11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds 31da177e4SLinus Torvalds he.c 41da177e4SLinus Torvalds 51da177e4SLinus Torvalds ForeRunnerHE ATM Adapter driver for ATM on Linux 61da177e4SLinus Torvalds Copyright (C) 1999-2001 Naval Research Laboratory 71da177e4SLinus Torvalds 81da177e4SLinus Torvalds This library is free software; you can redistribute it and/or 91da177e4SLinus Torvalds modify it under the terms of the GNU Lesser General Public 101da177e4SLinus Torvalds License as published by the Free Software Foundation; either 111da177e4SLinus Torvalds version 2.1 of the License, or (at your option) any later version. 121da177e4SLinus Torvalds 131da177e4SLinus Torvalds This library is distributed in the hope that it will be useful, 141da177e4SLinus Torvalds but WITHOUT ANY WARRANTY; without even the implied warranty of 151da177e4SLinus Torvalds MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 161da177e4SLinus Torvalds Lesser General Public License for more details. 171da177e4SLinus Torvalds 181da177e4SLinus Torvalds You should have received a copy of the GNU Lesser General Public 191da177e4SLinus Torvalds License along with this library; if not, write to the Free Software 201da177e4SLinus Torvalds Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 211da177e4SLinus Torvalds 221da177e4SLinus Torvalds */ 231da177e4SLinus Torvalds 241da177e4SLinus Torvalds /* 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds he.c 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds ForeRunnerHE ATM Adapter driver for ATM on Linux 291da177e4SLinus Torvalds Copyright (C) 1999-2001 Naval Research Laboratory 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds Permission to use, copy, modify and distribute this software and its 321da177e4SLinus Torvalds documentation is hereby granted, provided that both the copyright 331da177e4SLinus Torvalds notice and this permission notice appear in all copies of the software, 341da177e4SLinus Torvalds derivative works or modified versions, and any portions thereof, and 351da177e4SLinus Torvalds that both notices appear in supporting documentation. 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds NRL ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" CONDITION AND 381da177e4SLinus Torvalds DISCLAIMS ANY LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER 391da177e4SLinus Torvalds RESULTING FROM THE USE OF THIS SOFTWARE. 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds This driver was written using the "Programmer's Reference Manual for 421da177e4SLinus Torvalds ForeRunnerHE(tm)", MANU0361-01 - Rev. A, 08/21/98. 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds AUTHORS: 451da177e4SLinus Torvalds chas williams <chas@cmf.nrl.navy.mil> 461da177e4SLinus Torvalds eric kinzie <ekinzie@cmf.nrl.navy.mil> 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds NOTES: 491da177e4SLinus Torvalds 4096 supported 'connections' 501da177e4SLinus Torvalds group 0 is used for all traffic 511da177e4SLinus Torvalds interrupt queue 0 is used for all interrupts 521da177e4SLinus Torvalds aal0 support (based on work from ulrich.u.muller@nokia.com) 531da177e4SLinus Torvalds 541da177e4SLinus Torvalds */ 551da177e4SLinus Torvalds 561da177e4SLinus Torvalds #include <linux/module.h> 571da177e4SLinus Torvalds #include <linux/kernel.h> 581da177e4SLinus Torvalds #include <linux/skbuff.h> 591da177e4SLinus Torvalds #include <linux/pci.h> 601da177e4SLinus Torvalds #include <linux/errno.h> 611da177e4SLinus Torvalds #include <linux/types.h> 621da177e4SLinus Torvalds #include <linux/string.h> 631da177e4SLinus Torvalds #include <linux/delay.h> 641da177e4SLinus Torvalds #include <linux/init.h> 651da177e4SLinus Torvalds #include <linux/mm.h> 661da177e4SLinus Torvalds #include <linux/sched.h> 671da177e4SLinus Torvalds #include <linux/timer.h> 681da177e4SLinus Torvalds #include <linux/interrupt.h> 69e5695f08Schas williams #include <linux/dma-mapping.h> 701da177e4SLinus Torvalds #include <asm/io.h> 711da177e4SLinus Torvalds #include <asm/byteorder.h> 721da177e4SLinus Torvalds #include <asm/uaccess.h> 731da177e4SLinus Torvalds 741da177e4SLinus Torvalds #include <linux/atmdev.h> 751da177e4SLinus Torvalds #include <linux/atm.h> 761da177e4SLinus Torvalds #include <linux/sonet.h> 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds #define USE_TASKLET 791da177e4SLinus Torvalds #undef USE_SCATTERGATHER 801da177e4SLinus Torvalds #undef USE_CHECKSUM_HW /* still confused about this */ 811da177e4SLinus Torvalds #define USE_RBPS 821da177e4SLinus Torvalds #undef USE_RBPS_POOL /* if memory is tight try this */ 831da177e4SLinus Torvalds #undef USE_RBPL_POOL /* if memory is tight try this */ 841da177e4SLinus Torvalds #define USE_TPD_POOL 851da177e4SLinus Torvalds /* #undef CONFIG_ATM_HE_USE_SUNI */ 861da177e4SLinus Torvalds /* #undef HE_DEBUG */ 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds #include "he.h" 891da177e4SLinus Torvalds #include "suni.h" 901da177e4SLinus Torvalds #include <linux/atm_he.h> 911da177e4SLinus Torvalds 921da177e4SLinus Torvalds #define hprintk(fmt,args...) printk(KERN_ERR DEV_LABEL "%d: " fmt, he_dev->number , ##args) 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds #ifdef HE_DEBUG 951da177e4SLinus Torvalds #define HPRINTK(fmt,args...) printk(KERN_DEBUG DEV_LABEL "%d: " fmt, he_dev->number , ##args) 961da177e4SLinus Torvalds #else /* !HE_DEBUG */ 971da177e4SLinus Torvalds #define HPRINTK(fmt,args...) do { } while (0) 981da177e4SLinus Torvalds #endif /* HE_DEBUG */ 991da177e4SLinus Torvalds 1001da177e4SLinus Torvalds /* declarations */ 1011da177e4SLinus Torvalds 1021da177e4SLinus Torvalds static int he_open(struct atm_vcc *vcc); 1031da177e4SLinus Torvalds static void he_close(struct atm_vcc *vcc); 1041da177e4SLinus Torvalds static int he_send(struct atm_vcc *vcc, struct sk_buff *skb); 1051da177e4SLinus Torvalds static int he_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg); 1067d12e780SDavid Howells static irqreturn_t he_irq_handler(int irq, void *dev_id); 1071da177e4SLinus Torvalds static void he_tasklet(unsigned long data); 1081da177e4SLinus Torvalds static int he_proc_read(struct atm_dev *dev,loff_t *pos,char *page); 1091da177e4SLinus Torvalds static int he_start(struct atm_dev *dev); 1101da177e4SLinus Torvalds static void he_stop(struct he_dev *dev); 1111da177e4SLinus Torvalds static void he_phy_put(struct atm_dev *, unsigned char, unsigned long); 1121da177e4SLinus Torvalds static unsigned char he_phy_get(struct atm_dev *, unsigned long); 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds static u8 read_prom_byte(struct he_dev *he_dev, int addr); 1151da177e4SLinus Torvalds 1161da177e4SLinus Torvalds /* globals */ 1171da177e4SLinus Torvalds 1181da177e4SLinus Torvalds static struct he_dev *he_devs; 1191da177e4SLinus Torvalds static int disable64; 1201da177e4SLinus Torvalds static short nvpibits = -1; 1211da177e4SLinus Torvalds static short nvcibits = -1; 1221da177e4SLinus Torvalds static short rx_skb_reserve = 16; 1231da177e4SLinus Torvalds static int irq_coalesce = 1; 1241da177e4SLinus Torvalds static int sdh = 0; 1251da177e4SLinus Torvalds 1261da177e4SLinus Torvalds /* Read from EEPROM = 0000 0011b */ 1271da177e4SLinus Torvalds static unsigned int readtab[] = { 1281da177e4SLinus Torvalds CS_HIGH | CLK_HIGH, 1291da177e4SLinus Torvalds CS_LOW | CLK_LOW, 1301da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1311da177e4SLinus Torvalds CLK_LOW, 1321da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1331da177e4SLinus Torvalds CLK_LOW, 1341da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1351da177e4SLinus Torvalds CLK_LOW, 1361da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1371da177e4SLinus Torvalds CLK_LOW, 1381da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1391da177e4SLinus Torvalds CLK_LOW, 1401da177e4SLinus Torvalds CLK_HIGH, /* 0 */ 1411da177e4SLinus Torvalds CLK_LOW | SI_HIGH, 1421da177e4SLinus Torvalds CLK_HIGH | SI_HIGH, /* 1 */ 1431da177e4SLinus Torvalds CLK_LOW | SI_HIGH, 1441da177e4SLinus Torvalds CLK_HIGH | SI_HIGH /* 1 */ 1451da177e4SLinus Torvalds }; 1461da177e4SLinus Torvalds 1471da177e4SLinus Torvalds /* Clock to read from/write to the EEPROM */ 1481da177e4SLinus Torvalds static unsigned int clocktab[] = { 1491da177e4SLinus Torvalds CLK_LOW, 1501da177e4SLinus Torvalds CLK_HIGH, 1511da177e4SLinus Torvalds CLK_LOW, 1521da177e4SLinus Torvalds CLK_HIGH, 1531da177e4SLinus Torvalds CLK_LOW, 1541da177e4SLinus Torvalds CLK_HIGH, 1551da177e4SLinus Torvalds CLK_LOW, 1561da177e4SLinus Torvalds CLK_HIGH, 1571da177e4SLinus Torvalds CLK_LOW, 1581da177e4SLinus Torvalds CLK_HIGH, 1591da177e4SLinus Torvalds CLK_LOW, 1601da177e4SLinus Torvalds CLK_HIGH, 1611da177e4SLinus Torvalds CLK_LOW, 1621da177e4SLinus Torvalds CLK_HIGH, 1631da177e4SLinus Torvalds CLK_LOW, 1641da177e4SLinus Torvalds CLK_HIGH, 1651da177e4SLinus Torvalds CLK_LOW 1661da177e4SLinus Torvalds }; 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds static struct atmdev_ops he_ops = 1691da177e4SLinus Torvalds { 1701da177e4SLinus Torvalds .open = he_open, 1711da177e4SLinus Torvalds .close = he_close, 1721da177e4SLinus Torvalds .ioctl = he_ioctl, 1731da177e4SLinus Torvalds .send = he_send, 1741da177e4SLinus Torvalds .phy_put = he_phy_put, 1751da177e4SLinus Torvalds .phy_get = he_phy_get, 1761da177e4SLinus Torvalds .proc_read = he_proc_read, 1771da177e4SLinus Torvalds .owner = THIS_MODULE 1781da177e4SLinus Torvalds }; 1791da177e4SLinus Torvalds 1801da177e4SLinus Torvalds #define he_writel(dev, val, reg) do { writel(val, (dev)->membase + (reg)); wmb(); } while (0) 1811da177e4SLinus Torvalds #define he_readl(dev, reg) readl((dev)->membase + (reg)) 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds /* section 2.12 connection memory access */ 1841da177e4SLinus Torvalds 1851da177e4SLinus Torvalds static __inline__ void 1861da177e4SLinus Torvalds he_writel_internal(struct he_dev *he_dev, unsigned val, unsigned addr, 1871da177e4SLinus Torvalds unsigned flags) 1881da177e4SLinus Torvalds { 1891da177e4SLinus Torvalds he_writel(he_dev, val, CON_DAT); 1901da177e4SLinus Torvalds (void) he_readl(he_dev, CON_DAT); /* flush posted writes */ 1911da177e4SLinus Torvalds he_writel(he_dev, flags | CON_CTL_WRITE | CON_CTL_ADDR(addr), CON_CTL); 1921da177e4SLinus Torvalds while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY); 1931da177e4SLinus Torvalds } 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds #define he_writel_rcm(dev, val, reg) \ 1961da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_RCM) 1971da177e4SLinus Torvalds 1981da177e4SLinus Torvalds #define he_writel_tcm(dev, val, reg) \ 1991da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_TCM) 2001da177e4SLinus Torvalds 2011da177e4SLinus Torvalds #define he_writel_mbox(dev, val, reg) \ 2021da177e4SLinus Torvalds he_writel_internal(dev, val, reg, CON_CTL_MBOX) 2031da177e4SLinus Torvalds 2041da177e4SLinus Torvalds static unsigned 2051da177e4SLinus Torvalds he_readl_internal(struct he_dev *he_dev, unsigned addr, unsigned flags) 2061da177e4SLinus Torvalds { 2071da177e4SLinus Torvalds he_writel(he_dev, flags | CON_CTL_READ | CON_CTL_ADDR(addr), CON_CTL); 2081da177e4SLinus Torvalds while (he_readl(he_dev, CON_CTL) & CON_CTL_BUSY); 2091da177e4SLinus Torvalds return he_readl(he_dev, CON_DAT); 2101da177e4SLinus Torvalds } 2111da177e4SLinus Torvalds 2121da177e4SLinus Torvalds #define he_readl_rcm(dev, reg) \ 2131da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_RCM) 2141da177e4SLinus Torvalds 2151da177e4SLinus Torvalds #define he_readl_tcm(dev, reg) \ 2161da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_TCM) 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds #define he_readl_mbox(dev, reg) \ 2191da177e4SLinus Torvalds he_readl_internal(dev, reg, CON_CTL_MBOX) 2201da177e4SLinus Torvalds 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds /* figure 2.2 connection id */ 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds #define he_mkcid(dev, vpi, vci) (((vpi << (dev)->vcibits) | vci) & 0x1fff) 2251da177e4SLinus Torvalds 2261da177e4SLinus Torvalds /* 2.5.1 per connection transmit state registers */ 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds #define he_writel_tsr0(dev, val, cid) \ 2291da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 0) 2301da177e4SLinus Torvalds #define he_readl_tsr0(dev, cid) \ 2311da177e4SLinus Torvalds he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 0) 2321da177e4SLinus Torvalds 2331da177e4SLinus Torvalds #define he_writel_tsr1(dev, val, cid) \ 2341da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 1) 2351da177e4SLinus Torvalds 2361da177e4SLinus Torvalds #define he_writel_tsr2(dev, val, cid) \ 2371da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 2) 2381da177e4SLinus Torvalds 2391da177e4SLinus Torvalds #define he_writel_tsr3(dev, val, cid) \ 2401da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 3) 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds #define he_writel_tsr4(dev, val, cid) \ 2431da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 4) 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvalds /* from page 2-20 2461da177e4SLinus Torvalds * 2471da177e4SLinus Torvalds * NOTE While the transmit connection is active, bits 23 through 0 2481da177e4SLinus Torvalds * of this register must not be written by the host. Byte 2491da177e4SLinus Torvalds * enables should be used during normal operation when writing 2501da177e4SLinus Torvalds * the most significant byte. 2511da177e4SLinus Torvalds */ 2521da177e4SLinus Torvalds 2531da177e4SLinus Torvalds #define he_writel_tsr4_upper(dev, val, cid) \ 2541da177e4SLinus Torvalds he_writel_internal(dev, val, CONFIG_TSRA | (cid << 3) | 4, \ 2551da177e4SLinus Torvalds CON_CTL_TCM \ 2561da177e4SLinus Torvalds | CON_BYTE_DISABLE_2 \ 2571da177e4SLinus Torvalds | CON_BYTE_DISABLE_1 \ 2581da177e4SLinus Torvalds | CON_BYTE_DISABLE_0) 2591da177e4SLinus Torvalds 2601da177e4SLinus Torvalds #define he_readl_tsr4(dev, cid) \ 2611da177e4SLinus Torvalds he_readl_tcm(dev, CONFIG_TSRA | (cid << 3) | 4) 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds #define he_writel_tsr5(dev, val, cid) \ 2641da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 5) 2651da177e4SLinus Torvalds 2661da177e4SLinus Torvalds #define he_writel_tsr6(dev, val, cid) \ 2671da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 6) 2681da177e4SLinus Torvalds 2691da177e4SLinus Torvalds #define he_writel_tsr7(dev, val, cid) \ 2701da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRA | (cid << 3) | 7) 2711da177e4SLinus Torvalds 2721da177e4SLinus Torvalds 2731da177e4SLinus Torvalds #define he_writel_tsr8(dev, val, cid) \ 2741da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 0) 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds #define he_writel_tsr9(dev, val, cid) \ 2771da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 1) 2781da177e4SLinus Torvalds 2791da177e4SLinus Torvalds #define he_writel_tsr10(dev, val, cid) \ 2801da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 2) 2811da177e4SLinus Torvalds 2821da177e4SLinus Torvalds #define he_writel_tsr11(dev, val, cid) \ 2831da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRB | (cid << 2) | 3) 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvalds 2861da177e4SLinus Torvalds #define he_writel_tsr12(dev, val, cid) \ 2871da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 0) 2881da177e4SLinus Torvalds 2891da177e4SLinus Torvalds #define he_writel_tsr13(dev, val, cid) \ 2901da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRC | (cid << 1) | 1) 2911da177e4SLinus Torvalds 2921da177e4SLinus Torvalds 2931da177e4SLinus Torvalds #define he_writel_tsr14(dev, val, cid) \ 2941da177e4SLinus Torvalds he_writel_tcm(dev, val, CONFIG_TSRD | cid) 2951da177e4SLinus Torvalds 2961da177e4SLinus Torvalds #define he_writel_tsr14_upper(dev, val, cid) \ 2971da177e4SLinus Torvalds he_writel_internal(dev, val, CONFIG_TSRD | cid, \ 2981da177e4SLinus Torvalds CON_CTL_TCM \ 2991da177e4SLinus Torvalds | CON_BYTE_DISABLE_2 \ 3001da177e4SLinus Torvalds | CON_BYTE_DISABLE_1 \ 3011da177e4SLinus Torvalds | CON_BYTE_DISABLE_0) 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds /* 2.7.1 per connection receive state registers */ 3041da177e4SLinus Torvalds 3051da177e4SLinus Torvalds #define he_writel_rsr0(dev, val, cid) \ 3061da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 0) 3071da177e4SLinus Torvalds #define he_readl_rsr0(dev, cid) \ 3081da177e4SLinus Torvalds he_readl_rcm(dev, 0x00000 | (cid << 3) | 0) 3091da177e4SLinus Torvalds 3101da177e4SLinus Torvalds #define he_writel_rsr1(dev, val, cid) \ 3111da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 1) 3121da177e4SLinus Torvalds 3131da177e4SLinus Torvalds #define he_writel_rsr2(dev, val, cid) \ 3141da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 2) 3151da177e4SLinus Torvalds 3161da177e4SLinus Torvalds #define he_writel_rsr3(dev, val, cid) \ 3171da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 3) 3181da177e4SLinus Torvalds 3191da177e4SLinus Torvalds #define he_writel_rsr4(dev, val, cid) \ 3201da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 4) 3211da177e4SLinus Torvalds 3221da177e4SLinus Torvalds #define he_writel_rsr5(dev, val, cid) \ 3231da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 5) 3241da177e4SLinus Torvalds 3251da177e4SLinus Torvalds #define he_writel_rsr6(dev, val, cid) \ 3261da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 6) 3271da177e4SLinus Torvalds 3281da177e4SLinus Torvalds #define he_writel_rsr7(dev, val, cid) \ 3291da177e4SLinus Torvalds he_writel_rcm(dev, val, 0x00000 | (cid << 3) | 7) 3301da177e4SLinus Torvalds 3311da177e4SLinus Torvalds static __inline__ struct atm_vcc* 3321da177e4SLinus Torvalds __find_vcc(struct he_dev *he_dev, unsigned cid) 3331da177e4SLinus Torvalds { 3341da177e4SLinus Torvalds struct hlist_head *head; 3351da177e4SLinus Torvalds struct atm_vcc *vcc; 3361da177e4SLinus Torvalds struct hlist_node *node; 3371da177e4SLinus Torvalds struct sock *s; 3381da177e4SLinus Torvalds short vpi; 3391da177e4SLinus Torvalds int vci; 3401da177e4SLinus Torvalds 3411da177e4SLinus Torvalds vpi = cid >> he_dev->vcibits; 3421da177e4SLinus Torvalds vci = cid & ((1 << he_dev->vcibits) - 1); 3431da177e4SLinus Torvalds head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; 3441da177e4SLinus Torvalds 3451da177e4SLinus Torvalds sk_for_each(s, node, head) { 3461da177e4SLinus Torvalds vcc = atm_sk(s); 3471da177e4SLinus Torvalds if (vcc->dev == he_dev->atm_dev && 3481da177e4SLinus Torvalds vcc->vci == vci && vcc->vpi == vpi && 3491da177e4SLinus Torvalds vcc->qos.rxtp.traffic_class != ATM_NONE) { 3501da177e4SLinus Torvalds return vcc; 3511da177e4SLinus Torvalds } 3521da177e4SLinus Torvalds } 3531da177e4SLinus Torvalds return NULL; 3541da177e4SLinus Torvalds } 3551da177e4SLinus Torvalds 3561da177e4SLinus Torvalds static int __devinit 3571da177e4SLinus Torvalds he_init_one(struct pci_dev *pci_dev, const struct pci_device_id *pci_ent) 3581da177e4SLinus Torvalds { 3591da177e4SLinus Torvalds struct atm_dev *atm_dev = NULL; 3601da177e4SLinus Torvalds struct he_dev *he_dev = NULL; 3611da177e4SLinus Torvalds int err = 0; 3621da177e4SLinus Torvalds 363900092a4SAdrian Bunk printk(KERN_INFO "ATM he driver\n"); 3641da177e4SLinus Torvalds 3651da177e4SLinus Torvalds if (pci_enable_device(pci_dev)) 3661da177e4SLinus Torvalds return -EIO; 367e5695f08Schas williams if (pci_set_dma_mask(pci_dev, DMA_32BIT_MASK) != 0) { 3681da177e4SLinus Torvalds printk(KERN_WARNING "he: no suitable dma available\n"); 3691da177e4SLinus Torvalds err = -EIO; 3701da177e4SLinus Torvalds goto init_one_failure; 3711da177e4SLinus Torvalds } 3721da177e4SLinus Torvalds 3731da177e4SLinus Torvalds atm_dev = atm_dev_register(DEV_LABEL, &he_ops, -1, NULL); 3741da177e4SLinus Torvalds if (!atm_dev) { 3751da177e4SLinus Torvalds err = -ENODEV; 3761da177e4SLinus Torvalds goto init_one_failure; 3771da177e4SLinus Torvalds } 3781da177e4SLinus Torvalds pci_set_drvdata(pci_dev, atm_dev); 3791da177e4SLinus Torvalds 3800c1cca1dSOm Narasimhan he_dev = kzalloc(sizeof(struct he_dev), 3811da177e4SLinus Torvalds GFP_KERNEL); 3821da177e4SLinus Torvalds if (!he_dev) { 3831da177e4SLinus Torvalds err = -ENOMEM; 3841da177e4SLinus Torvalds goto init_one_failure; 3851da177e4SLinus Torvalds } 3861da177e4SLinus Torvalds he_dev->pci_dev = pci_dev; 3871da177e4SLinus Torvalds he_dev->atm_dev = atm_dev; 3881da177e4SLinus Torvalds he_dev->atm_dev->dev_data = he_dev; 3891da177e4SLinus Torvalds atm_dev->dev_data = he_dev; 3901da177e4SLinus Torvalds he_dev->number = atm_dev->number; 3918a8037acSchas williams #ifdef USE_TASKLET 3928a8037acSchas williams tasklet_init(&he_dev->tasklet, he_tasklet, (unsigned long) he_dev); 3938a8037acSchas williams #endif 3948a8037acSchas williams spin_lock_init(&he_dev->global_lock); 3958a8037acSchas williams 3961da177e4SLinus Torvalds if (he_start(atm_dev)) { 3971da177e4SLinus Torvalds he_stop(he_dev); 3981da177e4SLinus Torvalds err = -ENODEV; 3991da177e4SLinus Torvalds goto init_one_failure; 4001da177e4SLinus Torvalds } 4011da177e4SLinus Torvalds he_dev->next = NULL; 4021da177e4SLinus Torvalds if (he_devs) 4031da177e4SLinus Torvalds he_dev->next = he_devs; 4041da177e4SLinus Torvalds he_devs = he_dev; 4051da177e4SLinus Torvalds return 0; 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds init_one_failure: 4081da177e4SLinus Torvalds if (atm_dev) 4091da177e4SLinus Torvalds atm_dev_deregister(atm_dev); 4101da177e4SLinus Torvalds kfree(he_dev); 4111da177e4SLinus Torvalds pci_disable_device(pci_dev); 4121da177e4SLinus Torvalds return err; 4131da177e4SLinus Torvalds } 4141da177e4SLinus Torvalds 4151da177e4SLinus Torvalds static void __devexit 4161da177e4SLinus Torvalds he_remove_one (struct pci_dev *pci_dev) 4171da177e4SLinus Torvalds { 4181da177e4SLinus Torvalds struct atm_dev *atm_dev; 4191da177e4SLinus Torvalds struct he_dev *he_dev; 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds atm_dev = pci_get_drvdata(pci_dev); 4221da177e4SLinus Torvalds he_dev = HE_DEV(atm_dev); 4231da177e4SLinus Torvalds 4241da177e4SLinus Torvalds /* need to remove from he_devs */ 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds he_stop(he_dev); 4271da177e4SLinus Torvalds atm_dev_deregister(atm_dev); 4281da177e4SLinus Torvalds kfree(he_dev); 4291da177e4SLinus Torvalds 4301da177e4SLinus Torvalds pci_set_drvdata(pci_dev, NULL); 4311da177e4SLinus Torvalds pci_disable_device(pci_dev); 4321da177e4SLinus Torvalds } 4331da177e4SLinus Torvalds 4341da177e4SLinus Torvalds 4351da177e4SLinus Torvalds static unsigned 4361da177e4SLinus Torvalds rate_to_atmf(unsigned rate) /* cps to atm forum format */ 4371da177e4SLinus Torvalds { 4381da177e4SLinus Torvalds #define NONZERO (1 << 14) 4391da177e4SLinus Torvalds 4401da177e4SLinus Torvalds unsigned exp = 0; 4411da177e4SLinus Torvalds 4421da177e4SLinus Torvalds if (rate == 0) 4431da177e4SLinus Torvalds return 0; 4441da177e4SLinus Torvalds 4451da177e4SLinus Torvalds rate <<= 9; 4461da177e4SLinus Torvalds while (rate > 0x3ff) { 4471da177e4SLinus Torvalds ++exp; 4481da177e4SLinus Torvalds rate >>= 1; 4491da177e4SLinus Torvalds } 4501da177e4SLinus Torvalds 4511da177e4SLinus Torvalds return (NONZERO | (exp << 9) | (rate & 0x1ff)); 4521da177e4SLinus Torvalds } 4531da177e4SLinus Torvalds 4545b7c714eSRoland Dreier static void __devinit 4551da177e4SLinus Torvalds he_init_rx_lbfp0(struct he_dev *he_dev) 4561da177e4SLinus Torvalds { 4571da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 4581da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 4591da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 4601da177e4SLinus Torvalds unsigned row_offset = he_dev->r0_startrow * he_dev->bytes_per_row; 4611da177e4SLinus Torvalds 4621da177e4SLinus Torvalds lbufd_index = 0; 4631da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA); 4641da177e4SLinus Torvalds 4651da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, RLBF0_H); 4661da177e4SLinus Torvalds 4671da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->r0_numbuffs; ++i) { 4681da177e4SLinus Torvalds lbufd_index += 2; 4691da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 4701da177e4SLinus Torvalds 4711da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 4721da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 4731da177e4SLinus Torvalds 4741da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 4751da177e4SLinus Torvalds lbuf_count = 0; 4761da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 4771da177e4SLinus Torvalds } 4781da177e4SLinus Torvalds lbm_offset += 4; 4791da177e4SLinus Torvalds } 4801da177e4SLinus Torvalds 4811da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 2, RLBF0_T); 4821da177e4SLinus Torvalds he_writel(he_dev, he_dev->r0_numbuffs, RLBF0_C); 4831da177e4SLinus Torvalds } 4841da177e4SLinus Torvalds 4855b7c714eSRoland Dreier static void __devinit 4861da177e4SLinus Torvalds he_init_rx_lbfp1(struct he_dev *he_dev) 4871da177e4SLinus Torvalds { 4881da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 4891da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 4901da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 4911da177e4SLinus Torvalds unsigned row_offset = he_dev->r1_startrow * he_dev->bytes_per_row; 4921da177e4SLinus Torvalds 4931da177e4SLinus Torvalds lbufd_index = 1; 4941da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index); 4951da177e4SLinus Torvalds 4961da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, RLBF1_H); 4971da177e4SLinus Torvalds 4981da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->r1_numbuffs; ++i) { 4991da177e4SLinus Torvalds lbufd_index += 2; 5001da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 5011da177e4SLinus Torvalds 5021da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 5031da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 5041da177e4SLinus Torvalds 5051da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 5061da177e4SLinus Torvalds lbuf_count = 0; 5071da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 5081da177e4SLinus Torvalds } 5091da177e4SLinus Torvalds lbm_offset += 4; 5101da177e4SLinus Torvalds } 5111da177e4SLinus Torvalds 5121da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 2, RLBF1_T); 5131da177e4SLinus Torvalds he_writel(he_dev, he_dev->r1_numbuffs, RLBF1_C); 5141da177e4SLinus Torvalds } 5151da177e4SLinus Torvalds 5165b7c714eSRoland Dreier static void __devinit 5171da177e4SLinus Torvalds he_init_tx_lbfp(struct he_dev *he_dev) 5181da177e4SLinus Torvalds { 5191da177e4SLinus Torvalds unsigned i, lbm_offset, lbufd_index, lbuf_addr, lbuf_count; 5201da177e4SLinus Torvalds unsigned lbufs_per_row = he_dev->cells_per_row / he_dev->cells_per_lbuf; 5211da177e4SLinus Torvalds unsigned lbuf_bufsize = he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD; 5221da177e4SLinus Torvalds unsigned row_offset = he_dev->tx_startrow * he_dev->bytes_per_row; 5231da177e4SLinus Torvalds 5241da177e4SLinus Torvalds lbufd_index = he_dev->r0_numbuffs + he_dev->r1_numbuffs; 5251da177e4SLinus Torvalds lbm_offset = he_readl(he_dev, RCMLBM_BA) + (2 * lbufd_index); 5261da177e4SLinus Torvalds 5271da177e4SLinus Torvalds he_writel(he_dev, lbufd_index, TLBF_H); 5281da177e4SLinus Torvalds 5291da177e4SLinus Torvalds for (i = 0, lbuf_count = 0; i < he_dev->tx_numbuffs; ++i) { 5301da177e4SLinus Torvalds lbufd_index += 1; 5311da177e4SLinus Torvalds lbuf_addr = (row_offset + (lbuf_count * lbuf_bufsize)) / 32; 5321da177e4SLinus Torvalds 5331da177e4SLinus Torvalds he_writel_rcm(he_dev, lbuf_addr, lbm_offset); 5341da177e4SLinus Torvalds he_writel_rcm(he_dev, lbufd_index, lbm_offset + 1); 5351da177e4SLinus Torvalds 5361da177e4SLinus Torvalds if (++lbuf_count == lbufs_per_row) { 5371da177e4SLinus Torvalds lbuf_count = 0; 5381da177e4SLinus Torvalds row_offset += he_dev->bytes_per_row; 5391da177e4SLinus Torvalds } 5401da177e4SLinus Torvalds lbm_offset += 2; 5411da177e4SLinus Torvalds } 5421da177e4SLinus Torvalds 5431da177e4SLinus Torvalds he_writel(he_dev, lbufd_index - 1, TLBF_T); 5441da177e4SLinus Torvalds } 5451da177e4SLinus Torvalds 5465b7c714eSRoland Dreier static int __devinit 5471da177e4SLinus Torvalds he_init_tpdrq(struct he_dev *he_dev) 5481da177e4SLinus Torvalds { 5491da177e4SLinus Torvalds he_dev->tpdrq_base = pci_alloc_consistent(he_dev->pci_dev, 5501da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq), &he_dev->tpdrq_phys); 5511da177e4SLinus Torvalds if (he_dev->tpdrq_base == NULL) { 5521da177e4SLinus Torvalds hprintk("failed to alloc tpdrq\n"); 5531da177e4SLinus Torvalds return -ENOMEM; 5541da177e4SLinus Torvalds } 5551da177e4SLinus Torvalds memset(he_dev->tpdrq_base, 0, 5561da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE * sizeof(struct he_tpdrq)); 5571da177e4SLinus Torvalds 5581da177e4SLinus Torvalds he_dev->tpdrq_tail = he_dev->tpdrq_base; 5591da177e4SLinus Torvalds he_dev->tpdrq_head = he_dev->tpdrq_base; 5601da177e4SLinus Torvalds 5611da177e4SLinus Torvalds he_writel(he_dev, he_dev->tpdrq_phys, TPDRQ_B_H); 5621da177e4SLinus Torvalds he_writel(he_dev, 0, TPDRQ_T); 5631da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TPDRQ_SIZE - 1, TPDRQ_S); 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvalds return 0; 5661da177e4SLinus Torvalds } 5671da177e4SLinus Torvalds 5685b7c714eSRoland Dreier static void __devinit 5691da177e4SLinus Torvalds he_init_cs_block(struct he_dev *he_dev) 5701da177e4SLinus Torvalds { 5711da177e4SLinus Torvalds unsigned clock, rate, delta; 5721da177e4SLinus Torvalds int reg; 5731da177e4SLinus Torvalds 5741da177e4SLinus Torvalds /* 5.1.7 cs block initialization */ 5751da177e4SLinus Torvalds 5761da177e4SLinus Torvalds for (reg = 0; reg < 0x20; ++reg) 5771da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0, CS_STTIM0 + reg); 5781da177e4SLinus Torvalds 5791da177e4SLinus Torvalds /* rate grid timer reload values */ 5801da177e4SLinus Torvalds 5811da177e4SLinus Torvalds clock = he_is622(he_dev) ? 66667000 : 50000000; 5821da177e4SLinus Torvalds rate = he_dev->atm_dev->link_rate; 5831da177e4SLinus Torvalds delta = rate / 16 / 2; 5841da177e4SLinus Torvalds 5851da177e4SLinus Torvalds for (reg = 0; reg < 0x10; ++reg) { 5861da177e4SLinus Torvalds /* 2.4 internal transmit function 5871da177e4SLinus Torvalds * 5881da177e4SLinus Torvalds * we initialize the first row in the rate grid. 5891da177e4SLinus Torvalds * values are period (in clock cycles) of timer 5901da177e4SLinus Torvalds */ 5911da177e4SLinus Torvalds unsigned period = clock / rate; 5921da177e4SLinus Torvalds 5931da177e4SLinus Torvalds he_writel_mbox(he_dev, period, CS_TGRLD0 + reg); 5941da177e4SLinus Torvalds rate -= delta; 5951da177e4SLinus Torvalds } 5961da177e4SLinus Torvalds 5971da177e4SLinus Torvalds if (he_is622(he_dev)) { 5981da177e4SLinus Torvalds /* table 5.2 (4 cells per lbuf) */ 5991da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000800fa, CS_ERTHR0); 6001da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000c33cb, CS_ERTHR1); 6011da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0010101b, CS_ERTHR2); 6021da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00181dac, CS_ERTHR3); 6031da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00280600, CS_ERTHR4); 6041da177e4SLinus Torvalds 6051da177e4SLinus Torvalds /* table 5.3, 5.4, 5.5, 5.6, 5.7 */ 6061da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x023de8b3, CS_ERCTL0); 6071da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1801, CS_ERCTL1); 6081da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_ERCTL2); 6091da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0); 6101da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_ERSTAT1); 6111da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x14585, CS_RTFWR); 6121da177e4SLinus Torvalds 6131da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4680, CS_RTATR); 6141da177e4SLinus Torvalds 6151da177e4SLinus Torvalds /* table 5.8 */ 6161da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00159ece, CS_TFBSET); 6171da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_WCRMAX); 6181da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5eb3, CS_WCRMIN); 6191da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xe8b3, CS_WCRINC); 6201da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xdeb3, CS_WCRDEC); 6211da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x68b3, CS_WCRCEIL); 6221da177e4SLinus Torvalds 6231da177e4SLinus Torvalds /* table 5.9 */ 6241da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5, CS_OTPPER); 6251da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x14, CS_OTWPER); 6261da177e4SLinus Torvalds } else { 6271da177e4SLinus Torvalds /* table 5.1 (4 cells per lbuf) */ 6281da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000400ea, CS_ERTHR0); 6291da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00063388, CS_ERTHR1); 6301da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x00081018, CS_ERTHR2); 6311da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000c1dac, CS_ERTHR3); 6321da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0014051a, CS_ERTHR4); 6331da177e4SLinus Torvalds 6341da177e4SLinus Torvalds /* table 5.3, 5.4, 5.5, 5.6, 5.7 */ 6351da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0235e4b1, CS_ERCTL0); 6361da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4701, CS_ERCTL1); 6371da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_ERCTL2); 6381da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1280, CS_ERSTAT0); 6391da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_ERSTAT1); 6401da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xf424, CS_RTFWR); 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x4680, CS_RTATR); 6431da177e4SLinus Torvalds 6441da177e4SLinus Torvalds /* table 5.8 */ 6451da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x000563b7, CS_TFBSET); 6461da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_WCRMAX); 6471da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x5ab1, CS_WCRMIN); 6481da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xe4b1, CS_WCRINC); 6491da177e4SLinus Torvalds he_writel_mbox(he_dev, 0xdab1, CS_WCRDEC); 6501da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x64b1, CS_WCRCEIL); 6511da177e4SLinus Torvalds 6521da177e4SLinus Torvalds /* table 5.9 */ 6531da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x6, CS_OTPPER); 6541da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x1e, CS_OTWPER); 6551da177e4SLinus Torvalds } 6561da177e4SLinus Torvalds 6571da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x8, CS_OTTLIM); 6581da177e4SLinus Torvalds 6591da177e4SLinus Torvalds for (reg = 0; reg < 0x8; ++reg) 6601da177e4SLinus Torvalds he_writel_mbox(he_dev, 0x0, CS_HGRRT0 + reg); 6611da177e4SLinus Torvalds 6621da177e4SLinus Torvalds } 6631da177e4SLinus Torvalds 6645b7c714eSRoland Dreier static int __devinit 6651da177e4SLinus Torvalds he_init_cs_block_rcm(struct he_dev *he_dev) 6661da177e4SLinus Torvalds { 6671da177e4SLinus Torvalds unsigned (*rategrid)[16][16]; 6681da177e4SLinus Torvalds unsigned rate, delta; 6691da177e4SLinus Torvalds int i, j, reg; 6701da177e4SLinus Torvalds 6711da177e4SLinus Torvalds unsigned rate_atmf, exp, man; 6721da177e4SLinus Torvalds unsigned long long rate_cps; 6731da177e4SLinus Torvalds int mult, buf, buf_limit = 4; 6741da177e4SLinus Torvalds 6751da177e4SLinus Torvalds rategrid = kmalloc( sizeof(unsigned) * 16 * 16, GFP_KERNEL); 6761da177e4SLinus Torvalds if (!rategrid) 6771da177e4SLinus Torvalds return -ENOMEM; 6781da177e4SLinus Torvalds 6791da177e4SLinus Torvalds /* initialize rate grid group table */ 6801da177e4SLinus Torvalds 6811da177e4SLinus Torvalds for (reg = 0x0; reg < 0xff; ++reg) 6821da177e4SLinus Torvalds he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg); 6831da177e4SLinus Torvalds 6841da177e4SLinus Torvalds /* initialize rate controller groups */ 6851da177e4SLinus Torvalds 6861da177e4SLinus Torvalds for (reg = 0x100; reg < 0x1ff; ++reg) 6871da177e4SLinus Torvalds he_writel_rcm(he_dev, 0x0, CONFIG_RCMABR + reg); 6881da177e4SLinus Torvalds 6891da177e4SLinus Torvalds /* initialize tNrm lookup table */ 6901da177e4SLinus Torvalds 6911da177e4SLinus Torvalds /* the manual makes reference to a routine in a sample driver 6921da177e4SLinus Torvalds for proper configuration; fortunately, we only need this 6931da177e4SLinus Torvalds in order to support abr connection */ 6941da177e4SLinus Torvalds 6951da177e4SLinus Torvalds /* initialize rate to group table */ 6961da177e4SLinus Torvalds 6971da177e4SLinus Torvalds rate = he_dev->atm_dev->link_rate; 6981da177e4SLinus Torvalds delta = rate / 32; 6991da177e4SLinus Torvalds 7001da177e4SLinus Torvalds /* 7011da177e4SLinus Torvalds * 2.4 transmit internal functions 7021da177e4SLinus Torvalds * 7031da177e4SLinus Torvalds * we construct a copy of the rate grid used by the scheduler 7041da177e4SLinus Torvalds * in order to construct the rate to group table below 7051da177e4SLinus Torvalds */ 7061da177e4SLinus Torvalds 7071da177e4SLinus Torvalds for (j = 0; j < 16; j++) { 7081da177e4SLinus Torvalds (*rategrid)[0][j] = rate; 7091da177e4SLinus Torvalds rate -= delta; 7101da177e4SLinus Torvalds } 7111da177e4SLinus Torvalds 7121da177e4SLinus Torvalds for (i = 1; i < 16; i++) 7131da177e4SLinus Torvalds for (j = 0; j < 16; j++) 7141da177e4SLinus Torvalds if (i > 14) 7151da177e4SLinus Torvalds (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 4; 7161da177e4SLinus Torvalds else 7171da177e4SLinus Torvalds (*rategrid)[i][j] = (*rategrid)[i - 1][j] / 2; 7181da177e4SLinus Torvalds 7191da177e4SLinus Torvalds /* 7201da177e4SLinus Torvalds * 2.4 transmit internal function 7211da177e4SLinus Torvalds * 7221da177e4SLinus Torvalds * this table maps the upper 5 bits of exponent and mantissa 7231da177e4SLinus Torvalds * of the atm forum representation of the rate into an index 7241da177e4SLinus Torvalds * on rate grid 7251da177e4SLinus Torvalds */ 7261da177e4SLinus Torvalds 7271da177e4SLinus Torvalds rate_atmf = 0; 7281da177e4SLinus Torvalds while (rate_atmf < 0x400) { 7291da177e4SLinus Torvalds man = (rate_atmf & 0x1f) << 4; 7301da177e4SLinus Torvalds exp = rate_atmf >> 5; 7311da177e4SLinus Torvalds 7321da177e4SLinus Torvalds /* 7331da177e4SLinus Torvalds instead of '/ 512', use '>> 9' to prevent a call 7341da177e4SLinus Torvalds to divdu3 on x86 platforms 7351da177e4SLinus Torvalds */ 7361da177e4SLinus Torvalds rate_cps = (unsigned long long) (1 << exp) * (man + 512) >> 9; 7371da177e4SLinus Torvalds 7381da177e4SLinus Torvalds if (rate_cps < 10) 7391da177e4SLinus Torvalds rate_cps = 10; /* 2.2.1 minimum payload rate is 10 cps */ 7401da177e4SLinus Torvalds 7411da177e4SLinus Torvalds for (i = 255; i > 0; i--) 7421da177e4SLinus Torvalds if ((*rategrid)[i/16][i%16] >= rate_cps) 7431da177e4SLinus Torvalds break; /* pick nearest rate instead? */ 7441da177e4SLinus Torvalds 7451da177e4SLinus Torvalds /* 7461da177e4SLinus Torvalds * each table entry is 16 bits: (rate grid index (8 bits) 7471da177e4SLinus Torvalds * and a buffer limit (8 bits) 7481da177e4SLinus Torvalds * there are two table entries in each 32-bit register 7491da177e4SLinus Torvalds */ 7501da177e4SLinus Torvalds 7511da177e4SLinus Torvalds #ifdef notdef 7521da177e4SLinus Torvalds buf = rate_cps * he_dev->tx_numbuffs / 7531da177e4SLinus Torvalds (he_dev->atm_dev->link_rate * 2); 7541da177e4SLinus Torvalds #else 7551da177e4SLinus Torvalds /* this is pretty, but avoids _divdu3 and is mostly correct */ 7561da177e4SLinus Torvalds mult = he_dev->atm_dev->link_rate / ATM_OC3_PCR; 7571da177e4SLinus Torvalds if (rate_cps > (272 * mult)) 7581da177e4SLinus Torvalds buf = 4; 7591da177e4SLinus Torvalds else if (rate_cps > (204 * mult)) 7601da177e4SLinus Torvalds buf = 3; 7611da177e4SLinus Torvalds else if (rate_cps > (136 * mult)) 7621da177e4SLinus Torvalds buf = 2; 7631da177e4SLinus Torvalds else if (rate_cps > (68 * mult)) 7641da177e4SLinus Torvalds buf = 1; 7651da177e4SLinus Torvalds else 7661da177e4SLinus Torvalds buf = 0; 7671da177e4SLinus Torvalds #endif 7681da177e4SLinus Torvalds if (buf > buf_limit) 7691da177e4SLinus Torvalds buf = buf_limit; 7701da177e4SLinus Torvalds reg = (reg << 16) | ((i << 8) | buf); 7711da177e4SLinus Torvalds 7721da177e4SLinus Torvalds #define RTGTBL_OFFSET 0x400 7731da177e4SLinus Torvalds 7741da177e4SLinus Torvalds if (rate_atmf & 0x1) 7751da177e4SLinus Torvalds he_writel_rcm(he_dev, reg, 7761da177e4SLinus Torvalds CONFIG_RCMABR + RTGTBL_OFFSET + (rate_atmf >> 1)); 7771da177e4SLinus Torvalds 7781da177e4SLinus Torvalds ++rate_atmf; 7791da177e4SLinus Torvalds } 7801da177e4SLinus Torvalds 7811da177e4SLinus Torvalds kfree(rategrid); 7821da177e4SLinus Torvalds return 0; 7831da177e4SLinus Torvalds } 7841da177e4SLinus Torvalds 7855b7c714eSRoland Dreier static int __devinit 7861da177e4SLinus Torvalds he_init_group(struct he_dev *he_dev, int group) 7871da177e4SLinus Torvalds { 7881da177e4SLinus Torvalds int i; 7891da177e4SLinus Torvalds 7901da177e4SLinus Torvalds #ifdef USE_RBPS 7911da177e4SLinus Torvalds /* small buffer pool */ 7921da177e4SLinus Torvalds #ifdef USE_RBPS_POOL 7931da177e4SLinus Torvalds he_dev->rbps_pool = pci_pool_create("rbps", he_dev->pci_dev, 7941da177e4SLinus Torvalds CONFIG_RBPS_BUFSIZE, 8, 0); 7951da177e4SLinus Torvalds if (he_dev->rbps_pool == NULL) { 7961da177e4SLinus Torvalds hprintk("unable to create rbps pages\n"); 7971da177e4SLinus Torvalds return -ENOMEM; 7981da177e4SLinus Torvalds } 7991da177e4SLinus Torvalds #else /* !USE_RBPS_POOL */ 8001da177e4SLinus Torvalds he_dev->rbps_pages = pci_alloc_consistent(he_dev->pci_dev, 8011da177e4SLinus Torvalds CONFIG_RBPS_SIZE * CONFIG_RBPS_BUFSIZE, &he_dev->rbps_pages_phys); 8021da177e4SLinus Torvalds if (he_dev->rbps_pages == NULL) { 8031da177e4SLinus Torvalds hprintk("unable to create rbps page pool\n"); 8041da177e4SLinus Torvalds return -ENOMEM; 8051da177e4SLinus Torvalds } 8061da177e4SLinus Torvalds #endif /* USE_RBPS_POOL */ 8071da177e4SLinus Torvalds 8081da177e4SLinus Torvalds he_dev->rbps_base = pci_alloc_consistent(he_dev->pci_dev, 8091da177e4SLinus Torvalds CONFIG_RBPS_SIZE * sizeof(struct he_rbp), &he_dev->rbps_phys); 8101da177e4SLinus Torvalds if (he_dev->rbps_base == NULL) { 8111da177e4SLinus Torvalds hprintk("failed to alloc rbps\n"); 8121da177e4SLinus Torvalds return -ENOMEM; 8131da177e4SLinus Torvalds } 8141da177e4SLinus Torvalds memset(he_dev->rbps_base, 0, CONFIG_RBPS_SIZE * sizeof(struct he_rbp)); 8151da177e4SLinus Torvalds he_dev->rbps_virt = kmalloc(CONFIG_RBPS_SIZE * sizeof(struct he_virt), GFP_KERNEL); 8161da177e4SLinus Torvalds 8171da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPS_SIZE; ++i) { 8181da177e4SLinus Torvalds dma_addr_t dma_handle; 8191da177e4SLinus Torvalds void *cpuaddr; 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds #ifdef USE_RBPS_POOL 822441e143eSChristoph Lameter cpuaddr = pci_pool_alloc(he_dev->rbps_pool, GFP_KERNEL|GFP_DMA, &dma_handle); 8231da177e4SLinus Torvalds if (cpuaddr == NULL) 8241da177e4SLinus Torvalds return -ENOMEM; 8251da177e4SLinus Torvalds #else 8261da177e4SLinus Torvalds cpuaddr = he_dev->rbps_pages + (i * CONFIG_RBPS_BUFSIZE); 8271da177e4SLinus Torvalds dma_handle = he_dev->rbps_pages_phys + (i * CONFIG_RBPS_BUFSIZE); 8281da177e4SLinus Torvalds #endif 8291da177e4SLinus Torvalds 8301da177e4SLinus Torvalds he_dev->rbps_virt[i].virt = cpuaddr; 8311da177e4SLinus Torvalds he_dev->rbps_base[i].status = RBP_LOANED | RBP_SMALLBUF | (i << RBP_INDEX_OFF); 8321da177e4SLinus Torvalds he_dev->rbps_base[i].phys = dma_handle; 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds } 8351da177e4SLinus Torvalds he_dev->rbps_tail = &he_dev->rbps_base[CONFIG_RBPS_SIZE - 1]; 8361da177e4SLinus Torvalds 8371da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbps_phys, G0_RBPS_S + (group * 32)); 8381da177e4SLinus Torvalds he_writel(he_dev, RBPS_MASK(he_dev->rbps_tail), 8391da177e4SLinus Torvalds G0_RBPS_T + (group * 32)); 8401da177e4SLinus Torvalds he_writel(he_dev, CONFIG_RBPS_BUFSIZE/4, 8411da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 8421da177e4SLinus Torvalds he_writel(he_dev, 8431da177e4SLinus Torvalds RBP_THRESH(CONFIG_RBPS_THRESH) | 8441da177e4SLinus Torvalds RBP_QSIZE(CONFIG_RBPS_SIZE - 1) | 8451da177e4SLinus Torvalds RBP_INT_ENB, 8461da177e4SLinus Torvalds G0_RBPS_QI + (group * 32)); 8471da177e4SLinus Torvalds #else /* !USE_RBPS */ 8481da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32)); 8491da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32)); 8501da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32)); 8511da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 8521da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 8531da177e4SLinus Torvalds #endif /* USE_RBPS */ 8541da177e4SLinus Torvalds 8551da177e4SLinus Torvalds /* large buffer pool */ 8561da177e4SLinus Torvalds #ifdef USE_RBPL_POOL 8571da177e4SLinus Torvalds he_dev->rbpl_pool = pci_pool_create("rbpl", he_dev->pci_dev, 8581da177e4SLinus Torvalds CONFIG_RBPL_BUFSIZE, 8, 0); 8591da177e4SLinus Torvalds if (he_dev->rbpl_pool == NULL) { 8601da177e4SLinus Torvalds hprintk("unable to create rbpl pool\n"); 8611da177e4SLinus Torvalds return -ENOMEM; 8621da177e4SLinus Torvalds } 8631da177e4SLinus Torvalds #else /* !USE_RBPL_POOL */ 8641da177e4SLinus Torvalds he_dev->rbpl_pages = (void *) pci_alloc_consistent(he_dev->pci_dev, 8651da177e4SLinus Torvalds CONFIG_RBPL_SIZE * CONFIG_RBPL_BUFSIZE, &he_dev->rbpl_pages_phys); 8661da177e4SLinus Torvalds if (he_dev->rbpl_pages == NULL) { 8671da177e4SLinus Torvalds hprintk("unable to create rbpl pages\n"); 8681da177e4SLinus Torvalds return -ENOMEM; 8691da177e4SLinus Torvalds } 8701da177e4SLinus Torvalds #endif /* USE_RBPL_POOL */ 8711da177e4SLinus Torvalds 8721da177e4SLinus Torvalds he_dev->rbpl_base = pci_alloc_consistent(he_dev->pci_dev, 8731da177e4SLinus Torvalds CONFIG_RBPL_SIZE * sizeof(struct he_rbp), &he_dev->rbpl_phys); 8741da177e4SLinus Torvalds if (he_dev->rbpl_base == NULL) { 8751da177e4SLinus Torvalds hprintk("failed to alloc rbpl\n"); 8761da177e4SLinus Torvalds return -ENOMEM; 8771da177e4SLinus Torvalds } 8781da177e4SLinus Torvalds memset(he_dev->rbpl_base, 0, CONFIG_RBPL_SIZE * sizeof(struct he_rbp)); 8791da177e4SLinus Torvalds he_dev->rbpl_virt = kmalloc(CONFIG_RBPL_SIZE * sizeof(struct he_virt), GFP_KERNEL); 8801da177e4SLinus Torvalds 8811da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPL_SIZE; ++i) { 8821da177e4SLinus Torvalds dma_addr_t dma_handle; 8831da177e4SLinus Torvalds void *cpuaddr; 8841da177e4SLinus Torvalds 8851da177e4SLinus Torvalds #ifdef USE_RBPL_POOL 886441e143eSChristoph Lameter cpuaddr = pci_pool_alloc(he_dev->rbpl_pool, GFP_KERNEL|GFP_DMA, &dma_handle); 8871da177e4SLinus Torvalds if (cpuaddr == NULL) 8881da177e4SLinus Torvalds return -ENOMEM; 8891da177e4SLinus Torvalds #else 8901da177e4SLinus Torvalds cpuaddr = he_dev->rbpl_pages + (i * CONFIG_RBPL_BUFSIZE); 8911da177e4SLinus Torvalds dma_handle = he_dev->rbpl_pages_phys + (i * CONFIG_RBPL_BUFSIZE); 8921da177e4SLinus Torvalds #endif 8931da177e4SLinus Torvalds 8941da177e4SLinus Torvalds he_dev->rbpl_virt[i].virt = cpuaddr; 8951da177e4SLinus Torvalds he_dev->rbpl_base[i].status = RBP_LOANED | (i << RBP_INDEX_OFF); 8961da177e4SLinus Torvalds he_dev->rbpl_base[i].phys = dma_handle; 8971da177e4SLinus Torvalds } 8981da177e4SLinus Torvalds he_dev->rbpl_tail = &he_dev->rbpl_base[CONFIG_RBPL_SIZE - 1]; 8991da177e4SLinus Torvalds 9001da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbpl_phys, G0_RBPL_S + (group * 32)); 9011da177e4SLinus Torvalds he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), 9021da177e4SLinus Torvalds G0_RBPL_T + (group * 32)); 9031da177e4SLinus Torvalds he_writel(he_dev, CONFIG_RBPL_BUFSIZE/4, 9041da177e4SLinus Torvalds G0_RBPL_BS + (group * 32)); 9051da177e4SLinus Torvalds he_writel(he_dev, 9061da177e4SLinus Torvalds RBP_THRESH(CONFIG_RBPL_THRESH) | 9071da177e4SLinus Torvalds RBP_QSIZE(CONFIG_RBPL_SIZE - 1) | 9081da177e4SLinus Torvalds RBP_INT_ENB, 9091da177e4SLinus Torvalds G0_RBPL_QI + (group * 32)); 9101da177e4SLinus Torvalds 9111da177e4SLinus Torvalds /* rx buffer ready queue */ 9121da177e4SLinus Torvalds 9131da177e4SLinus Torvalds he_dev->rbrq_base = pci_alloc_consistent(he_dev->pci_dev, 9141da177e4SLinus Torvalds CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), &he_dev->rbrq_phys); 9151da177e4SLinus Torvalds if (he_dev->rbrq_base == NULL) { 9161da177e4SLinus Torvalds hprintk("failed to allocate rbrq\n"); 9171da177e4SLinus Torvalds return -ENOMEM; 9181da177e4SLinus Torvalds } 9191da177e4SLinus Torvalds memset(he_dev->rbrq_base, 0, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq)); 9201da177e4SLinus Torvalds 9211da177e4SLinus Torvalds he_dev->rbrq_head = he_dev->rbrq_base; 9221da177e4SLinus Torvalds he_writel(he_dev, he_dev->rbrq_phys, G0_RBRQ_ST + (group * 16)); 9231da177e4SLinus Torvalds he_writel(he_dev, 0, G0_RBRQ_H + (group * 16)); 9241da177e4SLinus Torvalds he_writel(he_dev, 9251da177e4SLinus Torvalds RBRQ_THRESH(CONFIG_RBRQ_THRESH) | RBRQ_SIZE(CONFIG_RBRQ_SIZE - 1), 9261da177e4SLinus Torvalds G0_RBRQ_Q + (group * 16)); 9271da177e4SLinus Torvalds if (irq_coalesce) { 9281da177e4SLinus Torvalds hprintk("coalescing interrupts\n"); 9291da177e4SLinus Torvalds he_writel(he_dev, RBRQ_TIME(768) | RBRQ_COUNT(7), 9301da177e4SLinus Torvalds G0_RBRQ_I + (group * 16)); 9311da177e4SLinus Torvalds } else 9321da177e4SLinus Torvalds he_writel(he_dev, RBRQ_TIME(0) | RBRQ_COUNT(1), 9331da177e4SLinus Torvalds G0_RBRQ_I + (group * 16)); 9341da177e4SLinus Torvalds 9351da177e4SLinus Torvalds /* tx buffer ready queue */ 9361da177e4SLinus Torvalds 9371da177e4SLinus Torvalds he_dev->tbrq_base = pci_alloc_consistent(he_dev->pci_dev, 9381da177e4SLinus Torvalds CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), &he_dev->tbrq_phys); 9391da177e4SLinus Torvalds if (he_dev->tbrq_base == NULL) { 9401da177e4SLinus Torvalds hprintk("failed to allocate tbrq\n"); 9411da177e4SLinus Torvalds return -ENOMEM; 9421da177e4SLinus Torvalds } 9431da177e4SLinus Torvalds memset(he_dev->tbrq_base, 0, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq)); 9441da177e4SLinus Torvalds 9451da177e4SLinus Torvalds he_dev->tbrq_head = he_dev->tbrq_base; 9461da177e4SLinus Torvalds 9471da177e4SLinus Torvalds he_writel(he_dev, he_dev->tbrq_phys, G0_TBRQ_B_T + (group * 16)); 9481da177e4SLinus Torvalds he_writel(he_dev, 0, G0_TBRQ_H + (group * 16)); 9491da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TBRQ_SIZE - 1, G0_TBRQ_S + (group * 16)); 9501da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TBRQ_THRESH, G0_TBRQ_THRESH + (group * 16)); 9511da177e4SLinus Torvalds 9521da177e4SLinus Torvalds return 0; 9531da177e4SLinus Torvalds } 9541da177e4SLinus Torvalds 9555b7c714eSRoland Dreier static int __devinit 9561da177e4SLinus Torvalds he_init_irq(struct he_dev *he_dev) 9571da177e4SLinus Torvalds { 9581da177e4SLinus Torvalds int i; 9591da177e4SLinus Torvalds 9601da177e4SLinus Torvalds /* 2.9.3.5 tail offset for each interrupt queue is located after the 9611da177e4SLinus Torvalds end of the interrupt queue */ 9621da177e4SLinus Torvalds 9631da177e4SLinus Torvalds he_dev->irq_base = pci_alloc_consistent(he_dev->pci_dev, 9641da177e4SLinus Torvalds (CONFIG_IRQ_SIZE+1) * sizeof(struct he_irq), &he_dev->irq_phys); 9651da177e4SLinus Torvalds if (he_dev->irq_base == NULL) { 9661da177e4SLinus Torvalds hprintk("failed to allocate irq\n"); 9671da177e4SLinus Torvalds return -ENOMEM; 9681da177e4SLinus Torvalds } 9691da177e4SLinus Torvalds he_dev->irq_tailoffset = (unsigned *) 9701da177e4SLinus Torvalds &he_dev->irq_base[CONFIG_IRQ_SIZE]; 9711da177e4SLinus Torvalds *he_dev->irq_tailoffset = 0; 9721da177e4SLinus Torvalds he_dev->irq_head = he_dev->irq_base; 9731da177e4SLinus Torvalds he_dev->irq_tail = he_dev->irq_base; 9741da177e4SLinus Torvalds 9751da177e4SLinus Torvalds for (i = 0; i < CONFIG_IRQ_SIZE; ++i) 9761da177e4SLinus Torvalds he_dev->irq_base[i].isw = ITYPE_INVALID; 9771da177e4SLinus Torvalds 9781da177e4SLinus Torvalds he_writel(he_dev, he_dev->irq_phys, IRQ0_BASE); 9791da177e4SLinus Torvalds he_writel(he_dev, 9801da177e4SLinus Torvalds IRQ_SIZE(CONFIG_IRQ_SIZE) | IRQ_THRESH(CONFIG_IRQ_THRESH), 9811da177e4SLinus Torvalds IRQ0_HEAD); 9821da177e4SLinus Torvalds he_writel(he_dev, IRQ_INT_A | IRQ_TYPE_LINE, IRQ0_CNTL); 9831da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ0_DATA); 9841da177e4SLinus Torvalds 9851da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_BASE); 9861da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_HEAD); 9871da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_CNTL); 9881da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ1_DATA); 9891da177e4SLinus Torvalds 9901da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_BASE); 9911da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_HEAD); 9921da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_CNTL); 9931da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ2_DATA); 9941da177e4SLinus Torvalds 9951da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_BASE); 9961da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_HEAD); 9971da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_CNTL); 9981da177e4SLinus Torvalds he_writel(he_dev, 0x0, IRQ3_DATA); 9991da177e4SLinus Torvalds 10001da177e4SLinus Torvalds /* 2.9.3.2 interrupt queue mapping registers */ 10011da177e4SLinus Torvalds 10021da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_10_MAP); 10031da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_32_MAP); 10041da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_54_MAP); 10051da177e4SLinus Torvalds he_writel(he_dev, 0x0, GRP_76_MAP); 10061da177e4SLinus Torvalds 1007dace1453SThomas Gleixner if (request_irq(he_dev->pci_dev->irq, he_irq_handler, IRQF_DISABLED|IRQF_SHARED, DEV_LABEL, he_dev)) { 10081da177e4SLinus Torvalds hprintk("irq %d already in use\n", he_dev->pci_dev->irq); 10091da177e4SLinus Torvalds return -EINVAL; 10101da177e4SLinus Torvalds } 10111da177e4SLinus Torvalds 10121da177e4SLinus Torvalds he_dev->irq = he_dev->pci_dev->irq; 10131da177e4SLinus Torvalds 10141da177e4SLinus Torvalds return 0; 10151da177e4SLinus Torvalds } 10161da177e4SLinus Torvalds 1017d17f0865SChas Williams static int __devinit 10181da177e4SLinus Torvalds he_start(struct atm_dev *dev) 10191da177e4SLinus Torvalds { 10201da177e4SLinus Torvalds struct he_dev *he_dev; 10211da177e4SLinus Torvalds struct pci_dev *pci_dev; 10221da177e4SLinus Torvalds unsigned long membase; 10231da177e4SLinus Torvalds 10241da177e4SLinus Torvalds u16 command; 10251da177e4SLinus Torvalds u32 gen_cntl_0, host_cntl, lb_swap; 10261da177e4SLinus Torvalds u8 cache_size, timer; 10271da177e4SLinus Torvalds 10281da177e4SLinus Torvalds unsigned err; 10291da177e4SLinus Torvalds unsigned int status, reg; 10301da177e4SLinus Torvalds int i, group; 10311da177e4SLinus Torvalds 10321da177e4SLinus Torvalds he_dev = HE_DEV(dev); 10331da177e4SLinus Torvalds pci_dev = he_dev->pci_dev; 10341da177e4SLinus Torvalds 10351da177e4SLinus Torvalds membase = pci_resource_start(pci_dev, 0); 10361da177e4SLinus Torvalds HPRINTK("membase = 0x%lx irq = %d.\n", membase, pci_dev->irq); 10371da177e4SLinus Torvalds 10381da177e4SLinus Torvalds /* 10391da177e4SLinus Torvalds * pci bus controller initialization 10401da177e4SLinus Torvalds */ 10411da177e4SLinus Torvalds 10421da177e4SLinus Torvalds /* 4.3 pci bus controller-specific initialization */ 10431da177e4SLinus Torvalds if (pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0) != 0) { 10441da177e4SLinus Torvalds hprintk("can't read GEN_CNTL_0\n"); 10451da177e4SLinus Torvalds return -EINVAL; 10461da177e4SLinus Torvalds } 10471da177e4SLinus Torvalds gen_cntl_0 |= (MRL_ENB | MRM_ENB | IGNORE_TIMEOUT); 10481da177e4SLinus Torvalds if (pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0) != 0) { 10491da177e4SLinus Torvalds hprintk("can't write GEN_CNTL_0.\n"); 10501da177e4SLinus Torvalds return -EINVAL; 10511da177e4SLinus Torvalds } 10521da177e4SLinus Torvalds 10531da177e4SLinus Torvalds if (pci_read_config_word(pci_dev, PCI_COMMAND, &command) != 0) { 10541da177e4SLinus Torvalds hprintk("can't read PCI_COMMAND.\n"); 10551da177e4SLinus Torvalds return -EINVAL; 10561da177e4SLinus Torvalds } 10571da177e4SLinus Torvalds 10581da177e4SLinus Torvalds command |= (PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE); 10591da177e4SLinus Torvalds if (pci_write_config_word(pci_dev, PCI_COMMAND, command) != 0) { 10601da177e4SLinus Torvalds hprintk("can't enable memory.\n"); 10611da177e4SLinus Torvalds return -EINVAL; 10621da177e4SLinus Torvalds } 10631da177e4SLinus Torvalds 10641da177e4SLinus Torvalds if (pci_read_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, &cache_size)) { 10651da177e4SLinus Torvalds hprintk("can't read cache line size?\n"); 10661da177e4SLinus Torvalds return -EINVAL; 10671da177e4SLinus Torvalds } 10681da177e4SLinus Torvalds 10691da177e4SLinus Torvalds if (cache_size < 16) { 10701da177e4SLinus Torvalds cache_size = 16; 10711da177e4SLinus Torvalds if (pci_write_config_byte(pci_dev, PCI_CACHE_LINE_SIZE, cache_size)) 10721da177e4SLinus Torvalds hprintk("can't set cache line size to %d\n", cache_size); 10731da177e4SLinus Torvalds } 10741da177e4SLinus Torvalds 10751da177e4SLinus Torvalds if (pci_read_config_byte(pci_dev, PCI_LATENCY_TIMER, &timer)) { 10761da177e4SLinus Torvalds hprintk("can't read latency timer?\n"); 10771da177e4SLinus Torvalds return -EINVAL; 10781da177e4SLinus Torvalds } 10791da177e4SLinus Torvalds 10801da177e4SLinus Torvalds /* from table 3.9 10811da177e4SLinus Torvalds * 10821da177e4SLinus Torvalds * LAT_TIMER = 1 + AVG_LAT + BURST_SIZE/BUS_SIZE 10831da177e4SLinus Torvalds * 10841da177e4SLinus Torvalds * AVG_LAT: The average first data read/write latency [maximum 16 clock cycles] 10851da177e4SLinus Torvalds * BURST_SIZE: 1536 bytes (read) for 622, 768 bytes (read) for 155 [192 clock cycles] 10861da177e4SLinus Torvalds * 10871da177e4SLinus Torvalds */ 10881da177e4SLinus Torvalds #define LAT_TIMER 209 10891da177e4SLinus Torvalds if (timer < LAT_TIMER) { 10901da177e4SLinus Torvalds HPRINTK("latency timer was %d, setting to %d\n", timer, LAT_TIMER); 10911da177e4SLinus Torvalds timer = LAT_TIMER; 10921da177e4SLinus Torvalds if (pci_write_config_byte(pci_dev, PCI_LATENCY_TIMER, timer)) 10931da177e4SLinus Torvalds hprintk("can't set latency timer to %d\n", timer); 10941da177e4SLinus Torvalds } 10951da177e4SLinus Torvalds 10961da177e4SLinus Torvalds if (!(he_dev->membase = ioremap(membase, HE_REGMAP_SIZE))) { 10971da177e4SLinus Torvalds hprintk("can't set up page mapping\n"); 10981da177e4SLinus Torvalds return -EINVAL; 10991da177e4SLinus Torvalds } 11001da177e4SLinus Torvalds 11011da177e4SLinus Torvalds /* 4.4 card reset */ 11021da177e4SLinus Torvalds he_writel(he_dev, 0x0, RESET_CNTL); 11031da177e4SLinus Torvalds he_writel(he_dev, 0xff, RESET_CNTL); 11041da177e4SLinus Torvalds 11051da177e4SLinus Torvalds udelay(16*1000); /* 16 ms */ 11061da177e4SLinus Torvalds status = he_readl(he_dev, RESET_CNTL); 11071da177e4SLinus Torvalds if ((status & BOARD_RST_STATUS) == 0) { 11081da177e4SLinus Torvalds hprintk("reset failed\n"); 11091da177e4SLinus Torvalds return -EINVAL; 11101da177e4SLinus Torvalds } 11111da177e4SLinus Torvalds 11121da177e4SLinus Torvalds /* 4.5 set bus width */ 11131da177e4SLinus Torvalds host_cntl = he_readl(he_dev, HOST_CNTL); 11141da177e4SLinus Torvalds if (host_cntl & PCI_BUS_SIZE64) 11151da177e4SLinus Torvalds gen_cntl_0 |= ENBL_64; 11161da177e4SLinus Torvalds else 11171da177e4SLinus Torvalds gen_cntl_0 &= ~ENBL_64; 11181da177e4SLinus Torvalds 11191da177e4SLinus Torvalds if (disable64 == 1) { 11201da177e4SLinus Torvalds hprintk("disabling 64-bit pci bus transfers\n"); 11211da177e4SLinus Torvalds gen_cntl_0 &= ~ENBL_64; 11221da177e4SLinus Torvalds } 11231da177e4SLinus Torvalds 11241da177e4SLinus Torvalds if (gen_cntl_0 & ENBL_64) 11251da177e4SLinus Torvalds hprintk("64-bit transfers enabled\n"); 11261da177e4SLinus Torvalds 11271da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 11281da177e4SLinus Torvalds 11291da177e4SLinus Torvalds /* 4.7 read prom contents */ 11301da177e4SLinus Torvalds for (i = 0; i < PROD_ID_LEN; ++i) 11311da177e4SLinus Torvalds he_dev->prod_id[i] = read_prom_byte(he_dev, PROD_ID + i); 11321da177e4SLinus Torvalds 11331da177e4SLinus Torvalds he_dev->media = read_prom_byte(he_dev, MEDIA); 11341da177e4SLinus Torvalds 11351da177e4SLinus Torvalds for (i = 0; i < 6; ++i) 11361da177e4SLinus Torvalds dev->esi[i] = read_prom_byte(he_dev, MAC_ADDR + i); 11371da177e4SLinus Torvalds 11381da177e4SLinus Torvalds hprintk("%s%s, %x:%x:%x:%x:%x:%x\n", 11391da177e4SLinus Torvalds he_dev->prod_id, 11401da177e4SLinus Torvalds he_dev->media & 0x40 ? "SM" : "MM", 11411da177e4SLinus Torvalds dev->esi[0], 11421da177e4SLinus Torvalds dev->esi[1], 11431da177e4SLinus Torvalds dev->esi[2], 11441da177e4SLinus Torvalds dev->esi[3], 11451da177e4SLinus Torvalds dev->esi[4], 11461da177e4SLinus Torvalds dev->esi[5]); 11471da177e4SLinus Torvalds he_dev->atm_dev->link_rate = he_is622(he_dev) ? 11481da177e4SLinus Torvalds ATM_OC12_PCR : ATM_OC3_PCR; 11491da177e4SLinus Torvalds 11501da177e4SLinus Torvalds /* 4.6 set host endianess */ 11511da177e4SLinus Torvalds lb_swap = he_readl(he_dev, LB_SWAP); 11521da177e4SLinus Torvalds if (he_is622(he_dev)) 11531da177e4SLinus Torvalds lb_swap &= ~XFER_SIZE; /* 4 cells */ 11541da177e4SLinus Torvalds else 11551da177e4SLinus Torvalds lb_swap |= XFER_SIZE; /* 8 cells */ 11561da177e4SLinus Torvalds #ifdef __BIG_ENDIAN 11571da177e4SLinus Torvalds lb_swap |= DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST; 11581da177e4SLinus Torvalds #else 11591da177e4SLinus Torvalds lb_swap &= ~(DESC_WR_SWAP | INTR_SWAP | BIG_ENDIAN_HOST | 11601da177e4SLinus Torvalds DATA_WR_SWAP | DATA_RD_SWAP | DESC_RD_SWAP); 11611da177e4SLinus Torvalds #endif /* __BIG_ENDIAN */ 11621da177e4SLinus Torvalds he_writel(he_dev, lb_swap, LB_SWAP); 11631da177e4SLinus Torvalds 11641da177e4SLinus Torvalds /* 4.8 sdram controller initialization */ 11651da177e4SLinus Torvalds he_writel(he_dev, he_is622(he_dev) ? LB_64_ENB : 0x0, SDRAM_CTL); 11661da177e4SLinus Torvalds 11671da177e4SLinus Torvalds /* 4.9 initialize rnum value */ 11681da177e4SLinus Torvalds lb_swap |= SWAP_RNUM_MAX(0xf); 11691da177e4SLinus Torvalds he_writel(he_dev, lb_swap, LB_SWAP); 11701da177e4SLinus Torvalds 11711da177e4SLinus Torvalds /* 4.10 initialize the interrupt queues */ 11721da177e4SLinus Torvalds if ((err = he_init_irq(he_dev)) != 0) 11731da177e4SLinus Torvalds return err; 11741da177e4SLinus Torvalds 11751da177e4SLinus Torvalds /* 4.11 enable pci bus controller state machines */ 11761da177e4SLinus Torvalds host_cntl |= (OUTFF_ENB | CMDFF_ENB | 11771da177e4SLinus Torvalds QUICK_RD_RETRY | QUICK_WR_RETRY | PERR_INT_ENB); 11781da177e4SLinus Torvalds he_writel(he_dev, host_cntl, HOST_CNTL); 11791da177e4SLinus Torvalds 11801da177e4SLinus Torvalds gen_cntl_0 |= INT_PROC_ENBL|INIT_ENB; 11811da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 11821da177e4SLinus Torvalds 11831da177e4SLinus Torvalds /* 11841da177e4SLinus Torvalds * atm network controller initialization 11851da177e4SLinus Torvalds */ 11861da177e4SLinus Torvalds 11871da177e4SLinus Torvalds /* 5.1.1 generic configuration state */ 11881da177e4SLinus Torvalds 11891da177e4SLinus Torvalds /* 11901da177e4SLinus Torvalds * local (cell) buffer memory map 11911da177e4SLinus Torvalds * 11921da177e4SLinus Torvalds * HE155 HE622 11931da177e4SLinus Torvalds * 11941da177e4SLinus Torvalds * 0 ____________1023 bytes 0 _______________________2047 bytes 11951da177e4SLinus Torvalds * | | | | | 11961da177e4SLinus Torvalds * | utility | | rx0 | | 11971da177e4SLinus Torvalds * 5|____________| 255|___________________| u | 11981da177e4SLinus Torvalds * 6| | 256| | t | 11991da177e4SLinus Torvalds * | | | | i | 12001da177e4SLinus Torvalds * | rx0 | row | tx | l | 12011da177e4SLinus Torvalds * | | | | i | 12021da177e4SLinus Torvalds * | | 767|___________________| t | 12031da177e4SLinus Torvalds * 517|____________| 768| | y | 12041da177e4SLinus Torvalds * row 518| | | rx1 | | 12051da177e4SLinus Torvalds * | | 1023|___________________|___| 12061da177e4SLinus Torvalds * | | 12071da177e4SLinus Torvalds * | tx | 12081da177e4SLinus Torvalds * | | 12091da177e4SLinus Torvalds * | | 12101da177e4SLinus Torvalds * 1535|____________| 12111da177e4SLinus Torvalds * 1536| | 12121da177e4SLinus Torvalds * | rx1 | 12131da177e4SLinus Torvalds * 2047|____________| 12141da177e4SLinus Torvalds * 12151da177e4SLinus Torvalds */ 12161da177e4SLinus Torvalds 12171da177e4SLinus Torvalds /* total 4096 connections */ 12181da177e4SLinus Torvalds he_dev->vcibits = CONFIG_DEFAULT_VCIBITS; 12191da177e4SLinus Torvalds he_dev->vpibits = CONFIG_DEFAULT_VPIBITS; 12201da177e4SLinus Torvalds 12211da177e4SLinus Torvalds if (nvpibits != -1 && nvcibits != -1 && nvpibits+nvcibits != HE_MAXCIDBITS) { 12221da177e4SLinus Torvalds hprintk("nvpibits + nvcibits != %d\n", HE_MAXCIDBITS); 12231da177e4SLinus Torvalds return -ENODEV; 12241da177e4SLinus Torvalds } 12251da177e4SLinus Torvalds 12261da177e4SLinus Torvalds if (nvpibits != -1) { 12271da177e4SLinus Torvalds he_dev->vpibits = nvpibits; 12281da177e4SLinus Torvalds he_dev->vcibits = HE_MAXCIDBITS - nvpibits; 12291da177e4SLinus Torvalds } 12301da177e4SLinus Torvalds 12311da177e4SLinus Torvalds if (nvcibits != -1) { 12321da177e4SLinus Torvalds he_dev->vcibits = nvcibits; 12331da177e4SLinus Torvalds he_dev->vpibits = HE_MAXCIDBITS - nvcibits; 12341da177e4SLinus Torvalds } 12351da177e4SLinus Torvalds 12361da177e4SLinus Torvalds 12371da177e4SLinus Torvalds if (he_is622(he_dev)) { 12381da177e4SLinus Torvalds he_dev->cells_per_row = 40; 12391da177e4SLinus Torvalds he_dev->bytes_per_row = 2048; 12401da177e4SLinus Torvalds he_dev->r0_numrows = 256; 12411da177e4SLinus Torvalds he_dev->tx_numrows = 512; 12421da177e4SLinus Torvalds he_dev->r1_numrows = 256; 12431da177e4SLinus Torvalds he_dev->r0_startrow = 0; 12441da177e4SLinus Torvalds he_dev->tx_startrow = 256; 12451da177e4SLinus Torvalds he_dev->r1_startrow = 768; 12461da177e4SLinus Torvalds } else { 12471da177e4SLinus Torvalds he_dev->cells_per_row = 20; 12481da177e4SLinus Torvalds he_dev->bytes_per_row = 1024; 12491da177e4SLinus Torvalds he_dev->r0_numrows = 512; 12501da177e4SLinus Torvalds he_dev->tx_numrows = 1018; 12511da177e4SLinus Torvalds he_dev->r1_numrows = 512; 12521da177e4SLinus Torvalds he_dev->r0_startrow = 6; 12531da177e4SLinus Torvalds he_dev->tx_startrow = 518; 12541da177e4SLinus Torvalds he_dev->r1_startrow = 1536; 12551da177e4SLinus Torvalds } 12561da177e4SLinus Torvalds 12571da177e4SLinus Torvalds he_dev->cells_per_lbuf = 4; 12581da177e4SLinus Torvalds he_dev->buffer_limit = 4; 12591da177e4SLinus Torvalds he_dev->r0_numbuffs = he_dev->r0_numrows * 12601da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12611da177e4SLinus Torvalds if (he_dev->r0_numbuffs > 2560) 12621da177e4SLinus Torvalds he_dev->r0_numbuffs = 2560; 12631da177e4SLinus Torvalds 12641da177e4SLinus Torvalds he_dev->r1_numbuffs = he_dev->r1_numrows * 12651da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12661da177e4SLinus Torvalds if (he_dev->r1_numbuffs > 2560) 12671da177e4SLinus Torvalds he_dev->r1_numbuffs = 2560; 12681da177e4SLinus Torvalds 12691da177e4SLinus Torvalds he_dev->tx_numbuffs = he_dev->tx_numrows * 12701da177e4SLinus Torvalds he_dev->cells_per_row / he_dev->cells_per_lbuf; 12711da177e4SLinus Torvalds if (he_dev->tx_numbuffs > 5120) 12721da177e4SLinus Torvalds he_dev->tx_numbuffs = 5120; 12731da177e4SLinus Torvalds 12741da177e4SLinus Torvalds /* 5.1.2 configure hardware dependent registers */ 12751da177e4SLinus Torvalds 12761da177e4SLinus Torvalds he_writel(he_dev, 12771da177e4SLinus Torvalds SLICE_X(0x2) | ARB_RNUM_MAX(0xf) | TH_PRTY(0x3) | 12781da177e4SLinus Torvalds RH_PRTY(0x3) | TL_PRTY(0x2) | RL_PRTY(0x1) | 12791da177e4SLinus Torvalds (he_is622(he_dev) ? BUS_MULTI(0x28) : BUS_MULTI(0x46)) | 12801da177e4SLinus Torvalds (he_is622(he_dev) ? NET_PREF(0x50) : NET_PREF(0x8c)), 12811da177e4SLinus Torvalds LBARB); 12821da177e4SLinus Torvalds 12831da177e4SLinus Torvalds he_writel(he_dev, BANK_ON | 12841da177e4SLinus Torvalds (he_is622(he_dev) ? (REF_RATE(0x384) | WIDE_DATA) : REF_RATE(0x150)), 12851da177e4SLinus Torvalds SDRAMCON); 12861da177e4SLinus Torvalds 12871da177e4SLinus Torvalds he_writel(he_dev, 12881da177e4SLinus Torvalds (he_is622(he_dev) ? RM_BANK_WAIT(1) : RM_BANK_WAIT(0)) | 12891da177e4SLinus Torvalds RM_RW_WAIT(1), RCMCONFIG); 12901da177e4SLinus Torvalds he_writel(he_dev, 12911da177e4SLinus Torvalds (he_is622(he_dev) ? TM_BANK_WAIT(2) : TM_BANK_WAIT(1)) | 12921da177e4SLinus Torvalds TM_RW_WAIT(1), TCMCONFIG); 12931da177e4SLinus Torvalds 12941da177e4SLinus Torvalds he_writel(he_dev, he_dev->cells_per_lbuf * ATM_CELL_PAYLOAD, LB_CONFIG); 12951da177e4SLinus Torvalds 12961da177e4SLinus Torvalds he_writel(he_dev, 12971da177e4SLinus Torvalds (he_is622(he_dev) ? UT_RD_DELAY(8) : UT_RD_DELAY(0)) | 12981da177e4SLinus Torvalds (he_is622(he_dev) ? RC_UT_MODE(0) : RC_UT_MODE(1)) | 12991da177e4SLinus Torvalds RX_VALVP(he_dev->vpibits) | 13001da177e4SLinus Torvalds RX_VALVC(he_dev->vcibits), RC_CONFIG); 13011da177e4SLinus Torvalds 13021da177e4SLinus Torvalds he_writel(he_dev, DRF_THRESH(0x20) | 13031da177e4SLinus Torvalds (he_is622(he_dev) ? TX_UT_MODE(0) : TX_UT_MODE(1)) | 13041da177e4SLinus Torvalds TX_VCI_MASK(he_dev->vcibits) | 13051da177e4SLinus Torvalds LBFREE_CNT(he_dev->tx_numbuffs), TX_CONFIG); 13061da177e4SLinus Torvalds 13071da177e4SLinus Torvalds he_writel(he_dev, 0x0, TXAAL5_PROTO); 13081da177e4SLinus Torvalds 13091da177e4SLinus Torvalds he_writel(he_dev, PHY_INT_ENB | 13101da177e4SLinus Torvalds (he_is622(he_dev) ? PTMR_PRE(67 - 1) : PTMR_PRE(50 - 1)), 13111da177e4SLinus Torvalds RH_CONFIG); 13121da177e4SLinus Torvalds 13131da177e4SLinus Torvalds /* 5.1.3 initialize connection memory */ 13141da177e4SLinus Torvalds 13151da177e4SLinus Torvalds for (i = 0; i < TCM_MEM_SIZE; ++i) 13161da177e4SLinus Torvalds he_writel_tcm(he_dev, 0, i); 13171da177e4SLinus Torvalds 13181da177e4SLinus Torvalds for (i = 0; i < RCM_MEM_SIZE; ++i) 13191da177e4SLinus Torvalds he_writel_rcm(he_dev, 0, i); 13201da177e4SLinus Torvalds 13211da177e4SLinus Torvalds /* 13221da177e4SLinus Torvalds * transmit connection memory map 13231da177e4SLinus Torvalds * 13241da177e4SLinus Torvalds * tx memory 13251da177e4SLinus Torvalds * 0x0 ___________________ 13261da177e4SLinus Torvalds * | | 13271da177e4SLinus Torvalds * | | 13281da177e4SLinus Torvalds * | TSRa | 13291da177e4SLinus Torvalds * | | 13301da177e4SLinus Torvalds * | | 13311da177e4SLinus Torvalds * 0x8000|___________________| 13321da177e4SLinus Torvalds * | | 13331da177e4SLinus Torvalds * | TSRb | 13341da177e4SLinus Torvalds * 0xc000|___________________| 13351da177e4SLinus Torvalds * | | 13361da177e4SLinus Torvalds * | TSRc | 13371da177e4SLinus Torvalds * 0xe000|___________________| 13381da177e4SLinus Torvalds * | TSRd | 13391da177e4SLinus Torvalds * 0xf000|___________________| 13401da177e4SLinus Torvalds * | tmABR | 13411da177e4SLinus Torvalds * 0x10000|___________________| 13421da177e4SLinus Torvalds * | | 13431da177e4SLinus Torvalds * | tmTPD | 13441da177e4SLinus Torvalds * |___________________| 13451da177e4SLinus Torvalds * | | 13461da177e4SLinus Torvalds * .... 13471da177e4SLinus Torvalds * 0x1ffff|___________________| 13481da177e4SLinus Torvalds * 13491da177e4SLinus Torvalds * 13501da177e4SLinus Torvalds */ 13511da177e4SLinus Torvalds 13521da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRB, TSRB_BA); 13531da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRC, TSRC_BA); 13541da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TSRD, TSRD_BA); 13551da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TMABR, TMABR_BA); 13561da177e4SLinus Torvalds he_writel(he_dev, CONFIG_TPDBA, TPD_BA); 13571da177e4SLinus Torvalds 13581da177e4SLinus Torvalds 13591da177e4SLinus Torvalds /* 13601da177e4SLinus Torvalds * receive connection memory map 13611da177e4SLinus Torvalds * 13621da177e4SLinus Torvalds * 0x0 ___________________ 13631da177e4SLinus Torvalds * | | 13641da177e4SLinus Torvalds * | | 13651da177e4SLinus Torvalds * | RSRa | 13661da177e4SLinus Torvalds * | | 13671da177e4SLinus Torvalds * | | 13681da177e4SLinus Torvalds * 0x8000|___________________| 13691da177e4SLinus Torvalds * | | 13701da177e4SLinus Torvalds * | rx0/1 | 13711da177e4SLinus Torvalds * | LBM | link lists of local 13721da177e4SLinus Torvalds * | tx | buffer memory 13731da177e4SLinus Torvalds * | | 13741da177e4SLinus Torvalds * 0xd000|___________________| 13751da177e4SLinus Torvalds * | | 13761da177e4SLinus Torvalds * | rmABR | 13771da177e4SLinus Torvalds * 0xe000|___________________| 13781da177e4SLinus Torvalds * | | 13791da177e4SLinus Torvalds * | RSRb | 13801da177e4SLinus Torvalds * |___________________| 13811da177e4SLinus Torvalds * | | 13821da177e4SLinus Torvalds * .... 13831da177e4SLinus Torvalds * 0xffff|___________________| 13841da177e4SLinus Torvalds */ 13851da177e4SLinus Torvalds 13861da177e4SLinus Torvalds he_writel(he_dev, 0x08000, RCMLBM_BA); 13871da177e4SLinus Torvalds he_writel(he_dev, 0x0e000, RCMRSRB_BA); 13881da177e4SLinus Torvalds he_writel(he_dev, 0x0d800, RCMABR_BA); 13891da177e4SLinus Torvalds 13901da177e4SLinus Torvalds /* 5.1.4 initialize local buffer free pools linked lists */ 13911da177e4SLinus Torvalds 13921da177e4SLinus Torvalds he_init_rx_lbfp0(he_dev); 13931da177e4SLinus Torvalds he_init_rx_lbfp1(he_dev); 13941da177e4SLinus Torvalds 13951da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_H); 13961da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_T); 13971da177e4SLinus Torvalds he_writel(he_dev, 0x0, RLBC_H2); 13981da177e4SLinus Torvalds 13991da177e4SLinus Torvalds he_writel(he_dev, 512, RXTHRSH); /* 10% of r0+r1 buffers */ 14001da177e4SLinus Torvalds he_writel(he_dev, 256, LITHRSH); /* 5% of r0+r1 buffers */ 14011da177e4SLinus Torvalds 14021da177e4SLinus Torvalds he_init_tx_lbfp(he_dev); 14031da177e4SLinus Torvalds 14041da177e4SLinus Torvalds he_writel(he_dev, he_is622(he_dev) ? 0x104780 : 0x800, UBUFF_BA); 14051da177e4SLinus Torvalds 14061da177e4SLinus Torvalds /* 5.1.5 initialize intermediate receive queues */ 14071da177e4SLinus Torvalds 14081da177e4SLinus Torvalds if (he_is622(he_dev)) { 14091da177e4SLinus Torvalds he_writel(he_dev, 0x000f, G0_INMQ_S); 14101da177e4SLinus Torvalds he_writel(he_dev, 0x200f, G0_INMQ_L); 14111da177e4SLinus Torvalds 14121da177e4SLinus Torvalds he_writel(he_dev, 0x001f, G1_INMQ_S); 14131da177e4SLinus Torvalds he_writel(he_dev, 0x201f, G1_INMQ_L); 14141da177e4SLinus Torvalds 14151da177e4SLinus Torvalds he_writel(he_dev, 0x002f, G2_INMQ_S); 14161da177e4SLinus Torvalds he_writel(he_dev, 0x202f, G2_INMQ_L); 14171da177e4SLinus Torvalds 14181da177e4SLinus Torvalds he_writel(he_dev, 0x003f, G3_INMQ_S); 14191da177e4SLinus Torvalds he_writel(he_dev, 0x203f, G3_INMQ_L); 14201da177e4SLinus Torvalds 14211da177e4SLinus Torvalds he_writel(he_dev, 0x004f, G4_INMQ_S); 14221da177e4SLinus Torvalds he_writel(he_dev, 0x204f, G4_INMQ_L); 14231da177e4SLinus Torvalds 14241da177e4SLinus Torvalds he_writel(he_dev, 0x005f, G5_INMQ_S); 14251da177e4SLinus Torvalds he_writel(he_dev, 0x205f, G5_INMQ_L); 14261da177e4SLinus Torvalds 14271da177e4SLinus Torvalds he_writel(he_dev, 0x006f, G6_INMQ_S); 14281da177e4SLinus Torvalds he_writel(he_dev, 0x206f, G6_INMQ_L); 14291da177e4SLinus Torvalds 14301da177e4SLinus Torvalds he_writel(he_dev, 0x007f, G7_INMQ_S); 14311da177e4SLinus Torvalds he_writel(he_dev, 0x207f, G7_INMQ_L); 14321da177e4SLinus Torvalds } else { 14331da177e4SLinus Torvalds he_writel(he_dev, 0x0000, G0_INMQ_S); 14341da177e4SLinus Torvalds he_writel(he_dev, 0x0008, G0_INMQ_L); 14351da177e4SLinus Torvalds 14361da177e4SLinus Torvalds he_writel(he_dev, 0x0001, G1_INMQ_S); 14371da177e4SLinus Torvalds he_writel(he_dev, 0x0009, G1_INMQ_L); 14381da177e4SLinus Torvalds 14391da177e4SLinus Torvalds he_writel(he_dev, 0x0002, G2_INMQ_S); 14401da177e4SLinus Torvalds he_writel(he_dev, 0x000a, G2_INMQ_L); 14411da177e4SLinus Torvalds 14421da177e4SLinus Torvalds he_writel(he_dev, 0x0003, G3_INMQ_S); 14431da177e4SLinus Torvalds he_writel(he_dev, 0x000b, G3_INMQ_L); 14441da177e4SLinus Torvalds 14451da177e4SLinus Torvalds he_writel(he_dev, 0x0004, G4_INMQ_S); 14461da177e4SLinus Torvalds he_writel(he_dev, 0x000c, G4_INMQ_L); 14471da177e4SLinus Torvalds 14481da177e4SLinus Torvalds he_writel(he_dev, 0x0005, G5_INMQ_S); 14491da177e4SLinus Torvalds he_writel(he_dev, 0x000d, G5_INMQ_L); 14501da177e4SLinus Torvalds 14511da177e4SLinus Torvalds he_writel(he_dev, 0x0006, G6_INMQ_S); 14521da177e4SLinus Torvalds he_writel(he_dev, 0x000e, G6_INMQ_L); 14531da177e4SLinus Torvalds 14541da177e4SLinus Torvalds he_writel(he_dev, 0x0007, G7_INMQ_S); 14551da177e4SLinus Torvalds he_writel(he_dev, 0x000f, G7_INMQ_L); 14561da177e4SLinus Torvalds } 14571da177e4SLinus Torvalds 14581da177e4SLinus Torvalds /* 5.1.6 application tunable parameters */ 14591da177e4SLinus Torvalds 14601da177e4SLinus Torvalds he_writel(he_dev, 0x0, MCC); 14611da177e4SLinus Torvalds he_writel(he_dev, 0x0, OEC); 14621da177e4SLinus Torvalds he_writel(he_dev, 0x0, DCC); 14631da177e4SLinus Torvalds he_writel(he_dev, 0x0, CEC); 14641da177e4SLinus Torvalds 14651da177e4SLinus Torvalds /* 5.1.7 cs block initialization */ 14661da177e4SLinus Torvalds 14671da177e4SLinus Torvalds he_init_cs_block(he_dev); 14681da177e4SLinus Torvalds 14691da177e4SLinus Torvalds /* 5.1.8 cs block connection memory initialization */ 14701da177e4SLinus Torvalds 14711da177e4SLinus Torvalds if (he_init_cs_block_rcm(he_dev) < 0) 14721da177e4SLinus Torvalds return -ENOMEM; 14731da177e4SLinus Torvalds 14741da177e4SLinus Torvalds /* 5.1.10 initialize host structures */ 14751da177e4SLinus Torvalds 14761da177e4SLinus Torvalds he_init_tpdrq(he_dev); 14771da177e4SLinus Torvalds 14781da177e4SLinus Torvalds #ifdef USE_TPD_POOL 14791da177e4SLinus Torvalds he_dev->tpd_pool = pci_pool_create("tpd", he_dev->pci_dev, 14801da177e4SLinus Torvalds sizeof(struct he_tpd), TPD_ALIGNMENT, 0); 14811da177e4SLinus Torvalds if (he_dev->tpd_pool == NULL) { 14821da177e4SLinus Torvalds hprintk("unable to create tpd pci_pool\n"); 14831da177e4SLinus Torvalds return -ENOMEM; 14841da177e4SLinus Torvalds } 14851da177e4SLinus Torvalds 14861da177e4SLinus Torvalds INIT_LIST_HEAD(&he_dev->outstanding_tpds); 14871da177e4SLinus Torvalds #else 14881da177e4SLinus Torvalds he_dev->tpd_base = (void *) pci_alloc_consistent(he_dev->pci_dev, 14891da177e4SLinus Torvalds CONFIG_NUMTPDS * sizeof(struct he_tpd), &he_dev->tpd_base_phys); 14901da177e4SLinus Torvalds if (!he_dev->tpd_base) 14911da177e4SLinus Torvalds return -ENOMEM; 14921da177e4SLinus Torvalds 14931da177e4SLinus Torvalds for (i = 0; i < CONFIG_NUMTPDS; ++i) { 14941da177e4SLinus Torvalds he_dev->tpd_base[i].status = (i << TPD_ADDR_SHIFT); 14951da177e4SLinus Torvalds he_dev->tpd_base[i].inuse = 0; 14961da177e4SLinus Torvalds } 14971da177e4SLinus Torvalds 14981da177e4SLinus Torvalds he_dev->tpd_head = he_dev->tpd_base; 14991da177e4SLinus Torvalds he_dev->tpd_end = &he_dev->tpd_base[CONFIG_NUMTPDS - 1]; 15001da177e4SLinus Torvalds #endif 15011da177e4SLinus Torvalds 15021da177e4SLinus Torvalds if (he_init_group(he_dev, 0) != 0) 15031da177e4SLinus Torvalds return -ENOMEM; 15041da177e4SLinus Torvalds 15051da177e4SLinus Torvalds for (group = 1; group < HE_NUM_GROUPS; ++group) { 15061da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_S + (group * 32)); 15071da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_T + (group * 32)); 15081da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPS_QI + (group * 32)); 15091da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 15101da177e4SLinus Torvalds G0_RBPS_BS + (group * 32)); 15111da177e4SLinus Torvalds 15121da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_S + (group * 32)); 15131da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_T + (group * 32)); 15141da177e4SLinus Torvalds he_writel(he_dev, RBP_THRESH(0x1) | RBP_QSIZE(0x0), 15151da177e4SLinus Torvalds G0_RBPL_QI + (group * 32)); 15161da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBPL_BS + (group * 32)); 15171da177e4SLinus Torvalds 15181da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_ST + (group * 16)); 15191da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_H + (group * 16)); 15201da177e4SLinus Torvalds he_writel(he_dev, RBRQ_THRESH(0x1) | RBRQ_SIZE(0x0), 15211da177e4SLinus Torvalds G0_RBRQ_Q + (group * 16)); 15221da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_RBRQ_I + (group * 16)); 15231da177e4SLinus Torvalds 15241da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_B_T + (group * 16)); 15251da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_H + (group * 16)); 15261da177e4SLinus Torvalds he_writel(he_dev, TBRQ_THRESH(0x1), 15271da177e4SLinus Torvalds G0_TBRQ_THRESH + (group * 16)); 15281da177e4SLinus Torvalds he_writel(he_dev, 0x0, G0_TBRQ_S + (group * 16)); 15291da177e4SLinus Torvalds } 15301da177e4SLinus Torvalds 15311da177e4SLinus Torvalds /* host status page */ 15321da177e4SLinus Torvalds 15331da177e4SLinus Torvalds he_dev->hsp = pci_alloc_consistent(he_dev->pci_dev, 15341da177e4SLinus Torvalds sizeof(struct he_hsp), &he_dev->hsp_phys); 15351da177e4SLinus Torvalds if (he_dev->hsp == NULL) { 15361da177e4SLinus Torvalds hprintk("failed to allocate host status page\n"); 15371da177e4SLinus Torvalds return -ENOMEM; 15381da177e4SLinus Torvalds } 15391da177e4SLinus Torvalds memset(he_dev->hsp, 0, sizeof(struct he_hsp)); 15401da177e4SLinus Torvalds he_writel(he_dev, he_dev->hsp_phys, HSP_BA); 15411da177e4SLinus Torvalds 15421da177e4SLinus Torvalds /* initialize framer */ 15431da177e4SLinus Torvalds 15441da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 1545059e3779SChas Williams if (he_isMM(he_dev)) 15461da177e4SLinus Torvalds suni_init(he_dev->atm_dev); 15471da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->start) 15481da177e4SLinus Torvalds he_dev->atm_dev->phy->start(he_dev->atm_dev); 15491da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 15501da177e4SLinus Torvalds 15511da177e4SLinus Torvalds if (sdh) { 15521da177e4SLinus Torvalds /* this really should be in suni.c but for now... */ 15531da177e4SLinus Torvalds int val; 15541da177e4SLinus Torvalds 15551da177e4SLinus Torvalds val = he_phy_get(he_dev->atm_dev, SUNI_TPOP_APM); 15561da177e4SLinus Torvalds val = (val & ~SUNI_TPOP_APM_S) | (SUNI_TPOP_S_SDH << SUNI_TPOP_APM_S_SHIFT); 15571da177e4SLinus Torvalds he_phy_put(he_dev->atm_dev, val, SUNI_TPOP_APM); 15581da177e4SLinus Torvalds } 15591da177e4SLinus Torvalds 15601da177e4SLinus Torvalds /* 5.1.12 enable transmit and receive */ 15611da177e4SLinus Torvalds 15621da177e4SLinus Torvalds reg = he_readl_mbox(he_dev, CS_ERCTL0); 15631da177e4SLinus Torvalds reg |= TX_ENABLE|ER_ENABLE; 15641da177e4SLinus Torvalds he_writel_mbox(he_dev, reg, CS_ERCTL0); 15651da177e4SLinus Torvalds 15661da177e4SLinus Torvalds reg = he_readl(he_dev, RC_CONFIG); 15671da177e4SLinus Torvalds reg |= RX_ENABLE; 15681da177e4SLinus Torvalds he_writel(he_dev, reg, RC_CONFIG); 15691da177e4SLinus Torvalds 15701da177e4SLinus Torvalds for (i = 0; i < HE_NUM_CS_STPER; ++i) { 15711da177e4SLinus Torvalds he_dev->cs_stper[i].inuse = 0; 15721da177e4SLinus Torvalds he_dev->cs_stper[i].pcr = -1; 15731da177e4SLinus Torvalds } 15741da177e4SLinus Torvalds he_dev->total_bw = 0; 15751da177e4SLinus Torvalds 15761da177e4SLinus Torvalds 15771da177e4SLinus Torvalds /* atm linux initialization */ 15781da177e4SLinus Torvalds 15791da177e4SLinus Torvalds he_dev->atm_dev->ci_range.vpi_bits = he_dev->vpibits; 15801da177e4SLinus Torvalds he_dev->atm_dev->ci_range.vci_bits = he_dev->vcibits; 15811da177e4SLinus Torvalds 15821da177e4SLinus Torvalds he_dev->irq_peak = 0; 15831da177e4SLinus Torvalds he_dev->rbrq_peak = 0; 15841da177e4SLinus Torvalds he_dev->rbpl_peak = 0; 15851da177e4SLinus Torvalds he_dev->tbrq_peak = 0; 15861da177e4SLinus Torvalds 15871da177e4SLinus Torvalds HPRINTK("hell bent for leather!\n"); 15881da177e4SLinus Torvalds 15891da177e4SLinus Torvalds return 0; 15901da177e4SLinus Torvalds } 15911da177e4SLinus Torvalds 15921da177e4SLinus Torvalds static void 15931da177e4SLinus Torvalds he_stop(struct he_dev *he_dev) 15941da177e4SLinus Torvalds { 15951da177e4SLinus Torvalds u16 command; 15961da177e4SLinus Torvalds u32 gen_cntl_0, reg; 15971da177e4SLinus Torvalds struct pci_dev *pci_dev; 15981da177e4SLinus Torvalds 15991da177e4SLinus Torvalds pci_dev = he_dev->pci_dev; 16001da177e4SLinus Torvalds 16011da177e4SLinus Torvalds /* disable interrupts */ 16021da177e4SLinus Torvalds 16031da177e4SLinus Torvalds if (he_dev->membase) { 16041da177e4SLinus Torvalds pci_read_config_dword(pci_dev, GEN_CNTL_0, &gen_cntl_0); 16051da177e4SLinus Torvalds gen_cntl_0 &= ~(INT_PROC_ENBL | INIT_ENB); 16061da177e4SLinus Torvalds pci_write_config_dword(pci_dev, GEN_CNTL_0, gen_cntl_0); 16071da177e4SLinus Torvalds 16081da177e4SLinus Torvalds #ifdef USE_TASKLET 16091da177e4SLinus Torvalds tasklet_disable(&he_dev->tasklet); 16101da177e4SLinus Torvalds #endif 16111da177e4SLinus Torvalds 16121da177e4SLinus Torvalds /* disable recv and transmit */ 16131da177e4SLinus Torvalds 16141da177e4SLinus Torvalds reg = he_readl_mbox(he_dev, CS_ERCTL0); 16151da177e4SLinus Torvalds reg &= ~(TX_ENABLE|ER_ENABLE); 16161da177e4SLinus Torvalds he_writel_mbox(he_dev, reg, CS_ERCTL0); 16171da177e4SLinus Torvalds 16181da177e4SLinus Torvalds reg = he_readl(he_dev, RC_CONFIG); 16191da177e4SLinus Torvalds reg &= ~(RX_ENABLE); 16201da177e4SLinus Torvalds he_writel(he_dev, reg, RC_CONFIG); 16211da177e4SLinus Torvalds } 16221da177e4SLinus Torvalds 16231da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 16241da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->stop) 16251da177e4SLinus Torvalds he_dev->atm_dev->phy->stop(he_dev->atm_dev); 16261da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 16271da177e4SLinus Torvalds 16281da177e4SLinus Torvalds if (he_dev->irq) 16291da177e4SLinus Torvalds free_irq(he_dev->irq, he_dev); 16301da177e4SLinus Torvalds 16311da177e4SLinus Torvalds if (he_dev->irq_base) 16321da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, (CONFIG_IRQ_SIZE+1) 16331da177e4SLinus Torvalds * sizeof(struct he_irq), he_dev->irq_base, he_dev->irq_phys); 16341da177e4SLinus Torvalds 16351da177e4SLinus Torvalds if (he_dev->hsp) 16361da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, sizeof(struct he_hsp), 16371da177e4SLinus Torvalds he_dev->hsp, he_dev->hsp_phys); 16381da177e4SLinus Torvalds 16391da177e4SLinus Torvalds if (he_dev->rbpl_base) { 16401da177e4SLinus Torvalds #ifdef USE_RBPL_POOL 16417d1f8db4SJorge Boncompte int i; 16427d1f8db4SJorge Boncompte 16431da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPL_SIZE; ++i) { 16441da177e4SLinus Torvalds void *cpuaddr = he_dev->rbpl_virt[i].virt; 16451da177e4SLinus Torvalds dma_addr_t dma_handle = he_dev->rbpl_base[i].phys; 16461da177e4SLinus Torvalds 16471da177e4SLinus Torvalds pci_pool_free(he_dev->rbpl_pool, cpuaddr, dma_handle); 16481da177e4SLinus Torvalds } 16491da177e4SLinus Torvalds #else 16501da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE 16511da177e4SLinus Torvalds * CONFIG_RBPL_BUFSIZE, he_dev->rbpl_pages, he_dev->rbpl_pages_phys); 16521da177e4SLinus Torvalds #endif 16531da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBPL_SIZE 16541da177e4SLinus Torvalds * sizeof(struct he_rbp), he_dev->rbpl_base, he_dev->rbpl_phys); 16551da177e4SLinus Torvalds } 16561da177e4SLinus Torvalds 16571da177e4SLinus Torvalds #ifdef USE_RBPL_POOL 16581da177e4SLinus Torvalds if (he_dev->rbpl_pool) 16591da177e4SLinus Torvalds pci_pool_destroy(he_dev->rbpl_pool); 16601da177e4SLinus Torvalds #endif 16611da177e4SLinus Torvalds 16621da177e4SLinus Torvalds #ifdef USE_RBPS 16631da177e4SLinus Torvalds if (he_dev->rbps_base) { 16641da177e4SLinus Torvalds #ifdef USE_RBPS_POOL 16657d1f8db4SJorge Boncompte int i; 16667d1f8db4SJorge Boncompte 16671da177e4SLinus Torvalds for (i = 0; i < CONFIG_RBPS_SIZE; ++i) { 16681da177e4SLinus Torvalds void *cpuaddr = he_dev->rbps_virt[i].virt; 16691da177e4SLinus Torvalds dma_addr_t dma_handle = he_dev->rbps_base[i].phys; 16701da177e4SLinus Torvalds 16711da177e4SLinus Torvalds pci_pool_free(he_dev->rbps_pool, cpuaddr, dma_handle); 16721da177e4SLinus Torvalds } 16731da177e4SLinus Torvalds #else 16741da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBPS_SIZE 16751da177e4SLinus Torvalds * CONFIG_RBPS_BUFSIZE, he_dev->rbps_pages, he_dev->rbps_pages_phys); 16761da177e4SLinus Torvalds #endif 16771da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBPS_SIZE 16781da177e4SLinus Torvalds * sizeof(struct he_rbp), he_dev->rbps_base, he_dev->rbps_phys); 16791da177e4SLinus Torvalds } 16801da177e4SLinus Torvalds 16811da177e4SLinus Torvalds #ifdef USE_RBPS_POOL 16821da177e4SLinus Torvalds if (he_dev->rbps_pool) 16831da177e4SLinus Torvalds pci_pool_destroy(he_dev->rbps_pool); 16841da177e4SLinus Torvalds #endif 16851da177e4SLinus Torvalds 16861da177e4SLinus Torvalds #endif /* USE_RBPS */ 16871da177e4SLinus Torvalds 16881da177e4SLinus Torvalds if (he_dev->rbrq_base) 16891da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_RBRQ_SIZE * sizeof(struct he_rbrq), 16901da177e4SLinus Torvalds he_dev->rbrq_base, he_dev->rbrq_phys); 16911da177e4SLinus Torvalds 16921da177e4SLinus Torvalds if (he_dev->tbrq_base) 16931da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 16941da177e4SLinus Torvalds he_dev->tbrq_base, he_dev->tbrq_phys); 16951da177e4SLinus Torvalds 16961da177e4SLinus Torvalds if (he_dev->tpdrq_base) 16971da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_TBRQ_SIZE * sizeof(struct he_tbrq), 16981da177e4SLinus Torvalds he_dev->tpdrq_base, he_dev->tpdrq_phys); 16991da177e4SLinus Torvalds 17001da177e4SLinus Torvalds #ifdef USE_TPD_POOL 17011da177e4SLinus Torvalds if (he_dev->tpd_pool) 17021da177e4SLinus Torvalds pci_pool_destroy(he_dev->tpd_pool); 17031da177e4SLinus Torvalds #else 17041da177e4SLinus Torvalds if (he_dev->tpd_base) 17051da177e4SLinus Torvalds pci_free_consistent(he_dev->pci_dev, CONFIG_NUMTPDS * sizeof(struct he_tpd), 17061da177e4SLinus Torvalds he_dev->tpd_base, he_dev->tpd_base_phys); 17071da177e4SLinus Torvalds #endif 17081da177e4SLinus Torvalds 17091da177e4SLinus Torvalds if (he_dev->pci_dev) { 17101da177e4SLinus Torvalds pci_read_config_word(he_dev->pci_dev, PCI_COMMAND, &command); 17111da177e4SLinus Torvalds command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); 17121da177e4SLinus Torvalds pci_write_config_word(he_dev->pci_dev, PCI_COMMAND, command); 17131da177e4SLinus Torvalds } 17141da177e4SLinus Torvalds 17151da177e4SLinus Torvalds if (he_dev->membase) 17161da177e4SLinus Torvalds iounmap(he_dev->membase); 17171da177e4SLinus Torvalds } 17181da177e4SLinus Torvalds 17191da177e4SLinus Torvalds static struct he_tpd * 17201da177e4SLinus Torvalds __alloc_tpd(struct he_dev *he_dev) 17211da177e4SLinus Torvalds { 17221da177e4SLinus Torvalds #ifdef USE_TPD_POOL 17231da177e4SLinus Torvalds struct he_tpd *tpd; 17241da177e4SLinus Torvalds dma_addr_t dma_handle; 17251da177e4SLinus Torvalds 1726441e143eSChristoph Lameter tpd = pci_pool_alloc(he_dev->tpd_pool, GFP_ATOMIC|GFP_DMA, &dma_handle); 17271da177e4SLinus Torvalds if (tpd == NULL) 17281da177e4SLinus Torvalds return NULL; 17291da177e4SLinus Torvalds 17301da177e4SLinus Torvalds tpd->status = TPD_ADDR(dma_handle); 17311da177e4SLinus Torvalds tpd->reserved = 0; 17321da177e4SLinus Torvalds tpd->iovec[0].addr = 0; tpd->iovec[0].len = 0; 17331da177e4SLinus Torvalds tpd->iovec[1].addr = 0; tpd->iovec[1].len = 0; 17341da177e4SLinus Torvalds tpd->iovec[2].addr = 0; tpd->iovec[2].len = 0; 17351da177e4SLinus Torvalds 17361da177e4SLinus Torvalds return tpd; 17371da177e4SLinus Torvalds #else 17381da177e4SLinus Torvalds int i; 17391da177e4SLinus Torvalds 17401da177e4SLinus Torvalds for (i = 0; i < CONFIG_NUMTPDS; ++i) { 17411da177e4SLinus Torvalds ++he_dev->tpd_head; 17421da177e4SLinus Torvalds if (he_dev->tpd_head > he_dev->tpd_end) { 17431da177e4SLinus Torvalds he_dev->tpd_head = he_dev->tpd_base; 17441da177e4SLinus Torvalds } 17451da177e4SLinus Torvalds 17461da177e4SLinus Torvalds if (!he_dev->tpd_head->inuse) { 17471da177e4SLinus Torvalds he_dev->tpd_head->inuse = 1; 17481da177e4SLinus Torvalds he_dev->tpd_head->status &= TPD_MASK; 17491da177e4SLinus Torvalds he_dev->tpd_head->iovec[0].addr = 0; he_dev->tpd_head->iovec[0].len = 0; 17501da177e4SLinus Torvalds he_dev->tpd_head->iovec[1].addr = 0; he_dev->tpd_head->iovec[1].len = 0; 17511da177e4SLinus Torvalds he_dev->tpd_head->iovec[2].addr = 0; he_dev->tpd_head->iovec[2].len = 0; 17521da177e4SLinus Torvalds return he_dev->tpd_head; 17531da177e4SLinus Torvalds } 17541da177e4SLinus Torvalds } 17551da177e4SLinus Torvalds hprintk("out of tpds -- increase CONFIG_NUMTPDS (%d)\n", CONFIG_NUMTPDS); 17561da177e4SLinus Torvalds return NULL; 17571da177e4SLinus Torvalds #endif 17581da177e4SLinus Torvalds } 17591da177e4SLinus Torvalds 17601da177e4SLinus Torvalds #define AAL5_LEN(buf,len) \ 17611da177e4SLinus Torvalds ((((unsigned char *)(buf))[(len)-6] << 8) | \ 17621da177e4SLinus Torvalds (((unsigned char *)(buf))[(len)-5])) 17631da177e4SLinus Torvalds 17641da177e4SLinus Torvalds /* 2.10.1.2 receive 17651da177e4SLinus Torvalds * 17661da177e4SLinus Torvalds * aal5 packets can optionally return the tcp checksum in the lower 17671da177e4SLinus Torvalds * 16 bits of the crc (RSR0_TCP_CKSUM) 17681da177e4SLinus Torvalds */ 17691da177e4SLinus Torvalds 17701da177e4SLinus Torvalds #define TCP_CKSUM(buf,len) \ 17711da177e4SLinus Torvalds ((((unsigned char *)(buf))[(len)-2] << 8) | \ 17721da177e4SLinus Torvalds (((unsigned char *)(buf))[(len-1)])) 17731da177e4SLinus Torvalds 17741da177e4SLinus Torvalds static int 17751da177e4SLinus Torvalds he_service_rbrq(struct he_dev *he_dev, int group) 17761da177e4SLinus Torvalds { 17771da177e4SLinus Torvalds struct he_rbrq *rbrq_tail = (struct he_rbrq *) 17781da177e4SLinus Torvalds ((unsigned long)he_dev->rbrq_base | 17791da177e4SLinus Torvalds he_dev->hsp->group[group].rbrq_tail); 17801da177e4SLinus Torvalds struct he_rbp *rbp = NULL; 17811da177e4SLinus Torvalds unsigned cid, lastcid = -1; 17821da177e4SLinus Torvalds unsigned buf_len = 0; 17831da177e4SLinus Torvalds struct sk_buff *skb; 17841da177e4SLinus Torvalds struct atm_vcc *vcc = NULL; 17851da177e4SLinus Torvalds struct he_vcc *he_vcc; 17861da177e4SLinus Torvalds struct he_iovec *iov; 17871da177e4SLinus Torvalds int pdus_assembled = 0; 17881da177e4SLinus Torvalds int updated = 0; 17891da177e4SLinus Torvalds 17901da177e4SLinus Torvalds read_lock(&vcc_sklist_lock); 17911da177e4SLinus Torvalds while (he_dev->rbrq_head != rbrq_tail) { 17921da177e4SLinus Torvalds ++updated; 17931da177e4SLinus Torvalds 17941da177e4SLinus Torvalds HPRINTK("%p rbrq%d 0x%x len=%d cid=0x%x %s%s%s%s%s%s\n", 17951da177e4SLinus Torvalds he_dev->rbrq_head, group, 17961da177e4SLinus Torvalds RBRQ_ADDR(he_dev->rbrq_head), 17971da177e4SLinus Torvalds RBRQ_BUFLEN(he_dev->rbrq_head), 17981da177e4SLinus Torvalds RBRQ_CID(he_dev->rbrq_head), 17991da177e4SLinus Torvalds RBRQ_CRC_ERR(he_dev->rbrq_head) ? " CRC_ERR" : "", 18001da177e4SLinus Torvalds RBRQ_LEN_ERR(he_dev->rbrq_head) ? " LEN_ERR" : "", 18011da177e4SLinus Torvalds RBRQ_END_PDU(he_dev->rbrq_head) ? " END_PDU" : "", 18021da177e4SLinus Torvalds RBRQ_AAL5_PROT(he_dev->rbrq_head) ? " AAL5_PROT" : "", 18031da177e4SLinus Torvalds RBRQ_CON_CLOSED(he_dev->rbrq_head) ? " CON_CLOSED" : "", 18041da177e4SLinus Torvalds RBRQ_HBUF_ERR(he_dev->rbrq_head) ? " HBUF_ERR" : ""); 18051da177e4SLinus Torvalds 18061da177e4SLinus Torvalds #ifdef USE_RBPS 18071da177e4SLinus Torvalds if (RBRQ_ADDR(he_dev->rbrq_head) & RBP_SMALLBUF) 18081da177e4SLinus Torvalds rbp = &he_dev->rbps_base[RBP_INDEX(RBRQ_ADDR(he_dev->rbrq_head))]; 18091da177e4SLinus Torvalds else 18101da177e4SLinus Torvalds #endif 18111da177e4SLinus Torvalds rbp = &he_dev->rbpl_base[RBP_INDEX(RBRQ_ADDR(he_dev->rbrq_head))]; 18121da177e4SLinus Torvalds 18131da177e4SLinus Torvalds buf_len = RBRQ_BUFLEN(he_dev->rbrq_head) * 4; 18141da177e4SLinus Torvalds cid = RBRQ_CID(he_dev->rbrq_head); 18151da177e4SLinus Torvalds 18161da177e4SLinus Torvalds if (cid != lastcid) 18171da177e4SLinus Torvalds vcc = __find_vcc(he_dev, cid); 18181da177e4SLinus Torvalds lastcid = cid; 18191da177e4SLinus Torvalds 18201da177e4SLinus Torvalds if (vcc == NULL) { 18211da177e4SLinus Torvalds hprintk("vcc == NULL (cid 0x%x)\n", cid); 18221da177e4SLinus Torvalds if (!RBRQ_HBUF_ERR(he_dev->rbrq_head)) 18231da177e4SLinus Torvalds rbp->status &= ~RBP_LOANED; 18241da177e4SLinus Torvalds 18251da177e4SLinus Torvalds goto next_rbrq_entry; 18261da177e4SLinus Torvalds } 18271da177e4SLinus Torvalds 18281da177e4SLinus Torvalds he_vcc = HE_VCC(vcc); 18291da177e4SLinus Torvalds if (he_vcc == NULL) { 18301da177e4SLinus Torvalds hprintk("he_vcc == NULL (cid 0x%x)\n", cid); 18311da177e4SLinus Torvalds if (!RBRQ_HBUF_ERR(he_dev->rbrq_head)) 18321da177e4SLinus Torvalds rbp->status &= ~RBP_LOANED; 18331da177e4SLinus Torvalds goto next_rbrq_entry; 18341da177e4SLinus Torvalds } 18351da177e4SLinus Torvalds 18361da177e4SLinus Torvalds if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) { 18371da177e4SLinus Torvalds hprintk("HBUF_ERR! (cid 0x%x)\n", cid); 18381da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_drop); 18391da177e4SLinus Torvalds goto return_host_buffers; 18401da177e4SLinus Torvalds } 18411da177e4SLinus Torvalds 18421da177e4SLinus Torvalds he_vcc->iov_tail->iov_base = RBRQ_ADDR(he_dev->rbrq_head); 18431da177e4SLinus Torvalds he_vcc->iov_tail->iov_len = buf_len; 18441da177e4SLinus Torvalds he_vcc->pdu_len += buf_len; 18451da177e4SLinus Torvalds ++he_vcc->iov_tail; 18461da177e4SLinus Torvalds 18471da177e4SLinus Torvalds if (RBRQ_CON_CLOSED(he_dev->rbrq_head)) { 18481da177e4SLinus Torvalds lastcid = -1; 18491da177e4SLinus Torvalds HPRINTK("wake_up rx_waitq (cid 0x%x)\n", cid); 18501da177e4SLinus Torvalds wake_up(&he_vcc->rx_waitq); 18511da177e4SLinus Torvalds goto return_host_buffers; 18521da177e4SLinus Torvalds } 18531da177e4SLinus Torvalds 18541da177e4SLinus Torvalds #ifdef notdef 18551da177e4SLinus Torvalds if ((he_vcc->iov_tail - he_vcc->iov_head) > HE_MAXIOV) { 18561da177e4SLinus Torvalds hprintk("iovec full! cid 0x%x\n", cid); 18571da177e4SLinus Torvalds goto return_host_buffers; 18581da177e4SLinus Torvalds } 18591da177e4SLinus Torvalds #endif 18601da177e4SLinus Torvalds if (!RBRQ_END_PDU(he_dev->rbrq_head)) 18611da177e4SLinus Torvalds goto next_rbrq_entry; 18621da177e4SLinus Torvalds 18631da177e4SLinus Torvalds if (RBRQ_LEN_ERR(he_dev->rbrq_head) 18641da177e4SLinus Torvalds || RBRQ_CRC_ERR(he_dev->rbrq_head)) { 18651da177e4SLinus Torvalds HPRINTK("%s%s (%d.%d)\n", 18661da177e4SLinus Torvalds RBRQ_CRC_ERR(he_dev->rbrq_head) 18671da177e4SLinus Torvalds ? "CRC_ERR " : "", 18681da177e4SLinus Torvalds RBRQ_LEN_ERR(he_dev->rbrq_head) 18691da177e4SLinus Torvalds ? "LEN_ERR" : "", 18701da177e4SLinus Torvalds vcc->vpi, vcc->vci); 18711da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx_err); 18721da177e4SLinus Torvalds goto return_host_buffers; 18731da177e4SLinus Torvalds } 18741da177e4SLinus Torvalds 18751da177e4SLinus Torvalds skb = atm_alloc_charge(vcc, he_vcc->pdu_len + rx_skb_reserve, 18761da177e4SLinus Torvalds GFP_ATOMIC); 18771da177e4SLinus Torvalds if (!skb) { 18781da177e4SLinus Torvalds HPRINTK("charge failed (%d.%d)\n", vcc->vpi, vcc->vci); 18791da177e4SLinus Torvalds goto return_host_buffers; 18801da177e4SLinus Torvalds } 18811da177e4SLinus Torvalds 18821da177e4SLinus Torvalds if (rx_skb_reserve > 0) 18831da177e4SLinus Torvalds skb_reserve(skb, rx_skb_reserve); 18841da177e4SLinus Torvalds 1885a61bbcf2SPatrick McHardy __net_timestamp(skb); 18861da177e4SLinus Torvalds 18871da177e4SLinus Torvalds for (iov = he_vcc->iov_head; 18881da177e4SLinus Torvalds iov < he_vcc->iov_tail; ++iov) { 18891da177e4SLinus Torvalds #ifdef USE_RBPS 18901da177e4SLinus Torvalds if (iov->iov_base & RBP_SMALLBUF) 18911da177e4SLinus Torvalds memcpy(skb_put(skb, iov->iov_len), 18921da177e4SLinus Torvalds he_dev->rbps_virt[RBP_INDEX(iov->iov_base)].virt, iov->iov_len); 18931da177e4SLinus Torvalds else 18941da177e4SLinus Torvalds #endif 18951da177e4SLinus Torvalds memcpy(skb_put(skb, iov->iov_len), 18961da177e4SLinus Torvalds he_dev->rbpl_virt[RBP_INDEX(iov->iov_base)].virt, iov->iov_len); 18971da177e4SLinus Torvalds } 18981da177e4SLinus Torvalds 18991da177e4SLinus Torvalds switch (vcc->qos.aal) { 19001da177e4SLinus Torvalds case ATM_AAL0: 19011da177e4SLinus Torvalds /* 2.10.1.5 raw cell receive */ 19021da177e4SLinus Torvalds skb->len = ATM_AAL0_SDU; 190327a884dcSArnaldo Carvalho de Melo skb_set_tail_pointer(skb, skb->len); 19041da177e4SLinus Torvalds break; 19051da177e4SLinus Torvalds case ATM_AAL5: 19061da177e4SLinus Torvalds /* 2.10.1.2 aal5 receive */ 19071da177e4SLinus Torvalds 19081da177e4SLinus Torvalds skb->len = AAL5_LEN(skb->data, he_vcc->pdu_len); 190927a884dcSArnaldo Carvalho de Melo skb_set_tail_pointer(skb, skb->len); 19101da177e4SLinus Torvalds #ifdef USE_CHECKSUM_HW 19111da177e4SLinus Torvalds if (vcc->vpi == 0 && vcc->vci >= ATM_NOT_RSV_VCI) { 191284fa7933SPatrick McHardy skb->ip_summed = CHECKSUM_COMPLETE; 19131da177e4SLinus Torvalds skb->csum = TCP_CKSUM(skb->data, 19141da177e4SLinus Torvalds he_vcc->pdu_len); 19151da177e4SLinus Torvalds } 19161da177e4SLinus Torvalds #endif 19171da177e4SLinus Torvalds break; 19181da177e4SLinus Torvalds } 19191da177e4SLinus Torvalds 19201da177e4SLinus Torvalds #ifdef should_never_happen 19211da177e4SLinus Torvalds if (skb->len > vcc->qos.rxtp.max_sdu) 19221da177e4SLinus Torvalds hprintk("pdu_len (%d) > vcc->qos.rxtp.max_sdu (%d)! cid 0x%x\n", skb->len, vcc->qos.rxtp.max_sdu, cid); 19231da177e4SLinus Torvalds #endif 19241da177e4SLinus Torvalds 19251da177e4SLinus Torvalds #ifdef notdef 19261da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 19271da177e4SLinus Torvalds #endif 19287f81dc00SChas Williams spin_unlock(&he_dev->global_lock); 19291da177e4SLinus Torvalds vcc->push(vcc, skb); 19307f81dc00SChas Williams spin_lock(&he_dev->global_lock); 19311da177e4SLinus Torvalds 19321da177e4SLinus Torvalds atomic_inc(&vcc->stats->rx); 19331da177e4SLinus Torvalds 19341da177e4SLinus Torvalds return_host_buffers: 19351da177e4SLinus Torvalds ++pdus_assembled; 19361da177e4SLinus Torvalds 19371da177e4SLinus Torvalds for (iov = he_vcc->iov_head; 19381da177e4SLinus Torvalds iov < he_vcc->iov_tail; ++iov) { 19391da177e4SLinus Torvalds #ifdef USE_RBPS 19401da177e4SLinus Torvalds if (iov->iov_base & RBP_SMALLBUF) 19411da177e4SLinus Torvalds rbp = &he_dev->rbps_base[RBP_INDEX(iov->iov_base)]; 19421da177e4SLinus Torvalds else 19431da177e4SLinus Torvalds #endif 19441da177e4SLinus Torvalds rbp = &he_dev->rbpl_base[RBP_INDEX(iov->iov_base)]; 19451da177e4SLinus Torvalds 19461da177e4SLinus Torvalds rbp->status &= ~RBP_LOANED; 19471da177e4SLinus Torvalds } 19481da177e4SLinus Torvalds 19491da177e4SLinus Torvalds he_vcc->iov_tail = he_vcc->iov_head; 19501da177e4SLinus Torvalds he_vcc->pdu_len = 0; 19511da177e4SLinus Torvalds 19521da177e4SLinus Torvalds next_rbrq_entry: 19531da177e4SLinus Torvalds he_dev->rbrq_head = (struct he_rbrq *) 19541da177e4SLinus Torvalds ((unsigned long) he_dev->rbrq_base | 19551da177e4SLinus Torvalds RBRQ_MASK(++he_dev->rbrq_head)); 19561da177e4SLinus Torvalds 19571da177e4SLinus Torvalds } 19581da177e4SLinus Torvalds read_unlock(&vcc_sklist_lock); 19591da177e4SLinus Torvalds 19601da177e4SLinus Torvalds if (updated) { 19611da177e4SLinus Torvalds if (updated > he_dev->rbrq_peak) 19621da177e4SLinus Torvalds he_dev->rbrq_peak = updated; 19631da177e4SLinus Torvalds 19641da177e4SLinus Torvalds he_writel(he_dev, RBRQ_MASK(he_dev->rbrq_head), 19651da177e4SLinus Torvalds G0_RBRQ_H + (group * 16)); 19661da177e4SLinus Torvalds } 19671da177e4SLinus Torvalds 19681da177e4SLinus Torvalds return pdus_assembled; 19691da177e4SLinus Torvalds } 19701da177e4SLinus Torvalds 19711da177e4SLinus Torvalds static void 19721da177e4SLinus Torvalds he_service_tbrq(struct he_dev *he_dev, int group) 19731da177e4SLinus Torvalds { 19741da177e4SLinus Torvalds struct he_tbrq *tbrq_tail = (struct he_tbrq *) 19751da177e4SLinus Torvalds ((unsigned long)he_dev->tbrq_base | 19761da177e4SLinus Torvalds he_dev->hsp->group[group].tbrq_tail); 19771da177e4SLinus Torvalds struct he_tpd *tpd; 19781da177e4SLinus Torvalds int slot, updated = 0; 19791da177e4SLinus Torvalds #ifdef USE_TPD_POOL 19801da177e4SLinus Torvalds struct he_tpd *__tpd; 19811da177e4SLinus Torvalds #endif 19821da177e4SLinus Torvalds 19831da177e4SLinus Torvalds /* 2.1.6 transmit buffer return queue */ 19841da177e4SLinus Torvalds 19851da177e4SLinus Torvalds while (he_dev->tbrq_head != tbrq_tail) { 19861da177e4SLinus Torvalds ++updated; 19871da177e4SLinus Torvalds 19881da177e4SLinus Torvalds HPRINTK("tbrq%d 0x%x%s%s\n", 19891da177e4SLinus Torvalds group, 19901da177e4SLinus Torvalds TBRQ_TPD(he_dev->tbrq_head), 19911da177e4SLinus Torvalds TBRQ_EOS(he_dev->tbrq_head) ? " EOS" : "", 19921da177e4SLinus Torvalds TBRQ_MULTIPLE(he_dev->tbrq_head) ? " MULTIPLE" : ""); 19931da177e4SLinus Torvalds #ifdef USE_TPD_POOL 19941da177e4SLinus Torvalds tpd = NULL; 19951da177e4SLinus Torvalds list_for_each_entry(__tpd, &he_dev->outstanding_tpds, entry) { 19961da177e4SLinus Torvalds if (TPD_ADDR(__tpd->status) == TBRQ_TPD(he_dev->tbrq_head)) { 19971da177e4SLinus Torvalds tpd = __tpd; 19981da177e4SLinus Torvalds list_del(&__tpd->entry); 19991da177e4SLinus Torvalds break; 20001da177e4SLinus Torvalds } 20011da177e4SLinus Torvalds } 20021da177e4SLinus Torvalds 20031da177e4SLinus Torvalds if (tpd == NULL) { 20041da177e4SLinus Torvalds hprintk("unable to locate tpd for dma buffer %x\n", 20051da177e4SLinus Torvalds TBRQ_TPD(he_dev->tbrq_head)); 20061da177e4SLinus Torvalds goto next_tbrq_entry; 20071da177e4SLinus Torvalds } 20081da177e4SLinus Torvalds #else 20091da177e4SLinus Torvalds tpd = &he_dev->tpd_base[ TPD_INDEX(TBRQ_TPD(he_dev->tbrq_head)) ]; 20101da177e4SLinus Torvalds #endif 20111da177e4SLinus Torvalds 20121da177e4SLinus Torvalds if (TBRQ_EOS(he_dev->tbrq_head)) { 20131da177e4SLinus Torvalds HPRINTK("wake_up(tx_waitq) cid 0x%x\n", 20141da177e4SLinus Torvalds he_mkcid(he_dev, tpd->vcc->vpi, tpd->vcc->vci)); 20151da177e4SLinus Torvalds if (tpd->vcc) 20161da177e4SLinus Torvalds wake_up(&HE_VCC(tpd->vcc)->tx_waitq); 20171da177e4SLinus Torvalds 20181da177e4SLinus Torvalds goto next_tbrq_entry; 20191da177e4SLinus Torvalds } 20201da177e4SLinus Torvalds 20211da177e4SLinus Torvalds for (slot = 0; slot < TPD_MAXIOV; ++slot) { 20221da177e4SLinus Torvalds if (tpd->iovec[slot].addr) 20231da177e4SLinus Torvalds pci_unmap_single(he_dev->pci_dev, 20241da177e4SLinus Torvalds tpd->iovec[slot].addr, 20251da177e4SLinus Torvalds tpd->iovec[slot].len & TPD_LEN_MASK, 20261da177e4SLinus Torvalds PCI_DMA_TODEVICE); 20271da177e4SLinus Torvalds if (tpd->iovec[slot].len & TPD_LST) 20281da177e4SLinus Torvalds break; 20291da177e4SLinus Torvalds 20301da177e4SLinus Torvalds } 20311da177e4SLinus Torvalds 20321da177e4SLinus Torvalds if (tpd->skb) { /* && !TBRQ_MULTIPLE(he_dev->tbrq_head) */ 20331da177e4SLinus Torvalds if (tpd->vcc && tpd->vcc->pop) 20341da177e4SLinus Torvalds tpd->vcc->pop(tpd->vcc, tpd->skb); 20351da177e4SLinus Torvalds else 20361da177e4SLinus Torvalds dev_kfree_skb_any(tpd->skb); 20371da177e4SLinus Torvalds } 20381da177e4SLinus Torvalds 20391da177e4SLinus Torvalds next_tbrq_entry: 20401da177e4SLinus Torvalds #ifdef USE_TPD_POOL 20411da177e4SLinus Torvalds if (tpd) 20421da177e4SLinus Torvalds pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); 20431da177e4SLinus Torvalds #else 20441da177e4SLinus Torvalds tpd->inuse = 0; 20451da177e4SLinus Torvalds #endif 20461da177e4SLinus Torvalds he_dev->tbrq_head = (struct he_tbrq *) 20471da177e4SLinus Torvalds ((unsigned long) he_dev->tbrq_base | 20481da177e4SLinus Torvalds TBRQ_MASK(++he_dev->tbrq_head)); 20491da177e4SLinus Torvalds } 20501da177e4SLinus Torvalds 20511da177e4SLinus Torvalds if (updated) { 20521da177e4SLinus Torvalds if (updated > he_dev->tbrq_peak) 20531da177e4SLinus Torvalds he_dev->tbrq_peak = updated; 20541da177e4SLinus Torvalds 20551da177e4SLinus Torvalds he_writel(he_dev, TBRQ_MASK(he_dev->tbrq_head), 20561da177e4SLinus Torvalds G0_TBRQ_H + (group * 16)); 20571da177e4SLinus Torvalds } 20581da177e4SLinus Torvalds } 20591da177e4SLinus Torvalds 20601da177e4SLinus Torvalds 20611da177e4SLinus Torvalds static void 20621da177e4SLinus Torvalds he_service_rbpl(struct he_dev *he_dev, int group) 20631da177e4SLinus Torvalds { 20641da177e4SLinus Torvalds struct he_rbp *newtail; 20651da177e4SLinus Torvalds struct he_rbp *rbpl_head; 20661da177e4SLinus Torvalds int moved = 0; 20671da177e4SLinus Torvalds 20681da177e4SLinus Torvalds rbpl_head = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base | 20691da177e4SLinus Torvalds RBPL_MASK(he_readl(he_dev, G0_RBPL_S))); 20701da177e4SLinus Torvalds 20711da177e4SLinus Torvalds for (;;) { 20721da177e4SLinus Torvalds newtail = (struct he_rbp *) ((unsigned long)he_dev->rbpl_base | 20731da177e4SLinus Torvalds RBPL_MASK(he_dev->rbpl_tail+1)); 20741da177e4SLinus Torvalds 20751da177e4SLinus Torvalds /* table 3.42 -- rbpl_tail should never be set to rbpl_head */ 20761da177e4SLinus Torvalds if ((newtail == rbpl_head) || (newtail->status & RBP_LOANED)) 20771da177e4SLinus Torvalds break; 20781da177e4SLinus Torvalds 20791da177e4SLinus Torvalds newtail->status |= RBP_LOANED; 20801da177e4SLinus Torvalds he_dev->rbpl_tail = newtail; 20811da177e4SLinus Torvalds ++moved; 20821da177e4SLinus Torvalds } 20831da177e4SLinus Torvalds 20841da177e4SLinus Torvalds if (moved) 20851da177e4SLinus Torvalds he_writel(he_dev, RBPL_MASK(he_dev->rbpl_tail), G0_RBPL_T); 20861da177e4SLinus Torvalds } 20871da177e4SLinus Torvalds 20881da177e4SLinus Torvalds #ifdef USE_RBPS 20891da177e4SLinus Torvalds static void 20901da177e4SLinus Torvalds he_service_rbps(struct he_dev *he_dev, int group) 20911da177e4SLinus Torvalds { 20921da177e4SLinus Torvalds struct he_rbp *newtail; 20931da177e4SLinus Torvalds struct he_rbp *rbps_head; 20941da177e4SLinus Torvalds int moved = 0; 20951da177e4SLinus Torvalds 20961da177e4SLinus Torvalds rbps_head = (struct he_rbp *) ((unsigned long)he_dev->rbps_base | 20971da177e4SLinus Torvalds RBPS_MASK(he_readl(he_dev, G0_RBPS_S))); 20981da177e4SLinus Torvalds 20991da177e4SLinus Torvalds for (;;) { 21001da177e4SLinus Torvalds newtail = (struct he_rbp *) ((unsigned long)he_dev->rbps_base | 21011da177e4SLinus Torvalds RBPS_MASK(he_dev->rbps_tail+1)); 21021da177e4SLinus Torvalds 21031da177e4SLinus Torvalds /* table 3.42 -- rbps_tail should never be set to rbps_head */ 21041da177e4SLinus Torvalds if ((newtail == rbps_head) || (newtail->status & RBP_LOANED)) 21051da177e4SLinus Torvalds break; 21061da177e4SLinus Torvalds 21071da177e4SLinus Torvalds newtail->status |= RBP_LOANED; 21081da177e4SLinus Torvalds he_dev->rbps_tail = newtail; 21091da177e4SLinus Torvalds ++moved; 21101da177e4SLinus Torvalds } 21111da177e4SLinus Torvalds 21121da177e4SLinus Torvalds if (moved) 21131da177e4SLinus Torvalds he_writel(he_dev, RBPS_MASK(he_dev->rbps_tail), G0_RBPS_T); 21141da177e4SLinus Torvalds } 21151da177e4SLinus Torvalds #endif /* USE_RBPS */ 21161da177e4SLinus Torvalds 21171da177e4SLinus Torvalds static void 21181da177e4SLinus Torvalds he_tasklet(unsigned long data) 21191da177e4SLinus Torvalds { 21201da177e4SLinus Torvalds unsigned long flags; 21211da177e4SLinus Torvalds struct he_dev *he_dev = (struct he_dev *) data; 21221da177e4SLinus Torvalds int group, type; 21231da177e4SLinus Torvalds int updated = 0; 21241da177e4SLinus Torvalds 21251da177e4SLinus Torvalds HPRINTK("tasklet (0x%lx)\n", data); 21261da177e4SLinus Torvalds #ifdef USE_TASKLET 21271da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 21281da177e4SLinus Torvalds #endif 21291da177e4SLinus Torvalds 21301da177e4SLinus Torvalds while (he_dev->irq_head != he_dev->irq_tail) { 21311da177e4SLinus Torvalds ++updated; 21321da177e4SLinus Torvalds 21331da177e4SLinus Torvalds type = ITYPE_TYPE(he_dev->irq_head->isw); 21341da177e4SLinus Torvalds group = ITYPE_GROUP(he_dev->irq_head->isw); 21351da177e4SLinus Torvalds 21361da177e4SLinus Torvalds switch (type) { 21371da177e4SLinus Torvalds case ITYPE_RBRQ_THRESH: 21381da177e4SLinus Torvalds HPRINTK("rbrq%d threshold\n", group); 21391da177e4SLinus Torvalds /* fall through */ 21401da177e4SLinus Torvalds case ITYPE_RBRQ_TIMER: 21411da177e4SLinus Torvalds if (he_service_rbrq(he_dev, group)) { 21421da177e4SLinus Torvalds he_service_rbpl(he_dev, group); 21431da177e4SLinus Torvalds #ifdef USE_RBPS 21441da177e4SLinus Torvalds he_service_rbps(he_dev, group); 21451da177e4SLinus Torvalds #endif /* USE_RBPS */ 21461da177e4SLinus Torvalds } 21471da177e4SLinus Torvalds break; 21481da177e4SLinus Torvalds case ITYPE_TBRQ_THRESH: 21491da177e4SLinus Torvalds HPRINTK("tbrq%d threshold\n", group); 21501da177e4SLinus Torvalds /* fall through */ 21511da177e4SLinus Torvalds case ITYPE_TPD_COMPLETE: 21521da177e4SLinus Torvalds he_service_tbrq(he_dev, group); 21531da177e4SLinus Torvalds break; 21541da177e4SLinus Torvalds case ITYPE_RBPL_THRESH: 21551da177e4SLinus Torvalds he_service_rbpl(he_dev, group); 21561da177e4SLinus Torvalds break; 21571da177e4SLinus Torvalds case ITYPE_RBPS_THRESH: 21581da177e4SLinus Torvalds #ifdef USE_RBPS 21591da177e4SLinus Torvalds he_service_rbps(he_dev, group); 21601da177e4SLinus Torvalds #endif /* USE_RBPS */ 21611da177e4SLinus Torvalds break; 21621da177e4SLinus Torvalds case ITYPE_PHY: 21631da177e4SLinus Torvalds HPRINTK("phy interrupt\n"); 21641da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 21651da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 21661da177e4SLinus Torvalds if (he_dev->atm_dev->phy && he_dev->atm_dev->phy->interrupt) 21671da177e4SLinus Torvalds he_dev->atm_dev->phy->interrupt(he_dev->atm_dev); 21681da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 21691da177e4SLinus Torvalds #endif 21701da177e4SLinus Torvalds break; 21711da177e4SLinus Torvalds case ITYPE_OTHER: 21721da177e4SLinus Torvalds switch (type|group) { 21731da177e4SLinus Torvalds case ITYPE_PARITY: 21741da177e4SLinus Torvalds hprintk("parity error\n"); 21751da177e4SLinus Torvalds break; 21761da177e4SLinus Torvalds case ITYPE_ABORT: 21771da177e4SLinus Torvalds hprintk("abort 0x%x\n", he_readl(he_dev, ABORT_ADDR)); 21781da177e4SLinus Torvalds break; 21791da177e4SLinus Torvalds } 21801da177e4SLinus Torvalds break; 21811da177e4SLinus Torvalds case ITYPE_TYPE(ITYPE_INVALID): 21821da177e4SLinus Torvalds /* see 8.1.1 -- check all queues */ 21831da177e4SLinus Torvalds 21841da177e4SLinus Torvalds HPRINTK("isw not updated 0x%x\n", he_dev->irq_head->isw); 21851da177e4SLinus Torvalds 21861da177e4SLinus Torvalds he_service_rbrq(he_dev, 0); 21871da177e4SLinus Torvalds he_service_rbpl(he_dev, 0); 21881da177e4SLinus Torvalds #ifdef USE_RBPS 21891da177e4SLinus Torvalds he_service_rbps(he_dev, 0); 21901da177e4SLinus Torvalds #endif /* USE_RBPS */ 21911da177e4SLinus Torvalds he_service_tbrq(he_dev, 0); 21921da177e4SLinus Torvalds break; 21931da177e4SLinus Torvalds default: 21941da177e4SLinus Torvalds hprintk("bad isw 0x%x?\n", he_dev->irq_head->isw); 21951da177e4SLinus Torvalds } 21961da177e4SLinus Torvalds 21971da177e4SLinus Torvalds he_dev->irq_head->isw = ITYPE_INVALID; 21981da177e4SLinus Torvalds 21991da177e4SLinus Torvalds he_dev->irq_head = (struct he_irq *) NEXT_ENTRY(he_dev->irq_base, he_dev->irq_head, IRQ_MASK); 22001da177e4SLinus Torvalds } 22011da177e4SLinus Torvalds 22021da177e4SLinus Torvalds if (updated) { 22031da177e4SLinus Torvalds if (updated > he_dev->irq_peak) 22041da177e4SLinus Torvalds he_dev->irq_peak = updated; 22051da177e4SLinus Torvalds 22061da177e4SLinus Torvalds he_writel(he_dev, 22071da177e4SLinus Torvalds IRQ_SIZE(CONFIG_IRQ_SIZE) | 22081da177e4SLinus Torvalds IRQ_THRESH(CONFIG_IRQ_THRESH) | 22091da177e4SLinus Torvalds IRQ_TAIL(he_dev->irq_tail), IRQ0_HEAD); 22101da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata; flush posted writes */ 22111da177e4SLinus Torvalds } 22121da177e4SLinus Torvalds #ifdef USE_TASKLET 22131da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22141da177e4SLinus Torvalds #endif 22151da177e4SLinus Torvalds } 22161da177e4SLinus Torvalds 22171da177e4SLinus Torvalds static irqreturn_t 22187d12e780SDavid Howells he_irq_handler(int irq, void *dev_id) 22191da177e4SLinus Torvalds { 22201da177e4SLinus Torvalds unsigned long flags; 22211da177e4SLinus Torvalds struct he_dev *he_dev = (struct he_dev * )dev_id; 22221da177e4SLinus Torvalds int handled = 0; 22231da177e4SLinus Torvalds 22241da177e4SLinus Torvalds if (he_dev == NULL) 22251da177e4SLinus Torvalds return IRQ_NONE; 22261da177e4SLinus Torvalds 22271da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 22281da177e4SLinus Torvalds 22291da177e4SLinus Torvalds he_dev->irq_tail = (struct he_irq *) (((unsigned long)he_dev->irq_base) | 22301da177e4SLinus Torvalds (*he_dev->irq_tailoffset << 2)); 22311da177e4SLinus Torvalds 22321da177e4SLinus Torvalds if (he_dev->irq_tail == he_dev->irq_head) { 22331da177e4SLinus Torvalds HPRINTK("tailoffset not updated?\n"); 22341da177e4SLinus Torvalds he_dev->irq_tail = (struct he_irq *) ((unsigned long)he_dev->irq_base | 22351da177e4SLinus Torvalds ((he_readl(he_dev, IRQ0_BASE) & IRQ_MASK) << 2)); 22361da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* 8.1.2 controller errata */ 22371da177e4SLinus Torvalds } 22381da177e4SLinus Torvalds 22391da177e4SLinus Torvalds #ifdef DEBUG 22401da177e4SLinus Torvalds if (he_dev->irq_head == he_dev->irq_tail /* && !IRQ_PENDING */) 22411da177e4SLinus Torvalds hprintk("spurious (or shared) interrupt?\n"); 22421da177e4SLinus Torvalds #endif 22431da177e4SLinus Torvalds 22441da177e4SLinus Torvalds if (he_dev->irq_head != he_dev->irq_tail) { 22451da177e4SLinus Torvalds handled = 1; 22461da177e4SLinus Torvalds #ifdef USE_TASKLET 22471da177e4SLinus Torvalds tasklet_schedule(&he_dev->tasklet); 22481da177e4SLinus Torvalds #else 22491da177e4SLinus Torvalds he_tasklet((unsigned long) he_dev); 22501da177e4SLinus Torvalds #endif 22511da177e4SLinus Torvalds he_writel(he_dev, INT_CLEAR_A, INT_FIFO); /* clear interrupt */ 22521da177e4SLinus Torvalds (void) he_readl(he_dev, INT_FIFO); /* flush posted writes */ 22531da177e4SLinus Torvalds } 22541da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 22551da177e4SLinus Torvalds return IRQ_RETVAL(handled); 22561da177e4SLinus Torvalds 22571da177e4SLinus Torvalds } 22581da177e4SLinus Torvalds 22591da177e4SLinus Torvalds static __inline__ void 22601da177e4SLinus Torvalds __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid) 22611da177e4SLinus Torvalds { 22621da177e4SLinus Torvalds struct he_tpdrq *new_tail; 22631da177e4SLinus Torvalds 22641da177e4SLinus Torvalds HPRINTK("tpdrq %p cid 0x%x -> tpdrq_tail %p\n", 22651da177e4SLinus Torvalds tpd, cid, he_dev->tpdrq_tail); 22661da177e4SLinus Torvalds 22671da177e4SLinus Torvalds /* new_tail = he_dev->tpdrq_tail; */ 22681da177e4SLinus Torvalds new_tail = (struct he_tpdrq *) ((unsigned long) he_dev->tpdrq_base | 22691da177e4SLinus Torvalds TPDRQ_MASK(he_dev->tpdrq_tail+1)); 22701da177e4SLinus Torvalds 22711da177e4SLinus Torvalds /* 22721da177e4SLinus Torvalds * check to see if we are about to set the tail == head 22731da177e4SLinus Torvalds * if true, update the head pointer from the adapter 22741da177e4SLinus Torvalds * to see if this is really the case (reading the queue 22751da177e4SLinus Torvalds * head for every enqueue would be unnecessarily slow) 22761da177e4SLinus Torvalds */ 22771da177e4SLinus Torvalds 22781da177e4SLinus Torvalds if (new_tail == he_dev->tpdrq_head) { 22791da177e4SLinus Torvalds he_dev->tpdrq_head = (struct he_tpdrq *) 22801da177e4SLinus Torvalds (((unsigned long)he_dev->tpdrq_base) | 22811da177e4SLinus Torvalds TPDRQ_MASK(he_readl(he_dev, TPDRQ_B_H))); 22821da177e4SLinus Torvalds 22831da177e4SLinus Torvalds if (new_tail == he_dev->tpdrq_head) { 2284d730e103SChas Williams int slot; 2285d730e103SChas Williams 22861da177e4SLinus Torvalds hprintk("tpdrq full (cid 0x%x)\n", cid); 22871da177e4SLinus Torvalds /* 22881da177e4SLinus Torvalds * FIXME 22891da177e4SLinus Torvalds * push tpd onto a transmit backlog queue 22901da177e4SLinus Torvalds * after service_tbrq, service the backlog 22911da177e4SLinus Torvalds * for now, we just drop the pdu 22921da177e4SLinus Torvalds */ 2293d730e103SChas Williams for (slot = 0; slot < TPD_MAXIOV; ++slot) { 2294d730e103SChas Williams if (tpd->iovec[slot].addr) 2295d730e103SChas Williams pci_unmap_single(he_dev->pci_dev, 2296d730e103SChas Williams tpd->iovec[slot].addr, 2297d730e103SChas Williams tpd->iovec[slot].len & TPD_LEN_MASK, 2298d730e103SChas Williams PCI_DMA_TODEVICE); 2299d730e103SChas Williams } 23001da177e4SLinus Torvalds if (tpd->skb) { 23011da177e4SLinus Torvalds if (tpd->vcc->pop) 23021da177e4SLinus Torvalds tpd->vcc->pop(tpd->vcc, tpd->skb); 23031da177e4SLinus Torvalds else 23041da177e4SLinus Torvalds dev_kfree_skb_any(tpd->skb); 23051da177e4SLinus Torvalds atomic_inc(&tpd->vcc->stats->tx_err); 23061da177e4SLinus Torvalds } 23071da177e4SLinus Torvalds #ifdef USE_TPD_POOL 23081da177e4SLinus Torvalds pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status)); 23091da177e4SLinus Torvalds #else 23101da177e4SLinus Torvalds tpd->inuse = 0; 23111da177e4SLinus Torvalds #endif 23121da177e4SLinus Torvalds return; 23131da177e4SLinus Torvalds } 23141da177e4SLinus Torvalds } 23151da177e4SLinus Torvalds 23161da177e4SLinus Torvalds /* 2.1.5 transmit packet descriptor ready queue */ 23171da177e4SLinus Torvalds #ifdef USE_TPD_POOL 23181da177e4SLinus Torvalds list_add_tail(&tpd->entry, &he_dev->outstanding_tpds); 23191da177e4SLinus Torvalds he_dev->tpdrq_tail->tpd = TPD_ADDR(tpd->status); 23201da177e4SLinus Torvalds #else 23211da177e4SLinus Torvalds he_dev->tpdrq_tail->tpd = he_dev->tpd_base_phys + 23221da177e4SLinus Torvalds (TPD_INDEX(tpd->status) * sizeof(struct he_tpd)); 23231da177e4SLinus Torvalds #endif 23241da177e4SLinus Torvalds he_dev->tpdrq_tail->cid = cid; 23251da177e4SLinus Torvalds wmb(); 23261da177e4SLinus Torvalds 23271da177e4SLinus Torvalds he_dev->tpdrq_tail = new_tail; 23281da177e4SLinus Torvalds 23291da177e4SLinus Torvalds he_writel(he_dev, TPDRQ_MASK(he_dev->tpdrq_tail), TPDRQ_T); 23301da177e4SLinus Torvalds (void) he_readl(he_dev, TPDRQ_T); /* flush posted writes */ 23311da177e4SLinus Torvalds } 23321da177e4SLinus Torvalds 23331da177e4SLinus Torvalds static int 23341da177e4SLinus Torvalds he_open(struct atm_vcc *vcc) 23351da177e4SLinus Torvalds { 23361da177e4SLinus Torvalds unsigned long flags; 23371da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 23381da177e4SLinus Torvalds struct he_vcc *he_vcc; 23391da177e4SLinus Torvalds int err = 0; 23401da177e4SLinus Torvalds unsigned cid, rsr0, rsr1, rsr4, tsr0, tsr0_aal, tsr4, period, reg, clock; 23411da177e4SLinus Torvalds short vpi = vcc->vpi; 23421da177e4SLinus Torvalds int vci = vcc->vci; 23431da177e4SLinus Torvalds 23441da177e4SLinus Torvalds if (vci == ATM_VCI_UNSPEC || vpi == ATM_VPI_UNSPEC) 23451da177e4SLinus Torvalds return 0; 23461da177e4SLinus Torvalds 23471da177e4SLinus Torvalds HPRINTK("open vcc %p %d.%d\n", vcc, vpi, vci); 23481da177e4SLinus Torvalds 23491da177e4SLinus Torvalds set_bit(ATM_VF_ADDR, &vcc->flags); 23501da177e4SLinus Torvalds 23511da177e4SLinus Torvalds cid = he_mkcid(he_dev, vpi, vci); 23521da177e4SLinus Torvalds 23535cbded58SRobert P. J. Day he_vcc = kmalloc(sizeof(struct he_vcc), GFP_ATOMIC); 23541da177e4SLinus Torvalds if (he_vcc == NULL) { 23551da177e4SLinus Torvalds hprintk("unable to allocate he_vcc during open\n"); 23561da177e4SLinus Torvalds return -ENOMEM; 23571da177e4SLinus Torvalds } 23581da177e4SLinus Torvalds 23591da177e4SLinus Torvalds he_vcc->iov_tail = he_vcc->iov_head; 23601da177e4SLinus Torvalds he_vcc->pdu_len = 0; 23611da177e4SLinus Torvalds he_vcc->rc_index = -1; 23621da177e4SLinus Torvalds 23631da177e4SLinus Torvalds init_waitqueue_head(&he_vcc->rx_waitq); 23641da177e4SLinus Torvalds init_waitqueue_head(&he_vcc->tx_waitq); 23651da177e4SLinus Torvalds 23661da177e4SLinus Torvalds vcc->dev_data = he_vcc; 23671da177e4SLinus Torvalds 23681da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE) { 23691da177e4SLinus Torvalds int pcr_goal; 23701da177e4SLinus Torvalds 23711da177e4SLinus Torvalds pcr_goal = atm_pcr_goal(&vcc->qos.txtp); 23721da177e4SLinus Torvalds if (pcr_goal == 0) 23731da177e4SLinus Torvalds pcr_goal = he_dev->atm_dev->link_rate; 23741da177e4SLinus Torvalds if (pcr_goal < 0) /* means round down, technically */ 23751da177e4SLinus Torvalds pcr_goal = -pcr_goal; 23761da177e4SLinus Torvalds 23771da177e4SLinus Torvalds HPRINTK("open tx cid 0x%x pcr_goal %d\n", cid, pcr_goal); 23781da177e4SLinus Torvalds 23791da177e4SLinus Torvalds switch (vcc->qos.aal) { 23801da177e4SLinus Torvalds case ATM_AAL5: 23811da177e4SLinus Torvalds tsr0_aal = TSR0_AAL5; 23821da177e4SLinus Torvalds tsr4 = TSR4_AAL5; 23831da177e4SLinus Torvalds break; 23841da177e4SLinus Torvalds case ATM_AAL0: 23851da177e4SLinus Torvalds tsr0_aal = TSR0_AAL0_SDU; 23861da177e4SLinus Torvalds tsr4 = TSR4_AAL0_SDU; 23871da177e4SLinus Torvalds break; 23881da177e4SLinus Torvalds default: 23891da177e4SLinus Torvalds err = -EINVAL; 23901da177e4SLinus Torvalds goto open_failed; 23911da177e4SLinus Torvalds } 23921da177e4SLinus Torvalds 23931da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 23941da177e4SLinus Torvalds tsr0 = he_readl_tsr0(he_dev, cid); 23951da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 23961da177e4SLinus Torvalds 23971da177e4SLinus Torvalds if (TSR0_CONN_STATE(tsr0) != 0) { 23981da177e4SLinus Torvalds hprintk("cid 0x%x not idle (tsr0 = 0x%x)\n", cid, tsr0); 23991da177e4SLinus Torvalds err = -EBUSY; 24001da177e4SLinus Torvalds goto open_failed; 24011da177e4SLinus Torvalds } 24021da177e4SLinus Torvalds 24031da177e4SLinus Torvalds switch (vcc->qos.txtp.traffic_class) { 24041da177e4SLinus Torvalds case ATM_UBR: 24051da177e4SLinus Torvalds /* 2.3.3.1 open connection ubr */ 24061da177e4SLinus Torvalds 24071da177e4SLinus Torvalds tsr0 = TSR0_UBR | TSR0_GROUP(0) | tsr0_aal | 24081da177e4SLinus Torvalds TSR0_USE_WMIN | TSR0_UPDATE_GER; 24091da177e4SLinus Torvalds break; 24101da177e4SLinus Torvalds 24111da177e4SLinus Torvalds case ATM_CBR: 24121da177e4SLinus Torvalds /* 2.3.3.2 open connection cbr */ 24131da177e4SLinus Torvalds 24141da177e4SLinus Torvalds /* 8.2.3 cbr scheduler wrap problem -- limit to 90% total link rate */ 24151da177e4SLinus Torvalds if ((he_dev->total_bw + pcr_goal) 24161da177e4SLinus Torvalds > (he_dev->atm_dev->link_rate * 9 / 10)) 24171da177e4SLinus Torvalds { 24181da177e4SLinus Torvalds err = -EBUSY; 24191da177e4SLinus Torvalds goto open_failed; 24201da177e4SLinus Torvalds } 24211da177e4SLinus Torvalds 24221da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); /* also protects he_dev->cs_stper[] */ 24231da177e4SLinus Torvalds 24241da177e4SLinus Torvalds /* find an unused cs_stper register */ 24251da177e4SLinus Torvalds for (reg = 0; reg < HE_NUM_CS_STPER; ++reg) 24261da177e4SLinus Torvalds if (he_dev->cs_stper[reg].inuse == 0 || 24271da177e4SLinus Torvalds he_dev->cs_stper[reg].pcr == pcr_goal) 24281da177e4SLinus Torvalds break; 24291da177e4SLinus Torvalds 24301da177e4SLinus Torvalds if (reg == HE_NUM_CS_STPER) { 24311da177e4SLinus Torvalds err = -EBUSY; 24321da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24331da177e4SLinus Torvalds goto open_failed; 24341da177e4SLinus Torvalds } 24351da177e4SLinus Torvalds 24361da177e4SLinus Torvalds he_dev->total_bw += pcr_goal; 24371da177e4SLinus Torvalds 24381da177e4SLinus Torvalds he_vcc->rc_index = reg; 24391da177e4SLinus Torvalds ++he_dev->cs_stper[reg].inuse; 24401da177e4SLinus Torvalds he_dev->cs_stper[reg].pcr = pcr_goal; 24411da177e4SLinus Torvalds 24421da177e4SLinus Torvalds clock = he_is622(he_dev) ? 66667000 : 50000000; 24431da177e4SLinus Torvalds period = clock / pcr_goal; 24441da177e4SLinus Torvalds 24451da177e4SLinus Torvalds HPRINTK("rc_index = %d period = %d\n", 24461da177e4SLinus Torvalds reg, period); 24471da177e4SLinus Torvalds 24481da177e4SLinus Torvalds he_writel_mbox(he_dev, rate_to_atmf(period/2), 24491da177e4SLinus Torvalds CS_STPER0 + reg); 24501da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24511da177e4SLinus Torvalds 24521da177e4SLinus Torvalds tsr0 = TSR0_CBR | TSR0_GROUP(0) | tsr0_aal | 24531da177e4SLinus Torvalds TSR0_RC_INDEX(reg); 24541da177e4SLinus Torvalds 24551da177e4SLinus Torvalds break; 24561da177e4SLinus Torvalds default: 24571da177e4SLinus Torvalds err = -EINVAL; 24581da177e4SLinus Torvalds goto open_failed; 24591da177e4SLinus Torvalds } 24601da177e4SLinus Torvalds 24611da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 24621da177e4SLinus Torvalds 24631da177e4SLinus Torvalds he_writel_tsr0(he_dev, tsr0, cid); 24641da177e4SLinus Torvalds he_writel_tsr4(he_dev, tsr4 | 1, cid); 24651da177e4SLinus Torvalds he_writel_tsr1(he_dev, TSR1_MCR(rate_to_atmf(0)) | 24661da177e4SLinus Torvalds TSR1_PCR(rate_to_atmf(pcr_goal)), cid); 24671da177e4SLinus Torvalds he_writel_tsr2(he_dev, TSR2_ACR(rate_to_atmf(pcr_goal)), cid); 24681da177e4SLinus Torvalds he_writel_tsr9(he_dev, TSR9_OPEN_CONN, cid); 24691da177e4SLinus Torvalds 24701da177e4SLinus Torvalds he_writel_tsr3(he_dev, 0x0, cid); 24711da177e4SLinus Torvalds he_writel_tsr5(he_dev, 0x0, cid); 24721da177e4SLinus Torvalds he_writel_tsr6(he_dev, 0x0, cid); 24731da177e4SLinus Torvalds he_writel_tsr7(he_dev, 0x0, cid); 24741da177e4SLinus Torvalds he_writel_tsr8(he_dev, 0x0, cid); 24751da177e4SLinus Torvalds he_writel_tsr10(he_dev, 0x0, cid); 24761da177e4SLinus Torvalds he_writel_tsr11(he_dev, 0x0, cid); 24771da177e4SLinus Torvalds he_writel_tsr12(he_dev, 0x0, cid); 24781da177e4SLinus Torvalds he_writel_tsr13(he_dev, 0x0, cid); 24791da177e4SLinus Torvalds he_writel_tsr14(he_dev, 0x0, cid); 24801da177e4SLinus Torvalds (void) he_readl_tsr0(he_dev, cid); /* flush posted writes */ 24811da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 24821da177e4SLinus Torvalds } 24831da177e4SLinus Torvalds 24841da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 24851da177e4SLinus Torvalds unsigned aal; 24861da177e4SLinus Torvalds 24871da177e4SLinus Torvalds HPRINTK("open rx cid 0x%x (rx_waitq %p)\n", cid, 24881da177e4SLinus Torvalds &HE_VCC(vcc)->rx_waitq); 24891da177e4SLinus Torvalds 24901da177e4SLinus Torvalds switch (vcc->qos.aal) { 24911da177e4SLinus Torvalds case ATM_AAL5: 24921da177e4SLinus Torvalds aal = RSR0_AAL5; 24931da177e4SLinus Torvalds break; 24941da177e4SLinus Torvalds case ATM_AAL0: 24951da177e4SLinus Torvalds aal = RSR0_RAWCELL; 24961da177e4SLinus Torvalds break; 24971da177e4SLinus Torvalds default: 24981da177e4SLinus Torvalds err = -EINVAL; 24991da177e4SLinus Torvalds goto open_failed; 25001da177e4SLinus Torvalds } 25011da177e4SLinus Torvalds 25021da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 25031da177e4SLinus Torvalds 25041da177e4SLinus Torvalds rsr0 = he_readl_rsr0(he_dev, cid); 25051da177e4SLinus Torvalds if (rsr0 & RSR0_OPEN_CONN) { 25061da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25071da177e4SLinus Torvalds 25081da177e4SLinus Torvalds hprintk("cid 0x%x not idle (rsr0 = 0x%x)\n", cid, rsr0); 25091da177e4SLinus Torvalds err = -EBUSY; 25101da177e4SLinus Torvalds goto open_failed; 25111da177e4SLinus Torvalds } 25121da177e4SLinus Torvalds 25131da177e4SLinus Torvalds #ifdef USE_RBPS 25141da177e4SLinus Torvalds rsr1 = RSR1_GROUP(0); 25151da177e4SLinus Torvalds rsr4 = RSR4_GROUP(0); 25161da177e4SLinus Torvalds #else /* !USE_RBPS */ 25171da177e4SLinus Torvalds rsr1 = RSR1_GROUP(0)|RSR1_RBPL_ONLY; 25181da177e4SLinus Torvalds rsr4 = RSR4_GROUP(0)|RSR4_RBPL_ONLY; 25191da177e4SLinus Torvalds #endif /* USE_RBPS */ 25201da177e4SLinus Torvalds rsr0 = vcc->qos.rxtp.traffic_class == ATM_UBR ? 25211da177e4SLinus Torvalds (RSR0_EPD_ENABLE|RSR0_PPD_ENABLE) : 0; 25221da177e4SLinus Torvalds 25231da177e4SLinus Torvalds #ifdef USE_CHECKSUM_HW 25241da177e4SLinus Torvalds if (vpi == 0 && vci >= ATM_NOT_RSV_VCI) 25251da177e4SLinus Torvalds rsr0 |= RSR0_TCP_CKSUM; 25261da177e4SLinus Torvalds #endif 25271da177e4SLinus Torvalds 25281da177e4SLinus Torvalds he_writel_rsr4(he_dev, rsr4, cid); 25291da177e4SLinus Torvalds he_writel_rsr1(he_dev, rsr1, cid); 25301da177e4SLinus Torvalds /* 5.1.11 last parameter initialized should be 25311da177e4SLinus Torvalds the open/closed indication in rsr0 */ 25321da177e4SLinus Torvalds he_writel_rsr0(he_dev, 25331da177e4SLinus Torvalds rsr0 | RSR0_START_PDU | RSR0_OPEN_CONN | aal, cid); 25341da177e4SLinus Torvalds (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */ 25351da177e4SLinus Torvalds 25361da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25371da177e4SLinus Torvalds } 25381da177e4SLinus Torvalds 25391da177e4SLinus Torvalds open_failed: 25401da177e4SLinus Torvalds 25411da177e4SLinus Torvalds if (err) { 25421da177e4SLinus Torvalds kfree(he_vcc); 25431da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 25441da177e4SLinus Torvalds } 25451da177e4SLinus Torvalds else 25461da177e4SLinus Torvalds set_bit(ATM_VF_READY, &vcc->flags); 25471da177e4SLinus Torvalds 25481da177e4SLinus Torvalds return err; 25491da177e4SLinus Torvalds } 25501da177e4SLinus Torvalds 25511da177e4SLinus Torvalds static void 25521da177e4SLinus Torvalds he_close(struct atm_vcc *vcc) 25531da177e4SLinus Torvalds { 25541da177e4SLinus Torvalds unsigned long flags; 25551da177e4SLinus Torvalds DECLARE_WAITQUEUE(wait, current); 25561da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 25571da177e4SLinus Torvalds struct he_tpd *tpd; 25581da177e4SLinus Torvalds unsigned cid; 25591da177e4SLinus Torvalds struct he_vcc *he_vcc = HE_VCC(vcc); 25601da177e4SLinus Torvalds #define MAX_RETRY 30 25611da177e4SLinus Torvalds int retry = 0, sleep = 1, tx_inuse; 25621da177e4SLinus Torvalds 25631da177e4SLinus Torvalds HPRINTK("close vcc %p %d.%d\n", vcc, vcc->vpi, vcc->vci); 25641da177e4SLinus Torvalds 25651da177e4SLinus Torvalds clear_bit(ATM_VF_READY, &vcc->flags); 25661da177e4SLinus Torvalds cid = he_mkcid(he_dev, vcc->vpi, vcc->vci); 25671da177e4SLinus Torvalds 25681da177e4SLinus Torvalds if (vcc->qos.rxtp.traffic_class != ATM_NONE) { 25691da177e4SLinus Torvalds int timeout; 25701da177e4SLinus Torvalds 25711da177e4SLinus Torvalds HPRINTK("close rx cid 0x%x\n", cid); 25721da177e4SLinus Torvalds 25731da177e4SLinus Torvalds /* 2.7.2.2 close receive operation */ 25741da177e4SLinus Torvalds 25751da177e4SLinus Torvalds /* wait for previous close (if any) to finish */ 25761da177e4SLinus Torvalds 25771da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 25781da177e4SLinus Torvalds while (he_readl(he_dev, RCC_STAT) & RCC_BUSY) { 25791da177e4SLinus Torvalds HPRINTK("close cid 0x%x RCC_BUSY\n", cid); 25801da177e4SLinus Torvalds udelay(250); 25811da177e4SLinus Torvalds } 25821da177e4SLinus Torvalds 25831da177e4SLinus Torvalds set_current_state(TASK_UNINTERRUPTIBLE); 25841da177e4SLinus Torvalds add_wait_queue(&he_vcc->rx_waitq, &wait); 25851da177e4SLinus Torvalds 25861da177e4SLinus Torvalds he_writel_rsr0(he_dev, RSR0_CLOSE_CONN, cid); 25871da177e4SLinus Torvalds (void) he_readl_rsr0(he_dev, cid); /* flush posted writes */ 25881da177e4SLinus Torvalds he_writel_mbox(he_dev, cid, RXCON_CLOSE); 25891da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 25901da177e4SLinus Torvalds 25911da177e4SLinus Torvalds timeout = schedule_timeout(30*HZ); 25921da177e4SLinus Torvalds 25931da177e4SLinus Torvalds remove_wait_queue(&he_vcc->rx_waitq, &wait); 25941da177e4SLinus Torvalds set_current_state(TASK_RUNNING); 25951da177e4SLinus Torvalds 25961da177e4SLinus Torvalds if (timeout == 0) 25971da177e4SLinus Torvalds hprintk("close rx timeout cid 0x%x\n", cid); 25981da177e4SLinus Torvalds 25991da177e4SLinus Torvalds HPRINTK("close rx cid 0x%x complete\n", cid); 26001da177e4SLinus Torvalds 26011da177e4SLinus Torvalds } 26021da177e4SLinus Torvalds 26031da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class != ATM_NONE) { 26041da177e4SLinus Torvalds volatile unsigned tsr4, tsr0; 26051da177e4SLinus Torvalds int timeout; 26061da177e4SLinus Torvalds 26071da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x\n", cid); 26081da177e4SLinus Torvalds 26091da177e4SLinus Torvalds /* 2.1.2 26101da177e4SLinus Torvalds * 26111da177e4SLinus Torvalds * ... the host must first stop queueing packets to the TPDRQ 26121da177e4SLinus Torvalds * on the connection to be closed, then wait for all outstanding 26131da177e4SLinus Torvalds * packets to be transmitted and their buffers returned to the 26141da177e4SLinus Torvalds * TBRQ. When the last packet on the connection arrives in the 26151da177e4SLinus Torvalds * TBRQ, the host issues the close command to the adapter. 26161da177e4SLinus Torvalds */ 26171da177e4SLinus Torvalds 26181da177e4SLinus Torvalds while (((tx_inuse = atomic_read(&sk_atm(vcc)->sk_wmem_alloc)) > 0) && 26191da177e4SLinus Torvalds (retry < MAX_RETRY)) { 26201da177e4SLinus Torvalds msleep(sleep); 26211da177e4SLinus Torvalds if (sleep < 250) 26221da177e4SLinus Torvalds sleep = sleep * 2; 26231da177e4SLinus Torvalds 26241da177e4SLinus Torvalds ++retry; 26251da177e4SLinus Torvalds } 26261da177e4SLinus Torvalds 26271da177e4SLinus Torvalds if (tx_inuse) 26281da177e4SLinus Torvalds hprintk("close tx cid 0x%x tx_inuse = %d\n", cid, tx_inuse); 26291da177e4SLinus Torvalds 26301da177e4SLinus Torvalds /* 2.3.1.1 generic close operations with flush */ 26311da177e4SLinus Torvalds 26321da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 26331da177e4SLinus Torvalds he_writel_tsr4_upper(he_dev, TSR4_FLUSH_CONN, cid); 26341da177e4SLinus Torvalds /* also clears TSR4_SESSION_ENDED */ 26351da177e4SLinus Torvalds 26361da177e4SLinus Torvalds switch (vcc->qos.txtp.traffic_class) { 26371da177e4SLinus Torvalds case ATM_UBR: 26381da177e4SLinus Torvalds he_writel_tsr1(he_dev, 26391da177e4SLinus Torvalds TSR1_MCR(rate_to_atmf(200000)) 26401da177e4SLinus Torvalds | TSR1_PCR(0), cid); 26411da177e4SLinus Torvalds break; 26421da177e4SLinus Torvalds case ATM_CBR: 26431da177e4SLinus Torvalds he_writel_tsr14_upper(he_dev, TSR14_DELETE, cid); 26441da177e4SLinus Torvalds break; 26451da177e4SLinus Torvalds } 26461da177e4SLinus Torvalds (void) he_readl_tsr4(he_dev, cid); /* flush posted writes */ 26471da177e4SLinus Torvalds 26481da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 26491da177e4SLinus Torvalds if (tpd == NULL) { 26501da177e4SLinus Torvalds hprintk("close tx he_alloc_tpd failed cid 0x%x\n", cid); 26511da177e4SLinus Torvalds goto close_tx_incomplete; 26521da177e4SLinus Torvalds } 26531da177e4SLinus Torvalds tpd->status |= TPD_EOS | TPD_INT; 26541da177e4SLinus Torvalds tpd->skb = NULL; 26551da177e4SLinus Torvalds tpd->vcc = vcc; 26561da177e4SLinus Torvalds wmb(); 26571da177e4SLinus Torvalds 26581da177e4SLinus Torvalds set_current_state(TASK_UNINTERRUPTIBLE); 26591da177e4SLinus Torvalds add_wait_queue(&he_vcc->tx_waitq, &wait); 26601da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 26611da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 26621da177e4SLinus Torvalds 26631da177e4SLinus Torvalds timeout = schedule_timeout(30*HZ); 26641da177e4SLinus Torvalds 26651da177e4SLinus Torvalds remove_wait_queue(&he_vcc->tx_waitq, &wait); 26661da177e4SLinus Torvalds set_current_state(TASK_RUNNING); 26671da177e4SLinus Torvalds 26681da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 26691da177e4SLinus Torvalds 26701da177e4SLinus Torvalds if (timeout == 0) { 26711da177e4SLinus Torvalds hprintk("close tx timeout cid 0x%x\n", cid); 26721da177e4SLinus Torvalds goto close_tx_incomplete; 26731da177e4SLinus Torvalds } 26741da177e4SLinus Torvalds 26751da177e4SLinus Torvalds while (!((tsr4 = he_readl_tsr4(he_dev, cid)) & TSR4_SESSION_ENDED)) { 26761da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x !TSR4_SESSION_ENDED (tsr4 = 0x%x)\n", cid, tsr4); 26771da177e4SLinus Torvalds udelay(250); 26781da177e4SLinus Torvalds } 26791da177e4SLinus Torvalds 26801da177e4SLinus Torvalds while (TSR0_CONN_STATE(tsr0 = he_readl_tsr0(he_dev, cid)) != 0) { 26811da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x TSR0_CONN_STATE != 0 (tsr0 = 0x%x)\n", cid, tsr0); 26821da177e4SLinus Torvalds udelay(250); 26831da177e4SLinus Torvalds } 26841da177e4SLinus Torvalds 26851da177e4SLinus Torvalds close_tx_incomplete: 26861da177e4SLinus Torvalds 26871da177e4SLinus Torvalds if (vcc->qos.txtp.traffic_class == ATM_CBR) { 26881da177e4SLinus Torvalds int reg = he_vcc->rc_index; 26891da177e4SLinus Torvalds 26901da177e4SLinus Torvalds HPRINTK("cs_stper reg = %d\n", reg); 26911da177e4SLinus Torvalds 26921da177e4SLinus Torvalds if (he_dev->cs_stper[reg].inuse == 0) 26931da177e4SLinus Torvalds hprintk("cs_stper[%d].inuse = 0!\n", reg); 26941da177e4SLinus Torvalds else 26951da177e4SLinus Torvalds --he_dev->cs_stper[reg].inuse; 26961da177e4SLinus Torvalds 26971da177e4SLinus Torvalds he_dev->total_bw -= he_dev->cs_stper[reg].pcr; 26981da177e4SLinus Torvalds } 26991da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27001da177e4SLinus Torvalds 27011da177e4SLinus Torvalds HPRINTK("close tx cid 0x%x complete\n", cid); 27021da177e4SLinus Torvalds } 27031da177e4SLinus Torvalds 27041da177e4SLinus Torvalds kfree(he_vcc); 27051da177e4SLinus Torvalds 27061da177e4SLinus Torvalds clear_bit(ATM_VF_ADDR, &vcc->flags); 27071da177e4SLinus Torvalds } 27081da177e4SLinus Torvalds 27091da177e4SLinus Torvalds static int 27101da177e4SLinus Torvalds he_send(struct atm_vcc *vcc, struct sk_buff *skb) 27111da177e4SLinus Torvalds { 27121da177e4SLinus Torvalds unsigned long flags; 27131da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(vcc->dev); 27141da177e4SLinus Torvalds unsigned cid = he_mkcid(he_dev, vcc->vpi, vcc->vci); 27151da177e4SLinus Torvalds struct he_tpd *tpd; 27161da177e4SLinus Torvalds #ifdef USE_SCATTERGATHER 27171da177e4SLinus Torvalds int i, slot = 0; 27181da177e4SLinus Torvalds #endif 27191da177e4SLinus Torvalds 27201da177e4SLinus Torvalds #define HE_TPD_BUFSIZE 0xffff 27211da177e4SLinus Torvalds 27221da177e4SLinus Torvalds HPRINTK("send %d.%d\n", vcc->vpi, vcc->vci); 27231da177e4SLinus Torvalds 27241da177e4SLinus Torvalds if ((skb->len > HE_TPD_BUFSIZE) || 27251da177e4SLinus Torvalds ((vcc->qos.aal == ATM_AAL0) && (skb->len != ATM_AAL0_SDU))) { 27261da177e4SLinus Torvalds hprintk("buffer too large (or small) -- %d bytes\n", skb->len ); 27271da177e4SLinus Torvalds if (vcc->pop) 27281da177e4SLinus Torvalds vcc->pop(vcc, skb); 27291da177e4SLinus Torvalds else 27301da177e4SLinus Torvalds dev_kfree_skb_any(skb); 27311da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 27321da177e4SLinus Torvalds return -EINVAL; 27331da177e4SLinus Torvalds } 27341da177e4SLinus Torvalds 27351da177e4SLinus Torvalds #ifndef USE_SCATTERGATHER 27361da177e4SLinus Torvalds if (skb_shinfo(skb)->nr_frags) { 27371da177e4SLinus Torvalds hprintk("no scatter/gather support\n"); 27381da177e4SLinus Torvalds if (vcc->pop) 27391da177e4SLinus Torvalds vcc->pop(vcc, skb); 27401da177e4SLinus Torvalds else 27411da177e4SLinus Torvalds dev_kfree_skb_any(skb); 27421da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 27431da177e4SLinus Torvalds return -EINVAL; 27441da177e4SLinus Torvalds } 27451da177e4SLinus Torvalds #endif 27461da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 27471da177e4SLinus Torvalds 27481da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 27491da177e4SLinus Torvalds if (tpd == NULL) { 27501da177e4SLinus Torvalds if (vcc->pop) 27511da177e4SLinus Torvalds vcc->pop(vcc, skb); 27521da177e4SLinus Torvalds else 27531da177e4SLinus Torvalds dev_kfree_skb_any(skb); 27541da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 27551da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27561da177e4SLinus Torvalds return -ENOMEM; 27571da177e4SLinus Torvalds } 27581da177e4SLinus Torvalds 27591da177e4SLinus Torvalds if (vcc->qos.aal == ATM_AAL5) 27601da177e4SLinus Torvalds tpd->status |= TPD_CELLTYPE(TPD_USERCELL); 27611da177e4SLinus Torvalds else { 27621da177e4SLinus Torvalds char *pti_clp = (void *) (skb->data + 3); 27631da177e4SLinus Torvalds int clp, pti; 27641da177e4SLinus Torvalds 27651da177e4SLinus Torvalds pti = (*pti_clp & ATM_HDR_PTI_MASK) >> ATM_HDR_PTI_SHIFT; 27661da177e4SLinus Torvalds clp = (*pti_clp & ATM_HDR_CLP); 27671da177e4SLinus Torvalds tpd->status |= TPD_CELLTYPE(pti); 27681da177e4SLinus Torvalds if (clp) 27691da177e4SLinus Torvalds tpd->status |= TPD_CLP; 27701da177e4SLinus Torvalds 27711da177e4SLinus Torvalds skb_pull(skb, ATM_AAL0_SDU - ATM_CELL_PAYLOAD); 27721da177e4SLinus Torvalds } 27731da177e4SLinus Torvalds 27741da177e4SLinus Torvalds #ifdef USE_SCATTERGATHER 27751da177e4SLinus Torvalds tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev, skb->data, 27761da177e4SLinus Torvalds skb->len - skb->data_len, PCI_DMA_TODEVICE); 27771da177e4SLinus Torvalds tpd->iovec[slot].len = skb->len - skb->data_len; 27781da177e4SLinus Torvalds ++slot; 27791da177e4SLinus Torvalds 27801da177e4SLinus Torvalds for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { 27811da177e4SLinus Torvalds skb_frag_t *frag = &skb_shinfo(skb)->frags[i]; 27821da177e4SLinus Torvalds 27831da177e4SLinus Torvalds if (slot == TPD_MAXIOV) { /* queue tpd; start new tpd */ 27841da177e4SLinus Torvalds tpd->vcc = vcc; 27851da177e4SLinus Torvalds tpd->skb = NULL; /* not the last fragment 27861da177e4SLinus Torvalds so dont ->push() yet */ 27871da177e4SLinus Torvalds wmb(); 27881da177e4SLinus Torvalds 27891da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 27901da177e4SLinus Torvalds tpd = __alloc_tpd(he_dev); 27911da177e4SLinus Torvalds if (tpd == NULL) { 27921da177e4SLinus Torvalds if (vcc->pop) 27931da177e4SLinus Torvalds vcc->pop(vcc, skb); 27941da177e4SLinus Torvalds else 27951da177e4SLinus Torvalds dev_kfree_skb_any(skb); 27961da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx_err); 27971da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 27981da177e4SLinus Torvalds return -ENOMEM; 27991da177e4SLinus Torvalds } 28001da177e4SLinus Torvalds tpd->status |= TPD_USERCELL; 28011da177e4SLinus Torvalds slot = 0; 28021da177e4SLinus Torvalds } 28031da177e4SLinus Torvalds 28041da177e4SLinus Torvalds tpd->iovec[slot].addr = pci_map_single(he_dev->pci_dev, 28051da177e4SLinus Torvalds (void *) page_address(frag->page) + frag->page_offset, 28061da177e4SLinus Torvalds frag->size, PCI_DMA_TODEVICE); 28071da177e4SLinus Torvalds tpd->iovec[slot].len = frag->size; 28081da177e4SLinus Torvalds ++slot; 28091da177e4SLinus Torvalds 28101da177e4SLinus Torvalds } 28111da177e4SLinus Torvalds 28121da177e4SLinus Torvalds tpd->iovec[slot - 1].len |= TPD_LST; 28131da177e4SLinus Torvalds #else 28141da177e4SLinus Torvalds tpd->address0 = pci_map_single(he_dev->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE); 28151da177e4SLinus Torvalds tpd->length0 = skb->len | TPD_LST; 28161da177e4SLinus Torvalds #endif 28171da177e4SLinus Torvalds tpd->status |= TPD_INT; 28181da177e4SLinus Torvalds 28191da177e4SLinus Torvalds tpd->vcc = vcc; 28201da177e4SLinus Torvalds tpd->skb = skb; 28211da177e4SLinus Torvalds wmb(); 28221da177e4SLinus Torvalds ATM_SKB(skb)->vcc = vcc; 28231da177e4SLinus Torvalds 28241da177e4SLinus Torvalds __enqueue_tpd(he_dev, tpd, cid); 28251da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 28261da177e4SLinus Torvalds 28271da177e4SLinus Torvalds atomic_inc(&vcc->stats->tx); 28281da177e4SLinus Torvalds 28291da177e4SLinus Torvalds return 0; 28301da177e4SLinus Torvalds } 28311da177e4SLinus Torvalds 28321da177e4SLinus Torvalds static int 28331da177e4SLinus Torvalds he_ioctl(struct atm_dev *atm_dev, unsigned int cmd, void __user *arg) 28341da177e4SLinus Torvalds { 28351da177e4SLinus Torvalds unsigned long flags; 28361da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 28371da177e4SLinus Torvalds struct he_ioctl_reg reg; 28381da177e4SLinus Torvalds int err = 0; 28391da177e4SLinus Torvalds 28401da177e4SLinus Torvalds switch (cmd) { 28411da177e4SLinus Torvalds case HE_GET_REG: 28421da177e4SLinus Torvalds if (!capable(CAP_NET_ADMIN)) 28431da177e4SLinus Torvalds return -EPERM; 28441da177e4SLinus Torvalds 28451da177e4SLinus Torvalds if (copy_from_user(®, arg, 28461da177e4SLinus Torvalds sizeof(struct he_ioctl_reg))) 28471da177e4SLinus Torvalds return -EFAULT; 28481da177e4SLinus Torvalds 28491da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 28501da177e4SLinus Torvalds switch (reg.type) { 28511da177e4SLinus Torvalds case HE_REGTYPE_PCI: 28521da177e4SLinus Torvalds reg.val = he_readl(he_dev, reg.addr); 28531da177e4SLinus Torvalds break; 28541da177e4SLinus Torvalds case HE_REGTYPE_RCM: 28551da177e4SLinus Torvalds reg.val = 28561da177e4SLinus Torvalds he_readl_rcm(he_dev, reg.addr); 28571da177e4SLinus Torvalds break; 28581da177e4SLinus Torvalds case HE_REGTYPE_TCM: 28591da177e4SLinus Torvalds reg.val = 28601da177e4SLinus Torvalds he_readl_tcm(he_dev, reg.addr); 28611da177e4SLinus Torvalds break; 28621da177e4SLinus Torvalds case HE_REGTYPE_MBOX: 28631da177e4SLinus Torvalds reg.val = 28641da177e4SLinus Torvalds he_readl_mbox(he_dev, reg.addr); 28651da177e4SLinus Torvalds break; 28661da177e4SLinus Torvalds default: 28671da177e4SLinus Torvalds err = -EINVAL; 28681da177e4SLinus Torvalds break; 28691da177e4SLinus Torvalds } 28701da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 28711da177e4SLinus Torvalds if (err == 0) 28721da177e4SLinus Torvalds if (copy_to_user(arg, ®, 28731da177e4SLinus Torvalds sizeof(struct he_ioctl_reg))) 28741da177e4SLinus Torvalds return -EFAULT; 28751da177e4SLinus Torvalds break; 28761da177e4SLinus Torvalds default: 28771da177e4SLinus Torvalds #ifdef CONFIG_ATM_HE_USE_SUNI 28781da177e4SLinus Torvalds if (atm_dev->phy && atm_dev->phy->ioctl) 28791da177e4SLinus Torvalds err = atm_dev->phy->ioctl(atm_dev, cmd, arg); 28801da177e4SLinus Torvalds #else /* CONFIG_ATM_HE_USE_SUNI */ 28811da177e4SLinus Torvalds err = -EINVAL; 28821da177e4SLinus Torvalds #endif /* CONFIG_ATM_HE_USE_SUNI */ 28831da177e4SLinus Torvalds break; 28841da177e4SLinus Torvalds } 28851da177e4SLinus Torvalds 28861da177e4SLinus Torvalds return err; 28871da177e4SLinus Torvalds } 28881da177e4SLinus Torvalds 28891da177e4SLinus Torvalds static void 28901da177e4SLinus Torvalds he_phy_put(struct atm_dev *atm_dev, unsigned char val, unsigned long addr) 28911da177e4SLinus Torvalds { 28921da177e4SLinus Torvalds unsigned long flags; 28931da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 28941da177e4SLinus Torvalds 28951da177e4SLinus Torvalds HPRINTK("phy_put(val 0x%x, addr 0x%lx)\n", val, addr); 28961da177e4SLinus Torvalds 28971da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 28981da177e4SLinus Torvalds he_writel(he_dev, val, FRAMER + (addr*4)); 28991da177e4SLinus Torvalds (void) he_readl(he_dev, FRAMER + (addr*4)); /* flush posted writes */ 29001da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 29011da177e4SLinus Torvalds } 29021da177e4SLinus Torvalds 29031da177e4SLinus Torvalds 29041da177e4SLinus Torvalds static unsigned char 29051da177e4SLinus Torvalds he_phy_get(struct atm_dev *atm_dev, unsigned long addr) 29061da177e4SLinus Torvalds { 29071da177e4SLinus Torvalds unsigned long flags; 29081da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(atm_dev); 29091da177e4SLinus Torvalds unsigned reg; 29101da177e4SLinus Torvalds 29111da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 29121da177e4SLinus Torvalds reg = he_readl(he_dev, FRAMER + (addr*4)); 29131da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 29141da177e4SLinus Torvalds 29151da177e4SLinus Torvalds HPRINTK("phy_get(addr 0x%lx) =0x%x\n", addr, reg); 29161da177e4SLinus Torvalds return reg; 29171da177e4SLinus Torvalds } 29181da177e4SLinus Torvalds 29191da177e4SLinus Torvalds static int 29201da177e4SLinus Torvalds he_proc_read(struct atm_dev *dev, loff_t *pos, char *page) 29211da177e4SLinus Torvalds { 29221da177e4SLinus Torvalds unsigned long flags; 29231da177e4SLinus Torvalds struct he_dev *he_dev = HE_DEV(dev); 29241da177e4SLinus Torvalds int left, i; 29251da177e4SLinus Torvalds #ifdef notdef 29261da177e4SLinus Torvalds struct he_rbrq *rbrq_tail; 29271da177e4SLinus Torvalds struct he_tpdrq *tpdrq_head; 29281da177e4SLinus Torvalds int rbpl_head, rbpl_tail; 29291da177e4SLinus Torvalds #endif 29301da177e4SLinus Torvalds static long mcc = 0, oec = 0, dcc = 0, cec = 0; 29311da177e4SLinus Torvalds 29321da177e4SLinus Torvalds 29331da177e4SLinus Torvalds left = *pos; 29341da177e4SLinus Torvalds if (!left--) 2935900092a4SAdrian Bunk return sprintf(page, "ATM he driver\n"); 29361da177e4SLinus Torvalds 29371da177e4SLinus Torvalds if (!left--) 29381da177e4SLinus Torvalds return sprintf(page, "%s%s\n\n", 29391da177e4SLinus Torvalds he_dev->prod_id, he_dev->media & 0x40 ? "SM" : "MM"); 29401da177e4SLinus Torvalds 29411da177e4SLinus Torvalds if (!left--) 29421da177e4SLinus Torvalds return sprintf(page, "Mismatched Cells VPI/VCI Not Open Dropped Cells RCM Dropped Cells\n"); 29431da177e4SLinus Torvalds 29441da177e4SLinus Torvalds spin_lock_irqsave(&he_dev->global_lock, flags); 29451da177e4SLinus Torvalds mcc += he_readl(he_dev, MCC); 29461da177e4SLinus Torvalds oec += he_readl(he_dev, OEC); 29471da177e4SLinus Torvalds dcc += he_readl(he_dev, DCC); 29481da177e4SLinus Torvalds cec += he_readl(he_dev, CEC); 29491da177e4SLinus Torvalds spin_unlock_irqrestore(&he_dev->global_lock, flags); 29501da177e4SLinus Torvalds 29511da177e4SLinus Torvalds if (!left--) 29521da177e4SLinus Torvalds return sprintf(page, "%16ld %16ld %13ld %17ld\n\n", 29531da177e4SLinus Torvalds mcc, oec, dcc, cec); 29541da177e4SLinus Torvalds 29551da177e4SLinus Torvalds if (!left--) 29561da177e4SLinus Torvalds return sprintf(page, "irq_size = %d inuse = ? peak = %d\n", 29571da177e4SLinus Torvalds CONFIG_IRQ_SIZE, he_dev->irq_peak); 29581da177e4SLinus Torvalds 29591da177e4SLinus Torvalds if (!left--) 29601da177e4SLinus Torvalds return sprintf(page, "tpdrq_size = %d inuse = ?\n", 29611da177e4SLinus Torvalds CONFIG_TPDRQ_SIZE); 29621da177e4SLinus Torvalds 29631da177e4SLinus Torvalds if (!left--) 29641da177e4SLinus Torvalds return sprintf(page, "rbrq_size = %d inuse = ? peak = %d\n", 29651da177e4SLinus Torvalds CONFIG_RBRQ_SIZE, he_dev->rbrq_peak); 29661da177e4SLinus Torvalds 29671da177e4SLinus Torvalds if (!left--) 29681da177e4SLinus Torvalds return sprintf(page, "tbrq_size = %d peak = %d\n", 29691da177e4SLinus Torvalds CONFIG_TBRQ_SIZE, he_dev->tbrq_peak); 29701da177e4SLinus Torvalds 29711da177e4SLinus Torvalds 29721da177e4SLinus Torvalds #ifdef notdef 29731da177e4SLinus Torvalds rbpl_head = RBPL_MASK(he_readl(he_dev, G0_RBPL_S)); 29741da177e4SLinus Torvalds rbpl_tail = RBPL_MASK(he_readl(he_dev, G0_RBPL_T)); 29751da177e4SLinus Torvalds 29761da177e4SLinus Torvalds inuse = rbpl_head - rbpl_tail; 29771da177e4SLinus Torvalds if (inuse < 0) 29781da177e4SLinus Torvalds inuse += CONFIG_RBPL_SIZE * sizeof(struct he_rbp); 29791da177e4SLinus Torvalds inuse /= sizeof(struct he_rbp); 29801da177e4SLinus Torvalds 29811da177e4SLinus Torvalds if (!left--) 29821da177e4SLinus Torvalds return sprintf(page, "rbpl_size = %d inuse = %d\n\n", 29831da177e4SLinus Torvalds CONFIG_RBPL_SIZE, inuse); 29841da177e4SLinus Torvalds #endif 29851da177e4SLinus Torvalds 29861da177e4SLinus Torvalds if (!left--) 29871da177e4SLinus Torvalds return sprintf(page, "rate controller periods (cbr)\n pcr #vc\n"); 29881da177e4SLinus Torvalds 29891da177e4SLinus Torvalds for (i = 0; i < HE_NUM_CS_STPER; ++i) 29901da177e4SLinus Torvalds if (!left--) 29911da177e4SLinus Torvalds return sprintf(page, "cs_stper%-2d %8ld %3d\n", i, 29921da177e4SLinus Torvalds he_dev->cs_stper[i].pcr, 29931da177e4SLinus Torvalds he_dev->cs_stper[i].inuse); 29941da177e4SLinus Torvalds 29951da177e4SLinus Torvalds if (!left--) 29961da177e4SLinus Torvalds return sprintf(page, "total bw (cbr): %d (limit %d)\n", 29971da177e4SLinus Torvalds he_dev->total_bw, he_dev->atm_dev->link_rate * 10 / 9); 29981da177e4SLinus Torvalds 29991da177e4SLinus Torvalds return 0; 30001da177e4SLinus Torvalds } 30011da177e4SLinus Torvalds 30021da177e4SLinus Torvalds /* eeprom routines -- see 4.7 */ 30031da177e4SLinus Torvalds 30040ee897d4SAdrian Bunk static u8 read_prom_byte(struct he_dev *he_dev, int addr) 30051da177e4SLinus Torvalds { 30061da177e4SLinus Torvalds u32 val = 0, tmp_read = 0; 30071da177e4SLinus Torvalds int i, j = 0; 30081da177e4SLinus Torvalds u8 byte_read = 0; 30091da177e4SLinus Torvalds 30101da177e4SLinus Torvalds val = readl(he_dev->membase + HOST_CNTL); 30111da177e4SLinus Torvalds val &= 0xFFFFE0FF; 30121da177e4SLinus Torvalds 30131da177e4SLinus Torvalds /* Turn on write enable */ 30141da177e4SLinus Torvalds val |= 0x800; 30151da177e4SLinus Torvalds he_writel(he_dev, val, HOST_CNTL); 30161da177e4SLinus Torvalds 30171da177e4SLinus Torvalds /* Send READ instruction */ 301836fe55d6SAhmed S. Darwish for (i = 0; i < ARRAY_SIZE(readtab); i++) { 30191da177e4SLinus Torvalds he_writel(he_dev, val | readtab[i], HOST_CNTL); 30201da177e4SLinus Torvalds udelay(EEPROM_DELAY); 30211da177e4SLinus Torvalds } 30221da177e4SLinus Torvalds 30231da177e4SLinus Torvalds /* Next, we need to send the byte address to read from */ 30241da177e4SLinus Torvalds for (i = 7; i >= 0; i--) { 30251da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL); 30261da177e4SLinus Torvalds udelay(EEPROM_DELAY); 30271da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++] | (((addr >> i) & 1) << 9), HOST_CNTL); 30281da177e4SLinus Torvalds udelay(EEPROM_DELAY); 30291da177e4SLinus Torvalds } 30301da177e4SLinus Torvalds 30311da177e4SLinus Torvalds j = 0; 30321da177e4SLinus Torvalds 30331da177e4SLinus Torvalds val &= 0xFFFFF7FF; /* Turn off write enable */ 30341da177e4SLinus Torvalds he_writel(he_dev, val, HOST_CNTL); 30351da177e4SLinus Torvalds 30361da177e4SLinus Torvalds /* Now, we can read data from the EEPROM by clocking it in */ 30371da177e4SLinus Torvalds for (i = 7; i >= 0; i--) { 30381da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++], HOST_CNTL); 30391da177e4SLinus Torvalds udelay(EEPROM_DELAY); 30401da177e4SLinus Torvalds tmp_read = he_readl(he_dev, HOST_CNTL); 30411da177e4SLinus Torvalds byte_read |= (unsigned char) 30421da177e4SLinus Torvalds ((tmp_read & ID_DOUT) >> ID_DOFFSET << i); 30431da177e4SLinus Torvalds he_writel(he_dev, val | clocktab[j++], HOST_CNTL); 30441da177e4SLinus Torvalds udelay(EEPROM_DELAY); 30451da177e4SLinus Torvalds } 30461da177e4SLinus Torvalds 30471da177e4SLinus Torvalds he_writel(he_dev, val | ID_CS, HOST_CNTL); 30481da177e4SLinus Torvalds udelay(EEPROM_DELAY); 30491da177e4SLinus Torvalds 30501da177e4SLinus Torvalds return byte_read; 30511da177e4SLinus Torvalds } 30521da177e4SLinus Torvalds 30531da177e4SLinus Torvalds MODULE_LICENSE("GPL"); 30541da177e4SLinus Torvalds MODULE_AUTHOR("chas williams <chas@cmf.nrl.navy.mil>"); 30551da177e4SLinus Torvalds MODULE_DESCRIPTION("ForeRunnerHE ATM Adapter driver"); 30561da177e4SLinus Torvalds module_param(disable64, bool, 0); 30571da177e4SLinus Torvalds MODULE_PARM_DESC(disable64, "disable 64-bit pci bus transfers"); 30581da177e4SLinus Torvalds module_param(nvpibits, short, 0); 30591da177e4SLinus Torvalds MODULE_PARM_DESC(nvpibits, "numbers of bits for vpi (default 0)"); 30601da177e4SLinus Torvalds module_param(nvcibits, short, 0); 30611da177e4SLinus Torvalds MODULE_PARM_DESC(nvcibits, "numbers of bits for vci (default 12)"); 30621da177e4SLinus Torvalds module_param(rx_skb_reserve, short, 0); 30631da177e4SLinus Torvalds MODULE_PARM_DESC(rx_skb_reserve, "padding for receive skb (default 16)"); 30641da177e4SLinus Torvalds module_param(irq_coalesce, bool, 0); 30651da177e4SLinus Torvalds MODULE_PARM_DESC(irq_coalesce, "use interrupt coalescing (default 1)"); 30661da177e4SLinus Torvalds module_param(sdh, bool, 0); 30671da177e4SLinus Torvalds MODULE_PARM_DESC(sdh, "use SDH framing (default 0)"); 30681da177e4SLinus Torvalds 30691da177e4SLinus Torvalds static struct pci_device_id he_pci_tbl[] = { 30701da177e4SLinus Torvalds { PCI_VENDOR_ID_FORE, PCI_DEVICE_ID_FORE_HE, PCI_ANY_ID, PCI_ANY_ID, 30711da177e4SLinus Torvalds 0, 0, 0 }, 30721da177e4SLinus Torvalds { 0, } 30731da177e4SLinus Torvalds }; 30741da177e4SLinus Torvalds 30751da177e4SLinus Torvalds MODULE_DEVICE_TABLE(pci, he_pci_tbl); 30761da177e4SLinus Torvalds 30771da177e4SLinus Torvalds static struct pci_driver he_driver = { 30781da177e4SLinus Torvalds .name = "he", 30791da177e4SLinus Torvalds .probe = he_init_one, 30801da177e4SLinus Torvalds .remove = __devexit_p(he_remove_one), 30811da177e4SLinus Torvalds .id_table = he_pci_tbl, 30821da177e4SLinus Torvalds }; 30831da177e4SLinus Torvalds 30841da177e4SLinus Torvalds static int __init he_init(void) 30851da177e4SLinus Torvalds { 30861da177e4SLinus Torvalds return pci_register_driver(&he_driver); 30871da177e4SLinus Torvalds } 30881da177e4SLinus Torvalds 30891da177e4SLinus Torvalds static void __exit he_cleanup(void) 30901da177e4SLinus Torvalds { 30911da177e4SLinus Torvalds pci_unregister_driver(&he_driver); 30921da177e4SLinus Torvalds } 30931da177e4SLinus Torvalds 30941da177e4SLinus Torvalds module_init(he_init); 30951da177e4SLinus Torvalds module_exit(he_cleanup); 3096