct vc_map *); static unsigned long get_free_scd(struct idt77252_dev *, struct vc_map *); static void fill_scd(struct idt77252_dev *, struct scq_info *, int); /* * FBQ Handling. */ static int push_rx_skb(struct idt77252_dev *, struct sk_buff *, int queue); static void recycle_rx_skb(struct idt77252_dev *, struct sk_buff *); static void flush_rx_pool(struct idt77252_dev *, struct rx_pool *); static void recycle_rx_pool_skb(struct idt77252_dev *, struct rx_pool *); static void add_rx_skb(struct idt77252_dev *, int queue, unsigned int size, unsigned int count); /* * RSQ Handling. */ static int init_rsq(struct idt77252_dev *); static void deinit_rsq(struct idt77252_dev *); static void idt77252_rx(struct idt77252_dev *); /* * TSQ handling. */ static int init_tsq(struct idt77252_dev *); static void deinit_tsq(struct idt77252_dev *); static void idt77252_tx(struct idt77252_dev *); /* * ATM Interface. */ static void idt77252_dev_close(struct atm_dev *dev); static int idt77252_open(struct atm_vcc *vcc); static void idt77252_close(struct atm_vcc *vcc); static int idt77252_send(struct atm_vcc *vcc, struct sk_buff *skb); static int idt77252_send_oam(struct atm_vcc *vcc, void *cell, int flags); static void idt77252_phy_put(struct atm_dev *dev, unsigned char value, unsigned long addr); static unsigned char idt77252_phy_get(struct atm_dev *dev, unsigned long addr); static int idt77252_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags); static int idt77252_proc_read(struct atm_dev *dev, loff_t * pos, char *page); static void idt77252_softint(struct work_struct *work); static const struct atmdev_ops idt77252_ops = …; static struct idt77252_dev *idt77252_chain = …; static unsigned int idt77252_sram_write_errors = …; /*****************************************************************************/ /* */ /* I/O and Utility Bus */ /* */ /*****************************************************************************/ static void waitfor_idle(struct idt77252_dev *card) { … } static u32 read_sram(struct idt77252_dev *card, unsigned long addr) { … } static void write_sram(struct idt77252_dev *card, unsigned long addr, u32 value) { … } static u8 read_utility(void *dev, unsigned long ubus_addr) { … } static void write_utility(void *dev, unsigned long ubus_addr, u8 value) { … } #ifdef HAVE_EEPROM static u32 rdsrtab[] = { SAR_GP_EECS | SAR_GP_EESCLK, 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ SAR_GP_EEDO, SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */ 0, SAR_GP_EESCLK, /* 0 */ SAR_GP_EEDO, SAR_GP_EESCLK | SAR_GP_EEDO /* 1 */ }; static u32 wrentab[] = { SAR_GP_EECS | SAR_GP_EESCLK, 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ SAR_GP_EEDO, SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */ SAR_GP_EEDO, SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK /* 0 */ }; static u32 rdtab[] = { SAR_GP_EECS | SAR_GP_EESCLK, 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ SAR_GP_EEDO, SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */ SAR_GP_EEDO, SAR_GP_EESCLK | SAR_GP_EEDO /* 1 */ }; static u32 wrtab[] = { SAR_GP_EECS | SAR_GP_EESCLK, 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ 0, SAR_GP_EESCLK, /* 0 */ SAR_GP_EEDO, SAR_GP_EESCLK | SAR_GP_EEDO, /* 1 */ 0, SAR_GP_EESCLK /* 0 */ }; static u32 clktab[] = { 0, SAR_GP_EESCLK, 0, SAR_GP_EESCLK, 0, SAR_GP_EESCLK, 0, SAR_GP_EESCLK, 0, SAR_GP_EESCLK, 0, SAR_GP_EESCLK, 0, SAR_GP_EESCLK, 0, SAR_GP_EESCLK, 0 }; static u32 idt77252_read_gp(struct idt77252_dev *card) { u32 gp; gp = readl(SAR_REG_GP); #if 0 printk("RD: %s\n", gp & SAR_GP_EEDI ? "1" : "0"); #endif return gp; } static void idt77252_write_gp(struct idt77252_dev *card, u32 value) { unsigned long flags; #if 0 printk("WR: %s %s %s\n", value & SAR_GP_EECS ? " " : "/CS", value & SAR_GP_EESCLK ? "HIGH" : "LOW ", value & SAR_GP_EEDO ? "1" : "0"); #endif spin_lock_irqsave(&card->cmd_lock, flags); waitfor_idle(card); writel(value, SAR_REG_GP); spin_unlock_irqrestore(&card->cmd_lock, flags); } static u8 idt77252_eeprom_read_status(struct idt77252_dev *card) { u8 byte; u32 gp; int i, j; gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO); for (i = 0; i < ARRAY_SIZE(rdsrtab); i++) { idt77252_write_gp(card, gp | rdsrtab[i]); udelay(5); } idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); byte = 0; for (i = 0, j = 0; i < 8; i++) { byte <<= 1; idt77252_write_gp(card, gp | clktab[j++]); udelay(5); byte |= idt77252_read_gp(card) & SAR_GP_EEDI ? 1 : 0; idt77252_write_gp(card, gp | clktab[j++]); udelay(5); } idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); return byte; } static u8 idt77252_eeprom_read_byte(struct idt77252_dev *card, u8 offset) { u8 byte; u32 gp; int i, j; gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO); for (i = 0; i < ARRAY_SIZE(rdtab); i++) { idt77252_write_gp(card, gp | rdtab[i]); udelay(5); } idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); for (i = 0, j = 0; i < 8; i++) { idt77252_write_gp(card, gp | clktab[j++] | (offset & 1 ? SAR_GP_EEDO : 0)); udelay(5); idt77252_write_gp(card, gp | clktab[j++] | (offset & 1 ? SAR_GP_EEDO : 0)); udelay(5); offset >>= 1; } idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); byte = 0; for (i = 0, j = 0; i < 8; i++) { byte <<= 1; idt77252_write_gp(card, gp | clktab[j++]); udelay(5); byte |= idt77252_read_gp(card) & SAR_GP_EEDI ? 1 : 0; idt77252_write_gp(card, gp | clktab[j++]); udelay(5); } idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); return byte; } static void idt77252_eeprom_write_byte(struct idt77252_dev *card, u8 offset, u8 data) { u32 gp; int i, j; gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO); for (i = 0; i < ARRAY_SIZE(wrentab); i++) { idt77252_write_gp(card, gp | wrentab[i]); udelay(5); } idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); for (i = 0; i < ARRAY_SIZE(wrtab); i++) { idt77252_write_gp(card, gp | wrtab[i]); udelay(5); } idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); for (i = 0, j = 0; i < 8; i++) { idt77252_write_gp(card, gp | clktab[j++] | (offset & 1 ? SAR_GP_EEDO : 0)); udelay(5); idt77252_write_gp(card, gp | clktab[j++] | (offset & 1 ? SAR_GP_EEDO : 0)); udelay(5); offset >>= 1; } idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); for (i = 0, j = 0; i < 8; i++) { idt77252_write_gp(card, gp | clktab[j++] | (data & 1 ? SAR_GP_EEDO : 0)); udelay(5); idt77252_write_gp(card, gp | clktab[j++] | (data & 1 ? SAR_GP_EEDO : 0)); udelay(5); data >>= 1; } idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); } static void idt77252_eeprom_init(struct idt77252_dev *card) { u32 gp; gp = idt77252_read_gp(card) & ~(SAR_GP_EESCLK|SAR_GP_EECS|SAR_GP_EEDO); idt77252_write_gp(card, gp | SAR_GP_EECS | SAR_GP_EESCLK); udelay(5); idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); idt77252_write_gp(card, gp | SAR_GP_EECS | SAR_GP_EESCLK); udelay(5); idt77252_write_gp(card, gp | SAR_GP_EECS); udelay(5); } #endif /* HAVE_EEPROM */ #ifdef CONFIG_ATM_IDT77252_DEBUG static void dump_tct(struct idt77252_dev *card, int index) { … } static void idt77252_tx_dump(struct idt77252_dev *card) { … } #endif /*****************************************************************************/ /* */ /* SCQ Handling */ /* */ /*****************************************************************************/ static int sb_pool_add(struct idt77252_dev *card, struct sk_buff *skb, int queue) { … } static void sb_pool_remove(struct idt77252_dev *card, struct sk_buff *skb) { … } static struct sk_buff * sb_pool_skb(struct idt77252_dev *card, u32 handle) { … } static struct scq_info * alloc_scq(struct idt77252_dev *card, int class) { … } static void free_scq(struct idt77252_dev *card, struct scq_info *scq) { … } static int push_on_scq(struct idt77252_dev *card, struct vc_map *vc, struct sk_buff *skb) { … } static void drain_scq(struct idt77252_dev *card, struct vc_map *vc) { … } static int queue_skb(struct idt77252_dev *card, struct vc_map *vc, struct sk_buff *skb, int oam) { … } static unsigned long get_free_scd(struct idt77252_dev *card, struct vc_map *vc) { … } static void fill_scd(struct idt77252_dev *card, struct scq_info *scq, int class) { … } static void clear_scd(struct idt77252_dev *card, struct scq_info *scq, int class) { … } /*****************************************************************************/ /* */ /* RSQ Handling */ /* */ /*****************************************************************************/ static int init_rsq(struct idt77252_dev *card) { … } static void deinit_rsq(struct idt77252_dev *card) { … } static void dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe) { … } static void idt77252_rx(struct idt77252_dev *card) { … } static void idt77252_rx_raw(struct idt77252_dev *card) { … } /*****************************************************************************/ /* */ /* TSQ Handling */ /* */ /*****************************************************************************/ static int init_tsq(struct idt77252_dev *card) { … } static void deinit_tsq(struct idt77252_dev *card) { … } static void idt77252_tx(struct idt77252_dev *card) { … } static void tst_timer(struct timer_list *t) { … } static int __fill_tst(struct idt77252_dev *card, struct vc_map *vc, int n, unsigned int opc) { … } static int fill_tst(struct idt77252_dev *card, struct vc_map *vc, int n, unsigned int opc) { … } static int __clear_tst(struct idt77252_dev *card, struct vc_map *vc) { … } static int clear_tst(struct idt77252_dev *card, struct vc_map *vc) { … } static int change_tst(struct idt77252_dev *card, struct vc_map *vc, int n, unsigned int opc) { … } static int set_tct(struct idt77252_dev *card, struct vc_map *vc) { … } /*****************************************************************************/ /* */ /* FBQ Handling */ /* */ /*****************************************************************************/ static __inline__ int idt77252_fbq_full(struct idt77252_dev *card, int queue) { … } static int push_rx_skb(struct idt77252_dev *card, struct sk_buff *skb, int queue) { … } static void add_rx_skb(struct idt77252_dev *card, int queue, unsigned int size, unsigned int count) { … } static void recycle_rx_skb(struct idt77252_dev *card, struct sk_buff *skb) { … } static void flush_rx_pool(struct idt77252_dev *card, struct rx_pool *rpp) { … } static void recycle_rx_pool_skb(struct idt77252_dev *card, struct rx_pool *rpp) { … } /*****************************************************************************/ /* */ /* ATM Interface */ /* */ /*****************************************************************************/ static void idt77252_phy_put(struct atm_dev *dev, unsigned char value, unsigned long addr) { … } static unsigned char idt77252_phy_get(struct atm_dev *dev, unsigned long addr) { … } static inline int idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam) { … } static int idt77252_send(struct atm_vcc *vcc, struct sk_buff *skb) { … } static int idt77252_send_oam(struct atm_vcc *vcc, void *cell, int flags) { … } static __inline__ unsigned int idt77252_fls(unsigned int x) { … } static u16 idt77252_int_to_atmfp(unsigned int rate) { … } static u8 idt77252_rate_logindex(struct idt77252_dev *card, int pcr) { … } static void idt77252_est_timer(struct timer_list *t) { … } static struct rate_estimator * idt77252_init_est(struct vc_map *vc, int pcr) { … } static int idt77252_init_cbr(struct idt77252_dev *card, struct vc_map *vc, struct atm_vcc *vcc, struct atm_qos *qos) { … } static int idt77252_init_ubr(struct idt77252_dev *card, struct vc_map *vc, struct atm_vcc *vcc, struct atm_qos *qos) { … } static int idt77252_init_tx(struct idt77252_dev *card, struct vc_map *vc, struct atm_vcc *vcc, struct atm_qos *qos) { … } static int idt77252_init_rx(struct idt77252_dev *card, struct vc_map *vc, struct atm_vcc *vcc, struct atm_qos *qos) { … } static int idt77252_open(struct atm_vcc *vcc) { … } static void idt77252_close(struct atm_vcc *vcc) { … } static int idt77252_change_qos(struct atm_vcc *vcc, struct atm_qos *qos, int flags) { … } static int idt77252_proc_read(struct atm_dev *dev, loff_t * pos, char *page) { … } /*****************************************************************************/ /* */ /* Interrupt handler */ /* */ /*****************************************************************************/ static void idt77252_collect_stat(struct idt77252_dev *card) { … } static irqreturn_t idt77252_interrupt(int irq, void *dev_id) { … } static void idt77252_softint(struct work_struct *work) { … } static int open_card_oam(struct idt77252_dev *card) { … } static void close_card_oam(struct idt77252_dev *card) { … } static int open_card_ubr0(struct idt77252_dev *card) { … } static void close_card_ubr0(struct idt77252_dev *card) { … } static int idt77252_dev_open(struct idt77252_dev *card) { … } static void idt77252_dev_close(struct atm_dev *dev) { … } /*****************************************************************************/ /* */ /* Initialisation and Deinitialization of IDT77252 */ /* */ /*****************************************************************************/ static void deinit_card(struct idt77252_dev *card) { … } static void init_sram(struct idt77252_dev *card) { … } static int init_card(struct atm_dev *dev) { … } /*****************************************************************************/ /* */ /* Probing of IDT77252 ABR SAR */ /* */ /*****************************************************************************/ static int idt77252_preset(struct idt77252_dev *card) { … } static unsigned long probe_sram(struct idt77252_dev *card) { … } static int idt77252_init_one(struct pci_dev *pcidev, const struct pci_device_id *id) { … } static const struct pci_device_id idt77252_pci_tbl[] = …; MODULE_DEVICE_TABLE(pci, idt77252_pci_tbl); static struct pci_driver idt77252_driver = …; static int __init idt77252_init(void) { … } static void __exit idt77252_exit(void) { … } module_init(…) …; module_exit(idt77252_exit); MODULE_LICENSE(…) …; module_param(vpibits, uint, 0); MODULE_PARM_DESC(…) …; #ifdef CONFIG_ATM_IDT77252_DEBUG module_param(debug, ulong, 0644); MODULE_PARM_DESC(…) …; #endif MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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